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8. Troubleshooting

8.1 Indoor unit error display

For 9k, 11k, 18k

Display

Operation lamp flash times Timer lamp

Failure

1 X

EEPROM error

2 X

Zero crossing signal detection error

3 X

Indoor fan speed has been out of control

5 X

Indoor room temperature sensor T1 open circuit

or short circuit

6 X

Evaporator coil temperature sensor T2 open

circuit or short circuit

2 O

Refrigerant leak detection error

For 24k

Display

Operation lamp flash times Timer lamp

Failure

1 X

EEPROM error

2 X

Zero crossing signal detection error

3 X

Indoor fan speed has been out of control.

4 X

Default

5 X

Indoor room temperature sensor T1 open circuit

or short circuit

6 X

Evaporator coil temperature sensor T2 open

circuit or short circuit

2 O

Refrigerant leak detection error

9 X

Indoor unit and outdoor unit communication error

light

off

ƿ˄

flash

Содержание ACP-09CH25AERO

Страница 1: ...EN Service manual 2016 ACP 09CH25AERO ACP 18CH50AERO ACP 12CH35AERO ACP 24CH70AERO ACP 12CH35AEXO ...

Страница 2: ...on 11 5 4 Installation for the first time 12 5 5 Adding the refrigerant after running the system for many years 16 5 6 Re installation while the indoor unit need to be repaired 17 5 7 Re installation while the outdoor unit need to be repaired 19 6 Operation characteristics 22 7 Electronic function 23 7 1 Abbreviation 23 7 2 Display function 23 7 3 Main Protection 24 7 4 Operation Modes and Functio...

Страница 3: ...ly rated breaker of fuse There is risk of fire or electric shock Do not modify or extend the power cable There is risk of fire or electric shock Do not install remove or reinstall the unit by yourself customer There is risk of fire electric shock explosion or injury Be caution when unpacking and installing the product Sharp edges could cause injury be especially careful of the case edges and the f...

Страница 4: ...tion and close the window in storm or hurricane If possible remove the product from the window before the hurricane arrives There is risk of property damage failure of product or electric shock Do not open the inlet grill of the product during operation Do not touch the electrostatic filter if the unit is so equipped There is risk of physical injury electric shock or product failure When the produ...

Страница 5: ...ot use harsh detergents solvents etc There is risk of fire electric shock or damage to the plastic parts of the product Do not touch the metal parts of the product when removing the air filter They are very sharp There is risk of personal injury Do not step on or put anything on the product outdoor units There is risk of personal injury and failure of product Always insert the filter securely Clea...

Страница 6: ...4 water Do not use the remote of the batteries have leaked The chemical in batteries could cause burns or other health hazards ...

Страница 7: ...r Units Series Capacity Indoor units Outdoor units On Off 9k ACP 09CH25AERO I ACP 09CH25AERO O 11k ACP 12CH35AERO I ACP 12CH35AERO O ACP 12CH35AEXO I ACP 12CH35AEXO O 18k ACP 18CH50AERO I ACP 18CH50AERO O 24k ACP 24CH70AERO I ACP 24CH70AERO O ...

Страница 8: ...6 3 Dimension 3 1 Indoor Units W D H Model W D H ACP 09CH25AERO I 680 178 255 ACP 12CH35AERO I 770 188 255 ACP 12CH35AEXO I ACP 18CH50AERO I 905 198 275 ACP 24CH70AERO I 1030 218 315 ...

Страница 9: ...mm Dimension of installation hole mm ACP 09CH25AERO I 170 92 45 65 ACP 12CH35AERO I 170 95 45 ACP 12CH35AEXO I ACP 18CH50AERO I 80 100 45 Model L mm R mm H mm Dimension of installation hole mm ACP 24CH70AERO I 293 163 45 65 L R ...

