Symptom: MGTC-20, DXTC-20, DXTH-20 - ERROR CODE FU Solution: NORMAL PROTECTION Cause: LIMITING/REDUCING FREQUENCY FOR ANTI-FROST PROTECTION Remarks: DESCRIPTION:WHENEVER THE INDOOR UNIT COIL TEMPERATURE IS TOO LOW (FROST).WHEN THE COIL TEMPERATURE REACHES TO THE POINT WHERE FREQUENCY LIMITATION/REDUCTION IS NEEDED, IT WILL ACTIVATE THE FU PROTECTION.REPAIR:1) THIS IS A...
Symptom: MGTC-20, DXTC-20, DXTH-20 - ERROR CODE FP Solution: NORMAL PROTECTION Cause: LIMITING/REDUCING FREQUENCY FOR ANTI-CONDENSATION PROTECTION Remarks: DESCRIPTION:WHENEVER THE INDOOR UNIT COIL TEMPERATURE IS LOWER THAN THE DEW POINT TEMPERATURE IN THE PROCESS OF ANTI-CONDENSATION WHILE IN COOLING MODE.WHEN THE TEMPERATURE REACHES TO THE POINT WHERE FREQUENCY LIMITATION/REDUCTION...
Symptom: MGTC-20, DXTC-20, DXTH-20 - ERROR CODE FH Solution: NORMAL PROTECTION Cause: LIMITING/REDUCING FREQUENCY FOR COMPRESSOR DRIVING PROTECTION Remarks: DESCRIPTION:WHENEVER THE BUS VOLTAGE IS TOO LOW.WHEN THE BUS VOLTAGE REACHES TO THE POINT WHERE FREQUENCY LIMITATION/REDUCTION IS NEEDED, IT WILL ACTIVATE THE FH PROTECTION.REPAIR:1) THIS IS A NORMAL PROTECTION...
Symptom: MGTC-20, DXTC-20, DXTH-20 - ERROR CODE FF Solution: NORMAL PROTECTION Cause: LIMITING/REDUCING FREQUENCY FOR IPM MODULE TEMPERATURE PROTECTION Remarks: DESCRIPTION:WHENEVER THE IPM HAS A HIGH TEMPERATURE.WHEN THE IPM TEMPERATURE REACHES TO THE POINT WHERE FREQUENCY LIMITATION/REDUCTION IS NEEDED, IT WILL ACTIVATE THE FF PROTECTION.REPAIR:1) THIS IS A NORMAL...
Symptom: MGTC-20, DXTC-20, DXTH-20 - ERROR CODE FE Solution: NORMAL PROTECTION Cause: LIMITING/REDUCING FREQUENCY FOR MODULE CURRENT PROTECTION (PHASE CURRENT OF COMPRESSOR) Remarks: DESCRIPTION:WHENEVER THE COMPRESSOR HAS A HIGH PHASE CURRENT WHEN IN OPERATION.WHEN THE CURRENT REACHES TO THE POINT WHERE FREQUENCY LIMITATION/REDUCTION IS NEEDED, IT WILL ACTIVATE THE...
Symptom: MGTC-20, DXTC-20, DXTH-20 - ERROR CODE FC Solution: NORMAL PROTECTION Cause: LIMITING/REDUCING FREQUENCY FOR HIGH POWER CONSUMPTION PROTECTION Remarks: DESCRIPTION:WHENEVER THE OUTDOOR UNIT HAS A HIGH POWER CONSUMPTION. WHEN THE POWER CONSUMPTION REACHES TO THE POINT WHERE FREQUENCY LIMITATION/REDUCTION IS NEEDED, IT WILL ACTIVATE THE FC PROTECTION.REPAIR:1) THIS...
Symptom: MGTC-20, DXTC-20, DXTH-20 - ERROR CODE FB Solution: NORMAL PROTECTION Cause: LIMITING/REDUCING FREQUENCY FOR OVERLOAD PROTECTION ON COOLING/HEATING MODE Remarks: DESCRIPTION:THE COIL TEMPERATURE IS TOO HIGH:1. COOLING MODE: THE OUTDOOR UNIT COIL TEMPERATURE, OR2. HEATING MODE: THE INDOOR UNIT COIL TEMPERATUREWHEN THE TEMPERATURE REACHES TO THE POINT WHERE...
Symptom: MGTC-20, DXTC-20, DXTH-20 - ERROR CODE FA Solution: REPLACE THE OUTDOOR UNIT PCB Cause: COMPRESSOR PHASE CURRENT TEST CIRCUIT FAILURE Remarks: DESCRIPTION:1.65V BIAS VOLTAGE OF THE AMPLIFYING CICUIT FOR THE COMPRESSOR PHASE CURRENT TESTS ABNORMAL.REPAIR:1) PLEASE REPLACE THE OUTDOOR UNIT PCB...
Symptom: MGTC-20, DXTC-20, DXTH-20 - ERROR CODE F9 Solution: REPLACE THE OUTDOOR UNIT PCB Cause: IPM MODULE TEMPERATURE TEST CIRCUIT FAILURE Remarks: DESCRIPTION:THE TEMPERATURE TEST CIRCUIT OF THE IPM MODULE IS ABNORMAL, IT CANNOT TEST THE TEMPERATURE AD VALUE.REPAIR:1) PLEASE REPLACE THE OUTDOOR UNIT PCB...
Symptom: MGTC-20, DXTC-20, DXTH-20 - ERROR CODE F8 Solution: MULTIPLE SOLUTIONS Cause: 4-WAY VALVE REVERSING ABNORMAL Remarks: DESCRIPTION:ON HEATING MODE, IF THE INDOOR UNIT COIL TEMPERATURE SENSOR DETECTS A ROOM TEMPERATURE LOWER THAN 5? OR MORE AFTER THE COMPRESSOR WORKS FOR 8 MINUTES, THE AC UNIT WILL DISPLAY THE...