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38

8.2.2

Indoor / outdoor unit’s communication diagnosis and solution(E1)

Error Code

E1

Malfunction decision

conditions

Indoor unit does not receive the feedback from outdoor unit during

110

seconds and this condition happens four times continuously.

Supposed causes

●

Wiring mistake

●

Indoor or outdoor PCB faulty

Trouble shooting:

Measure Vs, is it positive fluctuation?
(Vs is the voltage between S and N of
outdoor unit. Red pan-S, Black pan-N)

Measure Vs, is it positive fluctuation?
(Vs is the voltage between S and N of
outdoor unit. Red pan-S, Black pan-N)

Yes

Power off, then restart the unit 2 minutes later

Power off, then restart the unit 2 minutes later

No

Replace the outdoor main 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?

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.

Replace the indoor main PCB.

No

Check the indoor wiring connection

Check the indoor wiring connection

Yes

Yes

Check whether reactor
is normal?

Check whether reactor
is normal?

Yes

Replace the reactor

Replace the reactor

No

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Содержание O1MVI-09WFR

Страница 1: ... SERVICE MANUAL english wall mounted unit AIR CONDITIONING SYSTEMS MODELS O1MVI 09WFR O1MVO 09 O1MVI 12WFR O1MVO 12 O1MVI 18WFR O1MVO 18 O1MVI 24WFR O1MVO 24 ...

Страница 2: ...the elevation 19 5 4 Installation for the first time 20 5 5 Adding the refrigerant after running the system for many years 21 5 6 Re installation while the indoor unit need to be repaired 22 5 7 Re installation while the outdoor unit need to be repaired 23 6 Operation Characteristics 25 7 Electronic function 26 7 1 Abbreviation 26 7 2 Display function 26 7 3 Main Protection 27 7 4 Operation Modes ...

Страница 3: ...es could cause injury be especially careful of the case edges and the fins on the condenser and evaporator For installation always contact the dealer or an authorized service center Do not install the product on a defective installation stand Be sure the installation area does not deteriorate with age If the base collapses the air conditioner could fall with it causing property damage product fail...

Страница 4: ...evels may cause failure of product Install the drain hose to ensure that water is drained away properly A bad connection may cause water leakage Keep level even when installing the product It can avoid vibration of water leakage Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods It may cause a problem for your neighbors Use two or more people...

Страница 5: ...the all batteries in the remote control with new ones of the same type Do not mix old and new batteries or different types of batteries There is risk of fire or explosion Do not recharge or disassemble the batteries Do not dispose of batteries in a fire They may burn of explode If the liquid from the batteries gets onto your skin or clothes wash it well with clean water Do not use the remote of th...

Страница 6: ...24WFR O1MVO 24 Killer Of Formaldehyde Silver Ico Filter O Vitamin C Filter O 3M HAM Filter O Bio Filter O Golden Fin O Ionizer O Compressor Crankcase Heater O 1W Standby Louver Position Memory Function Refrigerant Leakage Detect Self diag Function Hydrophilic Aluminum Fin Anti rust Cabinet Valve Protection Cover PTC Heating Belt O Filter 2 ways piping connection O optional function ...

Страница 7: ...7 3 Dimension 3 1 Indoor Unit W D H Model W D H O1MVI 09WFR 715 188 250 O1MVI 12WFR 800 188 275 O1MVI 18WFR 940 205 275 O1MVI 24WFR 1045 235 315 ...

Страница 8: ...8 For O1MVI 09WFR ...

Страница 9: ...9 For O1MVI 12WFR ForO1MVI 18WFR ...

Страница 10: ...10 For O1MVI 24WFR ...

Страница 11: ...11 3 2 Outdoor Unit More than 30cm More than 60cm More than 200cm More than 30cm More than 60cm Service space Fence or obstacles ...

Страница 12: ...12 For O1MVO 09 4 8 7 W 1 7 0 W 2 298 555 300 D H 12 60 93 H1 H2 D1 770 W 779 W3 322 D2 25 B1 90 B2 61 5 A2 12 A1 R 6 286 D3 ...

