20 Nov 83
Symptom: MGTC-20, DXTC-20, DXTH-20 - ERROR CODE P5 Solution: MULTIPLE SOLUTIONS Cause: SUBCOOLING PROTECTION ON COOLING MODE Remarks: DESCRIPTION:ON COOLING OR DRY MODE, WHEN THE INDOOR UNIT EVAPORATOR COIL TEMPERATURE IS IPT...
20 Nov 82
Symptom: MGTC-20, DXTC-20, DXTH-20 - ERROR CODE P4 Solution: MULTIPLE SOLUTIONS Cause: OUTDOOR UNIT DISCHARGE PIPE OVERTEMPERATURE PROTECTION Remarks: DESCRIPTION:WHEN THE DISCHARGE TEMPERATURE IS MORE THAN T DEGREES CELCIUS (110 DEGREES CELCIUS FOR EXAMPLE), THE OUTDOOR PCB WILL SWITCH OFF THE AC UNIT AND DISPLAYS THE P4 ERROR CODE.REPAIR:1)...
20 Nov 81
Symptom: MGTC-20, DXTC-20, DXTH-20 - ERROR CODE P2 Solution: MULTIPLE SOLUTIONS Cause: OVERCURRENT PROTECTION Remarks: DESCRIPTION:WHEN THE AC UNIT HAS MORE CURRENT THAN THE MAXIMUM ALLOWABLE CURRENT, THE UNIT WILL STOP OPERATING AND THE P2 ERROR CODE WILL BE DISPLAYED.REPAIR:1) IT IS A NORMAL PROTECTION IF THE CURRENT IS...
20 Nov 80
Symptom: MGTC-20, DXTC-20, DXTH-20 - ERROR CODE P1 Solution: MULTIPLE SOLUTIONS Cause: UNDERVOLTAGE OR OVERVOLTAGE PROTECTION Remarks: DESCRIPTION:1) THERE IS A VOLTAGE TEST CIRCUIT ON THE OUTDOOR UNIT PCB. WHEN THE AC VOLTAGE TESTS Vó145V, THE MCU WILL PREVENT THE UNIT TO START UP. IF THE UNIT ALREADY STARTED...
20 Nov 79
Symptom: MGTC-20, DXTC-20, DXTH-20 - ERROR CODE E5 Solution: CHECK CORRECT USE OF PCB Cause: INDOOR UNIT MISMATCHED WITH OUTDOOR UNIT Remarks: DESCRIPTION:TEST CODE SENT FROM OUTDOOR UNIT PCB DOES NOT MATCH THE TEST JIG.REPAIR:1) CHECK WHETHER THE PCB IS USED CORRECTLY...
20 Nov 78
Symptom: MGTC-20, DXTC-20, DXTH-20 - ERROR CODE P0 Solution: MULTIPLE SOLUTIONS Cause: IPM MODULE PROTECTION Remarks: DESCRIPTION:INSIDE THE IPM MODULE THERE IS A SELF-PROTECTION MECHANISM AGAINST OVERCURRENT, OVERHEATING, ETC. WHENEVER IPM OVERCURRENT OR OVERHEATING HAPPENS, THE PINS (F0) WILL OUTPUT LOW VOLTAGE. WHEN THE MCU TESTS THE VOLTAGE (ó0.7V...
20 Nov 77
Symptom: MGTC-20, DXTC-20, DXTH-20 - ERROR CODE FY Solution: MULTIPLE SOLUTIONS Cause: GAS LEAKAGE PROTECTION Remarks: DESCRIPTION:AFTER THE COMPRESSOR WORKS IN HIGH FREQUENCY FOR 9 MINUTES, IF THE TEMPERATURE OF THE INDOOR UNIT EVAPORATOR AND THE OUTDOOR UNIT CONDENSER ONLY HAVE VERY MINIMAL VARIATION COMPARED TO PREVIOUS LEVELS BUT...
20 Nov 76
Symptom: DXF-19, DXH-19, MGC-19 - ERROR CODE P6 Solution: MULTIPLE SOLUTIONS Cause: LOW PRESSURE PROTECTION Remarks: DESCRIPTION:WHEN THE SYSTEM PRESSURE REACHES A CERTAIN VALUE, THE LOW PRESSURE PROTECTOR WILL SWITCH OFF. AFTER THE PRESSURE RESUMES BACK TO NORMAL, THE PROTECTION CODE WILL DISAPPEAR.***REPAIR (ONLY FOR 36K MODELS):***1) CHECK THE...
20 Nov 75
Symptom: DXF-19, DXH-19, MGC-19 - ERROR CODE P4 Solution: MULTIPLE SOLUTIONS Cause: INVERTER COMPRESSOR DRIVE ERROR Remarks: DESCRIPTION:AN ABNORMAL INVERTER COMPRESSOR DRIVE IS DETECTED BY A SPECIAL DETECTION CIRCUIT, INCLUDING COMMUNICATION SIGNAL DETECTION, VOLTAGE DETECTION, COMPRESSOR ROTATION SPEED SIGNAL DETECTION, ETC.***REPAIR OPTION 1 (FOR 9K - 24K):***1) CHECK THE...
20 Nov 74
Symptom: DXF-19, DXH-19, MGC-19 - ERROR CODE P2 Solution: MULTIPLE SOLUTIONS Cause: HIGH TEMPERATURE PROTECTION OF IPM MODULE Remarks: DESCRIPTION:IF THE TEMPERATURE OF THE IPM MODULE IS HIGHER THAN SETTING VALUE, THE LED DISPLAYS THIS FAILURE CODE.REPAIR:1) CHECK THE FASTENING SCREWS ON THE PCB AND IPM RADIATOR:ARE THEY FIXED...