Symptom: MGTC-20, DXTC-20, DXTH-20 - ERROR CODE F7 Solution: MULTIPLE SOLUTIONS Cause: MODULE TEMPERATURE PROTECTION Remarks: DESCRIPTION:THIS IS A IPM OVERTEMPERATURE PROTECTION.REPAIR:1) CHECK THE CONDITION OF THE IPM AND THE HEAT SINK. IF THERE IS A LOOSE CONNECTION, PLEASE FIX IT2) CHECK IF THE IPM IS ABNORMAL OR NOT...
Symptom: MGTC-20, DXTC-20, DXTH-20 - ERROR CODE F6 Solution: MULTIPLE SOLUTIONS Cause: THE COMPRESSOR LACK OF PHASE/ ANTI-PHASE PROTECTION Remarks: DESCRIPTION:IF THE OUTDOOR UNIT PCB CANNOT DETECT ONE- OR EVEN THREE-PHASE OF COMPRESSOR CURRENT, THE F6 PROTECTION CODE WILL BE DISPLAYED.REPAIR:1) CHECK THE WIRING(S) AND THE CONNECTION TO COMPRESSOR....
Symptom: MGTC-20, DXTC-20, DXTH-20 - ERROR CODE F5 Solution: MULTIPLE SOLUTIONS Cause: PFC PROTECTION Remarks: DESCRIPTION:THIS IS A PFC OVERCURRENT PROTECTION.REPAIR:1) IF THE F5 PROTECTION CODE RANDOMLY APPEARS, IT IS A NORMAL PROTECTION THAT IS CAUSED BY POWER SUPPLY FLUCTUATIONS OR IF THE POWER SUPPLY IS ABNORMAL2) REPOWER THE...
Symptom: MGTC-20, DXTC-20, DXTH-20 - ERROR CODE F4 Solution: MULTIPLE SOLUTIONS Cause: COOLING SYSTEM GAS FLOW ABNORMAL PROTECTION Remarks: DESCRIPTION:WHEN THE COMPRESSOR STARTS UP, THE AC UNIT WILL CHECK THE VARIATION OF THE INDOOR UNIT COIL TEMPERATURE. IF THERE IS A MISTAKE AND IT FORGETS TO OPEN THE 2-WAY...
Symptom: MGTC-20, DXTC-20, DXTH-20 - ERROR CODE F3 Solution: MULTIPLE SOLUTIONS Cause: OUTDOOR UNIT COIL TEMPERATURE FAILURE PROTECTION Remarks: DESCRIPTION:IN MOST CASES, THE OUTDOOR COIL TEMPERATURE SENSOR IS LOOSE FROM THE FIXED COPPER PIPE (ON CONDENSER). AFTER THE AC UNIT IS SWITCHED ON FOR 10 MINUTES AND THE TEMPERATURE...
Symptom: MGTC-20, DXTC-20, DXTH-20 - ERROR CODE F2 Solution: MULTIPLE SOLUTIONS Cause: DISCHARGE TEMPERATURE SENSOR FAILURE PROTECTION Remarks: DESCRIPTION:IN MOST CASES, THE DISCHARGE TEMPERATURE SENSOR IS LOOSE FROM THE FIXED COPPER PIPE. AFTER THE AC UNIT IS SWITCHED ON FOR 10 MINUTES AND THE TEMPERATURE IS (ALMOST) NOT CHANGING,...
Symptom: MGTC-20, DXTC-20, DXTH-20 - ERROR CODE P9 Solution: MULTIPLE SOLUTIONS Cause: COMPRESSOR DRIVING PROTECTION Remarks: DESCRIPTION:WHEN THE COMPRESSORE IS STARTING UP OR IT IS IN THE PROCESS OF OPERATION, THE OUTDOOR UNIT WILL SHUT DOWN AND SHOW THE P9 PROTECTION CODE IF:1. THE MCU CANNOT TEST THE FEEDBACK...
Symptom: MGTC-20, DXTC-20, DXTH-20 - ERROR CODE P8 Solution: MULTIPLE SOLUTIONS Cause: OUTDOOR OVERTEMPERATURE/UNDERTEMPERATURE PROTECTION Remarks: DESCRIPTION:WHEN THE ENVIRONMENT TEMPERATURE IS A CERTAIN CONDITION (DESCRIBED IN 1. AND 2. BELOW), THE COMPRESSOR WILL STOP WORKING. AND AFTER 200 SECONDS OF DELAY, THE INDOOR UNIT WILL DISPLAY THE P8 PROTECTION...
Symptom: MGTC-20, DXTC-20, DXTH-20 - ERROR CODE P7 Solution: MULTIPLE SOLUTIONS Cause: OVERHEATING PROTECTION ON HEATING MODE Remarks: DESCRIPTION:ON HEATING MODE, WHEN THE INDOOR UNIT EVAPORATOR COIL TEMPERATURE IS IPTò62?, THE OUTDOOR UNIT PCB WILL SWITCH OFF THE OUTDOOR UNIT AND THE P7 ERROR CODE WILL BE DISPLAYED.REPAIR:1) IT...
Symptom: MGTC-20, DXTC-20, DXTH-20 - ERROR CODE P6 Solution: MULTIPLE SOLUTIONS Cause: OVERHEATING PROTECTION ON COOLING MODE Remarks: DESCRIPTION:ON COOLING OR DRY MODE, WHEN THE OUTDOOR UNIT CONDENSER COIL TEMPERATURE IS OPTò62?, THE MCU WILL SWITCH OFF THE OUTDOOR UNIT AND THE P6 ERROR CODE WILL BE DISPLAYED.REPAIR:1) CHECK...