Owner Manual

IMPORTANT NOTE: Read this manual carefully before installing or operating your new air conditioning unit. Make sure to save this manual for future reference.

Safety Precautions

Explanation of Symbols

WARNING: This symbol indicates the possibility of personnel injury or loss of life.

CAUTION: This symbol indicates the possibility of property damage or serious consequences.

General Warnings

WARNING This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety. Children should be supervised to ensure that they do not play with the appliance.

WARNING FOR PRODUCT USE

• Turn off the air conditioner and disconnect the power before performing any cleaning, installation or repairing. Failure to do so can cause electric shock.
• If an abnormal situation arises (like a burning smell), immediately turn off the unit and disconnect the power. Call your dealer for instructions to avoid electric shock, fire or injury.
• 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 flammable sprays such as hair spray, lacquer or paint near the unit. This may cause fire or combustion.
• Do not operate the air conditioner in places near or around combustible gases. Emitted gas may collect around the unit and cause explosion.
• Do not operate your air conditioner in a wet room such as a bathroom or laundry room. Too much exposure to water can cause electrical components to short circuit.
• Do not expose your body directly to cool air for a prolonged period of time.
• Do not allow children to play with the air conditioner. Children must be supervised around the unit at all times.
• If the air conditioner is used together with burners or other heating devices, thoroughly ventilate the room to avoid oxygen deficiency.
• In certain functional environments, such as kitchens, server rooms, etc., the use of specially designed air-conditioning units is highly recommended.

Electrical Warnings

• Only use the specified wire. If the wire is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.
• The product must be properly grounded at the time of installation, or electric shock may occur.
• For all electrical work, follow all local and national wiring standards, regulations, and the Installation Manual. Connect cables tightly, and clamp them securely to prevent external forces from damaging the terminal. Improper electrical connections can overheat and cause fire, and may also cause shock. All electrical connections must be made according to the Electrical Connection Diagram located on the panels of the indoor and outdoor units.
• All wiring must be properly arranged to ensure that the control board cover can close properly. If the control board cover is not closed properly, it can lead to corrosion and cause the connection points on the terminal to heat up, catch fire, or cause electric shock.
• Disconnection must be incorporated in the fixed wiring in accordance with the wiring rules.
• Do not share the electrical outlet with other appliances. Improper or insufficient power supply can cause fire or electric shock.
• If connecting power to fixed wiring, an all-pole disconnection device which has at least 3mm clearances in all poles, and have a leakage current that may exceed 10mA, the residual current device (RCD) having a rated residual operating current not exceeding 30mA, and disconnection must be incorporated in the fixed wiring in accordance with the wiring rules.

Cleaning and Maintenance Warnings

• Turn off the device and disconnect the power before cleaning. Failure to do so can cause electric shock.
• Do not clean the air conditioner with excessive amounts of water.
• Do not clean the air conditioner with combustible cleaning agents. Combustible cleaning agents can cause fire or deformation.

CAUTION

• Turn off the air conditioner and disconnect the power if you are not going to use it for a long time.
• Turn off and unplug the unit during storms.
• Make sure that water condensation can drain unhindered from the unit.
• Do not operate the air conditioner with wet hands. This may cause electric shock.
• Do not use device for any other purpose than its intended use.
• Do not climb onto or place objects on top of the outdoor unit.
• Do not allow the air conditioner to operate for long periods of time with doors or windows open, or if the humidity is very high.

WARNING FOR USING FLAMMABLE REFRIGERANTS

• Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manufacturer.
• The appliance shall be stored in a room without continuously operating ignition sources (for example: open flames, an operating gas appliance or an operating electric heater).

Refrigerant Information

• Do not pierce or burn.
• Be aware that refrigerants may not contain an odor.
• LEAK DETECTION SYSTEM installed. Unit must be powered except for service.
• For the unit with refrigerant sensor, when the refrigerant sensor detects refrigerant leakage, the indoor unit will display an error code and emit a buzzing sound, the compressor of outdoor unit will immediately stop, and the indoor fan will start running. The service life of the refrigerant sensor is 15 years. When the refrigerant sensor malfunctions, the indoor unit will display the error code “FHCC”. The refrigerant sensor can not be repaired and can only be replaced by the manufacturer. It shall only be replaced with the sensor specified by the manufacturer.

