Instruction Manual for AHVE models including: P0300, 115V Air Handler, 115V, Air Handler, Handler
Goodman AHVE42CP1300 AHVE - 3.5 Ton - Air Handler - Horizontal-Discharge - 208-230/1/60 - Variable Speed ECM Blower with EEV - R
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DocumentDocumentAHVE***P0300** (115V) AIR HANDLERS INSTALLATION & OPERATING INSTRUCTIONS 1 Important Safety Instructions ....................................2 2 Shipping Inspection....................................................3 2.1 Parts .............................................................................3 2.2 Handling .......................................................................3 3 Codes & Regulations..................................................3 4 Replacement Parts......................................................4 5 Pre-Installation Considerations................................4 5.1 Preparation ...................................................................4 5.2 System Matches ...........................................................4 5.3 Interconnecting Tubing .................................................4 5.4 Clearances ...................................................................4 5.5 Horizontal Applications .................................................5 5.6 Access ..........................................................................5 6 Installation Location ..................................................5 6.1 Upflow Installation ........................................................5 6.2 Horizontal Left Installation ............................................5 6.2.1 Instructions To Relocate A2L Sensor Bracket Assembly From Upflow to Horizontal Left ..........................5 6.3 Downflow/Horizontal Right Installation .........................8 6.3.1 Instructions To Relocate A2L Sensor Bracket Assembly From Downflow to Horizontal Right ...................9 7 Refrigerant Lines ........................................................9 7.1 Tubing Size...................................................................9 7.2 Tubing Preparation .......................................................9 7.3 Tubing Connections....................................................10 8 Condensate Drain Lines........................................... 11 9 Ductwork....................................................................12 9.1 Return Ductwork.........................................................12 10 Return Air Filters.....................................................12 11 Electrical and Control Wiring.................................12 11.1 Building Electrical Service Inspection .......................12 11.2 Wire Sizing................................................................12 11.3 Maximum Overcurrent Protection (MOP) .................12 11.4 Electrical Connections Supply Voltage ..................13 11.4.1 Air Handler Only.....................................................13 11.5 Low Voltage Connections .........................................13 12 Achieving 1.4% & 2% Low Leakage Rate .............13 13 AirflowTrim .............................................................13 14 Miscellaneous Start-Up Checklist .........................14 14.1 Auxiliary Alarm Switch ..............................................15 14.2 Circulator Blower ......................................................15 14.3 Motor Orientation......................................................15 14.4 Accessory Contacts..................................................15 14.5 Leak Detection Output (Relay K4R) .........................16 © 2024-2025 Daikin Comfort Technologies Manufacturing, L.P. 19001 Kermier Rd., Waller, TX 77484 www.goodmanmfg.com - or - www.amana-hac.com P/N: IOA-4055B Date: January 2025 WARNING Onlypersonnelthathavebeentrainedtoinstall,adjust, service,maintenanceorrepair(hereinafter,"service") theequipmentspecifiedinthismanualshouldservicethe equipment. Thisequipmentisnotintendedforusebypersons(includingchildren)withreducedphysical,sensoryormentalcapacities,orlackofexperienceandknowledge,unlessthey havebeengivensupervisionorinstructionconcerninguse oftheappliancebyapersonresponsiblefortheirsafety. Childrenshouldbesupervisedtoensurethattheydonot playwiththeequipment. Themanufacturerwillnotberesponsibleforanyinjury orpropertydamagearisingfromimpropersupervision, serviceorserviceprocedures.Ifyouservicethisunit,you assumeresponsibilityforanyinjuryorpropertydamage whichmayresult.Inaddition,injurisdictionsthatrequire oneormorelicensestoservicetheequipmentspecifiedin thismanual,onlylicensedpersonnelshouldservicethe equipment.Impropersupervision,installation,adjustment, servicing,maintenanceorrepairoftheequipmentspecified inthismanual,orattemptingtoinstall,adjust,serviceor repairtheequipmentspecifiedinthismanualwithoutpropersupervisionortrainingmayresultinproductdamage, propertydamage,personalinjuryordeath. WARNING Donotbypasssafetydevices. RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION. NOTE Specifications and performance data listed herein are subject to change without notice. This equipment is only approved for use with R-32 Refrigerant. CAUTION ElectricHeatercannotbeconnectedtoanyoftheseair handlers. ® is a registered trademark of Maytag Corporation or its related companies and is used under license. All rights reserved. 15 Troubleshooting .......................................................16 15.1 Electrostatic Discharge (ESD) Precautions ............16 15.2 Diagnostic Chart ......................................................17 15.3 Fault Recall..............................................................17 16 Fully Communicating Amana® Brand System ......17 16.1 Overview...................................................................17 16.2 Airflow Consideration................................................17 16.3 Thermostat Wiring ....................................................18 16.3.1 Two-Wire Outdoor and Four-Wire Indoor Wiring ...18 16.4 Network Troubleshooting..........................................18 16.5 System Troubleshooting ...........................................18 16.6 Refrigeration Detection System RDS .......................19 16.7 Refrigerant Leak Test ...............................................19 Troubleshooting .............................................................20 Diagnostic Codes ...........................................................23 Setting The Mode Display..............................................24 Wiring Diagram ...............................................................26 Routine Maintenance .....................................................27 Start-Up Checklist ..........................................................29 1 IMPORTANT SAFETY INSTRUCTIONS The following symbols and labels are used throughout this manual to indicate immediate or potential safety hazards. It is the owner's and installer's responsibility to read and comply with all safety information and instructions accompanying these symbols. Failure to heed safety information increases the risk of personal injury, property damage, and/or product damage. NOTICE: THIS PRODUCT CONTAINS ELECTRONIC COMPONENTS WHICH REQUIRE A DEFINITE GROUND. PROVISIONS ARE MADE FOR CONNECTION OF THE GROUND. A DEDICATED GROUND FROM THE MAIN POWER SUPPLY OR AN EARTH GROUND MUST BE PROVIDED. WARNING HIGH VOLTAGE Disconnectallpowerbeforeservicingorinstallingthisunit.Multiplepowersourcesmay bepresent.Failuretodosomaycausepropertydamage,personalinjuryordeath. WARNING Topreventtheriskofpropertydamage,personalinjury,or death,donotstorecombustiblematerialsorusegasoline orotherflammableliquidsorvaporsinthevicinityofthis unit. WARNING Toavoidpropertydamage,personalinjuryordeathdueto electricalshock,thisunitMUSThaveanuninterrupted,unbrokenelectricalground.Theelectricalgroundcircuitmay consistofanappropriatelysizedelectricalwireconnecting thegroundlugintheunitcontrolboxtothebuildingelectricalservicepanel. Othermethodsofgroundingarepermittedifperformedin accordancewiththeNationalElectricCode(NEC)/American NationalStandardsInstitute(ANSI)/NationalFireProtection Association(NFPA)70andlocal/statecodes.InCanada,electricalgroundingistobeinaccordancewiththeCanadian ElectricCode(CSA)C22.1. CAUTION Wheninstallingorservicingthisequipment,safetyclothing,includinghandandeyeprotection,isstronglyrecommended.Ifinstallinginanareathathasspecialsafety requirements(hardhats,etc.),observetheserequirements. WARNING Thisproductisfactory-shippedforusewith115V/1PH/60Hz electricalpowersupply.DONOTreconfigurethisairhandlertooperatewithanyotherpowersupply. WARNING Arefrigerantleakdetectionsystemisinstalled.Theunit mustbepoweredonalltimesexceptforservice. WARNING Donotconnecttooruseanydevicethatisnotcertifiedby themanufacturerforusewiththisunit.Seriousproperty damage,personalinjury,reducedunitperformanceand/ orhazardousconditionsmayresultfromtheuseofsuch non-approveddevices. WARNING Failuretoproperlyreconnectsensorwiresmayresultin Errorcodesandtheunitnotoperating. 2 CO can cause serious illness including permanent brain damage or death. Advertencia especial para la instalación de calentadores ó manejadoras de aire en áreas cerradas como estacionamientos ó cuartos de servicio. Las emisiones de monóxido de carbono pueden circular a través del aparato cuando se opera en cualquier modo. El monóxido de carbono puede causar enfermedades severas como daño cerebral permanente ó muerte. RISQUE D'EMPOISONNEMENT AU MONOXYDE DE CARBONE Cette ventilation est nécessaire pour éviter le danger d'intoxication au CO pouvant survenir si un appareil produisant du monoxyde de carbone continue de fonctionner au sein de la zone confinée. 2 SHIPPING INSPECTION Always transport the unit upright; laying the unit on its side or top during transit may cause equipment damage. The installer should inspect the product upon receipt for shipping damage and subsequent investigation is the responsibility of the carrier. The installer must verify the model number, specifications, electrical characteristics, and accessories are correct prior to installation. The distributor or manufacturer will not accept claims from dealers for transportation damage or installation of incorrectly shipped units. 2.1 Parts Inspect the unit to verify all required components are present and intact. Report any missing components immediately to the distributor. Use only factory authorized replacement parts (see Section 4). Make sure to include the full product model number and serial number when reporting and/or obtaining service parts. 2.2 Handling Use caution when transporting/carrying the unit. Do not move unit using shipping straps. Do not carry unit with hooks or sharp objects. The preferred method of carrying the unit after arrival at the job site is to carry via a two-wheel hand truck from the back or sides or via hand by carrying at the cabinet corners. If carrying by hand, carry at the cabinet corners with two people. Avoid holding the unit by the piping. WARNING IF ANY HOT WORK IS TO BE CONDUCTED ON THE REFRIGERATINGEQUIPMENTORANYASSOCIATEDPARTS, APPROPRIATE FIRE EXTINGUISHING EQUIPMENT SHALL BE AVAILABLE ON HAND. HAVE A DRY POWDER OR CO2 FIRE EXTINGUISHER ADJACENT TO THE HOT WORK. ENSURE THAT THE AREA IS IN THE OPEN OR THAT IT IS ADEQUATELY VENTILATED BEFORE BREAKING INTO THE SYSTEM OR CONDUCTING ANY HOT WORK. A DEGREE OF VENTILATION SHALL CONTINUE DURING THE PERIOD THAT THE WORK IS CARRIED OUT. THE VENTILATION SHOULD SAFELY DISPERSE ANY RELEASED REFRIGERANT AND PREFERABLY EXPEL IT EXTENALLY INTO THE ATMOSPHERE. 