ActronAir URC-100DS, CRE-100DS Cascade DS Series Four Way Cassette Owner’s Manual

ActronAir URC-100DS, CRE-100DS Cascade DS Series Four Way Cassette

IMPORTANT NOTE:
This unit is designed for use with R-32 refrigerant only.
Please read the R-32 Safety Manual and this manual carefully before installing or operating your air conditioning unit.
Information in this manual is to be used in conjunction with the R-32 Safety Manual.
Make sure to save this manual for future reference.

This manual is a controlled document which contains confidential and proprietary information.
Distribution, modification, copying and/or reproduction are prohibited without written consent from ActronAir Product design and specifications are subject to change without prior notice for product improvement.

Drawings are for illustration purposes only and may vary depending on the model purchased.

General Information
CONGRATULATIONS on your purchase of an ActronAir air conditioning unit! This unit has been designed and engineered to provide optimum air conditioning and to achieve maximum energy efficiency.

Your air conditioning system has been manufactured from the highest quality materials. Numerous “in house” and “external” inspections and test procedures were conducted to your air conditioning unit to ensure satisfactory operation.
This guide provides operation instructions specific to your split indoor unit. Read this manual thoroughly to ensure safe operation of your air conditioning system.

Safety Instructions

• Only licensed HVAC technicians* should service this air conditioning equipment. Improper service or alteration by an unqualified technician could result in significant and major damage to the product or property which may render your warranty null and void. Such unqualified service could also lead to severe physical injury or death. Follow all safety instructions in this literature and all warning labels that are attached to the equipment.
• Prevailing WH&S regulations must be observed and will take precedence to the safety instructions contained on this manual. Safe work practices and environment must be the paramount importance in the performance of all the service procedures.
• This appliance is not intended for use by young children or infirm persons unless they have been adequately supervised by a responsible person to ensure that they can use the appliance safely. Young children should be supervised to ensure that they do not play with the appliance.
• Qualifications required will be appropriate Electrical, Refrigeration and Refrigerant Handling License and Training dependent on local State/Territory regulations.

DANGER Hazardous Voltage – Risk of Electrocution.
Turn Off the power from main isolator before proceeding with any service and maintenance work of the unit. Observe proper LOCK-OUT/TAG-OUT (LOTO) procedures for electrical appliances in order to prevent accidental switching-on of the power supply. Extreme care and caution must be observed should there be a need to work on live circuit.

WARNING

• If any abnormal situation arises (like burning smell), turn of the power supply and call your HVAC technician for instructions to avoid electric shock, fire or injury.
• DO NOT let the indoor unit or the controller get wet. It may cause electric shock or fire.
• DO NOT insert fingers, rods or other objects into the air inlet or outlet. This may cause injury, since the fan may be rotating at high speeds.
• DO NOT use a flammable spray such as hair spray, lacquer or paint near the unit. This may cause fire or combustion.

CAUTION

• DO NOT inspect the unit by yourself. Ask a qualified HVAC technician to perform the inspection.
• To prevent product deterioration, do not use the air conditioner for preservation purposes (storage of food, plants, animals, works of art, etc.).
• DO NOT touch the evaporator coils inside the indoor unit. The evaporator coils are sharp and may cause injury.
• DO NOT place items that might be affected by moisture damage under the indoor unit. Condensation can occur at a relative humidity of 80%.
• DO NOT expose heat-producing appliances to cold air or place them under the indoor unit. This may cause incomplete combustion or deformation of the unit due to the heat.
• If the air conditioner is used together with other heating devices, thoroughly ventilate the room to avoid oxygen deficiency.
• DO NOT climb onto or place objects on top of the outdoor unit.
• DO NOT operate the air conditioner when using fumigant insecticides. The chemicals may become layered with the unit and endanger those who are hypersensitive to chemicals.
• DO NOT let children play with the air conditioner.
• DO NOT attempt to manually adjust or bend louvre blades. Doing so may damage louvre blades, or if pushed closed may cause excess condensation resulting in the failure of the air conditioning.

DANGER
DO NOT operate the air conditioner in a wet room (e.g. bathroom or laundry room) nor with wet hands. This can cause electrical shock and cause the product to deteriorate.

