Cover SERVICE MANUAL AWI/AWO-20HPR1 Gamma AWI/AWO-26HPR1 Gamma AWI/AWO-35HPR1 Gamma AWI/AWO-54HPR1 Gamma AWI/AWO-71HPR1 Gamma
Content Content SERVICE MANUAL .......................................................................................................................................... 1 2 1. Precaution ............................................................................................................................................... 2 1.1 Safety Precaution ....................................................................................................................................
Content 9. Model and Parameters .......................................................................................................................... 24 10. Troubleshooting .................................................................................................................................. 25 10.1 Display board ...................................................................................................................................... 25 10.
Service manual 1. Precaution 1.1 Safety Precaution l To prevent injury to the user or other people and property damage, the following instructions must be followed. l Incorrect operation due to ignoring instruction will cause harm or damage. l Before service unit, be sure to read this service manual at first. 1.2 Warning Ø Installation l Do not use a defective or underrated circuit breaker. Use this appliance on a dedicated circuit. There is risk of fire or electric shock.
Service manual operation. (Do not touch the electrostatic filter, if the unit is so equipped.) There is risk of physical injury, electric shock, or product failure. l When the product is soaked (flooded or submerged), contact an Authorized service center. There is risk of fire or electric shock. l Be caution that water could not enter the product. There is risk of fire, electric shock, or product damage. l Ventilate the product from time to time when operating it together with a stove, etc.
Service manual 2. Function Indoor unit Operation ON/OFF by remote controller Sensing by room temperature Room temperature sensor. Pipe temperature sensor. Room temperature control Maintain the room temperature in accordance with the setting temperature. Starting temperature control Indoor fan is delayed for 5 sec at the starting. Time Delay Safety control Restarting is for approx. 3 minutes.. Indoor fan speed control high, med, low, breeze.
Service manual Outdoor unit Power relay control The unit has 3 mins delay between continuously ON/OFF operations. Low noise air flow system Bird tail propeller fan makes the outdoor unit run more quietly. Hydrophilic aluminum fin The hydrophilic fin can improve the heating efficiency at operation mode. 4 way valve control It is only operated in the heating operation mode except defrosting operation.
Service manual 3. Dimension 3.1 Indoor unit Dimension W H D 20 790 275 190 26 790 275 190 35 790 275 190 54 940 275 198 Mode 3.
Service manual 4.
Service manual 5. Operation limits 5.1 Cooling operation Outdoor unit air temp.℃ DB Indoor air temp. ℃ DB Note: The chart is the result from the continuous operation under constant air temperature conditions. However, excludes the initial pull-down stage. 5.2 Heating operation Indoor air temp. ℃ DB Outdoor unit air temp.℃ DB Note: The chart is the result from the continuous operation under constant air temperature conditions. However, excludes the initial pull-down stage. 6.
Service manual AWI/O-20HPR1, AWI/O-26HPR1, AWI/O-35HPR1, AWI/O-54HPR1 Indoor： Outdoor： 8
Service manual 9
Service manual 7. Installation details 7.1 Wrench torque sheet for installation Outside diameter Torque mm inch Kg.m φ6.35 1/4 1.8 φ9.52 3/8 4.2 φ12.7 1/2 5.5 7.2 Connecting the cables The power cord of connect should be selected according to the following specifications sheet. Grade Unit mm 7.3 2 20 26 35 54 1.0 1.0 1.5 2.5 Pipe length and the elevation Pipe size Capacity Model GAS LIQUID Standard Max. length Elevation (m) B (m) Max.
Service manual 7.4 Air purging of the piping and indoor unit Required tools: Hexagonal wrench; adjustable wrench; torque wrenches, wrench to hold the joints and gas leak detector. Note: The air in the indoor unit and in the piping must be purged. If air remains in the refrigeration piping, it will affect the compressor, reduce the cooling capacity, and could lead to a malfunction of unit.