3 CODES & REGULATIONS This product is designed and manufactured to comply with applicable national codes such as ASHRAE 15, ASHRAE 15.2, IAPMO Uniform Mechanical Code, ICC International Mechanical Code, or CSA B52. Installation in accordance with such codes and/or prevailing local codes/regulations is the responsibility of the installer. The manufacturer assumes no responsibility for equipment installed in violation of any codes or regulations. The United States Environmental Protection Agency (EPA) has issued various regulations regarding the introduction and disposal of refrigerants. Failure to follow these regulations may harm the environment and can lead to the imposition of substantial fines. Should you have any questions please contact the local office of the EPA and/or refer to EPA's website www.epa.gov. 3 4 REPLACEMENT PARTS When reporting shortages or damages, or ordering repair parts, give the complete product model and serial numbers as stamped on the product. Replacement parts for this product are available through your contractor or local distributor. For the location of your nearest distributor contact: HOMEOWNER SUPPORT DAIKIN COMFORT TECHNOLOGIES MANUFACTURING, L.P. 19001 KERMIER ROAD WALLER, TEXAS 77484 855-770-5678 WARNING WHEN INSTALLED IN A ROOM WITH AN AREA LESS THAN THATOUTLINEDINTABLE1,THATROOMSHALLBE WITHOUT CONTINUOUSLY OPERATING OPEN FLAMES (FOR EXAMPLE AN OPERATING GAS APPLIANCE) OR OTHER POTENTIAL IGNITION SOURCES (FOR EXAMPLE AN OPERATINGELECTRICHEATER,HOTSURFACES). 5 PRE-INSTALLATION CONSIDERATIONS 5.1 Preparation Keep this document with the unit. Carefully read all instructions for the installation prior to installing product. Make sure each step or procedure is understood and any special considerations are taken into account before starting installation. Assemble all tools, hardware and supplies needed to complete the installation. Some items may need to be purchased locally. Make sure everything needed to install the product is on hand before starting. 5.2 System Matches WARNING Partialunitsshallonlybeconnectedtoanappliance suitableforthesamerefrigerant.ThisunitisaPARTIAL UNITAIRCONDITIONER,complyingwithPARTIALUNITrequirementsofthisInternationalStandard,andmustonly beconnectedtootherunitsthathavebeenconfirmedas complyingtocorrespondingPARTIALUNITrequirementsof thisInternationalStandard. The entire system (combination of indoor and outdoor sections) must be manufacturer approved and AirConditioning, Heating, and Refrigeration Institute (AHRI) listed. NOTE: Installation of unmatched systems is not permitted. Damage or repairs due to installation of unmatched systems is not covered under the warranty. 5.3 Interconnecting Tubing Give special consideration to minimize the length of refrigerant tubing when installing air handlers. Refer to outdoor HEAT PUMP INSTALLATION & SERVICE REFERENCE for line set configuration guidelines. If possible, allow adequate length of tubing such that the coil may be removed (for inspection or cleaning services) from the cabinet without disconnecting the tubing. 5.4 Clearances WARNING ONLY AUXILIARY DEVICES APPROVED BY THE APPLIANCE MANUFACTURER OR DECLARED SUITABLE WITH THE REFRIGERANT SHALL BE INSTALLED IN CONNECTING DUCTWORK. Model Maximum total system Maximum total system Minimum Room Area Requirement Minimum Room Area Requirement Minimum Mitigation Airflow Minimum Mitigation Airflow refrigerant refrigerant charge (oz) charge (kg) (Amin-ft2) (Amin-m2) (m3/hr) Qmin (CFM) AHVE24BP0300 132 3.74 AHVE36CP0300 138 3.91 AHVE42CP0300 155 4.39 AHVE48CP0300 241.45 6.85 AHVE48DP0300 241.45 6.85 AHVE60DP0300 249.55 7.07 119.67 125.11 140.52 218.89 218.89 226.23 11.12 11.62 13.05 20.34 20.34 21.02 366.88 383.57 430.82 671.11 671.11 693.62 215.94 225.76 253.57 395 395 408.25 Qmin is the minimum circulation airflow circulated to the total conditioned space. Amin is the required minimum area of the total conditioned space. (*1) For the most up-to-date information, refer to the outdoor unit's installation manual. Table 1 The Indoor equipment mitigation requirements are calculated at sea level. For higher altitudes adjust the minimum room area specified on the Serial Plate by the corresponding altitude adjustment factor shown below. This table is provided as a reference. Adjusted room area (Amin adj) is the product of the minimum room area specified on the serial plate and the adjustment factor AF, as shown in below formula Amin adj = Amin (serial plate) * AF Height in meters At sea level 1~200 200~400 400~600 600~800 800~1000 1000~1200 1200~1400 1400~1600 1600~1800 1800~2000 2000~2200 2200~2400 2400~2600 2600~2800 2800~3000 3000~3200 Height in feet At sea level 1~660 660~1320 1320~1970 1970~2630 2630~3290 3290~3940 3940~4600 4600~5250 5250~5910 5910~6570 6570~7220 7220~7880 7880~8540 8540~9190 9190~9850 9850~10500 Table 2 Altitude Adjustment Factor (AF) 1 1.02 1.03 1.05 1.07 1.09 1.11 1.13 1.15 1.17 1.19 1.21 1.24 1.26 1.29 1.31 1.34 4 The unit clearance from a combustible surface may be 0". However, service clearance must take precedence. A minimum of 24" in front of the unit for service clearance is required. Additional clearance on one side or top will be required for electrical wiring connections. Consult all appropriate regulatory codes prior to determining final clearances. When installing this unit in an area that may become wet (such as crawl spaces), elevate the unit with a sturdy, non-porous material. In installations that may lead to physical damage (i.e. a garage) it is advised to install a protective barrier to prevent such damage. Always install units such that a positive slope in condensate line (1/4" per foot) is allowed. Further, any joints made in the installation between parts of the refrigerating system must be accessible for maintenance purposes. 5.5 Horizontal Applications If installed above a finished living space a secondary drain pan with float switch, as required by many building codes, must be installed under the entire unit and its condensate drain line must be routed to a location such that the user will see the condensate discharge. 5.6 Access This unit should be installed in a manner so that it is not accessible to the public. 6 INSTALLATION LOCATION NOTE: These air handlers are designed for indoor installation only at a max altitude of 10,500 feet above sea level or a min altitude of -184 feet below sea level (refer Table 2) If the unit is located in an unconditioned area with high ambient temperature and/or high humidity, the air handler may be subject to nuisance sweating of the casing. On these installations, a wrap of 2" fiberglass insulation with a vapor barrier is recommended. Do not cover warning labels or serial plate. Maximum operating pressure is considered when connecting to any condenser unit. The EEV Series Air Handler product line may be installed in one of the upflow, downflow, horizontal left or horizontal right orientations as shown in Figures 3, 4, 5 and 6. The unit may be installed in upflow or horizontal left orientation as shipped (refer to specific sections for more information). Minor field modifications are necessary to convert to downflow or horizontal right as indicated in below sections. For AHVE* installations in areas where the return air environment sees humidity levels above 65% relative humidity, a High Humidity Kit (HHK) must be used. See Table 4 for Model and Kit assignment. 6.1 Upflow Installation No field modifications are mandatory however to obtain maximum efficiency, the horizontal drip shield, side drain pan and drain pan extension, can be removed. Side Drain Pan and Extension Removal: Refer to Figure 1, remove the two (2) screws that secure the drip shield support brackets to the condensate collectors (front and back). Unsnap the side drain pan from the bottom drain pan using a screw driver or any small lever. The side drain pan, drip shield brackets and the drain pan extension may now be removed. From Figure 1, drain port labeled (A) is the primary drain for this application and condensate drain line must be attached to this drain port. Drain port (a) is for the secondary drain line (if used). If the side drain pan is removed, the drain port opening in the access panel must be covered by the accessory drain port plug (DPK1, refer to Table 3) as shown in figure 1-1. 6.2 Horizontal Left Installation No field modifications are permissible for this application. Drain port labeled (B) in Figure 1 is the primary drain for this application and condensate drain line must be attached to this drain port. Drain port (b) is for the secondary drain line (if used). In applications where the air handler is installed in the horizontal left or right position, and the return air environment see humidity levels above 65% relative humidity coupled with total external static levels above 0.9" e.s.p., a Condensate Management Kit (CMK) is available for field application. Kit nomenclature can be found in the Table 5. Kit Number DRAIN PORT PLUG Description Application DPK1 Side Drain Port Plug All Models Table 3 6.2.1 Instructions To Relocate A2L Sensor Bracket Assembly From Upflow To Horizontal Left 1. Take off the coil access panel 2. Take off the drain port gaskets from Figure 1, drain port labeled (A) and (B) on main drain pan and side drain pan 3. Take off the A2L sensor bracket assembly as shown in Figure 1 4. Put A2L sensor bracket assembly to the side drain port correctly as shown in the figure 5. The "FRONT 0121A*****" print on sensor bracket should be in the front 5. Place gaskets back to the drain ports correctly. The "FRONT" print on the gaskets should be in the front. 6. Sensor wiring should be routed as shown in Figure 5. 7. Reassemble the blower access panel to the unit. 5 EXTENSION DRIP SHIELD BRACKET EEV SIDE DRAIN PAN THERMISTOR WIRE HARNESS EEV ACCESS VALVE RED CAP WITH O-RING HORIZONTAL DRIP SHIELD PAN A2L SENSOR WIRE HARNESS PRESSURE SENSOR ALL WIRES GO TO CONTROL DECK AND CONNCET TO PCB PRESSURE SENSOR GAS THERMISTOR B b A2L SENSOR BOTTOM DRAIN PAN A2L SENSOR BRACKET ASSEMBLY A a LIQUID THERMISTOR DRIP SHIELD REMOVAL FIGURE 1 SIDE DRAIN PAN A2L SENSOR BRACKET ASSEMBLY A2L SENSOR DRAIN PORT OPENING COIL ACCESS PANEL LOW VOLTAGE WIRES - BLOWER MOTOR, THERMISTOR, EEV, PRESSURE SENSOR AND A2L SENSOR WIRES ARE CONNECTED TO PCB, BUNDLED TOGETHER AND ROUTED THROUGH THE OBLONG GROMMET HOLE PRESSURE SENSOR GAS THERMISTOR EEV HARNESS PRESSURE SENSOR HARNESS THERMISTOR HARNESS LIQUID THERMISTOR MAIN DRAIN PAN FIGURE 1-1 BLOWER MOTOR LOW VOLTAGE WIRE SEE DETAIL A CONNECT THE THERMISTOR, EEV AND PRESSURE SENSOR WIRE HARNESSES TO THE JUNCTION WIRE HARNESSES DETAIL A A2L SENSOR HARNESS LOW VOLTAGE WIRES - BLOWER MOTOR, THERMISTOR, EEV, PRESSURE SENSOR AND A2L SENSOR WIRES ARE CONNECTED TO PCB, BUNDLED TOGETHER AND ROUTED THROUGH THE OBLONG GROMMET HOLE WIRE TIE 2 WIRE TIE 1 EEV A2L SENSOR A2L SENSOR BRACKET ASSEMBLY LIQUID THERMISTOR .3.030 0 BLOWER MOTOR HIGH VOLTAGE WIRES WILL BE CONNECTED TO 9-PIN CONNECTOR, ROUTED THROUGH CIRCULAR HOLE PRESSURE SENSOR GAS THERMISTOR FIGURE 2-3 WIRE TIE LOCATION TO BE REMOVED FIGURE 2-1 NOTE: If removing only the coil access panel from the unit, the filter access panel must be removed first. Failure to do so may result in panel damage. 