Kingspan (Aeromax) · No longer sold new in the UK. 23 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.
23 codes
| Code | Meaning | Stops? | Homeowner check? |
|---|---|---|---|
| 2 | Safety input | Yes | Yes |
| 3 | Enter (entering/return) water temperature sensor (EWT) failure / out of range | Yes | Yes |
| 4 | Actual refrigerant temperature sensor (BPHE TR) failure / out of range | Yes | Yes |
| 5 | Outdoor air sensor of GMC | Partly | Yes |
| 6 | Loss of communication to NUI control | Partly | Yes |
| 7 | NUI control room sensor | No | Yes |
| 8 | Unit capacity mismatch | Yes | Yes |
| 9 | Flow switch error / water pump | Yes | Yes |
| 10 | EEPROM corrupt | Yes | Yes |
| 13 | Loss of communication to RS485 (system configuration type 6) | Partly | Yes |
| 14 | Loss of signal from inverter board / high temperature release (thermostat on compressor) | Yes | Yes |
| 15 | Exit (leaving) water temperature sensor (LWT) failure / out of range | Yes | Yes |
| 17 | Inverter air sensor (TO) failure / out of range | Yes | Yes |
| 18 | G-Tr inverter short-circuit protection | Yes | Yes |
| 20 | Compressor position detection circuit error | Yes | Yes |
| 21 | Inverter current sensor error | Yes | Yes |
| 22 | Heat exchanger sensors (TE)/(TS) failure / out of range | Yes | Yes |
| 23 | Discharge temperature sensor (TD) | Yes | Yes |
| 24 | Outdoor fan motor error | Yes | Yes |
| 26 | Other inverter board error | Yes | Yes |
| 27 | Compressor lock | Yes | Yes |
| 28 | Discharge temperature error (failure / out of range) | Yes | Yes |
| 29 | Compressor breakdown | Yes | Yes |