WARNING

• This air-conditioning unit contains R-32 refrigerant (CLASS A2L) which is mildly flammable.
• To prevent the risk of fire or explosion from refrigerant leakage, the following safety requirements apply when the appliance is installed in an unventilated area:
• The installation area must be constructed to ensure that any leaked refrigerant does not stagnate and create a fire or explosion hazard.
• The appliance must be stored in a room that meets the minimum area requirement specified for operation.
• The appliance must not be stored in a room with continuously operating open flames (e.g., gas appliances) or other ignition sources (e.g., electric heaters, hot surfaces).
• For Appliances Connected via Air Duct Systems:
• If installed in a room smaller than Amin (as determined in Clause GG.2 of AS/NZS 60335.2.40), that room must not contain continuously operating open flames or other ignition sources (e.g., electric heaters, hot surfaces).
• A flame-producing device may only be installed if fitted with an effective flame arrestor.
• Auxiliary devices that can act as ignition sources must not be installed in ductwork. Examples include, but not limited to:
  Hot surfaces exceeding X °C
  Electric switching devices
  Note: X is the maximum allowable surface temperature defined in Clause 22.117 of AS/NZS 60335.2.40.

NOTE

• Service, maintenance, repairs and decommissioning of this unit must be performed by a licensed HVAC technician; qualified to handle R-32 refrigerant.
• R-32 refrigerant is odourless, if the refrigerant gas comes into contact with fire, it may emit a poisonous gas.

Unit Parts

Operating Conditions

Operating Temperature
Optimal performance for the COOL, HEAT, and DRY modes can be achieved in the following temperature ranges. When your air conditioner is used outside of these ranges, certain safety protection features will activate and cause the unit to perform less than optimally.

NOTE
Room relative humidity should be less than 80%. If the air conditioner operates in room with relative humidity greater than 80%, the surface of the air conditioner may attract condensation. To avoid condenstion on louvers, please set the vertical air flow louvre to its maximum angle and set HIGH fan mode.

Optimal Operation
To achieve optimal performance, please note the following:

• Adjust the direction of the air flow so that it is not blowing directly onto people.
• Adjust the temperature to achieve the highest possible level of comfort. DO NOT adjust the unit to excessive temperature levels.
• While cooling, close the blinds or curtains to avoid direct sunlight.
• Doors and windows should be kept closed to keep cool or warm air in the room.
• Set an ON/OFF TIMER and use SLEEP/ECONOMY feature.
• Do not place any object near the air inlet or air outlet, as the efficiency of the air conditioner may be reduced and the air conditioner may stop running.
• When a remote control is used, remove the batteries if you don’t plan to use the unit for a long time.
• Clean the air filter periodically, otherwise cooling or heating performance may be reduced.

To further optimize the performance of your unit, do the following:

• Keep doors and windows closed.
• Limit energy usage by using TIMER ON and TIMER OFF functions.
• Do not block air inlets or outlets.
• Regularly inspect and clean air filters.

Features

Compressor Protection
The compressor cannot restart for 3 minutes after it stops.

Hot Start

• The unit is designed to minimise cold air during HEAT mode, when the indoor heat exchanger is in one of the following conditions and the set temperature has not been reached.
• When heating has just started.
• When the system is in defrost.
• Low temperature heating.

Defrosting 

• Frosting may occur on the outdoor unit during a heat cycle when outdoor temperature is low and humidity is high resulting in lower heating efficiency.
• Under these conditions, the air conditioner will stop heating operations and start defrosting automatically.
• The defrost period may vary from 4 to 10 minutes, depending on the outdoor temperature and the amount of frost buildup on the outdoor unit.
• The indoor and outdoor fan stop running when the system is in defrost.

Auto-Restart
The system has an auto restart function. If a power failure occurs, the system will immediately stop. When power returns, the unit will restart automatically in its last programmed setting once power is resotered.

Louvre Angle Memory Function
When the unit restarts after a power failure, the angle of the horizontal louvres will automatically return to the previous position. The angle of the horizontal louvre should not be set to small opening (or near close possition) as condensation may form and drip from the machine.

NOTE
Lightning or any electronic interference nearby may cause the unit to malfunction. If this happens, reset the power mains (isolator). Press the ON/OFF button on the wired controller to restart operation.

Optimal Operation
To achieve optimal performance, please note the following:

• Adjust the direction of the air flow so that it is not blowing directly onto people.
• Adjust the temperature to achieve the highest possible level of comfort. DO NOT adjust the unit to excessive temperature levels.
• While cooling, close the blinds or curtains to avoid direct sunlight.
• Doors and windows should be kept closed to keep cool or warm air in the room.
• Set an ON/OFF TIMER and use SLEEP/ECONOMY feature.
• Do not place any object near the air inlet or air outlet, as the efficiency of the air conditioner may be reduced and the air conditioner may stop running.
• When a remote control is used, remove the batteries if you don’t plan to use the unit for a long time.
• Clean the air filter periodically, otherwise cooling or heating performance may be reduced.

