INSTAGROUP LTD · A niche brand in the UK. 42 codes across 1 product family, each taken from the manufacturer’s manuals.
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Type the code on your display or a word from its meaning. Each code opens its own page with what it means, whether it is safe and what you can check.
42 codes
| Code | Meaning | Stops? | Homeowner check? |
|---|---|---|---|
| Er01 | Power supply phase loss | Not stated | Yes |
| Er03 | Water flow fault | Not stated | Yes |
| Er04 | Antifreeze protection | Not stated | Yes |
| Er05 | High voltage fault | Not stated | Yes |
| Er06 | Low voltage fault | Not stated | Yes |
| Er09 | Communication failure | Not stated | Yes |
| Er10 | Communication fault of frequency conversion module | Not stated | Yes |
| Er12 | Protection for high exhaust gas temperature | Not stated | Yes |
| Er14 | Tank temperature sensor fault | Not stated | Yes |
| Er15 | Inlet water temperature sensor fault | Not stated | Yes |
| Er16 | Evaporator coil temperature sensor fault | Not stated | Yes |
| Er18 | Exhaust temperature sensor fault | Not stated | Yes |
| Er20 | Protection for inverter module abnormality (see detailed codes) | Not stated | Yes |
| Er21 | Ambient temperature sensor fault | Not stated | Yes |
| Er23 | Protection for low outlet water temperature | Not stated | Yes |
| Er26 | Radiator temperature fault | Not stated | Yes |
| Er27 | Water outlet temperature sensor fault | Not stated | Yes |
| Er29 | Return gas temperature sensor fault | Not stated | Yes |
| Er32 | Protection for high outlet water temperature | Not stated | Yes |
| Er33 | Evaporator coil temperature is too high | Not stated | Yes |
| Er34 | Inverter module temperature is too high | Not stated | Yes |
| Er42 | Internal coil temperature sensor fault | Not stated | Yes |
| Er46 | DC fan motor failure | Not stated | Yes |
| Er62 | Economizer inlet temperature sensor fault | Not stated | Yes |
| Er63 | Economizer outlet temperature sensor fault | Not stated | Yes |
| Er64 | DC fan 1 fault | Not stated | Yes |
| Er66 | DC fan 2 fault | Not stated | Yes |
| Er67 | Low pressure switch fault | Not stated | Yes |
| Er68 | High pressure switch fault | Not stated | Yes |
| Er69 | Pressure protection too low | Not stated | Yes |
| Er70 | Pressure protection too high | Not stated | Yes |
| Er72 | Fan drive board communication error | Not stated | Yes |
| Er73 | Expansion board communication error | Not stated | Yes |
| Er74 | Total outlet water temperature sensor failure | Not stated | Yes |
| Er75 | Refrigerant leakage protection | Not stated | Yes |
| Er76 | Refrigerant sensor failure | Not stated | Yes |
| Er79 | Direct water pump under-voltage failure | Not stated | Yes |
| Er80 | Direct water pump stall failure | Not stated | Yes |
| Er81 | Other faults of direct water pump | Not stated | Yes |
| Er82 | Communication failure of direct water pump | Not stated | Yes |
| Er84 | Communication failure between indoor and outdoor units | Not stated | Yes |
| Er99 | All communication failure | Not stated | Yes |