6 EEV A2L SENSOR A2L SENSOR BRACKET ASSEMBLY LIQUID THERMISTOR UPFLOW FIGURE 3 LOW VOLTAGE WIRES - BLOWER MOTOR, THERMISTOR, EEV, PRESSURE SENSOR AND A2L SENSOR WIRES ARE CONNECTED TO PCB, BUNDLED TOGETHER AND ROUTED THROUGH THE OBLONG GROMMET HOLE LOW VOLTAGE WIRES - BLOWER MOTOR, THERMISTOR, EEV, PRESSURE SENSOR AND A2L SENSOR WIRES ARE CONNECTED TO PCB, BUNDLED TOGETHER AND ROUTED THROUGH THE OBLONG GROMMET HOLE WIRE TIE 2 WIRE TIE 1 PRESSURE SENSOR GAS THERMISTOR WIRE TIE 2 WIRE TIE 1 PRESSURE SENSOR GAS THERMISTOR EEV A2L SENSOR A2L SENSOR BRACKET ASSEMBLY LIQUID THERMISTOR HORIZONTAL LEFT FIGURE 5 HHK0001 High Humidity Kit HHK0002 HHK0003 HHK0011 AHVE36CP1300 AHVE48DP1300 AHVE24BP1300 AHVE48CP1300 AHVE42CP1300 AHVE60DP1300 HIGHIHGHHHUTUaMbMlIeIDD3IITTYYKKITIT Table 1 CMK0015 Condensate Kit AHVE24BP1300 NOTE: If removing only the coil access panel from the unit, the filter access panel must be removed first. Failure to do so may result in panel damage. 7 CMK0016 Condensate Kit AHVE36CP1300 AHVE42CP1300 AHVE48CP1300 CONDENSATE KIT CONDETaNbSleA4TE KIT Table 2 DFKE-02 Down ow Kit AHVE24BP1300 AHVE36CP1300 AHVE42CP1300 AHVE48CP1300 AHVE48DP1300 AHVE60DP1300 DDOOWWTNNaFFbLLleOO5WWKKITIT Table 3 CMK0017 Condensate Kit AHVE48DP1300 AHVE60DP1300 6.3 Downflow/Horizontal Right Installation IMPORTANT NOTE: In the downflow application, to prevent coil pan "sweating", the mandatory downflow kit (DFK) is available through your local distributor. The DFK is not supplied with the air handler and is required to minimize pan sweating on all downflow installations. See Table 5 for the correct DFK and follow the instructions provided for installation. NOTE: For AHVE* only: If installing a filter, an external filter must be used when installing the unit in Horizontal Right (Figure 6), or if the side drain pan is not removed for Down Flow application. A filter will not fit on the internal filter rails in these applications. Refer to Figure 7 and 8 for the location of the components referenced in the following steps. 1. Before flipping the air handler, remove blower access panel and coil access panel. The coil access panel and tubing panel may remain screwed together during this procedure. Remove and retain the seven (7) screws securing the coil access panel to the cabinet and the six (6) screws securing the blower access panel to the cabinet. 2. Before removing the coil, Cut Wire Tie 1, 2 shown in Figure 2-1 and disconnect sensor wires (Thermistor Wire Harness, A2L Sensor Wire Harness, EEV Wire Harness and Pressure sensor Wire Harness) from wire harnesses connectors connected to PCB as shown in Figure 2-3 and secure. Unbundled the wires by cutting Wire Tie. Separate the A2L Sensor Wire Harness from the bundle to reroute as shown in Figure 4 and 6. NOTE: Do not use manifolds, copper lines or the flowrator to pull the coil assembly out. Failure to do so may result in braze joint damage and leaks. 3. Slide the coil assembly out using the bottom drain pan to pull the assembly from the cabinet. 4. For flipping the coil, drain pan extension must be removed for all models. Center support should not be removed while removing the drain pan extension. Side drain pan and horizontal drip shield can be removed for downflow application. The side drain pan and horizontal drip shield cannot be removed for horizontal right. 5. Using the bottom drain pan to hold the coil assembly, slide the coil assembly back into the cabinet on the downflow brackets as shown in Figure 9. 6. Reroute the wire harnesses shown in Figure 4 (Downflow) and Figure 6 (Horizontal Right), secure with Wire Tie 3 and 4 shown in Figure 2-2, connect sensor wires (Thermistor Wire Harness, A2L Sensor Wire Harness, EEV Wire Harness and Pressure sensor Wire Harness) with wire harnesses connectors connected to PCB as shown in Figure 2-3 and secure. Bundled wires after the installation with a Wire Tie according to the requirement of the wire lengths. 7. Re-install the access panels removed in Step 1 as shown in Figure 10. 8. As shown in Figure 8, two drain ports located at the bottom drain pan (horizontally oriented) are to be used for upflow and downflow applications and the two on the side drain pan (vertically oriented) are to be used when the unit is in horizontal right or left configuration. When the unit is in upflow or downflow configuration, the drain ports located on bottom drain pan must be plugged and vice versa. Drain ports located at lower elevation (closer to the ground) in either configuration must be connected to the main drain line and the higher is for the secondary drain line. Upper Tie Plate Control Deck Downflow Bracket Center Support Filter Bracket Filter Access Panel INTERNAL PART TERMINOLOGY Figure 7 8 BLOWER ACCESS PANEL COIL ACCESS PANEL COIL ACCESS PANEL B b ROUND GLASS VIEW TUBING PANEL A a EXTERNAL PART TERMINOLOGY FIGURE 8 Coil slides on the downflow bracket IMPORTANT NOTE: Ensure coil slides on the rails along the groove provided on the drain pan side walls. Failure to do so will result in improper condensate drainage. COIL INSTALLATION FOR DOWNFLOW Figure 9 COIL INSTALLATION FOR DOWNFLOW Figure 9 B b A a ROUND GLASS VIEW TUBING PANEL BLOWER ACCESS PANEL ACCESS PANEL CONFIGURATION FOR DOWNFLOW OR HORIZONTAL RIGHT FIGURE 10 6.3.1 Instruction To Relocate A2L Sensor Bracket Assembly From Downflow To Horizontal Right 1. Take off the coil access panel 2. Take off the drain port gaskets from Figure 1, drain port labeled (A) and (B) on main drain pan and side drain pan 3. Take off the A2L sensor bracket assembly as shown in Figure 1 4. Put A2L sensor bracket assembly to the side drain port correctly as shown in the figure 6. The "FRONT 0121A*****" print on sensor bracket should be in the front 5. Place gaskets back to the drain ports correctly. The "FRONT" print on the gaskets should be in the front. 6. Sensor wiring should be rerouted as shown in Figure 6. 7. Reassemble the blower access panel to the unit. 7 REFRIGERANT LINES NOTE: Care should be taken to route refrigerant tubing in a way which allows adequate access for servicing and maintenance of the air handling unit. 9 WARNING Thisproductisfactory-shippedwithdrynitrogenmixture gasunderpressure.Useappropriateservicetoolsandfollowtheseinstructionstopreventinjury. WARNING CAUTION Applyingtoomuchheattoanytubecanmeltthetube.Torch heatrequiredtobrazetubesofvarioussizesmustbeproportionaltothesizeofthetube.Servicepersonnelmust usetheappropriateheatlevelforthesizeofthetubebeing brazed. Aquenchingclothisstronglyrecommendedtoprevent scorchingormarringoftheequipmentfinishwhenbrazing closetothepaintedsurfaces.Usebrazingalloyof5%minimumsilvercontent. NOTE: To prevent possible damage to the tubing joints, do not handle coil assembly with manifold or flowrator tubes. Always use clean gloves when handling coil assemblies. 7.1 Tubing Size For the correct tubing size, refer to the outdoor HEAT PUMP INSTALLATION & SERVICE REFERENCE. 7.2 Tubing Preparation All cut ends are to be round, burr free, and clean. Failure to follow this practice increases the chances for refrigerant leaks. The suction line is spun closed and requires tubing cutters to remove the closed end. WARNING ONLY BRAZING TECHNIQUES AND APPROVED MECHANICAL JOINTS SHOULD BE USED TO CONNECT REFRIGERANT TUBING CONNECTIONS. NON-APPROVED MECHANICAL CONNECTORS AND OTHER METHODS ARE NOT PERMITTED IN THIS SYSTEM CONTAINING A2L REFRIGERANT. APPROVED MECHANICAL JOINTS WILL BE DETAILED IN THE PRODUCT'S SPECIFICATION SHEETS. Braze joints should be made only with the connections provided external to the cabinet. Do not alter the cabinet nor braze inside the cabinet. To avoid overheating after brazing, quench all brazed joints with water or a wet rag. Before breaking into the refrigerant circuit to make repairs or for any other purpose conventional procedures shall be used. Additionally, the following procedure shall be adhered to: 1. remove refrigerant; 2. purge the circuit with inert gas 3. evacuate 4. purge with inert gas 5. continuously flush or purge with inert gas when using flame to open circuit; 6. open the circuit by cutting or brazing. The refrigerant charge shall be recovered into the correct recovery cylinders if venting is not allowed by local and national codes. 7.3 Tubing Connections EEV Series Air Handler models come with factory installed electronic expansion valve (EEV) pre-installed on the liquid tube. 1. Remove refrigerant tubing panel or coil (lower) access panel. 2. As shown in Figure 1, remove access valve fitting cap and depress the valve stem in access fitting to release pressure. No pressure indicates possible leak. 3. Replace the refrigerant tubing panel. 4. Remove the spin closure on both the liquid and suction tubes using a tubing cutter. 5. Insert liquid line set into liquid tube expansion and slide grommet about 18" away from braze joint. 6. Insert suction line set into suction tube expansion and slide insulation and grommet about 18" away from braze joint. 7. Braze joints. Quench all brazed joints with water or a wet rag upon completion of brazing. 8. Replace access panels, suction line grommet, insulation and all screws. 9. Ensure to replace and hand tighten the red valve on access fitting. Installation of pipe-work must be kept to a minimum. Pipework including piping material, pipe routing and installation must be protected from physical damage and shall not be installed in an unventilated space. Equipment piping in any occupied space shall be installed in such a way to protect against accidental damage in operation and service. Precautions must be taken to avoid excessive vibration or pulsation to refrigeration piping. Protection devices, piping and fittings shall be protected as far as possible against adverse environmental effects, for example, the danger of water collecting and freezing in relief pipes or the accumulation of dirt and debris. Follow standards related to ASHRAE 15, ASHRAE 15.2, IAPMO Uniform Mechanical Code, ICC International Mechanical Code or CSA B52 during any installation. Piping must be accessible for inspection prior to being covered or enclosed in compliance with national and local codes. Ensure that the outlet for the vacuum pump is not close to any potential ignition sources and that ventilation is available. Flexible pipe elements must be protected against mechanical damage, excessive stress by torsion, or other forces. They 10 should be checked for mechanical damage annually. The indoor equipment and pipes must be securely mounted and guarded such that accidental rupture of equipment cannot occur from such events as moving furniture or reconstruction activities. Field-made refrigerant joints indoors shall be tightness tested. LEAK DETECTION AND EVACUATION METHODS Extreme care shall be taken not to overfill the refrigerating system. Prior to recharging the system, it shall be pressure tested with the appropriate purging gas. No refrigerant shall be used for pressure testing to detect leaks. The system shall be leak tested on completion of charging prior to commissioning. A follow-up leak test shall be conducted prior to leaving the site. Using dry nitrogen or dry helium, pressurize the system as mentioned below. System Pressure Testing Once all of the refrigerant line connections are completed, Perform a 3-step nitrogen pressure test as mentioned below. No refrigerant shall be used for pressure testing. Extreme care shall be taken not to over pressurize the system described in step 3. 1. Pressurize the system with nitrogen to 150 PSIG and hold for 3 minutes. If any pressure drops occur, locate, and repair leaks and repeat step 1. 2. Pressurize the system with nitrogen to 325 PSIG and hold for 5 minutes. If any pressure drops occur, locate, and repair leaks and repeat step 1. 