For R454B Refrigerant Charge Amount and Minimum Room Area

The machine you purchased may be one of the types in the table below. The indoor and outdoor units are designed to be used together. Please check the machine you purchased. The minimum room area of operating or storage should be as specified in the following table:

Area formula

• TAmin is the required minimum room area in ft²/m².
• Mc is the actual refrigerant charge in the system in oz/kg.
• MREL is the refrigerant releaseable charge in oz/kg.
• hinst is the height of the bottom of the appliance relative to the floor of the room after installation.

WARNING: The minimum room area or minimum room area of conditioned space is based on releasable charge and total system refrigerant charge.

Installation and Servicing

1. Installation (where refrigerant pipes are allowed)

• Any person who is involved with working on or breaking into a refrigerant circuit should hold a current valid certificate from an industry-accredited assessment authority, which authorises their competence to handle refrigerants safely in accordance with an industry recognised assessment specification.
• Maintenance and repair requiring the assistance of other skilled personnel shall be carried out under the supervision of the person competent in the use of flammable refrigerants.
• The installation of pipe-work shall be kept to a minimum.
• Pipe-work shall be protected from physical damage.
• Refrigerant pipes shall comply with national gas regulations.
• Mechanical connections shall be accessible for maintenance purposes.
• Be more careful that foreign matter (oil, water, etc.) does not enter the piping. Also, when storing the piping, securely seal the opening by pinching, taping, etc.
• Appliance shall be stored in a well-ventilated area where the room size corresponds to the room area as specified for operation.
• Joints shall be tested with detection equipment with a capability of 5 g/year of refrigerant or better, with the equipment in standstill and under operation or under a pressure of at least these standstill or operation conditions after installation. Detachable joints shall NOT be used in the indoor side of the unit (brazed, welded joint could be used).
• In cases that require mechanical ventilation, ventilation openings shall be kept clear of obstruction.

2. When a FLAMMABLE REFRIGERANT is used

The requirements for installation space of appliance and/or ventilation requirements are determined according to:

• The mass charge amount (M) used in the appliance.
• The installation location.
• The type of ventilation of the location or of the appliance.
• Piping material, pipe routing, and installation shall include protection from physical damage in operation and service, and be in compliance with national and local codes and standards, such as ASHRAE 15, IAPMO Uniform Mechanical Code, ICC International Mechanical Code, or CSA B52. All field joints shall be accessible for inspection prior to being covered or enclosed.
• 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.
• Piping in refrigeration systems shall be so designed and installed to minimize the likelihood of hydraulic shock damaging the system.
• Steel pipes and components shall be protected against corrosion with a rustproof coating before applying any insulation.
• Precautions shall be taken to avoid excessive vibration or pulsation.
• The minimum floor area of the room shall be mentioned in the form of a table or a single figure without reference to a formula.
• After completion of field piping for split systems, the field pipework shall be pressure tested with an inert gas and then vacuum tested prior to refrigerant charging, according to the following requirements:
• a. The minimum test pressure for the low side of the system shall be the low side design pressure and the minimum test pressure for the high side of the system shall be the high side design 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 design pressure.
• b. The test pressure after removal of pressure source shall be maintained for at least 1 h with no decrease of pressure indicated by the test gauge, with test gauge resolution not exceeding 5% of the test pressure.
• c. During the evacuation test, after achieving a vacuum level specified in the manual or less, the refrigeration system shall be isolated from the vacuum pump and the pressure shall not rise above 1500 microns within 10 min. The vacuum pressure level shall be specified in the manual, and shall be the lesser of 500 microns or the value required for compliance with national and local codes and standards, which may vary between residential, commercial, and industrial buildings.
• Field-made refrigerant joints indoors shall be tightness tested according to the following requirements: The test method shall have a sensitivity of 5 grams per year of refrigerant or better under a pressure of at least 0.25 times the maximum allowable pressure. No leak shall be detected.
• Any servicing shall be performed only as recommended by the manufacturer.

