Symptom: MGTC-20, DXTC-20, DXTH-20 - ERROR CODE E4 Solution: MULTIPLE SOLUTIONS Cause: REFRIGERANT SYSTEM LEAKAGE OR FAULT Remarks: DESCRIPTION:THE E4 ERROR CODE IS A GENERAL FAILURE, MAINLY BECAUSE OF A LEAKAGE.REPAIR:1) IN CASE OF REFRIGERANT LEAKAGE, FIND AND REPAIR LEAKAGE PROBLEM AND RECHARGE REFRIGERANT2) IN CASE OF BLOCKED VALVE,...
Symptom: MGTC-20, DXTC-20, DXTH-20 - ERROR CODE E6 Solution: MULTIPLE SOLUTIONS Cause: INDOOR FAN MOTOR FAULT Remarks: DESCRIPTION:IF NO AIR COMES OUT FROM THE INDOOR UNIT WHILE IT WORKS, THE INDOOR LED DISPLAY WILL SHOW THE E6 ERROR CODE (FOR PG AND DC MOTOR ONLY).REPAIR:1) CHECK THE INDOOR CROSS...
Symptom: MGTC-20, DXTC-20, DXTH-20 - ERROR CODE E7 Solution: MULTIPLE SOLUTIONS Cause: OUTDOOR UNIT AMBIENT TEMPERATURE SENSOR FAULT Remarks: DESCRIPTION:AC UNIT WILL STOP WORKING AND SHOW THE E7 ERROR CODE (ON INDOOR UNIT LED DISPLAY) WHILE THE OUTDOOR UNIT AMBIENT TEMPERATURE SENSOR HAS AN OPEN OR SHORT CIRCUIT. IF...
Symptom: MGTC-20, DXTC-20, DXTH-20 - ERROR CODE E8 Solution: MULTIPLE SOLUTIONS Cause: OUTDOOR UNIT DISCHARGE TEMPERATURE SENSOR FAULT Remarks: DESCRIPTION:AC UNIT WILL STOP WORKING AND SHOW THE E8 ERROR CODE (ON INDOOR UNIT LED DISPLAY) WHILE THE OUTDOOR UNIT DISCHARGE TEMPERATURE SENSOR HAS AN OPEN OR SHORT CIRCUIT. IF...
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...
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 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 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 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: 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...