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: DXF-19, DXH-19, MGC-19 - ERROR CODE EC Solution: MULTIPLE SOLUTIONS Cause: REFRIGERANT LEAKAGE DETECTION Remarks: DESCRIPTION:DEFINE THE EVAPORATOR COIL TEMPERATURE. T2 OF THE COMPRESSOR JUST STARTS RUNNING AS TCOOL.IN THE FIRST 8 MINUTES AFTER THE COMPRESSOR STARTS UP, IF 'T2 < TCOOL-2 DEGREES CELCIUS' DOES NOT CONTINUE FOR...
Symptom: DXF-19, DXH-19, MGC-19 - ERROR CODE F0 Solution: MULTIPLE SOLUTIONS Cause: OVERLOAD CURRENT PROTECTION Remarks: DESCRIPTION:AN ABNORMAL CURRENT INCREASE IS DETECTED BY CHECKING THE SPECIFIED CURRENT DETECTION CIRCUIT.REPAIR:1) CHECK THE POWER SUPPLY:IS IT FUNCTIONING PROPERLY?NO = STOP THE UNITYES = CHECK 2)2) CHECK SYSTEM FOR BLOCKAGES:DO ANY EXIST?YES...
Symptom: MGC-19,DXH-19, DXF-19 P0 Solution: MULTIPLE SOLUTIONS Cause: IPM MALFUNCTION OR IGBT OVER-STRONG CURRENT PROTECTION Remarks: DESCRIPTION: WHEN THE VOLTAGE SIGNAL THAT THE IPM SENDS TO THE COMPRESSOR DRIVE CHIP IS ABNORMAL, THE DISPLAY LED SHOWS "P0" AND THE AC TURNS OFF.***REPAIR OPTION 1 (FOR 9K - 24K):*** 1)...
Symptom: DXF-19, DXH-19, MGC-19 - ERROR CODE P1 Solution: MULTIPLE SOLUTIONS Cause: OVER VOLTAGE OR TOO LOW VOLTAGE PROTECTION Remarks: DESCRIPTION: ABNORMAL INCREASES OR DECREASES IN VOLTAGE ARE DETECTED BY CHECKING THE SPECIFIED VOLTAGE DETECTION CIRCUIT.REPAIR:1) CHECK THE POWER SUPPLY:IS IT FUNCTIONING PROPERLY? NO = TURN OFF THE UNITYES...
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...
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...
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...
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...
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...