3. Qualification of Workers

Any maintenance, service, and repair operations must require qualification of the working personnel. Every working procedure that affects safety means shall only be carried out by competent persons that joined the training and achieved competence should be documented by a certificate. The training of these procedures is carried out by national training organizations or manufacturers that are accredited to teach the relevant national competency standards that may be set in legislation. All training shall follow the ANNEX HH requirements of UL 60335-2-40 4th Edition.

Examples for such working procedures are:

• Breaking into the refrigerating circuit.
• Opening of sealed components.
• Opening of ventilated enclosures.

Servicing Information

1. Checks to the area: Prior to beginning work on systems containing flammable refrigerants, safety checks are necessary to ensure that the risk of ignition is minimised. For repair to the refrigerating system, the following precautions shall be complied with prior to conducting work on the system.
2. Work procedure: Works shall be undertaken under a controlled procedure so as to minimise the risk of a flammable gas or vapour being present while the work is being performed.
3. General work area: All maintenance staff and others working in the local area shall be instructed on the nature of work being carried out. Work in confined spaces shall be avoided.
4. Checking for presence of refrigerant: The area shall be checked with an appropriate refrigerant detector prior to and during work, to ensure the technician is aware of potentially flammable atmospheres. Ensure that the leak detection equipment being used is suitable for use with flammable refrigerants, i.e. no sparking, adequately sealed or intrinsically safe.
5. Presence of fire extinguisher: If any hot work is to be conducted on the refrigeration equipment or any associated parts, appropriate fire extinguishing equipment shall be available to hand. Have a dry powder or CO2 fire extinguisher adjacent to the charging area.
6. No ignition sources: No person carrying out work in relation to a REFRIGERATING SYSTEM which involves exposing any pipe work shall use any sources of ignition in such a manner that it may lead to the risk of fire or explosion. All possible ignition sources, including cigarette smoking, should be kept sufficiently far away from the site of installation, repairing, removing and disposal, during which refrigerant can possibly be released to the surrounding space. Prior to work taking place, the area around the equipment is to be surveyed to make sure that there are no flammable hazards or ignition risks. "No Smoking" signs shall be displayed.
7. Ventilated area: 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 externally into the atmosphere.
8. Checks to the refrigeration equipment: Where electrical components are being changed, they shall be fit for the purpose and to the correct specification. At all times the manufacturer's maintenance and service guidelines shall be followed. If in doubt consult the manufacturer's technical department for assistance. The following checks shall be applied to installations using FLAMMABLE REFRIGERANTS:
   • The actual refrigerant charge is in accordance with the room size within which the refrigerant containing parts are installed.
   • The ventilation machinery and outlets are operating adequately and are not obstructed.
   • If an indirect refrigerating circuit is being used, the secondary circuits shall be checked for the presence of refrigerant.
   • Marking to the equipment continues to be visible and legible; marking and signs that are illegible shall be corrected.
   • Refrigeration pipe or components are installed in a position where they are unlikely to be exposed to any substance which may corrode refrigerant containing components, unless the components are constructed of materials which are inherently resistant to being corroded or are suitably protected against being so corroded.
9. Checks to electrical devices: Repair and maintenance to electrical components shall include initial safety checks and component inspection procedures. If a fault exists that could compromise safety, then no electrical supply shall be connected to the circuit until it is satisfactorily dealt with. If the fault cannot be corrected immediately but it is necessary to continue operation, an adequate temporary solution shall be used. This shall be reported to the owner of the equipment so all parties are advised. Initial safety checks shall include:
   • Capacitors are discharged: this shall be done in a safe manner to avoid possibility of sparking.
   • There are no live electrical components and wiring exposed while charging, recovering, or purging the system.
   • There is continuity of earth bonding.
10. Sealed electrical components shall be replaced if it's damage
11. Intrinsically safe components must be replaced if it's damage

Refrigerant Handling Procedures

12. Cabling

Check that cabling will not be subject to wear, corrosion, excessive pressure, vibration, sharp edges, or any other adverse environmental effects. The check shall also take into account the effects of aging or continual vibration from sources such as compressors or fans.

