Difference between revisions of "Serene Plus Series Error Codes"
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| Check ODU PCB. | | Check ODU PCB. | ||
|- | |- | ||
| + | | Fb | ||
| + | | Limiting/reducing frequency for overload protection on Cooling/Heating mode. | ||
| + | | Querying by pressing remote controller. | ||
| + | |- | ||
| + | | FC | ||
| + | | Limiting/reducing frequency for high power consumption protection. | ||
| + | | Querying by pressing remote controller. | ||
| + | |- | ||
| + | | FE | ||
| + | | Limiting/reducing frequency for module current protection (phase current of compressor) | ||
| + | | Querying by pressing remote controller. | ||
| + | |- | ||
| + | | FF | ||
| + | | Limiting/reducing frequency for module temperature protection. | ||
| + | | Querying by pressing remote controller. | ||
| + | |- | ||
| + | | FH | ||
| + | | Limiting/reducing frequency for compressor driving protection. | ||
| + | | Querying by pressing remote controller. | ||
| + | |- | ||
| + | | FP | ||
| + | | Limiting/reducing frequency anti-condensation protection. | ||
| + | | Querying by pressing remote controller. | ||
| + | |- | ||
| + | | FU | ||
| + | | Limiting/reducing frequency for anti-frost protection. | ||
| + | | Querying by pressing remote controller. | ||
| + | |- | ||
| + | | Fj | ||
| + | | Limiting/reducing frequency for discharge over temperature protection. | ||
| + | | Querying by pressing remote controller. | ||
| + | |- | ||
| + | | Fn | ||
| + | | Limiting/reducing frequency for ODU AC current protection. | ||
| + | | Querying by pressing remote controller. | ||
| + | |- | ||
| + | | Fy | ||
| + | | Gas leakage protection. | ||
| + | | Please refer to service manual for details. | ||
| + | |- | ||
| + | | bf | ||
| + | | TVOC sensor failure. (IDU failure, optional) | ||
| + | | Querying by pressing remote controller. | ||
| + | |- | ||
| + | | bc | ||
| + | | PM2.5 sensor failure. (IDU failure, optional) | ||
| + | | Querying by pressing remote controller. | ||
| + | |- | ||
| + | | bj | ||
| + | | Humidity sensor failure. (IDU failure) | ||
| + | | Querying by pressing remote controller. | ||
| + | |- | ||
| + | | CL | ||
| + | | Filter cleaning reminder. | ||
| + | | Turn off power, clean filter than turn on power again. | ||
|} | |} | ||
| + | |||
| + | Return to [[Serene Plus Series]] main page. | ||
Latest revision as of 18:59, 22 January 2026
| Code | Reason | Remark |
|---|---|---|
| E0 | IDU & ODU communication failure. | Check wiring between indoor and outdoor unit. |
| E1 | IDU room temperature sensor failure. | Check IDU room temperature sensor and IDU PCB. |
| E2 | IDU coil temperature sensor failure. | Check IDU coil tempeature sensor and IDU PCB. |
| E3 | ODU coil temperature sensor failure. | Check ODU coil temperature sensor and ODU PCB. |
| E4 | AC cooling system abnormal. | Check for refrigerant leakage, 2-way or 3-way valve blockage, etc. |
| E5 | IDU/ODU mismatch failure. | IDU and ODU model number mismatch. |
| E6 | IDU PG fan motor / DC fan motor abnormality. | Check fan motor, fan blade and PCB. |
| E7 | ODU ambient temperature sensor failure. | Check ODU ambient temperature sensor and ODU PCB. |
| E8 | ODU discharge temperature sensor failure. | Check ODU discharge temperature sensor and ODU PCB. |
| E9 | IPM / Compressor driving control abnormal. | Check ODU PCB and compressor. |
| EA | ODU current test circuit failure. | Check ODU PCB. |
| Eb | Communication abnormal between IDU PCB and IDU display board. | Check display board and IDU PCB. |
| EE | ODU EEPROM failure. | Check ODU PCB or re-power AC unit. |
| EF | ODU DC fan motor failure. | Check ODU fan motor or ODU PCB. |
| EU | ODU voltage test circuit abnormal. | Check ODU PCB. |
| P0 | IPM module protection | Check ODU PCB. |
| P1 | Over / under voltage protection. | Check ODU PCB and power supply. |
| P2 | Over current protection. | Check ODU PCB and power supply. |
| P4 | ODU discharge pipe over temperature protection. | Please refer to service manual for details. |
| P5 | Sub-cooling protection on Cooling mode. | Please refer to service manual for details. |
| P6 | Overheating protection on Cooling mode. | Please refer to service manual for details. |
| P7 | Overheating protection on Heating mode. | Please refer to service manual for details. |
| P8 | Outdoor over temperature/under temperature protection | Please refer to service manual for details. |
| P9 | Compressor driving protection (load abnormal). | Please refer to service manual for details. |
| PA | Communication failure for TOP flow unit / preset mode conflict. (IDU failure) | Please refer to service manual for details. |
| F0 | Infrared customer feeling test sensor failure. (IDU failure) | Querying by pressing remote controller. |
| F1 | Electric power test module failure. (IDU failure) | Querying by pressing remote controller. |
| F2 | Discharge temperature sensor failure protection. | Please refer to service manual for details. |
| F3 | ODU coil temperature failure protection. | Please refer to service manual for details. |
| F4 | Cooling system gas flow abnormal protection. | Please refer to service manual for details. |
| F5 | PFC protection. | Please refer to service manual for details. |
| F6 | The compressor lack of phase / anti-phase protection. | Please refer to service manual for details. |
| F7 | IPM module temperature protection. | Please refer to service manual for details. |
| F8 | 4-Way Valve reversing abnormal. | Please refer to service manual for details. |
| F9 | The module temperature test circuit failure. | Check ODU PCB. |
| FA | The compressor phase-current test circuit failure. | Check ODU PCB. |
| Fb | Limiting/reducing frequency for overload protection on Cooling/Heating mode. | Querying by pressing remote controller. |
| FC | Limiting/reducing frequency for high power consumption protection. | Querying by pressing remote controller. |
| FE | Limiting/reducing frequency for module current protection (phase current of compressor) | Querying by pressing remote controller. |
| FF | Limiting/reducing frequency for module temperature protection. | Querying by pressing remote controller. |
| FH | Limiting/reducing frequency for compressor driving protection. | Querying by pressing remote controller. |
| FP | Limiting/reducing frequency anti-condensation protection. | Querying by pressing remote controller. |
| FU | Limiting/reducing frequency for anti-frost protection. | Querying by pressing remote controller. |
| Fj | Limiting/reducing frequency for discharge over temperature protection. | Querying by pressing remote controller. |
| Fn | Limiting/reducing frequency for ODU AC current protection. | Querying by pressing remote controller. |
| Fy | Gas leakage protection. | Please refer to service manual for details. |
| bf | TVOC sensor failure. (IDU failure, optional) | Querying by pressing remote controller. |
| bc | PM2.5 sensor failure. (IDU failure, optional) | Querying by pressing remote controller. |
| bj | Humidity sensor failure. (IDU failure) | Querying by pressing remote controller. |
| CL | Filter cleaning reminder. | Turn off power, clean filter than turn on power again. |
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