Страница 10: ...cm More than 30cm More than 60cm Service space Fence or obstacles Model W H D W1 A B ACP 09CH25AERO O 685 260 430 742 460 276 ACP 12CH35AERO O 700 240 540 757 458 250 ACP 12CH35AEXO O ACP 18CH50AERO O 780 250 540 843 549 276 ACP 24CH70AERO O 845 320 700 908 560 335 ...

Страница 11: ... LIQUID SIDE GAS SIDE HEAT EXCHANGE EVAPORATOR HEAT EXCHANGE CONDENSER COMPRESSOR 2 WAY VALVE 3 WAY VALVE 4 WAY VALVE COOLING HEATING T2 Evaporator temp sensor T1 Room temp sensor ACCUMULATOR INDOOR OUTDOOR CHECK VALVE Heating Model only CAPILIARY TUBE ...

Страница 12: ...9 3 4 6500 663kgf cm 6700 683kgf cm 5 2 Connecting the cables The power cord of connect should be selected according to the following specifications sheet Rated current of appliance Nominal cross sectional area mm 3 and 6 0 75 6 and 10 1 0 10 and 16 1 5 16 and 25 2 5 The cable size and the current of the fuse or switch are determined by the maximum current indicated on the nameplate which located ...

Страница 13: ...O O 3 8 Ф9 52 1 4 Ф6 35 5 8 20 20 ACP 12CH35AERO I ACP 12CH35AERO O 1 2 Ф12 7 1 4 Ф6 35 5 8 20 20 ACP 12CH35AEXO I ACP 12CH35AEXO O ACP 18CH50AERO I ACP 18CH50AERO O 1 2 Ф12 7 1 4 Ф6 35 5 10 25 20 ACP 24CH70AERO I ACP 24CH70AERO O 5 8 Ф15 9 3 8 Ф9 52 5 10 25 40 Caution The capacity test is based on the standard length and the maximum permissive length is based on the system reliability ...

Страница 14: ...oor units must be leak tested and evacuated to remove gas and moisture from the system Gas leak check Soap water method Apply soap water or a liquid neutral detergent on the indoor unit connections or outdoor unit connections by a soft brush to check for leakage of the connecting points of the piping If bubbles come out the pipes have leakage 1 Air purging with vacuum pump Indoor unit Liquid side ...

Страница 15: ...uld be pumped 20 minutes more If the pressure can t achieve 0 1Mpa after pumping 50 minutes please check if there are some leakage points Fully close the handle Lo valve of the manifold valve and stop the operation of the vacuum pump Confirm that the gauge needle does not move approximately 5 minutes after turning off the vacuum pump 7 Turn the flare nut of the 3 way valves about 45 counterclockwi...

Страница 16: ...way valve 4 Check the gas leakage Check the flare connections for gas leakage 5 Discharge the refrigerant Close the valve on the charging cylinder and discharge the refrigerant by loosening the flare nut on the 2 way valve approximately 45 until the gauge indicates 0 3 to 0 5 Mpa 6 Disconnect the charge set and the charging cylinder and set the 2 way and 3 way valves to the open position Be sure t...

Страница 17: ... air be careful of the liquid refrigerant 3 Put the charging cylinder onto the electronic scale and record the weight 4 Operate the air conditioner at the cooling mode 5 Open the valves Low side on the charge set and charge the system with liquid refrigerant 6 When the electronic scale displays the proper weight refer to the table disconnect the charge hose from the 3 way valve s service port imme...

Страница 18: ... careful of the liquid refrigerant 3 Put the charging cylinder onto the electronic scale and record the weight 4 Operate the air conditioner at the cooling mode 5 Open the valves Low side on the charge set and charge the system with liquid refrigerant 6 When the electronic scale displays the proper weight refer to the gauge and the pressure of the low side disconnect the charge hose from the 3 way...