13. Detection of Flammable Refrigerants

Under no circumstances shall potential sources of ignition be used in the searching for or detection of refrigerant leaks. A halide torch (or any other detector using a naked flame) shall not be used.

The following leak detection methods are deemed acceptable for refrigerant systems. Electronic leak detectors may be used to detect refrigerant leaks but, in the case of FLAMMABLE REFRIGERANTS, the sensitivity may not be adequate, or may need re-calibration. (Detection equipment shall be calibrated in a refrigerant-free area.) Ensure that the detector is not a potential source of ignition and is suitable for the refrigerant used. Leak detection equipment shall be set at a percentage of the LFL of the refrigerant and shall be calibrated to the refrigerant employed, and the appropriate percentage of gas (25% maximum) is confirmed.

Leak detection fluids are also suitable for use with most refrigerants, but the use of detergents containing chlorine shall be avoided as the chlorine may react with the refrigerant and corrode the copper pipe-work.

NOTE Examples of leak detection fluids are:

• Bubble method.
• Fluorescent method agents.

If a leak is suspected, all naked flames shall be removed/extinguished. If a leakage of refrigerant is found which requires brazing, all of the refrigerant shall be recovered from the system, or isolated (by means of shut-off valves) in a part of the system remote from the leak. See the following instructions of removal of refrigerant.

14. Removal and Evacuation

When breaking into the refrigerant circuit to make repairs - or for any other purpose, conventional procedures shall be used. However, for flammable refrigerants, it is important that best practice be followed, since flammability is a consideration.

The following procedure shall be adhered to:

• Safely remove refrigerant following local and national regulations.
• Evacuate.
• Purge the circuit with inert gas (optional for A2L).
• Evacuate (optional for A2L).
• Continuously flush or purge with inert gas when using flame to open circuit; and
• Open the circuit.

The refrigerant charge shall be recovered into the correct recovery cylinders if venting is not allowed by local and national codes. For appliances containing flammable refrigerants, the system shall be purged with oxygen-free nitrogen to render the appliance safe for flammable refrigerants. This process might need to be repeated several times. Compressed air or oxygen shall not be used for purging refrigerant systems.

For appliances containing flammable refrigerants, refrigerants purging shall be achieved by breaking the vacuum in the system with oxygen-free nitrogen and continuing to fill until the working pressure is achieved, then venting to atmosphere, and finally pulling down to a vacuum (optional for A2L). This process shall be repeated until no refrigerant is within the system (optional for A2L). When the final oxygen-free nitrogen charge is used, the system shall be vented down to atmospheric pressure to enable work to take place. The outlet for the vacuum pump shall not be close to any potential ignition sources, and ventilation shall be available.

Charging, Decommissioning, and Labeling

15. Charging Procedures

In addition to conventional charging procedures, the following requirements shall be followed:

• Works shall be undertaken with appropriate tools only (In case of uncertainty, please consult the manufacturer of the tools for use with flammable refrigerants).
• Ensure that contamination of different refrigerants does not occur when using charging equipment. Hoses or lines shall be as short as possible to minimize the amount of refrigerant contained in them.
• Cylinders shall be kept upright.
• Ensure that the refrigeration system is earthed prior to charging the system with refrigerant.
• Label the system when charging is complete (if not already).
• Extreme care shall be taken not to overfill the refrigeration system.
• Prior to recharging the system, it shall be pressure tested with oxygen-free nitrogen (OFN). The system shall be leak tested on completion of charging but prior to commissioning. A follow-up leak test shall be carried out prior to leaving the site.