3. Pressurize the system with nitrogen to Maximum Allowable Pressure as listed on the serial plate and hold for 1 hour (4 hours recommended). If any pressure drops occur, locate, and repair leaks and repeat step 1. If leaks are found, repair them. After repair, repeat the leak pressure test described above. If no leaks exist, proceed to system evacuation and charging. The minimum test pressure for the low side of the system shall be the low side Maximum Allowable Pressure and the minimum test pressure for the high side of the system shall be the high side Maximum Allowable Pressure, unless the high side of the system cannot be isolated from the low side of the system in which case the entire system shall be pressure tested to the low side Maximum Allowable Pressure. 8 CONDENSATE DRAIN LINES The coil drain pan has a primary and a secondary drain with 3/4" NPT female connections. The connectors required are 3/4" NPT male, either PVC or metal pipe, and should be hand tightened to a torque of no more than 37 in-lbs. to prevent damage to the drain pan connection. An insertion depth of approximately 3/8" to 1/2" (3-5 turns) should be expected at this torque. 1. Ensure drain pan hole is not obstructed. 2. To prevent potential sweating and dripping on to finished space, it may be necessary to insulate the condensate drain line located inside the building. Use Armaflex® or similar material. A secondary condensate drain connection has been provided for areas where the building codes require it. Pitch all drain lines a minimum of 1/4" per foot to provide free drainage. Provide required support to the drain line to prevent bowing. If the secondary drain line is required, run the line separately from the primary drain and end it where condensate discharge can be easily seen. NOTE: Water coming from secondary line means the coil primary drain is plugged and needs immediate attention. Insulate drain lines located inside the building or above a finished living space to prevent sweating. Install a condensate trap to ensure proper drainage. NOTE: When units are installed above ceilings, or in other locations where damage from condensate overflow may occur, it is MANDATORY to install a field fabricated auxiliary drain pan under the coil cabinet enclosure. SUCTION LINE WITH SPIN CLOSURE RUBBER GROMMET SUCTION LINE GROMMET Figure 11 Drain Connection Field-made refrigerant joints indoors shall be tightness tested. The test method shall have a sensitivity of 5 grams (0.176 oz) per year of refrigerant or better under a pressure of at least 0.25 times the maximum allowable pressure. No leak shall be detected. (Should be leak tight) NOTE: The use of a heat shield is strongly recommended when brazing to avoid burning the serial plate or the finish of the unit. Heat trap or wet rags must be used to protect heat sensitive components such as service valves, electronic expansion valve (EEV), thermistors, A2L sensor, and pressure sensors. Air Handler 2" MIN. POSITIVE LIQUID SEAL REQUIRED AT TRAP Figure 12 2.75" MIN 11 The installation must include a "P" style trap that is located as close as is practical to the indoor unit coil. See Figure 12 for details of a typical condensate line "P" trap. NOTE: Units operating in high static pressure applications may require a deeper field constructed "P" style trap than is shown in Figure 12 to allow proper drainage and prevent condensate overflow. NOTE: Trapped lines are required by many local codes. In the absence of any prevailing local codes, please refer to the requirements listed in the Uniform Mechanical Building Code. A drain trap in a draw-through application prevents air from being drawn back through the drain line during fan operation thus preventing condensate from draining, and if connected to a sewer line to prevent sewer gases from being drawn into the airstream during blower operation. Use of a condensate removal pump is permitted when necessary. This condensate pump should have provisions for shutting off the control voltage should a blocked drain occur. See Auxiliary Alarm Switch section for more details. A trap must be installed between the unit and the condensate pump. IMPORTANT NOTE: The evaporator coil is fabricated with oils that may dissolve styrofoam and certain types of plastics. Therefore, a removal pump or float switch must not contain any of these materials. 9 DUCTWORK return air shall be directly ducted to the space. For mechanical ventilation the air extraction opening from the room shall be located equal or below the refrigerant release point. For floor mounted units, it shall be as low as practicable. The air extraction openings shall be located in a sufficient distance from the air intake openings to prevent re-circulation to the space. DO NOT LOCATE THE RETURN DUCTWORK IN AN AREA THAT CAN INTRODUCE TOXIC, OR OBJECTIONABLE FUMES/ODORS INTO THE DUCTWORK. The return ductwork is to be connected to the air handler bottom (upflow configuration). 10 RETURN AIR FILTERS Each installation must include a return air filter. This filtering may be performed at the air handler using the factory filter rails or externally such as a return air filter grille. When using the factory filter rails, a nominal 16x20x1", 20x20x1" or 24x20x1" (actual dimension must be less than 23-½"x20") filter can be installed on a B, C and D cabinet respectively (the cabinet size is the seventh letter of the model number). Washable versions are available through your local distributor. NOTE: If installing a filter, an external filter must be used when installing the unit in Horizontal Right (Figure 6), or if the side drain pan is not removed for Down Flow application. A filter will not fit on the internal filter rails in these applications. IMPORTANT NOTE: If appliance is equipped with UVC coil and air purifier, turn off the appliance before opening filter access door panel to change and install filter. CAUTION Donotoperatethisproductwithoutalltheductwork attached. This air handler is designed for a complete supply and return ductwork system. To ensure correct system performance, the ductwork is to be sized to accommodate 350-450 CFM per ton of cooling with the static pressure not to exceed 0.9" in w.c. Refer to ACCA Manual D, Manual S and Manual RS for information on duct sizing and application. Flame retardant ductwork is to be used and sealed to the unit in a manner that will prevent leakage. 9.1 Return Ductwork Instructions for wiring to external zoning dampers and/ or mechanical ventilation, if required to ensure that upon detection of a leak, the zoning dampers are driven fully open and additional mechanical ventilation is activated. For appliances using R-32 REFRIGERANTS, connected via an air duct system to one or more rooms, the supply and 11 ELECTRICAL AND CONTROL WIRING IMPORTANT: All routing of electrical wiring must be made through provided electrical knockouts. When removing the electrical knockouts, take care not to damage the PCB. Do not cut, puncture or alter the cabinet for electrical wiring. 11.1 Building Electrical Inspection This unit is designed for single-phase electrical supply only. DO NOT OPERATE AIR HANDLER ON A THREEPHASE POWER SUPPLY. Measure the power supply to the unit. The supply voltage must be measured and be in agreement with the unit nameplate power requirements and within the range shown. Refer to Table 7 Nominal Input 115 VAC Minimum Voltage 103 ELECTRICAL VOLTAGE Table 7 Maximum Voltage 126 12 11.2 Wire Sizing Wire size is important to the operation of your equipment. Use the following check list when selecting the appropriate wire size for your unit. · Wire used must be sized to carry the Minimum Circuit Ampacity (MCA) listed on the equipment's Rating Plate. · Refer to the NEC (USA) or CSA (Canada) for wire sizing. The unit MCA for the air handler and the optional electric heat kit can be found on the unit Series and Rating Plate. · Wire must be sized to allow no more than a 2% voltagedropfromthebuildingbreaker/fusepanel to the unit. · Wires with different insulation temperature rating have varying ampacities - be sure to check the temperature rating used. · Refer to the latest edition of the National Electric Code or in Canada the Canadian Electric Code when determining the correct wire size. 11.3 Maximum Overcurrent Protection (MOP) Every installation must include an NEC (USA) or CEC (Canada) approved overcurrent protection device. Also, check with local or state codes for any special regional requirements. Protection can be in the form of fusing or HACR style circuit breakers. The Serial and Rating Plate provides the maximum overcurrent device permissible. NOTE: Fuses or circuit breakers are to be sized larger than the equipment MCA but not to exceed the MOP. 11.4.1 Air Handler Only IMPORTANT: Installation of Air Handler must follow any local codes/regulations. The manufacture recommends a field supplied disconnect switch or breaker must be installed in the electrical circuit that will allow power to be shut-off for service or maintenance. The power supply connects to the stripped black and red wires contained in the air handler electrical compartment. Attach the supply wires to the air handler conductors as shown in the unit wiring diagram using appropriately sized solderless connectors or other NEC or CEC approved means. A ground lug is also provided in the electrical compartment. The ground wire from the power supply must be connected to this ground lug. CAUTION FIREHAZARD!Toavoidtheriskofpropertydamage,personalinjuryorfire,useonlycopperconductors. WARNING HIGH VOLTAGE Disconnectallpowerbeforeservicingorinstallingthisunit.Multiplepowersourcesmay bepresent.Failuretodosomaycausepropertydamage,personalinjuryordeath. 11.4 Electrical Connections Supply Voltage IMPORTANT NOTE: USE COPPER CONDUCTORS ONLY. Knockouts are provided on the air handler top panel and sides of the cabinet to allow for the entry of the supply voltage conductors, as shown in Figure 13. Separate knock-outs must be used for two circuit Heat-kits. If the knockouts on the cabinet sides are used for electrical conduit, an adapter ring must be used in order to meet UL 60335-2-40 safety requirements. An NEC or CEC approved strain relief is to be used at this entry point. Some codes/municipalities require the supply wire to be enclosed in conduit. Consult your local codes. Top of Cabinet Side of Cabinet KNOCK-OUT FOR ELECTRICAL CONNECTIONS Figure 13 WARNING HighVoltage! Toavoidpropertydamage,personalinjuryordeathdue toelectricalshock,thisunitMUSThaveanuninterrupted,unbrokenelectricalground.Theelectricalground circuitmayconsistofanappropriatelysizedelectricalwire connectingthegroundlugintheunitcontrolboxtothe buildingelectricalservicepanel. Othermethodsofgroundingarepermittedifperformedin accordancewiththeNationalElectricCode(NEC)/American NationalStandardsInstitute(ANSI)/NationalFireProtection Association(NFPA)70andlocal/statecodes.InCanada,electricalgroundingistobeinaccordancewiththeCanadian ElectricCode(CSA)C22.1. 11.5 Low Voltage Connections Use N.E.C Class 2 Copper conductor wire. The 24V-control voltage connects the air handler to the room thermostat and outdoor unit. Typical 18 AWG thermostat wire may be used to wire the system components. Two hundred fifty (250) feet is the maximum allowable length of wire between the indoor unit and outdoor unit, and one hundred twenty five (125) feet between indoor unit and thermostat is the maximum allowable length of wire. Low voltage wiring must be connected through the top of the cabinet or either side. See the "Thermostat Wiring" section of this manual for typical low voltage wiring connections. 