Страница 13: ...13 For O1MVO 12 O1MVO 18 8 0 0 W 5 1 4 W 1 554 60 85 5 340 12 0 311 815 W3 365 333 D 70 W2 H H1 H2 D1 D2 D3 62 B1 106 B2 20 A1 R20 R6 61 6 A2 ...

Страница 14: ...14 For O1MVO 24 ...

Страница 15: ...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 T3 Condenser temp sensor Accumulator T5 Discharge temp sensor T4 Ambient temp sensor INDOOR OUTDOOR O1MVI 09WFR O1MVI 12WFR O1MVI 18WFR O1MVI 24WFR ...

Страница 16: ...16 O1MVO 09 O1MVO 12 202032891454 ...

Страница 17: ...17 O1MVO 18 O1MVO 24 ...

Страница 18: ...19 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 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 o...

Страница 19: ...rigerant g m Gas Liquid O1MVI 09WFR O1MVO 09 3 8 Ф9 52 1 4 Ф6 35 5 10 25 15 O1MVI 12WFR O1MVO 12 3 8 Ф9 52 1 4 Ф6 35 5 10 25 15 O1MVI 18WFR O1MVO 18 1 2 Ф12 7 1 4 Ф6 35 5 20 30 15 O1MVI 24WFR O1MVO 24 5 8 Ф15 9 3 8 Ф9 52 5 25 50 30 Caution The capacity test is based on the standard length and the maximum permissive length is based on the system reliability ...

Страница 20: ... service port 3 Connect the charge hose of handle hi connection to the vacuum pump 4 Fully open the handle Lo of the manifold valve 5 Operate the vacuum pump to evacuate 6 Make evacuation for 30 minutes and check whether the compound meter indicates 0 1Mpa If the meter does not indicate 0 1Mpa after pumping 30 minutes it should be pumped 20 minutes more If the pressure can t achieve 0 1Mpa after p...

Страница 21: ...rom the vacuum pump to the valve at the bottom of the cylinder If the refrigerant is R410A make the cylinder bottom up to ensure the liquid charge 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 Put the charging cylinder onto the electronic scale and record the weig...

Страница 22: ...rge 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 gauge ends up indicating 0 3 to 0 5Mp...

Страница 23: ...pen the 2 way valve and the 3 way valve Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder If the refrigerant is R410A make the cylinder bottom up to ensure liquid charge 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 r...

Страница 24: ...24 Be sure to check for gas leakage ...

Страница 25: ...he above conditions certain safety protection features may come into operation and cause the unit to operate abnormally 2 The room relative humidity should be less than 80 If the air conditioner operates beyond 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 The opti...

Страница 26: ...T indication lamp For cooling heating models only Lights up when the air conditioner starts defrosting automatically or when the warm air control feature is activated in heating operation OPERATION indication lamp This lamp illuminates when the air conditioner is in operation TIMER indication lamp Lights up during Timer operation Temperature indicator Displays the temperature settings when the air...

Страница 27: ...top working 7 3 6 Indoor fan delayed open function When the unit starts up the louver will be active immediately and the indoor fan will open 7s later If the unit runs in heating mode the indoor fan will be also controlled by anti cold wind function 7 3 7 Compressor preheating functions Preheating permitting condition When T4 outdoor ambient temperature 3 C the preheating function will be activate...

Страница 28: ...han setting value the current protection function will be activated and the compressor will stop 7 4 2 2 Outdoor fan running rules The outdoor unit will be run at different fan speed according to T4 For different outdoor units the fan speeds are different T4 A A B C D E 7 4 2 3 Indoor fan running rules In cooling mode indoor fan runs all the time and the speed can be selected as high medium low an...

Страница 29: ... A 7 4 3 3 Indoor fan running rules When the compressor is on the indoor fan can be set to high med low auto mute When indoor unit coil temp is low the anti cold air function will start and indoor fan motor will run at low speed the speed can t be changed when the temp is lower than setting value the indoor fan motor will stop When the indoor temp reaches the setting temp the compressor will stop ...

Страница 30: ...ting temperature is modified the machine will choose running function again 7 4 5 Drying mode Indoor fan speed is fixed at breeze and can t be changed The louver angle is the same as in cooling mode All protections are active and the same as that in cooling mode 7 4 6 Forced operation function Forced cooling mode The compressor and outdoor fan keep running and the indoor fan runs at low speed Afte...