Service manual 7.5 Pumping down (Re-installation) Procedure Confirm that both the 2-way and 3-way valves are set to the opened position. Remove the valve stem caps and confirm that the valve stems are in the opened position. Be sure to use a hexagonal wrench to operate the valve stems. Operate the unit for 10 to 15 minutes. Stop operation and wait for 3 minutes, then connect the charge set to the service port of the 3-way valve. Connect the charge hose with the push pin to the gas service port.
Service manual 7.6 Re-air purging (Re-installation) Procedure: Confirm that both the 2-way and 3-way valves are set to the closed position. Connect the charge set and a charging cylinder to the service port of the 3-way valve. Leave the valve on the charging cylinder closed. Air purging. Open the valves on the charging cylinder and the charge set. Purge the air by loosening the flare nut on the 2-way valve approximately 45’ for 3 seconds then closing it for 1 minutes; repeat 3 times.
Service manual 7.7 Balance refrigerant of the 2-way, 3-way valves Procedure: Confirm that both the 2-way and 3-way valves are set to the open position. Connect the charge set to the 3-way valve’s service port. Leave the valve on the charge set closed. Connect the charge hose with the push pin to the service port. Open the valves (Low side) on the charge set and discharge the refrigerant until the gauge indicates 0.05 to 0.1 Mpa.
Service manual 7.8 Evacuation Procedure: Connect the vacuum pump to the charge set’s centre hose. Evacuation for approximately one hour. Confirm that the gauge needle has moved toward -0.1 Mpa (-76 cmHg) [vacuum of 4 mmHg or less]. Close the valve (Low side) on the charge set, turn off the vacuum pump, and confirm that the gauge needle does not move (approximately 5 minutes after turning off the vacuum pump). Disconnect the charge hose from the vacuum pump.
Service manual 7.9 Gas charging Procedure: 1.Connect the charge hose to the charging cylinder. § Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder. 2.Purge the air from the charge hose. § Open the valve at the bottom of the cylinder and press the check valve on the charge set to purge the air (be careful of the liquid refrigerant). 3.Open the valves (Low side) on the charge set and charge the system with liquid refrigerant.
Service manual 8. Electronic function 8.1 Proper symbols and their meaning TA: Indoor ambient temperature TE: Indoor evaporator temperature TS: Setting temperature through the remote controller I3sec: Self-protection amp of compressor, continue three seconds until turns off the compressor. I5MIN: Self-protection amp of compressor, continue five minutes until turns off the compressor. IFAN: Self-protection amp of outdoor fan/indoor fans when they change from higher wind to lower wind.
Service manual I 3sec Current down Compressor turn off (after 5 second later) I 5min Current up Compressor turn off (after 5 minute later) I fan The outdoor fan turn off (heating) The outdoor fan turn low speed (cooling) I restore Indoor fan: On compressor: On outdoor fan:On If compressor turns off for continuously 4 times due to current protection in 5 minutes from Compressor On, the unit stops and LED displays failure information and can’t returns to normal operation automatically. 8.
Service manual Anti-freezing control to indoor evaporator at cooling mode ( T: evaporator temp. ) Compressor and outdoor fan on EVAP. temp. down EVAP. temp. up Compressor and outdoor fan off (after 5 mins) TE5 8.6 T TE6 Dehumidifying mode 8.6.1 The 4-way valve is off in dehumidifying mode 8.6.
Service manual Compressor and outdoor fan off Room temp. down Room temp. up Compressor and outdoor fan on Ts Ts+2* T Ts+3* * This parameter can be changed from 0 to 3 8.7.4 Indoor Fan actions at heating mode Indoor Fan can be set at HIGH/MID/LOW/AUTO by using a remote controller, but Anti-cold wind function prevails. Anti-cold wind control function at heating mode (T=indoor exchanger temp.) Setting fan speed Breeze T temp. down T temp. up Fan off TE4 8.7.
