Lämpöässä · No longer sold new in the UK. 20 codes across 1 product family, each taken from the manufacturer’s manuals. Lämpöässä technical support ↗
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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.
20 codes
| Code | Meaning | Stops? | Homeowner check? |
|---|---|---|---|
| brine-circuit | Brine (liquid) circuit alarm | Not stated | Yes |
| compressor-not-started | No run feedback from compressor 1 | Yes | Yes |
| dhw-sensor | Hot water temperature sensor fault | Not stated | Yes |
| external-alarm | External alarm input (DI 17 or 18) active; "fatal" status stops compressors, "info" does not (section 5.4.10) | Partly | Yes |
| hc1-sensor | Heating circuit 1 flow sensor fault | Not stated | Yes |
| hc2-sensor | Heating circuit 2 flow sensor fault | Not stated | Yes |
| hc3-sensor | Heating circuit 3 flow sensor fault | Not stated | Yes |
| high-pressure | High pressure switch has tripped | Yes | Yes |
| hot-gas-sensor | Hot gas (discharge) sensor 1 fault | Not stated | Yes |
| internal-heat-protection | Compressor internal thermal protection operated | Yes | Yes |
| low-pressure | Low pressure switch has tripped | Yes | Yes |
| low-tank-sensor | Lower storage tank sensor fault | Not stated | Yes |
| motor-protection | A motor protection circuit breaker (F1-F3) has tripped | Yes | Yes |
| outdoor-sensor | Outdoor temperature sensor fault | No | Yes |
| phase-order | Mains power connection has incorrect phase sequence | Yes | Yes |
| resistor-full-power | Electric heater has run at full power (regulator alarm) | No | Yes |
| room-sensor | Room temperature sensor fault (optional sensor) | No | Yes |
| soft-starter | Soft starter AK1/AK4 fault signal | Yes | Yes |
| temp-not-risen | Storage tank temperature not achieved in set time; electric heating enabled | No | Yes |
| top-tank-sensor | Upper storage tank sensor fault | Not stated | Yes |