16. Decommissioning

Before carrying out this procedure, it is essential that the technician is completely familiar with the equipment and all its detail. It is recommended good practice that all refrigerants are recovered safely. Prior to the task being carried out, an oil and refrigerant sample shall be taken in case analysis is required prior to re-use of recovered refrigerant. It is essential that electrical power is available before the task is commenced.

• a) Become familiar with the equipment and its operation.
• b) Isolate system electrically.
• c) Before attempting the procedure, ensure that:
  • Mechanical handling equipment is available, if required, for handling refrigerant cylinders.
  • All personal protective equipment is available and being used correctly.
  • The recovery process is supervised at all times by a competent person.
  • Recovery equipment and cylinders conform to the appropriate standards.
• d) Pump down refrigerant system, if possible.
• e) If a vacuum is not possible, make a manifold so that refrigerant can be removed from various parts of the system.
• f) Make sure that the cylinder is situated on the scales before recovery takes place.
• g) Start the recovery machine and operate in accordance with instructions.
• h) Do not overfill cylinders (no more than 80% volume liquid charge).
• i) Do not exceed the maximum working pressure of the cylinder, even temporarily.
• j) When the cylinders have been filled correctly and the process completed, make sure that the cylinders and the equipment are removed from site promptly and all isolation valves on the equipment are closed off.
• k) Recovered refrigerant shall not be charged into another refrigeration system unless it has been cleaned and checked.

17. Labelling

Equipment shall be labelled stating that it has been de-commissioned and emptied of refrigerant. The label shall be dated and signed. For appliances containing FLAMMABLE REFRIGERANTS, ensure that there are labels on the equipment stating the equipment contains FLAMMABLE REFRIGERANT.

18. Recovery

When removing refrigerant from a system, either for servicing or decommissioning, it is recommended good practice that all refrigerants are removed safely. When transferring refrigerant into cylinders, ensure that only appropriate refrigerant recovery cylinders are employed. Ensure that the correct number of cylinders for holding the total system charge is available. All cylinders to be used are designated for the recovered refrigerant and labelled for that refrigerant (i.e., special cylinders for the recovery of refrigerant). Cylinders shall be complete with pressure-relief valve and associated shut-off valves in good working order. Empty recovery cylinders are evacuated and, if possible, cooled before recovery occurs.

The recovery equipment shall be in good working order with a set of instructions concerning the equipment that is at hand and shall be suitable for the recovery of the flammable refrigerant. If in doubt, the manufacturer should be consulted. In addition, a set of calibrated weighing scales shall be available and in good working order. Hoses shall be complete with leak-free disconnect couplings and in good condition.

The recovered refrigerant shall be processed according to local legislation in the correct recovery cylinder, and the relevant waste transfer note arranged. Do not mix refrigerants in recovery units and especially not in cylinders.

If compressors or compressor oils are to be removed, ensure that they have been evacuated to an acceptable level to make certain that flammable refrigerant does not remain within the lubricant. The compressor body shall not be heated by an open flame or other ignition sources to accelerate this process. When oil is drained from a system, it shall be carried out safely.

Transportation, Marking, and Storage

19. Transportation, Marking and Storage for Units

1. Transport of equipment containing flammable refrigerants: Compliance with the transport regulations.
2. Marking of equipment using signs: Compliance with local regulations.
3. Disposal of equipment using flammable refrigerants: Compliance with national regulations.
4. Storage of equipment/appliances: The storage of equipment should be in accordance with the manufacturer's instructions.
5. Storage of packed (unsold) equipment: Storage package protection should be constructed such that mechanical damage to the equipment inside the package will not cause a leak of the refrigerant charge. The maximum number of pieces of equipment permitted to be stored together will be determined by local regulations.

Explanation of Symbols Displayed on the Indoor Unit or Outdoor Unit

Indoor Unit Parts and Major Functions

1.1 UNIT PARTS

[Air Outlet] [Air Inlet]

1.2 OPERATING CONDITIONS

Use the system under the following temperatures for safe and effective operation. If the air conditioner is used under different conditions, it may malfunction or become less efficient.