Страница 31: ...0 minutes and turn to auto mode as 24 setting temp If AC is off before power off and AC is required to start up now the compressor will have 1 minute delay when power on Other conditions the compressor will have 3 minutes delay when restarts 7 4 10 Refrigerant Leakage Detection With this new technology the display area will show EC when the outdoor unit detects refrigerant leakage 7 4 11 8 Heating...

Страница 32: ...ME button again the follow me function will be turned off automatically and the temperature will control the unit according to the room temperature detected from its own room temperature sensor and setting temperature 7 4 14 Silence operation optional Press the silence button on remote controller to initiate SILENCE function When the Silence function is activated the compressor running frequency w...

Страница 33: ...uiry information Displaying code Meaning T1 T1 T1 temp T2 T2 T2 temp T3 T3 T3 temp T4 T4 T4 temp T2B Tb T2B temp TP TP TP temp TH TH TH temp Targeted Frequency FT Targeted Frequency Actual Frequency Fr Actual Frequency Indoor fan speed IF Indoor fan speed Outdoor fan speed OF Outdoor fan speed EXV opening angle LA EXV opening angle Compressor continuous running time CT Compressor continuous runnin...

Страница 34: ...31 139 E0 E1 E9 140 141 149 F0 F1 F9 150 151 159 Indoor fan speed Outdoor fan speed 0 OFF 1 2 3 4 Low speed Medium speed High speed Turbo For some big capacity motors 14 FF Actual fan speed Display value turns to decimal value and then multiply 10 The unit is RPM For some small capacity motors display value is from 14 FF hexadecimal the corresponding fan speed range is from 200 2550RPM EXV opening...

Страница 35: ... electricity power in capacitor Electrolytic Capacitors HIGH VOLTAGE CAUTION For other models please connect discharge resistance approx 100Ω 40W or soldering iron plug between terminals of the electrolytic capacitor on the contrary side of the outdoor PCB Note The picture above is only for reference The plug of your side may be different ...

Страница 36: ...F0 Overload current protection 2 times O F1 Outdoor ambient temperature sensor T4 open circuit or short circuit 3 times O F2 Condenser coil temperature sensor T3 open circuit or short circuit 4 times O F3 Compressor discharge temperature sensor T5 open circuit or short circuit 5 times O F4 Outdoor unit EEPROM parameter error 6 times O F5 Outdoor fan speed has been out of control 1 times P0 IPM mal...

Страница 37: ...Installation mistake PCB faulty Trouble shooting Yes Replace the indoor outdoor 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 For the location of EEPROM chip please refer to the below photos Note The two photos above are only for reference it s may be not same totally with the ones on your sid...

Страница 38: ...N Yes Power off then restart the unit 2 minutes later Power off then restart the unit 2 minutes later No Replace the outdoor main 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 Replace the indoor main PCB Powe...

Страница 39: ...upposed causes Wiring mistake Fan ass y faulty Fan motor faulty PCB faulty Trouble shooting Power off then restart the unit 2 minutes 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...

Страница 40: ...control chip is in outdoor PCB Power on and check if the fan can run normally if the fan can run normally the PCB must has problems and need to be replaced If the fan can t run normally measure the resistance of each two pins If the resistance is not equal to each other the fan motor must have problems and need to be replaced otherwise the PCB must has problems and need to be replaced 3 Indoor AC ...

Страница 41: ...sampling voltage is lower than 0 06V or higher than 4 94V the LED will display the failure Supposed causes Wiring mistake Sensor faulty PCB faulty Trouble shooting 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 42: ...conds and this situation happens 3 times the display area will show EC and AC will turn off Supposed causes T2 sensor faulty Indoor PCB faulty System problems such as leakage or blocking Trouble shooting Check cool air blowing out from indoor air outlet Yes Yes Check if T2 sensor is well fixed No Check leakage of system No Power off then restart the unit 2 minutes later Replace indoor PCB Yes Repa...