Care and Maintenance

NOTES
Apart from Cleaning the Air Filter, all other general maintenance and care of systems should be undertaken by a licensed technician.
Service, maintenance, repairs and decommissioning of this unit must be performed by a licensed HVAC technician; qualified to handle R-32 refrigerant.

Maintenance Procedures
This section describes the procedures that must be performed as a part of normal maintenance program. Regular servicing of equipment by a licensed technician is highly recommended. Regular servicing of your unit helps in maintaining its optimum performance and reliability. The checklist and service periods provided in this manual are guides only, as some sites may require more frequent servicing. Always disconnect electrical power to the unit before performing these procedures. It is always a safe practice to observe all safety warnings and cautions when conducting maintenance tasks.

WARNING Hazardous Voltage!
Always make sure that all power supply, including remote controls, are disconnected before performing maintenance. Observe proper LOCK-OUT/TAG-OUT procedures to ensure that power cannot be inadvertently energised. Failure to disconnect power before maintenance procedures can result in serious injury and/or death.

DANGER

Live Electrical Connections!
It may be necessary to work with live electrical components on certain maintenance tasks. Only licensed electricians and qualified technicians are allowed to perform these tasks.

Beware of Rotating Fan Blades!
Always make sure that all power supply, to the Outdoor Fans are turn Off and isolated.
Observe WH&S safety procedures, do not wear loose clothing and any jewellery when working near the fans.
Wear PPE whenever performing any maintenance procedures.
Observe all necessary procedures when working in a confined space.

Annual Maintenance Checklists

• Perform general maintenance inspections.
• Perform scheduled start-up checks.
• Leak test refrigerant circuits.
• Inspect contacts of all contactors and relays. Replace all worn contacts as required.
• Inspect, clean and tighten all electrical connections.
• Check fans for balanced operation. Make sure that there are no loose screws / bolts, no fan blades interference and no damage to the fans and guards.
• Inspect the air filters, clean or replace as required.
• Clean and repaint any corroded panel section.
• Ensure no blockage of airflow through variable speed drive.

Cleaning the Condenser Coils
Clean the coils at least once a year or more frequently if unit is located in a dusty and dirty environment, in order to maintain your system’s proper operating performance. High discharge pressures are good indication that the coils need cleaning. When using detergent or solvents to clean the coils, follow the manufacturer’s instructions to avoid potential damage to the coils and to the unit.

To clean the refrigerant coils, use a soft brush and water spray, such as garden hose or pressure washer with low pressure nozzle.

WARNING

Do Not Use High Alkaline Detergent!
When using detergent for coil cleaning, ensure that the alkaline level is no higher than 8.5, which can cause corrosion damage to the coils.

No Water into the Electrical Compartments!
Ensure consideration is given to the possibility of water entering the electrical compartments during cleaning of the condenser coil.

How To Clean Air Filter
The filter prevents dust and other particles from entering the indoor unit. Dust build up can reduce the efficiency of the air conditioner. For optimum efficiency, clean the air filter regularly or more frequently if unit is installed in a dusty area.

WARNING

1. Ensure the unit is OFF before checking or cleaning the air filter.
2. To avoid injury, ensure that the blower fan comes to a complete stop before removing the air filter.
3. Air inlet frame may swing down when unlocked. Ensure to guide the air inlet frame to complete open position (do not let it swing freely).

Step 1. Unlock the grille by pushing the two tabs towards the middle simultaneously. 

Step 2. Remove the filter from the grille.
(Be mindful of the cable from the control box on the main body to the display panel.)

• Step 3. Remove the air filter.
• Step 4. Clean the air filter by vacuuming the surface or washing it with warm and mild detergent.
• Step 5. Rinse the filter with clean water and allow it to air-dry. DO NOT let the filter dry in direct sunlight.
• Step 6. Reinstall the filter.
• Step 7. Ensure the cable from the display panel to the control box is not loose and not obstructing the grill. Step 8. Lock the grille by sliding the two tabs outwards simulataneously.

Preparation For Periods of Non-Use
If you plan to not use your air conditioner for an extended period of time, do the following:

• Run the appliance on FAN mode for 12 hours in a warm room to dry all its components. Presence of moisture for a long period of time may lead to mold formation.
• Turn off the appliance and turn off power via the main power isolator.
• Clean the air filter according to the instructions in the previous section. Reinstall the clean, dry filter before storing.
• Remove the batteries from the remote control (if remote control is used).