Страница 19: ... service port 3 Air purging of the charge hose Open the handle Lo valve of the manifold valve slightly to purge air from the charge hose for 5 seconds and then close it quickly 4 Set the 2 way valve to the close position 5 Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 0 1MPa 6 Set the 3 way valve to the closed position immediately Do this quickly so that the...

Страница 20: ...roximately 45 for 3 seconds then closing it for 1 minute repeat 3 times After purging the air use a torque wrench to tighten the flare nut on the 2 way valve 4 Check the gas leakage Check the flare connections for gas leakage 5 Discharge the refrigerant Close the valve on the charging cylinder and discharge the refrigerant by loosening the flare nut on the 2 way valve approximately 45 until the ga...

Страница 21: ...ystem Procedure 1 Confirm that both the 2 way and 3 way valves are set to the opened position 2 Connect the vacuum pump to 3 way valve s service port 3 Evacuation for approximately one hour Confirm that the compound meter indicates 0 1Mpa 4 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 t...

Страница 22: ...ale and record the weight 4 Open the valves Low side on the charge set and charge the system with liquid refrigerant If the system cannot be charge with the specified amount of refrigerant or can be charged with a little at a time approximately 150g each time operating the air conditioner in the cooling cycle however one time is not sufficient wait approximately 1 minute and then repeat the proced...

Страница 23: ...21 Use torque wrench to tighten the service port cap to a torque of 18N m Be sure to check for gas leakage ...

Страница 24: ...e the unit to function abnormally 2 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 Please set the vertical air flow louver to its maximum angle vertically to the floor and set HIGH fan mode 3 Optimum performance will be achieved within this operating temperature ...

Страница 25: ...tor Flash at 0 5Hz when the unit is standby Illuminate when the unit is turned on Timer indicator This indicator illuminates when TIMER is set ON OFF Defrost Indicator This indicator illuminates when the air conditioner starts defrosting automatically or when the warm air control feature is activated in heating mode Temperature indicator OPTIONAL Displays the temperature settings when the air cond...

Страница 26: ... not correct the unit will stop and the LED will display the failure The correct zero crossing signal time interval should be between 6 13ms 7 3 4 Fan Speed is out of control When Indoor Fan Speed is too low lower than 300RPM lasting certain time the unit stops and LED displays failure information and can t returns to normal operation automatically 7 3 5 Current protection A B C Resume The current...

Страница 27: ...e as in cooling mode 5 Auto fan High Low Medium 7 4 2 Cooling Mode 7 4 2 1 Compressor running rules When indoor room temp T1 is lower than setting value the compressor and outdoor fan will shut off T1 On Off 7 4 2 2 Outdoor fan running rules The On off outdoor units have single fan speed The outdoor fan will run following the compressor except when AC is in evaporator high temp protection in heati...

Страница 28: ...nd auto The auto fan T1 Ts High Low Medium 7 4 2 4 Evaporator low temperature T2 protection T2 On Off When the evaporator coil temp T2 keeps lower than setting value the compressor and outdoor fan will shut off 7 4 3 Heating Mode For Heating Cooling models 7 4 3 1 Compressor running rules When indoor room temp T1 is higher than setting value the compressor and outdoor fan will shut off ...

Страница 29: ... and the current protection 7 4 3 3 Indoor fan running rules Auto fan action T1 TS Low Medium The indoor fan speed will adjust according to the value of T1 TS 7 4 3 4 Defrosting mode AC will enter the defrosting mode according to the value of temp difference between T2 and T1 and also the compressor running time During the defrosting mode the compressor keep running indoor and outdoor motor will s...

Страница 30: ... motor off 7 4 4 Auto mode The machine will choose cooling heating or fan only mode according to ΔT ΔT T1 Ts T1 Ts Cooling Heating Fan only Heating For cooling only models they will run at fan speed AC will run in auto mode in the below cases 1 Press the forced auto button 2 If AC is off it will run in auto mode when timer on function is active 3 After setting the mode AC will run in auto mode if ...