13 12 ACHIEVING 1.4% AND 2.0% AIRFLOW LOW LEAKAGE RATE Ensure all the gaskets remain intact on all surfaces as shipped with the unit. These surfaces are areas between the upper tie plate and coil access panel, blower access and coil access panels, and between the coil access and filter access panels. Ensure upon installation, that the plastic breaker cover is sitting flush on the blower access panel and all access panels are flush with each other and the cabinet. With these requirements satisfied, the unit achieves less than 1.4% airflow leakage @ 0.5 inch wc static pressure and less than 2% airflow leakage @1inch wc static pressure when tested in accordance with ASHRAE Standard 193. 13 AIRFLOW TRIM Indoor airflow can be trimmed up/down through the outdoor unit user menu. For more detailed information, please refer to the outdoor unit installation manual. · To prevent condensation blow off, positive side trim settings are allowed within the Maximum CFM listed below. (refer to Table 8) The CFM in this table intends actual measured value at installation site. Do not refer to the CFM value in the outdoor spec sheet, displayed in status menu of communication thermostat, or the displayed LEDs on the PCB, as there may be a tolerance difference between displayed and actual measured. Maximum Measured CFM Allowed Up-Flow Down-Flow AHVE24BP0300 910 870 AHVE36CP0300 1450 1390 AHVE42CP0300 1520 1450 AHVE48CP0300 1590 1520 AHVE48DP0300 1590 1520 AHVE60DP0300 1890 1800 HZ-Flow 870 1390 1450 1500 1520 1800 Table 8 Note 4, Note 5 referring to wiring diagram page. Indoor Unit Communicating Board (PCB) Figure 14 14 14 MISCELLANEOUS START-UP CHECKLIST · Prior to start-up, ensure that all electrical wires are properly sized and all connections are properly tightened. · All panels must be in place and secured. For Air Tight application, gasket must be positioned at prescribed locations to achieve 2% leakage. · Tubing must be leak free. · Condensate line must be trapped and pitched to allow for drainage. · Auxiliary drain is installed when necessary and pitched to allow for drainage. · Low voltage wiring is properly connected. · Unit is protected from vehicular or other physical damage. · Return air is not obtained from, nor are there any return air duct joints that are unsealed in, areas where there may be objectionable odors, flammable vapors or products of combustion such as carbon monoxide (CO), which may cause serious personal injury or death. TB5 ALARM SWITCH TB4 Figure 15 14.2 Circulator Blower This air handler is equipped with a variable speed circulator blower. This blower provides several automatically-adjusted blower speeds. CAUTION Donotchangeanydipswitches.Fordefaultsettingssee figure14. IMPORTANT NOTE: If thumb screws are used to access the filter, ensure the washer installed on the screw behind the access panel remains in place after re-installation. NOTE: A removable plug connector is provided with the control to make thermostat wire connections. This plug may be removed, wire connections made to the plug, and replaced. It is STRONGLY recommended that you do not connect multiple wires into a single terminal. Wire nuts are recommended to ensure one wire is used for each terminal. Failure to do so may result in intermittent operation. 14.1 Auxiliary Alarm Switch The control is equipped with two Auxiliary Alarm terminals, labeled TB4 and TB5 which are typically utilized in series with a condensate switch but could also be used with compatible CO sensors or fire alarms. 14.3 Motor Orientation If the unit is in the upflow position, there is no need to rotate the motor. If the unit is in the downflow position, loosen motor mount and rotate motor as shown in the Motor Orientation, Figure 16. Be sure motor is oriented with the female connections on the casing down. If the motor is not oriented with the connections down, water could collect in the motor and may cause premature failure. FRONT VIEW SIDE VIEW TOP WARNI NG SOFTWAREVER. The auxiliary alarm switch must be normally closed and open when the alarm occurs. For example, a normally closed condensate switch will open when the base pan's water level reaches a particular level. The control will respond by turning off the blower motor and outdoor unit and displaying the proper fault codes. If the switch is later detected closed for 30 seconds, normal operation resumes and the error message is removed. (The switch is closed as part of the default factory setting.) The error will be maintained in the equipment's fault history. See Figures 14 and 15 for the connection location. FEMALE CONNECTIONS Motor Orientation Figure 16 IMPORTANT NOTE: If any of the refrigerant leak detection related error codes (A0/AF/A1) are detected at the same time, the action taken when the leak detection error is detected (fan on and relay K4R energized) takes priority. 15 14.4 Accessory Contacts WARNING Peripheral devices to be linked (Example: Humidifier) ALL ACCESSORIES THAT MAY BECOME A POTENTIAL IGNITION SOURCEIFINSTALLED,SUCHASELECTRONICAIRCLEANERS,MUSTONLYBEPOWEREDTHROUGHOURACCESSORY CONTROL BOARD KIT. IF AN ELECTRONIC AIR CLEANER IS ALREADY INSTALLED IN THE DUCT WORK AND NOT CONNECTEDTOTHEACCESSORYCONTROLBOARD,ITWILLHAVETO BE DISABLED OR REMOVED. ENSURE THAT ANY ADDITIONAL WIRING FROM THE INDOOR UNIT TO THE ACCESSORY CONTROL BOARD IS ROUTED AND PROTECTEDFROMDAMAGEANDWEAR,AVOIDINGTHEFLUE PIPE AND ANY JOINTS THAT MAY NEED BRAZED OR DISCONNECTED FOR SERVICE. REFER TO THE PRODUCT SPECIFICATION SHEET FOR THE ACCESSORY CONTROL BOARD KIT PART NUMBER The control is equipped with an Accessory Relay and a pair of ¼ inch accessory terminals which is normally open, labeled ACC-IN [TB6] and ACC-OUT [TB8]. (This is a Dry contact. See accessory contacts graphic). The Accessory Relay can be configured to close with humidification functionality or to close anytime the blower is running. A closed relay means the two terminals will have continuity between them. (The control does not provide power to these contacts). This setting can be made in the "3. Equipment setup menu" of the Amana Brand Smart. "3.EquipmentSetup->Airhandler->Humidifierrelay" For the setup for humidification functionality, the accessory terminals have 3 operational modes. 1. humidifier->humidificationmode 1-1:off Contact (relay) never closes 1-2: on The contact (relay) closes when, [humidification demand: on] and [heating demand:on] and [blowermotor;on] 1-3: independent The contact (relay) close when, [humidificationdemand;on] and [blower motor; on] 2. enable with blower Contact (relay) closes when, [blowermotor;on] 3. non (factory setting) Contact (relay) never closes 5A max: 250VAC 10A max: 125VAC 5A max: 30VDC ACC-IN (TB 6) ACC-OUT (TB 8) ACCESSORY CONTACTS Figure 17 14.5 Leak Detection Output (Relay K4R) The control board is equipped with three Refrigerant Leak Detection 1/4 inch quick connect terminals, labeled TB11, TB12 and TB13 that are used for the control of optional kits (zoning damper, UV light, ventilator). When a refrigerant leak is detected, as indicated by error codes A0, A1 or AF, relay K4R is activated by the control. See the table 9 for the conditions of relay K4R when the error code is issued. When refrigerant leak alarm is issued, dampers must be fully open, UV light must be turned off and accessory ventilation fans must be activated. See the table 10 for the specification for relay K4R and Figures 14 and 18 for the terminals' location. Items Connections TB11 (COM) / TB12 (NC) TB11 (COM) / TB13 (NO) Error Code A0/A1/AF not issued CLOSED OPEN Error Code A0/A1/AF issued OPEN CLOSED RelayK4RwhenA0/A1/AFisissued Table 10 Contact types 1 Form C, Dry contact Form A contact (TB11-13): Contact rating (resistive) 10 A 125 V AC, 5 A 250 V AC Form B contact (TB11-12): 3 A 125 V AC, 2 A 250 V AC Form A contact (TB11-13): 1,250 VA, 150 W Max. switching power (resistive) Form B contact (TB11-12): 500 VA, 30 W Form A contact (TB11-13): Max. switching current 10 A (125 V AC) Form B contact (TB11-12): 3 A (125 V AC) RelayK4RSpecifications Table 9 16 Leak Detect Output K4R 15.2 Diagnostic Chart Refer to the Troubleshooting Chart at the end of this manual for assistance in determining the source of unit operational problems. The 7 segment LED display will provide any active fault codes. TB12 TB13 TB11 NC NO COM Relay K4R Figure 18 15 TROUBLESHOOTING 15.1 Electrostatic Discharge (ESD) Precautions NOTE: Discharge body's static electricity before touching unit. An electrostatic discharge can adversely affect electrical components. Use the following precautions during air handler installation and servicing to protect the integrated control module from damage. By putting the air handler, the control, and the person at the same electrostatic potential, these steps will help avoid exposing the integrated control module to electrostatic discharge. This procedure is applicable to both installed and uninstalled (ungrounded) blowers. 1. Disconnect all power to the blower. Do not touch the integrated control module or any wire connected to the control prior to discharging your body's electrostatic charge to ground. 2. Firmly touch a clean, unpainted, metal surface of the air handler blower near the control. Any tools held in a person's hand during grounding will be discharged. 3. Service integrated control module or connecting wiring following the discharge process in step 2. Use caution not to recharge your body with static electricity; (i.e., do not move or shuffle your feet, do not touch ungrounded objects, etc.). If you come in contact with an ungrounded object, repeat step 2 before touching control or wires. 4. Discharge your body to ground before removing a new control from its container. Follow steps 1 through 3 if installing the control on a blower. Return any old or new controls to their containers before touching any ungrounded object. 15.3 Fault Recall The integrated control module is equipped with a momentary push-button switch that can be used to display the last six faults on the 7 segment LED display. Follow the sequence to use the feature. The control must be in Standby Mode (no thermostat inputs). 1. Press FAULT RECALL button for 2 to 5 seconds*, so that 7 segment display shows "- -". 2. Release FAULT RECALL button in this period, 7 segment display shows the most recent fault. 3. Each time FAULT RECALL button is pressed after that**, 7 segment display outputs next occurred fault. 4. After displaying the series of recent faults, 7 segment displays blink "- -" and goes back to Standby Mode. To clear the error code history: 1. Press FAULT RECALL button for 10 to 15 seconds***, so that 7 segment displays blink "- -". 2. Release FAULT RECALL button in this period, 7 segment displays show "88" and faults are cleared. NOTE: * If FAULT RECALL button is not pressed long enough (for 2 to 5 seconds), control goes back to Standby Mode. If the FAULT RECALL button is pressed for 5 to 10 seconds, control goes back to Standby Mode. ** Consecutively repeated faults are displayed a maximum of three times. *** If FAULT RECALL button is pressed for longer than 15 seconds, control goes back to Standby Mode. 16 FULLY COMMUNICATING AMANA® BRAND SYSTEM NOTE: For a detailed procedure of thermostat commissioning process, please visit the Amana Brand Smart Thermostat website at http://www.amana-hac.com/. 