Maintenance – Pre-Season Inspection
After long periods of non-use, or before periods of frequent use, do the following:

• Use a dry cloth to wipe off the dust accumulated on the rear air intake grille in order to avoid the dust being dispersed from the indoor unit.
• Check that the air filter is installed.
• Check if the air outlet or inlet is blocked after the air conditioner has not been used for a long time.
• Turn on the main power isolator at least 12 hours prior to operating the unit.

CAUTION

• Any unit repairs, maintenance and cleaning of outdoor unit should be performed by qualified HVAC technician.
• Filter cleaning can and should be regularly performed by product owner as required.

WARNING

• If the refrigerant leaks, turn off the air conditioner and any combustible heating devices, ventilate the room and call your HVAC technician immediately. Refrigerant can be toxic. DO NOT use the air conditioner until the leak is repaired.
• When the air conditioner is installed in a small room, measures must be taken to prevent the refrigerant concentration from exceeding the safety limit in the event of refrigerant leakage. Concentrated refrigerant causes a severe health and safety threat.

Troubleshooting

SAFETY PRECAUTIONS
If ANY of the following conditions occurs, turn off your unit immediately!

• Any cables are damaged or abnormally warm
• You smell a burning odour
• The unit emits loud or abnormal sounds
• A power fuse blows or the circuit breaker frequently trips
• Water or other objects fall into or out of the unit
  DO NOT ATTEMPT TO FIX THESE YOURSELF! CONTACT AUTHORISED SERVICE PROVIDER IMMEDIATELY!

The following problems are not a malfunction and in most situations will not require repairs.

When troubles occur, please check the following points before contacting a HVAC service repair company.

NOTE
If your problem persists after performing the checks and diagnostics above, turn off your unit immediately and contact ActronAir on 1800 119 229 for technical support or warranty.

Display / Error Codes

When issues occur, please check the following points before contacting a qualified service technician.
Normal Display (not error code)

Error Codes 

Maintenance

Maintenance Procedures
This section de describes the procedures that must be performed as a part of normal maintenance program. Regular servicing of equipment by licensed HVAC technician is highly recommended. Always disconnect electrical power to the unit before performing these procedures. It is always a safe practice to observe all safety warnings and cautions when conducting maintenance tasks.

DANGER Live Electrical Connections!
It may be necessary to work with live electrical components on certain maintenance tasks. Only licensed electricians and qualified technicians are allowed to perform these tasks.

WARNING Hazardous Voltage !
Always make sure that all power supply, including remote controls, are disconnected before performing maintenance.
Observe proper LOCK-OUT / TAG-OUT (LOTO) procedures to ensure that power cannot be inadvertently energised. Failure to disconnect power before maintenance procedures can result in serious injury and/or death.

Annual Maintenance Checklists

• Perform general maintenance inspections.
• Perform scheduled start-up checks.
• Leak test refrigerant circuits.
• Inspect contacts of all contactors and relays. Replace all worn contacts as required.
• Inspect, clean and tighten all electrical connections.
• Check fans for balanced operation. Make sure that there are no loose screws / bolts, no fan blades interference and no damage to the fans and guards.
• Inspect the air filters, clean or replace as required.
• Clean and repaint any corroded panel section.
• Ensure no blockage of airflow through variable speed drive and drive fan is operating correctly.

Cleaning the Condenser Coils
Clean the coils at least once a year or more frequently if unit is located in a dusty and dirty environment, in order to maintain your system’s proper operating performance. High discharge pressures are good indication that the coils need cleaning. When using detergent or solvents to clean the coils, follow the manufacturer’s instructions to avoid potential damage to the coils and to the unit.

To clean the refrigerant coils, use a soft brush and water spray, such as garden hose or pressure washer with low pressure nozzle.

DANGER Beware of Rotating Fan Blades 

• Always make sure that all power supply, to the Outdoor Fans are turned-off and isolated.
• Observe WH&S safety procedures, do not wear loose clothing and any jewellery when working near the fans.
• Wear PPE whenever performing any maintenance procedures.
• Observe all necessary procedures when working on a confined space.

CAUTION Do Not Use High Alkaline Detergent 
When using detergent for coil cleaning, ensure that the alkaline level is no higher than 8.5, which can cause corrosion damage to the coils.