Service manual Compressor off Fan off Compressor on Fan off T temp. down T temp. up Compressor on Fan on TE9 8.7.7 8.8 8.8.1 TE8 T TE7 The louver opens to Standard Angle ANGLHEAT when power is on for the first time Defrosting mode (available for heating mode) Defrosting condition: Defrosting starts when either of the following ①&②: ① A and B are satisfied: A: The compressor keeps running for 40 minutes or more.
Service manual Defrost 10 or 7.5 minutes 45s Compressor 25s 5s 4-way valve 2s Outdoor fan Indoor fan 10s 8.9 8.9.1 Auto mode The air conditioner automatically selects one of the following operation modes: cooling, heating or fan only according to the temperature difference between room temperature (TA) and set temperature (TS). Heating (fan only at cooling only) Fan only -1 Cooling 2 TA-TS 8.9.2 The indoor fan blows automatically in corresponding selected mode 8.9.
Service manual The total time is 7 hours, after 7 hours the unit stops 8.11.3 Heating: The set temperature decrease 1℃ per hour. Two hours later, the set temperature will maintain as a constant and the air circulation is kept at low speed (Anti-cold function takes precedence over all). The total time is 7 hours, after 7 hours the unit stops 8.11.
Service manual 9. Model and Parameters Model AWI/O-26HPR1 AWI/O-35HPR1 AWI/O-54HPR1 I3SEC 8.5A 10.0A 12.0A 16.0A I5MIN 6.5A 7.5A 8.5A 15.0A IFAN 5.5A 5.5A 7.5A 11.5A IRESTORE 4.5A 4.5A 6.5A 9.5A IDEFROST 3.5A 3.5A 5.0A 7.
Service manual 10. Troubleshooting 10.1 Display board § Operation The indicator flashes once every second after power is on and illuminates when the air conditioner is in operation. § Timer indicator: The indicator illuminates then TIMER is set ON. § PRE-DEF. indicator (For cooling & heating mode only) The air conditioner starts defrosting automatically if outdoor unit frosts in heating operating. At this time, PRE-DEF. indicator illuminates.
Service manual 10.3 Diagnostic chart After energizing, no indicator is lighted and the air conditioner can’t be operated. After energizing, the air conditioner can not be operated. Check if AC 220V power supply outputs to indoor PCB. Yes Check if AC 220V exists at the primary coil of transformer. YES No Indoor PCB is defective. Check if AC 14.5V exists at the secondary coil of transformer. Yes No Take off the secondary plug of transformer, and then check if AC 14.
Service manual 10.4 Resetting phenomenon often occurs during operation. (That is automatically entering to the status when power is on.) The reason is that the instantaneous voltage of main chip is less than 4.5V. Check according to the following procedure: Resetting phenomenon often occurs during operation. Yes After changing indoor PCB, check if the failure realease. Yes Yes Indoor PCB is defective. After changing indoor fan motor, check if the failure realease.
Service manual 10.7 Operation lamp off and Timer lamp flashes Operation lamp off and Timer lamp flashes After changing the main control board, check if the failure realease. No Indoor PCB is defective. The voltage of power supply is too low (less than 187V). No Outdoor unit fault (such as the compressor). Power supply fault. 10.8 Operation lamp on and Timer lamp flashes EEROM error, indoor PCB is defective. 10.9 Operation lamp flashes, Timer lamp flashes .
Service manual 11. Characteristic of temperature sensor Temp. 29 Resistance KΩ Temp. Resistance KΩ Temp. Resistance KΩ -10 62.2756 17 14.6181 44 4.3874 -9 58.7079 18 13.918 45 4.2126 -8 56.3694 19 13.2631 46 4.0459 -7 52.2438 20 12.6431 47 3.8867 -6 49.3161 21 12.0561 48 3.7348 -5 46.5725 22 11.5 49 3.5896 -4 44 23 10.9731 50 3.451 -3 41.5878 24 10.4736 51 3.3185 -2 39.8239 25 10 52 3.1918 -1 37.1988 26 9.5507 53 3.0707 0 35.2024 27 9.
