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...
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...
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...
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...
Symptom: DXF-19, DXH-19, MGC-19 - ERROR CODE E1 Solution: MULTIPLE SOLUTIONS Cause: INDOOR/OUTDOOR UNIT COMMUNICATION ERROR Remarks: DESCRIPTION:THE INDOOR UNIT HAS NOT RECEIVED FEEDBACK FROM THE OUTDOOR UNIT FOR 110 SECONDS, FOR 4 CONSECUTIVE TIMES.REPAIR:1) TURN POWER OFF, THEN RESTART THE UNIT AFTER 2 MINUTES:DOES A PROBLEM REMAIN? NO...
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)...
Symptom: DXF-19, DXH-19, MGC-19 - ERROR CODE E2 Solution: MULTIPLE SOLUTIONS Cause: ZERO CROSSING SIGNAL DETECTION ERROR Remarks: DESCRIPTION:WHEN PCB DOES NOT RECEIVE ZERO CROSSING SIGNAL FEEDBACK FOR 4 MINUTES OR THE ZERO CROSSING SIGNAL TIME INTERVAL IS ABNORMAL.REPAIR:1) CHECK THE CONNECTIONS AND POWER SUPPLY:IS IT NORMAL?NO = CORRECT...
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...