Страница 43: ... Power supply problems System blockage PCB faulty Wiring mistake Compressor malfunction Check the power supply Check the connections and wires Stop the unit No Yes No Correct the connections or replace the wires Yes Replace the outdoor unit Yes Check the reactor No Replace outdoor main PCB Check the blockage of system Yes No Clear the blockage Check the compressor resistance values Yes No Replace ...

Страница 44: ...on Outdoor fan ass y faulty Compressor malfunction Outdoor PCB faulty Trouble shooting Check the wiring between main PCB and compressor Correct the connection or replace the wires and connectors Yes No Check the IPM No Yes Replace the IPM board or replace the main PCB Check the outdoor fan and the outdoor unit ventilation No Please refer to the solution of Fan Speed Has Been Out Of Control malfunc...

Страница 45: ...ytic capacitors discharge completely and dismount the IPM Use a digital tester to measure the resistance between P and UVWN UVW and N Digital tester Normal resistance value Digital tester Normal resistance value Red Black Several MΩ Red Black Several MΩ P N U N U V V W W Red ...

Страница 46: ...he power supply is normal Check if all the connections and wires are good Disconnect the unit with power supply and try to restart the unit when power supply gets normal No Yes No Correct the connections or replace the wires Yes Power on and when the unit is in standby check if the voltage between P and N is around DC 310V or 340V or 380V Then start up the unit measure the voltage between P and N ...

Страница 47: ...rouble shooting Check the air flow system of indoor and outdoor units Clear up the air inlet and outlet or the heat exchanger of indoor and outdoor units Yes No Yes Yes Power off then restart the unit 10 minutes later Check if the temperature of compressor No Check refrigerant system Yes Check the overload protector Correct the connection No Measure the resistance between the two ports of the OLP ...

Страница 48: ...g mistake IPM malfunction Outdoor fan ass y faulty Compressor malfunction Outdoor PCB faulty Trouble shooting Check the wiring between main PCB and compressor Correct the connection or replace the wires and connectors Yes No Check the IPM No Yes Replace the IPM board or replace the main PCB Check the outdoor fan and the outdoor unit ventilation No Please refer to the solution of Fan Speed Has Been...

Страница 49: ... from PCB measure the resistance value with a tester Temperature Sensors Room temp T1 sensor Indoor coil temp T2 sensor Outdoor coil temp T3 sensor Outdoor ambient temp T4 sensor Compressor discharge temp T5 sensor Measure the resistance value of each winding by using the multi meter ...

Страница 50: ... 29078 117 243 0 38991 2 28 39 8239 38 100 5 62961 78 172 1 25423 118 244 0 37956 1 30 37 1988 39 102 5 39689 79 174 1 2133 119 246 0 36954 0 32 35 2024 40 104 5 17519 80 176 1 17393 120 248 0 35982 1 34 33 3269 41 106 4 96392 81 178 1 13604 121 250 0 35042 2 36 31 5635 42 108 4 76253 82 180 1 09958 122 252 0 3413 3 37 29 9058 43 109 4 5705 83 181 1 06448 123 253 0 33246 4 39 28 3459 44 111 4 3873...

Страница 51: ... 2 422 4 25 222 8 36 97 34 32 76 169 7 82 116 241 2 357 3 27 211 4 37 99 32 94 77 171 7 566 117 243 2 294 2 28 200 7 38 100 31 62 78 172 7 321 118 244 2 233 1 30 190 5 39 102 30 36 79 174 7 086 119 246 2 174 0 32 180 9 40 104 29 15 80 176 6 859 120 248 2 117 1 34 171 9 41 106 28 81 178 6 641 121 250 2 061 2 36 163 3 42 108 26 9 82 180 6 43 122 252 2 007 3 37 155 2 43 109 25 86 83 181 6 228 123 253...

Страница 52: ...pressor checking Measure the resistance value of each winding by using the tester Position Resistance Value ASN98D22UFZ ASM135D23UFZ ATF235D22UMT Blue Red 1 57Ω 20 68 1 75Ω 20 68 0 75Ω 20 68 Blue Black Red Blue ...

Страница 53: ...53 ...

Страница 54: ...Scan here to download the latest version of this manual Σαρώστε εδώ για να κατεβάσετε την τελευταία έκδοση του εγχειριδίου wall mounted unit AIR CONDITIONING SYSTEMS ...

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