Symptom: DXG-18, DXH-18, MGC-18 - ERROR CODE E5 Solution: MULTIPLE SOLUTIONS Cause: OVERCURRENT PROTECTION Remarks: DESCRIPTION:*AC UNIT IN COOLING/DRY MODE: THE COMPRESSOR AND OUTDOOR FAN STOP WHILE THE INDOOR FAN CONTINUES TO OPERATE. *AC UNIT IN HEATING MODE: ALL LOADS STOP OPERATION.REPAIR:1) THE SUPPLY VOLTAGE IS UNSTABLE. IT SHOULD...
Symptom: DXG-18, DXH-18, MGC-18 - ERROR CODE E4 Solution: MULTIPLE SOLUTIONS Cause: HIGH DISCHARGE TEMPERATURE PROTECTION OF COMPRESSOR Remarks: DESCRIPTION:*AC UNIT IN COOLING/DRY MODE: THE COMPRESSOR AND OUTDOOR FAN STOP WHILE THE INDOOR FAN CONTINUES TO OPERATE. *AC UNIT IN HEATING MODE: ALL LOADS STOP OPERATION.REPAIR:1) THE AIRFLOW OF...
Symptom: DXG-18, DXH-18, MGC-18 - ERROR CODE E3 Solution: MULTIPLE SOLUTIONS Cause: LOW PRESSURE PROTECTION Remarks: DESCRIPTION:THE COMPLETE UNIT WILL STOP OPERATING.REPAIR:1) THE LPP CONNECTION TERMINAL WIRES OF THE PCB DOESN'T CONNECT WELL WITH THE HIGH PRESSURE SWITCH:SOLUTION 1) CHECK IF THE LPP CONNECTING TERMINAL WIRES OF THE PCB...
Symptom: DXG-18, DXH-18, MGC-18 - ERROR CODE E2 Solution: MULTIPLE SOLUTIONS Cause: ANTI-FREEZING PROTECTION Remarks: DESCRIPTION:AC UNIT IN COOLING/DRY MODE: THE COMPRESSOR AND OUTDOOR FAN STOP OPERATING WHILE THE INDOOR FAN CONTINUES TO OPERATE.REPAIR:1) POOR AIR RETURN IN INDOOR UNIT:SOLUTION 1) CHECK IF THERE ARE ANY OBSTRUCTIONS AND MAKE...
Symptom: DXG-18, DXH-18, MGC-18 - ERROR CODE E1 Solution: MULTIPLE SOLUTIONS Cause: HIGH PRESSURE PROTECTION OF SYSTEM Remarks: DESCRIPTION:*AC UNIT IN COOLING/DRY MODE: ALL LOADS STOP OPERATING (EXCEPT THE INDOOR FAN, THIS WILL CONTINUE TO OPERATE). *AC UNIT IN HEATING MODE: ALL LOADS STOP OPERATION.REPAIR:1) MALFUNCTION OF HIGH PRESSURE...
Symptom: MGTC-20, DXTC-20, DXTH-20 - ERROR CODE EU Solution: MULTIPLE SOLUTIONS Cause: VOLTAGE SENSOR FAULT Remarks: DESCRIPTION:IF THE AC INPUT VOLTAGE EFFECTIVE VALVE TESTS LESS THAN 50V FOR +3 SECONDS WHEN THE RELAY OF THE OUTDOOR UNIT PCB POWER SUPPLY WORKS, THE AC UNIT WILL STOP WORKING IMMEDIATELY FOR...
Symptom: MGTC-20, DXTC-20, DXTH-20 - ERROR CODE EF Solution: MULTIPLE SOLUTIONS Cause: OUTDOOR FAN MOTOR FAULT (DC FAN MOTOR) Remarks: DESCRIPTION:DC FAN MOTOR DEFECT OR FAILURE FROM FAN MOTOR CONTROL BOARD.REPAIR:1) SWITCH OFF THE POWER, THEN SWITCH IT BACK ON. IF THE FAULT REMAINS, CHECK CONNECTION OF CN12-1, CN12-2:SOLUTION...
Symptom: MGTC-20, DXTC-20, DXTH-20 - ERROR CODE EE Solution: MULTIPLE SOLUTIONS Cause: EEPROM FAULT (INDOOR, OUTDOOR) Remarks: DESCRIPTION:PCB EEPROM DATA FAULT OR FAILURE OF MCU READING EEPROM DATA.REPAIR:1) SWITCH OFF THE POWER, THEN SWITCH IT BACK ON. IF THE FAULT REMAINS, IT IS NEEDED TO CHECK IF THE INDOOR...
Symptom: MGTC-20, DXTC-20, DXTH-20 - ERROR CODE EA Solution: MULTIPLE SOLUTIONS Cause: OUTDOOR UNIT CURRENT SENSOR FAULT Remarks: DESCRIPTION:BIAS VOLTAGE OF THE PFC CURRENT SAMPLING CIRCUIT FAULT.REPAIR:1) CHECK IF REFRIGERANT HAS A LEAKAGE:SOLUTION 1) FIND AND REPAIR THE LEAKAGE PROBLEM AND RECHARGE REFRIGERANT2) SWITCH ON AC UNIT, MEASURE THE...
Symptom: MGTC-20, DXTC-20, DXTH-20 - ERROR CODE E9 Solution: MULTIPLE SOLUTIONS Cause: OUTDOOR UNIT IPM MODULE FAULT OR COMPRESSOR DRIVE FAULT Remarks: DESCRIPTION:E9 IS A GENERAL FAILURE CODE OF COMPRESSOR DRIVING FAILURE, IT MAINLY MEANS IPM MODULE PROTECTION. WHEN A UNIT HAS IPM PROTECTION, IT CANNOT BE RECOVERED AUTOMATICALLY.REPAIR:***WIRING...