Product troubleshooting
Back to Comfortmaker D5FSDAH18XHK
Comfortmaker D5FSDAH18XHK troubleshooting and error codes
These codes are matched from manufacturer documentation to this model's series or control platform. Keep checks visible and safe; do not open electrical, refrigerant, gas, combustion, or sealed equipment compartments.
Source-backed code set
31 matched codes
| Code | Meaning | System area | Priority |
|---|---|---|---|
| EC07 | Outdoor-unit fan speed out of control | Outdoor fan | Service |
| EC51 | Outdoor-unit EEPROM parameter error | Outdoor control | Service |
| EC52 | Outdoor-unit coil temperature sensor error | Outdoor coil sensor T3 | Service |
| EC53 | Outdoor-unit ambient temperature sensor error | Outdoor ambient sensor T4 | Service |
| EC54 | Compressor discharge temperature sensor error | Compressor discharge sensor TP | Service |
| EC56 | Indoor-unit coil temperature sensor error | Indoor coil sensor T2B | Service |
| ECC1 | Another indoor unit detects refrigerant leakage | Refrigerant detection | Urgent |
| EH00 | Indoor-unit EEPROM malfunction | Indoor control | Service |
| EH03 | Indoor-unit fan speed out of control | Indoor fan | Service |
| EH0A | Indoor-unit EEPROM parameter error | Indoor control | Service |
| EH0E | Water-level alarm malfunction | Condensate drainage | Urgent |
| EH12 | Main unit or secondary units malfunction | Multi-unit control | Service |
| EH3A | External fan DC bus voltage too low protection | External fan power | Service |
| EH3b | External fan DC bus voltage too high fault | External fan power | Service |
| EH60 | Indoor-unit room temperature sensor error | Indoor room sensor T1 | Service |
| EH61 | Indoor-unit coil temperature sensor error | Indoor coil sensor T2 | Service |
| EHba | Indoor unit and external fan module communication error | Communication | Service |
| EHC1 | Refrigerant sensor detects leakage | Refrigerant detection | Urgent |
| EHC2 | Refrigerant sensor out of range with leakage detected | Refrigerant detection | Urgent |
| EHC3 | Refrigerant sensor out of range | Refrigerant detection | Urgent |
| EL01 | Indoor and outdoor unit communication error | Communication | Service |
| EL0C | System lacks refrigerant | Refrigerant circuit | Urgent |
| EL11 | Main and secondary units communication malfunction | Multi-unit communication | Service |
| FH07 | Lift-panel communication or opening and closing failure | Lift panel | Service |
| FHCC | Refrigerant sensor error | Refrigerant detection | Urgent |
| PC00 | Outdoor-unit IPM module protection | Inverter power module | Urgent |
| PC01 | Outdoor-unit voltage protection | Outdoor power | Urgent |
| PC02 | Compressor temperature or IPM module protection | Compressor or inverter power module | Urgent |
| PC03 | Low- or high-pressure protection | Refrigerant pressure | Urgent |
| PC04 | Inverter compressor drive error | Compressor drive | Urgent |
| PC0L | Low ambient temperature protection | Low ambient protection | Notice |
No matching error codes found.