INVERTER SPLIT TYPE

FOR OUTDOOR UNITS WITH AUXILIARY ELECTRIC HEATER

When outside temperature is below 0°C (32°F), we strongly recommend keeping the outdoor unit powered at all times to prevent damage to equipment.

NOTICE

Room relative humidity less than 80%. If the air conditioner operates in excess of this figure, the surface of the air conditioner may attract condensation.

Optimizing Performance and Energy Saving

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.

1.3 FEATURES

Refrigerant Leak Detection System

In the event of a refrigerant leak, the LCD screen will display "ELOC" or "EHC1" or "EHC2" and the LED indicator light will flash. The default temperature of the first power-on is set to 60 °F for refrigeration and 86 °F for heating. When the temperature stops, the temperature is set at the room temperature at that time.

NOTICE

• Under normal working conditions, the switch, wind speed, and temperature cannot be adjusted by remote control.
• Requirements of wire controller: Control AUX function for live heating.

1.4 ENERGY SAVING TIPS

• DO NOT set the unit to excessive temperature levels.
• While cooling, close the curtains to avoid direct sunlight.
• Doors and windows should be kept closed to keep cool or warm air in the room.
• DO NOT place objects near the air inlet and outlet of the unit.
• Replace the air filter every 30 to 90 days depending on thickness and MERV.

Closing curtains during heating also helps keep the heat in

Doors and windows should be kept closed

Care and Maintenance

CLEANING YOUR INDOOR UNIT

BEFORE CLEANING OR MAINTENANCE

• Always turn off your air conditioner system and disconnect its power supply before cleaning or maintenance.
• Contact an authorized service technician for repair or maintenance. Improper repair and maintenance may cause water leakage, electrical shock, or fire, and may void your warranty.
• Do not substitute a blown fuse with a higher or lower amperage rating fuse, as this may cause circuit damage or an electrical fire. Replacement Fuse must be identical to one removed.
• Make sure the drain hose is set up according to the instructions. Failure to do so could cause leakage and result in personal property damage, fire, and electric shock.
• Make sure that all wires are connected properly. Failure to connect wires according to instructions can result in electrical shock or fire.

CAUTION FOR ALL PIPES INSTALLATION

• Only use a soft, dry cloth to wipe the unit clean. If the unit is especially dirty, you can use a cloth soaked in warm water to wipe it clean.
• Do not use chemicals or chemically treated cloths to clean the unit.
• Do not use benzene, paint thinner, polishing powder, or other solvents to clean the unit. They can cause the plastic surface to crack or deform. Use of volatile cleaners may cause fire, resulting in injury or death.
• Do not use water hotter than 40°C (104°F) to clean the front panel. This can cause the panel to deform or become discolored.
• Do not wash the unit under running water. Doing so creates an electrical hazard.
• Clean the unit using a damp, lint-free cloth and neutral detergent. Dry the unit with a dry, lint-free cloth.

NOTICE

Inspect and clean or replace air filter each month or as required.

Maintenance Your AC

Maintenance - Long Periods of Non-Use

If you plan not to use your air conditioner for an extended period of time, do the following:

• Clean all filters
• Turn on FAN function until unit dries out completely

Maintenance - Pre-Season Inspection

After long periods of non-use, or before periods of frequent use, do the following:

• Check for damaged wires
• Check for leaks
• Make sure nothing is blocking all air inlets and outlets
• Clean all filters

Troubleshooting

SAFETY PRECAUTIONS

If any of the following conditions occurs, turn off your unit immediately!

• You smell a burning odor.
• 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 AN AUTHORIZED SERVICE PROVIDER IMMEDIATELY!

Common Issues

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

NOTICE

If problem persists, contact a local dealer. Provide them with a detailed description of the unit malfunction as well as your model number.

Troubleshooting

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

The design and specifications are subject to change without prior notice for product improvement. Consult with the sales agency or manufacturer for details. Any updates to the manual will be uploaded to the service website, please check for the latest version.