16.1 Overview A fully communicating Amana Brand system is a system that includes a compatible air handler and heat pump with a communicating thermostat. Fault Recall Figure 19 7 Segment Diagnostic Displays The Air Handler (AHVE*115V) can be connected to HP. A fully communicating Amana Brand heating/air conditioning system differs from a non-communicating/ traditional system in the manner in which the indoor unit, outdoor unit and thermostat interact with one another. In a traditional system, the thermostat sends commands to the indoor and outdoor units via analog 24 VAC signals. It is a one-way communication path. The indoor and outdoor units typically do not return information to the thermostat. 17 For a fully communicatingAmana Brand system, the indoor unit, outdoor unit, and thermostat "communicate" digitally with one another. It is now a two-way communications path. The thermostat still sends commands to the indoor and outdoor units and may also request and receive information from both the indoor and outdoor units. This information may be displayed on the communicating thermostat. The indoor and outdoor units also interact with one another. The outdoor unit may send commands to or request information from the indoor unit. This twoway digital communications between the thermostat and subsystems (indoor/outdoor unit) is the key to unlocking the benefits and features of the fully communicating Amana Brand system. air handler, in turn, sends the demand to the ECM motor. The ECM motor delivers the requested continuous fan airflow. 16.3 Thermostat Wiring NOTE: Refer to section Electrical Connections for 208/230 volt line connections to the air handler. NOTE: It is STRONGLY recommended that no more than two wires be connected in a single terminal. If two wires are used in a terminal, it is recommended the same type of wire be used (i.e. Both stranded or solid for secure connection). Failure to do so may result in intermittent operation. Two-way digital communications is accomplished using only two wires. The thermostat and air handler controls are powered with 24 VAC. A maximum of 4 wires between the air handler and thermostat is required to operate the system. An inverter equipped outdoor unit does not require 24 VAC. Only the 2 digital communication wires are required between the air handler and inverter unit (pins 1 and 2 on the thermostat connector.) 16.2 Airflow Consideration Airflow demands are managed differently in a fully communicating system than in a non-communicating wired system. The system operating mode (as determined by the thermostat) determines which unit calculates the system airflow demand. If the indoor unit is responsible for determining the airflow demand, it calculates the demand and sends it to the ECM motor. If the outdoor unit or thermostat is responsible for determining the demand, it calculates the demand and transmits the demand along with a fan request to the indoor unit. The indoor unit then sends the demand to the ECM motor. Table 11 lists the various fully communicating Amana brand systems, the operating mode, and airflow demand source. For example, assume the system is a heat pump matched with an air handler. With a call for low stage cooling, the heat pump will calculate the system's low stage cooling airflow demand. The heat pump will then send a fan request along with the low stage cooling airflow demand to the air handler. Once received, the air handler will send the low stage cooling airflow demand to the ECM motor. The ECM motor then delivers the low stage cooling airflow. See the applicable fully communicating Amana brand System air conditioner or heat pump installation manual for the airflow delivered during cooling or heat pump heating. Typical 18 AWG thermostat wire may be used to wire the system components. Two hundred fifty (250) feet is the maximum of wire between indoor unit and outdoor unit, and one hundred twenty five (125) feet between indoor unit and thermostat. 16.3.1 Two-Wire Outdoor and Four-Wire Indoor Wiring Typical wiring will consist of two wires between the indoor unit and outdoor unit and four wires between the indoor unit and thermostat. Figure 20 shows the required wires are: data lines, 1 and 2; "R" (24 VAC hot) and "C" (24 VAC common). 16.4 Network Troubleshooting Occasionally the need to troubleshoot the network may arise. The integrated air handler control has some onboard tools that can be used to troubleshoot the network. These tools are: red communications LED, green receive (Rx) LED, and the learn button. Refer to the Communications Troubleshooting Chart at the end of this manual for error codes, possible causes and corrective actions · Red communications LED Indicates the status of the network. The Communications Troubleshooting Chart on the following page indicates the LED status and the corresponding potential problem. · Green receive LED Indicates network traffic. The following table indicates the LED status and the corresponding potential problem. · Learn button Used to reset the network. Depress the button for approximately 2 seconds to reset the network. In continuous fan mode, the communicating thermostat provides the airflow demand. The communicating thermostat provides 4 continuous fan speeds (25%, 50%, 75% and 100% of maximum airflow). During continuous fan operation, the thermostat sends a fan request along with the continuous fan demand to the air handler. The 18 16.5 System Troubleshooting NOTE: Refer to the instructions accompanying the Communicating compatible outdoor HP unit for unit specific troubleshooting information. Refer to the Troubleshooting Chart at the end of this manual for a listing of possible air handler error codes, possible causes and corrective actions. ATTENTION INSTALLER IMPORTANT NOTICE! Please read carefully before installing this unit. · Power line terminal #C from Indoor unit must connect to terminal #C on thermostat and power line terminal #R from indoor unit must connect to terminal #R on thermostat. Verify wires are not reversed. (Note: The order of the terminals of the indoor unit and the Amana Brand Smart thermostat may be different.) · Do not attach any wires to the R & C Terminals on the HP, as they are not needed for inverter unit. · Data line terminal #1 from HP must connect to terminal #1 on indoor unit and thermostat and data line terminal #2 from HP must connect to terminal #2 on indoor unit and thermostat. Verify wires are not reversed. System System Operating Mode Cooling Heat Pump + Air Handler Heat Pump Heating Only Continuous Fan Airflow Demand Source Heat Pump Heat Pump Thermostat Table 11 1 2 C R Communicating Thermostat 125 ft.(*) 250 ft.(*) 1 2 RC Air Handler Blower Integrated Control Module 1 2 RC Heat Pump Integrated Control Module (*) Allowable Maximum Length SYSTEM WIRING Figure 20 16.6 Refrigeration Detection System (RDS) Function: Refrigerant Detection System (RDS) is installed in this equipment to detect any R32 leakage in the coil and take action to mitigate any risk of ignition/ fire. Operation: When there is a leak detected, the RDS shall send signals for the unit to perform these actions: 1. Turn on the blower to circulate air with Mitigation CFM 2. Switch off electric heater 3. Error code A0 issued 4. Fully open damper (*1) 5. Switch off UV light (*1) (*1) If the damper and/or UV lamp are installed in the field, be sure to use the "15.5 Leak detection output" function and construct the wiring so that they will activate as mentioned above when a leak is detected. Servicing: Before servicing identify the Mode of operation of the system by reading the 7-Segment Display on the PCB which can be seen through the round glass view on top access panel and matching the 7-Segment Display with mode of operation in Diagnostic label which is attached on the Blower access panel. After identifying the mode of operation take recommended actions as specified in Table DIAGNOSTIC CODES. Instruction to replace PCB: Take off the blower access panel, disconnect the PCB harness and A2L sensor wire connected to the PCB, detach the PCB from the 4 plastic standoffs, install new PCB on 4 plastic standoffs which is installed on metal bracket, re-connect the PCB harness and A2L sensor wire to the new PCB per wiring instruction as attached to the equipment, reassemble the blower access panel to the unit. Instruction to replace A2L sensor: Take off the blower access panel and coil access panel, take off the drain port gasket on the drain pan in front of the sensor bracket, disconnect the A2L sensor wire from the PCB, take off sensor bracket assembly from the drain pan, remove plastic push pins and A2L sensor off the sensor bracket, install new A2L sensor and plastic push pins to sensor bracket, re-install A2L sensor bracket assembly to the drain port correctly as shown in the figures 3, 4, 5 and 6. The "FRONT 0121A*****" print on sensor bracket should be facing away from the equipment, place gaskets back to the drain ports correctly. The "FRONT" print on the gaskets should be in the front facing away from the equipment, reassemble the blower access panel and coil access panel to the unit. 19 service indicator; read technical manual operator's manual; operating instructions warning; low Flammable materials UN GHS flame symbol MarkingSymbolTable Mitigation CFM: When the one of the error codes A0/A1/ AF that is related to refrigerant leak detection system is issued, the blower is activated with the mitigation CFM above the Qmin shown in Table 1 (around 470 CFM). 16.7 Refrigerant Leak Test Conduct Refrigerant Leak Test to check that the refrigerant leak detection system works when a damper and/or UV light are installed. To start Refrigerant Leak Test, go to "Refrigerant Leak Detection" menu under "4 System Optimization" on the thermostat's commissioning menu. Switch "Refrigerant leak test" setting to "Run test" to start the refrigerant leak test. When the unit goes into Refrigerant Leak Test, the message will be displayed on the thermostat to inform that it's in testing mode. Check the refrigerant leak detection actions work properly (the blower runs, the zoning damper fully opens, and the UV light is switched off.) After confirming these actions, change the setting for "Refrigerant leak test" to "Stop" to finish the test. Note: The refrigerant leak test is automatic after 1 hour, even if you do not set it to "stop" 20 TROUBLESHOOTING 21 Error Code PCB LED Display Description Possible Causes · No power supply to ID blower / no EE No display (EE display is EMG mode) 24 volt power to PCB · Blown fuse or circuit breaker · PCB has an internal fault · Manual disconnect switch OFF · No power supply to ID blower / no 24 volt power to PCB · Blown fuse or faulty circuit breaker · Control board has internal fault Eb E_Eb Selecting "no heater kit" and receiving electric heat demand · This air handler is set for heating operation using the heater kit even though it is not compatible with the heater kits. E5 E_E5 Fuse Open · Fuse (F1U) is blown · Connector TB10 is open EF E_EF Auxiliary Switch Open · High water level in the evaporation coil · The connected alarm device is activated · Auxiliary Alarm terminals (TB4, TB5) are open d0 E_d0 d1 E_d1 d4 E_d4 Data not on Network Invalid Data on Network Invalid Memory Card Data · No shared data on the network · Wrong shared data on the network · Wrong memory card data b0 E_b0 Blower Motor not running · Fan/motor obstruction · Power interruption (low voltage) · Incorrect / loose wiring b1 E_b1 Blower Motor Communication error · Incorrect / loose wiring · Power interruption (low voltage) b2 E_b2 Blower Motor HP Mismatch · Incorrect size motor · Invalid shared data · Fan/motor obstruction or blocked filters b3 E_b3 Blower Motor operating in Power, · Power interruption (low voltage) Temp or Speed Limiting conditions · Incorrect wiring · Blockage in the airflow (ductwork) or ductwork undersized Corrective Actions · Assure 115 volt and 24 volt power to blower and control board. · Check fuse F2U on control board · Check for possible short in 115 volt and 24 volt circuits. Repair as necessary. · Replace the control board. · Make sure to set "Backup Defrost heat" to "always OFF" (OD Setting). · Set all dip switches from S9-S12 in OFF condition (ID Setting). · Set Heating emergency mode to "OFF" (ID Setting). · Replace fuse · Check wiring to AUX alarm, communication connection. · Replace the control board After recovering the system, E5 will still be displayed on the indoor PCB (about 30 seconds). BLOWN FUSE will still be displayed on the thermostat within 45 seconds. They will be cleared automatically. · Check water level in drain pan · Check alarm device. · Close Auxiliary terminals TB4 and TB5 if not used After recovering the system, EF will still be displayed on the indoor PCB (about 30 seconds). AUXILIARY CONTACTS OPEN will still be displayed on the thermostat within 45 seconds. They will be cleared automatically. · Populate shared data set using memory card. · Populate shared data set using memory card. · Replace circuit board · Rewrite data using the correct memory card · Check for obstruction on the fan/motor · Verify the input voltage at the motor · Check wiring or tighten wiring connections if needed · Replace circuit board or motor · Check wiring or tighten wiring connections if needed · Verify the input voltage at the motor · Replace circuit board or motor · Correct motor installation · Populate shared data set using memory card. · Check for obstruction on the fan/motor/ductwork, clean filters · Verify the input voltage at the motor · Check wiring · Replace motor TROUBLESHOOTING 22 Error Code PCB LED Display Description Possible Causes Corrective Actions b9 E_b9 9b E_9b 70 E_70 Low Indoor Airflow (without Electric Heat mode) · Fan/motor obstruction or blocked filters · Restrictive ductwork or ductwork undersized · Wiring disconnected · Wrong outdoor/indoor combination · ID motor failure Low Indoor Airflow (with Electric Heat mode) · Fan/motor obstruction or blocked filters · Restrictive ductwork or ductwork undersized · ID motor failure · Wiring disconnected EEV disconnection detected · Indoor EEV coil not connected · Incorrect wiring to EEV · Check for obstruction on the fan/motor · Check ductwork/filter for blockage, clean filters · Remove obstruction. Verify all registers are fully open · Check the connections and the rotation of the motor · Verify the input voltage at the motor · Verify ductwork is appropriately sized for system. Resize/replace ductwork if needed · Replace motor · Check for obstruction on the fan/motor · Check ductwork/filter for blockage, clean filters · Remove obstruction. Verify all registers are fully open · Check the connections and the rotation of the motor · Verify the input voltage at the motor · Verify ductwork is appropriately sized for system. Resize/replace ductwork if needed · Replace motor · Check Indoor EEV coil connection (PCB and junction connector) · Replace EEV coil · Check the resistance value of EEV coil (refer service manual) · Replace the control board · Check the connection to liquid thermistor (PCB and junction connector) · Open (or) short circuit of the liquid thermistor (X5A) · Check the resistance value of the thermistor (refer service manual) 73 E_73 Liquid side thermistor abnormality · Liquid thermistor reading incorrect or values outside the normal range · Replace thermistor · Replace the control board · Check the connection to gas thermistor (PCB and junction connector) 74 E_74 Gas side thermistor abnormality · Open (or) short circuit of the gas thermistor (X5A) · Check the resistance value of the thermistor (refer service manual) · Gas thermistor reading incorrect or values outside the normal range · Replace thermistor · Replace the control board 75 E_75 Pressure sensor abnormality · Open (or) short circuit of the Pressure sensor (X15A) · Pressure sensor reading incorrect or values outside the normal range · Check the connection to pressure sensor (PCB and junction connector) · Check the output voltage of the pressure sensor (refer service manual) · Replace pressure sensor · Replace the control board 77 E_77 A0 E_A0 Indoor Unit - Thermostat communication error (start-up & during operation) Refrigerant Leak Alarm · Incorrect wiring between ID unit and thermostat. The system may have the communication error without error code 77 on the indoor PCB. Follow section 17.5 SYSTEM TROUBLESHOOTING · Thermostat failure · Power interruption (low voltage) · Check for thermostat and indoor unit wiring · Verify the input voltage at the ID unit and thermostat After recovering the system with power supply, TSTAT ID NO COM will continue to be displayed on the thermostat within 2 minutes. The error code will be cleared automatically. · Replace control board or thermostat · Press "LEARN" button on PCB for more than 5 seconds to reestablish network · Refrigerant Leak · A2L sensor failure · Ventilate the room before conducting any actions · Check coil leakage · Remove refrigerant from system and replace coil AF E_AF A2L Sensor Communication Error · A2L sensor not connected · Incorrect wiring of A2L sensor A1 E_A1 A2L Sensor Internal Alarm · A2L sensor failure · Check the connection of A2L sensor · Replace A2L sensor · Replace A2L sensor · Replace control board NETWORK TROUBLESHOOTING If a network communication error code has occurred, use the following steps to help troubleshoot the system. (For network communication error codes, refer to the table below and the tables of error codes for outdoor unit and indoor unit.) After any wiring changes have been made or the dip switches of DS1 on the outdoor control board and/or DS 7 on the indoor unit control board have been changed, apply power to the system and see if the error codes have cleared. 1. Confirm low voltage wiring is correct per installation instructions. Check for miswiring. (i.e. Terminal 1 and 2 is reversed.) NOTE: A removable plug connector is provided with the control to make thermostat wire connections. This plug may be removed, wire connections made to the plug, and replaced. It is strongly recommended that you do not connect more than two wires into a single terminal in the field because there is a risk of the wires becoming loose, which may result in intermittent operation. 2. Check wires for damage. (i.e. Broken wire at terminal, broken inside wire nuts or damaged cable between units.) 3. Perform continuity check on wires to make sure cable is OK. Replace the cable if necessary. 4. Change both dip switch 1 and 2 of DS1 on the outdoor unit control board. In case the indoor unit control board has DS7, refer to the following table 12. Try the combinations of dip switches for DS1 and DS7 on the outdoor and indoor unit control board, respectively, one by one. Check that any combinations clear the communication error. These dip switches change the termination resistance value of the communication circuit. Table 12 The integrated control module has some onboard tools that can be used to troubleshoot the network. Refer to Table 13 These tools are: red communications LED, green receive (Rx) LED, and the learn button. · Red communications LED Indicates the status of the network. The table below indicates the LED status and the corresponding potential problem. · Green receive LED Indicates network traffic. The table below indicates the LED status and the corresponding potential problem. · LEARN button Used to reset the network. Press the button for approximately 5 seconds to reset the network LED COLOR Red Communications LED (H2P) LED Status OFF 1 Flash 2 Flash Indication Normal condition Communication failure Out-of-box reset OFF No power Communications error 1 Steady Flash Green Receive LED (H3P) Rapid Flashing On Solid No network found Normal network traffic Terminal 1/Terminal 2 miss-wire Probable Causes Corrective Actions · None · None · Unknown packet is received · Communications failure · Depress learn button · Verify wiring connection · Control power up · Learn button depressed · None · No power to unit · Open fuse · Communication error · Check circuits breakers and fuses; Reset/Replace if needed · Reset network by depressing learn button · Check communication wires (terminal 1/terminal 2 wires); Replace if needed · Check for shorts in low voltage wiring · Broken/disconnected communication wire(s) · Unit is installed as a legacy/traditional system · Check communication wires (terminal 1/terminal 2 wires); Replace if needed · Check installation type (legacy/traditional or communicating) · Control is " taking" on network as expected · None · Terminal 1 and Terminal 2 wires reversed at indoor unit, thermostat, or outdoor unit · Short between terminal 1 and terminal 2 wires · Check communication wires (terminal 1/terminal 2 · Short between terminal 1 or terminal 2 two wires wires); Replace if needed and terminal C (24VAC) or terminal R (24VAC, COM) Table 13 23 DIAGNOSTIC CODES 7 SEGMENT LED DISPLAY (NO DISPLAY) On EE Eb Ed E5 EF d0 d1 d4 b0 b1 b2 b3 b9 9b 70 73 74 75 77 Hu DESCRIPTION OF CONDITION INTERNAL CONTROL FAULT / NO POWER STANDBY, WAITING FOR INPUTS EMERGENCY MODE RUNNING NO HEATER KIT INSTALLED - SYSTEM CALLING FOR AUXILIARY HEAT (MINOR ERROR CODE) HEATER KIT DIP SWITCHES NOT SET PROPERLY FUSE OPEN AUXILIARY SWITCH OPEN DATA NOT ON NETWORK INVALID DATA ON NETWORK INVALID MEMORY CARD DATA BLOWER MOTOR NOT RUNNING BLOWER MOTOR COMMUNICATION ERROR BLOWER MOTOR HP (HORSE POWER) MISMATCH BLOWER MOTOR OPERATING IN POWER, TEMPERATURE, OR SPEED LIMIT LOW INDOOR AIRFLOW (MINOR ERROR CODE) (WITHOUT ELECTRICAL HEATER MODE) LOW INDOOR AIRFLOW (MAJOR ERROR CODE) (ELECTRICAL HEATER MODE ONLY) EEV OPEN CIRCUIT LIQUID TEMPERATURE ABNORMALITY / THERMISTOR OPEN CIRCUIT GAS TEMPERATURE ABNORMALITY / THERMISTOR OPEN CIRCUIT PRESSURE ABNORMALITY / PRESSURE SENSOR OPEN CIRCUIT INDOOR UNIT - THERMOSTAT COMMUNICATION ERROR (STARTUP OPERATION & DURING OPERATION) HUMIDIFICATION DEMAND (RUNNING WITHOUT HEATING) A0 A2L REFRIGERANT LEAKAGE ALARM AF A2L SENSOR COMM ALARM A1 A2L SENSOR INTERNAL ALARM 7SEG LED WILL FLASH AIRFLOW RATE 0140A01620-A 24 SETTING THE MODE DISPLAY MODE DISPLAY INTRODUCTION A 2-digit display is provided on the printed circuit board (PCB) as a backup tool to the thermostat for accessing error codes and erasing error code history of the indoor unit. Follow the information provided in this section to learn how to use the mode display DISPLAY The display consists of 2 digits. DISPLAY BUTTON LAYOUT The display buttons shown can be used to navigate and select items: FAULT CODE HISTORY NAVIGATION This mode will allow the user to see the six most recent system faults. Please follow the flow chart to navigate to error codes from screen zero. For a list of the fault codes, please see the TROUBLESHOOTING tables in this document. It is also possible to erase all the diagnostics codes from this menu. 25 SETTING THE MODE DISPLAY <SCREEN ZERO> Release Fault Recall in less than 2 sec Hold Fault Recall for more than 2 sec Solid Display Hold Fault Recall for more than 5 sec Release Fault Recall between 2 to 5 sec Release Fault Recall in between 5 to 10 sec <SCREEN ZERO> First Error Code Press Fault Recall for Error Code Second Error Code Press Fault Recall for Error Code Last Error Code Press Fault Recall to complete list Flashing Display Idle for 3 mins. Hold Fault Recall for more than 10 sec Release Fault Recall aer 15 sec Flashing Display 0.5 sec ON 0.25 sec OFF Release Fault Recall in between 10 to 15 sec Solid Display "88" for 3 sec before erasing all Diagnosc Codes 0.2 sec ON 0.2 sec OFF 26 WIRING DIAGRAM NOTE: THESE INSTRUCTIONS ARE SPECIFICALLY FOR AHVE* MODELS. DO NOT ATTEMPT TO APPLY THESE DIAGRAMS FOR ANY OTHER MODELS. HIGH VOLTAGE! DISCONNECT ALL POWER BEFORE SERVICING. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SOMAYCAUSEPROPERTYDAMAGE,PERSONALINJURYORDEATH. (SEE NOTE 3) GROUND LUG 115V 1PH / 60Hz LN WH BK WH BK BK RD COM BK 120 VAC RD COM SEE NOTE 11 TR1 40VA BK RD 120 VAC TR2 40VA 24VAC PU YL 24VAC BL RD ECM MOTOR GR PK ID BLOWER FPL 1 2 3 4 5 6 7 8 9 10 11 12 MPL RD BK BL GY BK RD ~~ 1234 1234 1234 1234 1234 1234 INSTALLING AUX ALARM (ALARM) (SEE NOTE 7) ~~ TB4 RD BL ~~ TB5 RELAY OUT (ACCESSORY OUT) RELAY IN (ACCESSORY IN) PU AUX ALARM (ALARM) YL GR RD TB5 TB4 ACC-OUT TB8 K3R ACC-IN TB6 TH2 TB10 COM TB7 TR2 TB3 TR1 TH1 TB2 TB1 THERMOSTAT (SEE NOTE 10) A2L SENSOR LEAK DETECT OUTPUT (SEE NOTE 9) III BL RD GY BK COM TB11 NO TB13 NC TB12 F2U 1 2 3 4 X9A CR2 1 K4R X8A X12A X13A DS7 RX LED (SEE NOTE 5) 1 2 X7A RAM MONITOR WRITER FLASH F1U K1R K2R X1A PS X2A DS6 DATA SHARE SEG2 SEG1 CPU LED STATUS LED (SEE NOTE 5) DS5 MPU (SEE NOTE 4) FAULT RECALL DS1 BS2 DS4 DS2 DS3 NOTES: X3A EEV YL GY BK RD OR M EEV COIL X15A X5A BS1 LEARN ON OFF PRESSURE SENSOR THERMISTOR (HEAT EXCHANGER 1,2) INTEGRATION TYPE INTEGRATED CONTROL MODULE 1. MANUFACTURER'S SPECIFIED REPLACEMENT PARTS MUST BE USED WHEN SERVICING. 2. IF ANY OF THE ORIGINAL WIRES AS SUPPLIED WITH THIS UNIT MUST BE REPLACED, IT MUST BE REPLACED WITH WIRING MATERIAL HAVING A TEMPERATURE RATING OF AT LEAST 105°C. USE COPPER CONDUCTORS ONLY. 3. UNIT MUST BE PERMANENTLY GROUNDED AND CONFORMED TO N.E.C AND LOCAL CODES. 4. TO RECALL THE LAST 6 FAULTS, MOST RECENT TO LEAST RECENT, DEPRESS FAULT RECALL BUTTON FOR MORE THAN 2 SECONDS WHILE IN STANDBY (NO THERMOSTAT INPUTS) 5. RED STATUS LED PROVIDES NETWORK STATUS. GREEN RX LED INDICATES NETWORK TRAFFIC. USE LEARN BUTTON TO RESET NETWORK. 6. THE POSITION OF SELECTOR SWITCHES (DS1 - DS7) INDICATE FACTORY SETTING. 7. REMOVE SHORT RED WIRE AND PUT AUX ALARM SWITCH WHEN INSTALLING AUX ALARM SWITCH. 8. HEATER KIT IS NOT COMPATIBLE WITH THIS MODEL. 9. THIS OUTPUT OPERATES WHEN A REFRIGERANT LEAK IS DETECTED. (DRY CONTACT) USE THIS CONTACT WHEN INTERLOCKING UV LIGHT, DAMPER, ETC. 10. USE N.E.C CLASS 2 WIRE. COMPONENT LEGEND: LOW VOLTAGE LOW VOLTAGE FIELD HIGH VOLTAGE HIGH VOLTAGE FIELD JUNCTION TERMINAL INTERNAL CONNECTIONS RESISTOR FUSE (F1U, F2U) PLUG CONNECTION EQUIPMENT GROUND FIELD GROUND DIP SWITCH(OFF) READ THE INSTRUCTIONS ON OFF FIELD SPLICE COMPONENT CODES: DS1 - DS7 TR FPL MPL ID AUX COM SELECTOR SWITCH TRANSFORMER FEMALE PLUG MALE PLUG INDOOR AUXILIARY 24V COMMON COLOR CODES: BL - BLUE RD - RED YL - YELLOW OR - ORANGE BK - BLACK GY - GREY BR - BROWN GR - GREEN PU - PURPLE WH - WHITE PK - PINK 11. LOW VOLTAGE TRANSFORMER RATED 24VAC OUTPUT 40VA @ 1.667 AMP. CLASS III III 24V THERMOSTAT CONNECTIONS SEE NOTE 10 L DISCONNECT 115V / 1PH / 60Hz N ID BLOWER 120 VAC L N 40 VA TR1 24 VAC TH1 COM R 24V 1 FUSE 3 A TH 2 120 VAC TR2 24 VAC COM 2 C TO MICRO SEE NOTE 7 TB4 AUX ALARM SWITCH TB5 +VDC (1) RX (2) TX (3) GND (4) TR2 COM COM FUSE 3.15 A TH1 13.5 VDC 5 VDC MICRO TR1 COM X5A (4) X5A (3) X5A (2) X5A (1) X15A (4) X15A (3) X9A (4) X9A (1) X3A (6) X3A (1) INTEGRATED CONTROL MODULE ID BLOWER THERMISTOR THERMISTOR PRESSURE SENSOR A2L SENSOR EEV COIL 0140A20075-A Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring. 27 AIR HANDLER AIR HANDLER HOMEOWNER'S ROUTINE MAINTENANCE RECOMMENDATIONS We strongly recommend a bi-annual maintenance checkup be performed before the heating and cooling seasons begin by a qualified servicer. REPLACE OR CLEAN FILTER IMPORTANT NOTE: Never operate unit without a filter installed as dust and lint will build up on internal parts resulting in loss of efficiency, equipment damage and possible fire. An indoor air filter must be used with your comfort system. A properly maintained filter will keep the indoor coil of your comfort system clean. A dirty coil could cause poor operation and/or severe equipment damage. Your air filter or filters could be located in your furnace, in a blower unit, or in "filter grilles" in your ceiling or walls. The installer of your air conditioner or heat pump can tell you where your filter(s) are, and how to clean or replace them. It has been determined that many coil cleaners and drain pan tablets contain corrosive chemicals that can be harmful to aluminum tube and fin evaporator coils. Even a onetime application of these corrosive chemicals can cause premature aluminum evaporator coil failure. Any cleaners that contain corrosive chemicals including, but not limited to, chlorine and hydroxides, should not be used. An alternate cleaning method is to use one of the products listed in TP-109* to clean the coils. The cleaners listed are the only agents deemed safe and approved for use to clean round tube aluminum coils. TP-109 is also available on the web site in Partner Link > Service Toolkit. NOTE: Ensure coils are rinsed well after use of any chemical cleaners. Check your filter(s) at least once a month. When they are dirty, replace or clean as required. Disposable type filters should be replaced. Reusable type filters may be cleaned. You may want to ask your dealer about high efficiency filters. High efficiency filters are available in both electronic and non-electronic types. These filters can do a better job of catching small airborne particles. MOTORS Indoor and outdoor fan motors are permanently lubricated and do not require additional oiling. WARNING HIGH VOLTAGE Disconnectallpowerbeforeservicingorinstallingthisunit.Multiplepowersourcesmay bepresent.Failuretodosomaycausepropertydamage,personalinjuryordeath. ALUMINUM INDOOR COIL CLEANING (QUALIFIED SERVICER ONLY) This unit is equipped with an aluminum tube evaporator coil. The safest way to clean the evaporator coil is to simply flush the coil with water. This cleaning practice remains as the recommended cleaning method for both copper tube and aluminum tube residential evaporator coils. BEFORE YOU CALL YOUR SERVICER CAUTION Toavoidtheriskofequipmentdamageorfire,installthe sameamperagebreakerorfuseasyouarereplacing.IFthe circuitbreakerorfuseshouldopenagainwithinthirtydays, contactaqualifiedservicertocorrecttheproblem. Ifyourepeatedlyresetthebreakerorreplacethefuse withouthavingtheproblemcorrected,youruntheriskof severeequipmentdamage. · Check the thermostat to confirm that it is properly set. · Wait 15 minutes. Some devices in the outdoor unit or in programmable thermostats will prevent compressor operation for awhile, and then reset automatically. Also, some power companies will install devices which shut off air conditioners for several minutes on hot days. If you wait several minutes, the unit may begin operation on its own. · Check the electrical panel for tripped circuit breakers or open fuses. Reset the circuit breakers or replace fuses as necessary. · Check the disconnect switch near the indoor furnace or blower to confirm that it is closed. · Check for obstructions on the outdoor unit . Confirm that it has not been covered on the sides or the top. Remove any obstruction that can be safely removed. If the unit is covered with dirt or debris, call a qualified servicer to clean it. · Check for blockage of the indoor air inlets and outlets. Confirm that they are open and have not been blocked by objects (rugs, curtains or furniture). · Check the filter. If it is dirty, clean or replace it. 28 · Listen for any unusual noise(s), other than normal operating noise, that might be coming from the outdoor unit. If you hear unusual noise(s) coming from the unit, call a qualified servicer. UV COIL AND AIR PURIFIERS Clean Comfort brand UV coil purifiers also can be purchased from distributor. Maximum UV lamp diameter to be used is 1.375" to reduce the possibility of air leak. The power source must be installed external of the unit. Ensure that the wiring is routed though the access panel knockout with the grommet included. A magnetic door switch must be installed to avoid an accidental ultraviolet exposure during service. UV-C radiation hazard label must be placed on any door or access panel. Refer to UV coil purifiers product specification and installation manual for additional details. see table 14 for model and kit assignment. UV-C PART NUMBERS MODELS LAMP UC18S15-24 UCP-16013 UC18S15-24B UCP-16012 TABLE 14 UVc light conversion kit is required to install with the UVc light, for installation refer to the UVC drain pan kit installation manual IO -7023 for additional details. see table 14 for model and kit assignment. FIGURE 21 MODEL FAMILY MODEL SIZE KIT# DRIAN PAN DRIAN PAN DRIAN PAN CONDENSATE CONDENSATE MAIN SEQ SIDE SEQ EXT SEQ COLLECTOR ,FRONT COLLECTOR ,BACK 24B UVPK08 0010 0020 0050 0030 0040 36C 0010 0020 0050 0030 0040 AHVE 42C UVPK09 0010 0020 0050 0030 0040 48C 0010 0020 0050 0030 0040 48D UVPK10 0010 0020 0050 0030 0040 60D UVPK11 0010 0020 0050 0030 0040 Table 15 CONDENSATE COLLECTOR ,MIDDLE NA NA NA NA NA NA A2LACCESSORY/ZONINGCONTROLKIT When using the R32 system, if a refrigerant leak is detected, the zoning damper must be fully opened and accessories that could be a source of ignition must be turned off. The A2L Accessory / Zoning Control Kit can fully open the damper in response to the refrigerant leak detection output from the indoor unit. It also has an output to turn off accessories that could be a source of ignition, such as UV lights. For details, refer to the installation manual for the A2L Accessory / Zoning Control Kit IO-7032 and spec sheet for Kit Number / Models. 29 START-UP CHECKLIST Air Handler / Coil Model Number Serial Number ELECTRICAL Line Voltage (Measure L and N Voltage) L - N Secondary Voltage (Measure Transformer Output Voltage) R - C Blower Amps Heat Strip 1 - Amps Not Applicable Heat Strip 2 - Amps Not Applicable BLOWER EXTERNAL STATIC PRESSURE Return Air Static Pressure IN. W.C. Supply Air Static Pressure IN. W.C. Total External Static Pressure (Ignoring +/- from the reading above, add total here) IN. W.C. TEMPERATURES Return Air Temperature (Dry bulb / Wet bulb) DB °F WB °F Cooling Supply Air Temperature (Dry bulb / Wet bulb) DB °F WB °F Heating Supply Air Temperature DB °F Temperature Rise DB °F Delta T (Difference between Supply and Return Temperatures) DB °F Air Handler / Coil - (Inverter Matched) INVERTER AH / COIL ONLY Check EEV and EEV wiring is secure (no adjustment required) Additional Checks Check wire routings for any rubbing Check product for proper draining Check screw tightness on blower wheel Check factory wiring and wire connections Check product for proper clearances as noted by installation instructions °F to °C formula: (°F - 32) divided by 1.8 = °C °C to °F formula: (°C multiplied by 1.8) + 32 = °F 30 THIS PAGE INTENTIONALLY LEFT BLANK 31 CUSTOMER FEEDBACK We are very interested in all product comments. Please fill out the feedback form on one of the following links: Goodman® Brand Products: (http://www.goodmanmfg.com/about/contact-us). Amana® Brand Products: (http://www.amana-hac.com/about-us/contact-us). You can also scan the QR code on the right for the product brand you purchased to be directed to the feedback page. GOODMAN® BRAND AMANA® BRAND 19001 Kermier Rd. Waller, TX 77484 www.goodmanmfg.com -or- www.amana-hac.com © 2024-2025 Daikin Comfort Technologies Manufacturing, L.P. is a registered trademark of Maytag Corporation or its related companies and is used under license. All rights reserved. 32
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