Страница 31: ... auto mode with 24ć setting temperature z When AC receives signals such as switch on switch off timer on timer off mode setting fan speed setting sleeping mode setting follow me setting it will quit the forced operation z The forced operation function cannot be memorized if power off 7 4 7 Auto Restart function The indoor unit is equipped with auto restart function which is carried out through an ...

Страница 32: ...ure sensor T2 open circuit or short circuit EC 2 O Refrigerant leak detection error For 24k Display Operation lamp flash times Timer lamp Failure E1 1 X EEPROM error E2 2 X Zero crossing signal detection error E3 3 X Indoor fan speed has been out of control E4 4 X Default E5 5 X Indoor room temperature sensor T1 open circuit or short circuit E6 6 X Evaporator coil temperature sensor T2 open circui...

Страница 33: ...main PCB Power off then restart the unit 2 minutes later EEPROM a read only memory whose contents can be erased and reprogrammed using a pulsed voltage 8 2 2 Zero crossing detection error diagnosis and solution Yes Indoor main PCB is defective Replace indoor main PCB Power off then restart the unit 2 minutes later ...

Страница 34: ...inutes later Shut off the power supply Rotate the fan by hand The unit operates normally Find out the cause and have it solved Check the wiring of fan motor No Yes No Correct the connections No No Replace the fan motor Yes Yes Measure the voltage for the fan motor from the main PCB Yes Replace the main PCB No ...

Страница 35: ...nning for 15 seconds measure the voltage of pin1 and pin2 If the value of the voltage is less than 100V 208 240V power supply or 50V 115V power supply the PCB must has problems and need to be replaced Position Resistance Value RPG13H YKFG 13 4 4 RPG20D YKFG 20 4 3 RPG25 RPG45C YKFG 45 4 22 Black Red 575Ω 8 20ć 400Ω 8 20ć 287Ω 8 20ć 172Ω 8 20ć White Black 558Ω 8 20ć 383Ω 8 20ć 409Ω 8 20ć 138Ω 8 20ć...

Страница 36: ...it of temperature sensor diagnosis and solution Check the connection between temperature sensor and PCB Correct the connection No Yes Replace indoor or outdoor main PCB Measure the resistance value of the sensor Repalce the sensor No Yes ...

Страница 37: ...in PCB Power on Is the error extinguished Replace the outdoor main PCB Power on Is the error extinguished Check the outdoor wiring connection Check the outdoor wiring connection Replace the indoor main PCB Power on Is the error extinguished g Replace the indoor main PCB Power on Is the error extinguished Yes Replace the outdoor main PCB Replace the outdoor main PCB No Replace the indoor main PCB R...

Страница 38: ...ool air blowing out from indoor air outlet Yes Yes Check if T2 sensor No Check leakage of system No Power off then restart the unit 2 minutes later Replace indoor PCB Yes Repair the leakage and recharge the refrigerant Yes check blockIng of system and clear the blocking ...

Страница 39: ...ity power in capacitor Electrolytic Capacitors HIGH VOLTAGE CAUTION Connect discharge resistance approx 100Ω 40W or soldering iron plug between terminals of the electrolytic capacitor on outdoor PCB Main parts check 1 Temperature sensor checking Disconnect the temperature sensor from PCB measure the resistance value with a tester ...

Страница 40: ...h winding by using the multi meter Table 1 Some frequently used R T data for T1 T2 T3 and T4 sensor Temperature ć 5 10 15 20 25 30 40 50 60 Resistance Value KΩ 26 9 20 7 16 1 12 6 10 8 5 2 3 5 2 4 Table 2 Some frequently used R T data for TP sensor Temperature ć 5 15 25 35 60 70 80 90 100 Resistance Value KΩ 141 6 88 56 1 36 6 13 8 9 7 6 9 5 3 7 Temperature Sensor Characteristic table Temperature ...

Страница 41: ......

Страница 42: ...ZZZ 9 9 FRP ...

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