Coil Cleaning Procedures

• Disconnect power to the unit.
• Remove the louvered panels from the unit to gain access to the air inlet side of the coils.
• Use a soft brush to remove loose dirt and debris from both sides of the coils.
• Straighten bent coil fins with fin comb.
• Prepare the detergent solutions according to the manufacturer’s instructions.
• Spray solution at a 90o angle to the coils, keeping a minimum nozzle spray angle of 15o, with at least a 1800mm distance from the coils and 600 psi pressure.
• Spray leaving air side of the coils first then the air inlet side. Allow the solution to stand on the coils for five minutes.
• Rinse both sides of the coils with cool clean water.
• Inspect the coils, if they are still dirty, repeat the cleaning procedure.
• Clean and wipe dry the outer and inner sides of the unit, the refrigerating parts and other components.
• Ensure that the condensate drain lines are not blocked.
• Reinstall all unit panels, covers and guards.
• Restore electrical power to the unit.

Maintenance Frequency Checklist

Regular servicing of equipment by a qualified technician is recommended every 12 months for residential applications and every quarter for commercial applications. Regular servicing of your unit helps in maintaining its optimum performance and reliability. The following checklist and service periods are provided as a guide only, as some sites may require more frequent servicing.

Electrical
Parts	Service Frequency				Detail of Service Check	Service Methods
	1 Mth	3 Mth	6 Mth	1 Yr
Printed Circuit Boards					Visual Inspection.	Tighten Terminals as necessary on printed circuit boards.
Electrical Connections					Check all electrical terminals, mains, communications, etc.	Re-tighten if loose.
Magnetic Contactor					Check for loose terminal connections.	Tighten electrical terminals. Remove any dust.

Indoor Unit
Parts	Service Frequency				Detail of Service Check	Service Methods
	1 Mth	3 Mth	6 Mth	1 Yr
Casing/ Panels and Frames					Visual check for damage, rust and dust accumulation.	For highly corrosive environment, wash panels quarterly with water and neutral detergent solution. Wax panels. Repair / re-paint where required.
Insulation					Visual check for insulation conditions.	Repair / replace insulation material.
Fan					Visual check for run out of balance and dust attached.	Clean off dust as necessary to negate possibility of fan running out of balance.
Motor				Ω	Visual check on wiring. Insulation resistance check to be carried out annually.	Measure insulation resistance to earth with Megger. Insulation resistance should be more than 1M0.
Heat Exchanger					Check for clogging by dust. Check for leaks / damage.	Clean air inlet side as necessary. Straighten any bent fins using fins comb.
Drain Pan/ Condensation line					Check for obstructions and free flow of water.	Clean to eliminate obstructions/ sludge and check condition of pan. Pour water to ensure free flow.
Filter*					Check for clogging by dust.	Clean / Replace Filter.
Temperature Readings					Measure air on and air off.	Place temperature probe in return and supply air of unit. Be careful not to touch the fan blower whilst checking temperature with thermometer.

Outdoor Unit
Parts	Service Frequency				Detail of Service Check	Service Methods
	1 Mth	3 Mth	6 Mth	1 Yr
Casing/ Panels and Frames					Visual check for damage, rust and dust accumulation.	For highly corrosive environment, wash panels quarterly with water and neutral detergent solution. Wax panels. Repair / re-paint where required.
Insulation					Visual check for insulation conditions.	Repair / replace insulation material.
Fan					Visual check for run out of balance and dust accumulation.	Clean off dust as necessary to negate possibility of fan running out of balance.
Motor				Ω	Visual check on wiring. Insulation resistance check to be carried out annually.	Measure insulation resistance. Should be more than 1M0.
Heat Exchanger					Check for clogging by dust. Check for leaks / damage.	Clean air inlet side as necessary. Straighten any bent fins using fins comb.
Condensate Drain Line (if available)					Check for obstructions & free flow of water.	Clean to eliminate obstructions/ sludge and check condition of drain line. Pour water to ensure free flow.
Compressor				Ω	Check for high / low pressure. Measure insulation resistance. Check compressor for abnormal noise/vibrations.	Measure insulation resistance. Should be more than 1M0. Ensure to isolate first the VSD from the compressor before measuring insulation resistance.
Compressor drive					For variable drive compressor check full operation of drive from minimum hertz to maximum, check fan operation of drive.	Check compressor amperage & running frequency feedback from outdoor board seven segment display.
					Ensure drive fresh air path is clear and drive fan is operating correctly.	Check ventilation holes on top and bottom of drive cover are clear of leaves, pebbles or dirt.
Refrigeration Operational Readings					Make note of operational reading in test cool/heat mode.	Check operating pressures, record super heat and sub-cool values.
Safety Devices					Check calibration of safety devices.	Check resistance of sensors, pressure cut in / cut out of pressure controls.
Faults					Check for any previous fault history on unit.	Investigate any causes for previous faults, reset fault history.