Rinnai · A niche brand in the UK. 44 codes across 2 product families, 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.
44 codes
| Code | Meaning | Stops? | Homeowner check? |
|---|---|---|---|
| E00 | Remote off | No | Yes |
| E001 | High pressure alarm | Yes | Yes |
| E002 | Low pressure alarm | Yes | Yes |
| E005 | Antifreeze alarm | Partly | Yes |
| E006 | Flow alarm | Yes | Yes |
| E008 | Compressor driver limitation alarm | Yes | Yes |
| E009 | Discharge high temperature alarm | Yes | Yes |
| E010 | Solar collector high temperature alarm | Not stated | Yes |
| E018 | Cooling high temperature alarm | Not stated | Yes |
| E020 | Inverted trasductors pressure alarm | Yes | Yes |
| E041 | Inconsistent temperatures alarm | Yes | Yes |
| E050 | DHW storage tank high temperature alarm | Not stated | Yes |
| E101 | Communication timeout with Slave 1 | Yes | Yes |
| E611 | Water inlet probe failure | Partly | Yes |
| E621 | Water outlet probe failure | Partly | Yes |
| E631 | Compressor intake probe failure | Partly | Yes |
| E641 | Compressor discharge probe fault / high pressure switch trip | Partly | Yes |
| E651 | Outdoor air probe failure | Partly | Yes |
| E652 | Mixer probe failure | Partly | Yes |
| E661 | DHW probe failure | Partly | Yes |
| E662 | Solar storage tank probe failure | Partly | Yes |
| E671 | Plant remote probe failure | Partly | Yes |
| E672 | Solar collector probe failure | Partly | Yes |
| E691 | Low pressure transducer failure | Partly | Yes |
| E701 | High pressure probe failure | Partly | Yes |
| E711 | 0-10Vdc live input failure | Yes | Yes |
| E801 | Pressure inverter timeout | Yes | Yes |
| E821 | IPM module overcurrent | Yes | Yes |
| E831 | PFC module overheating | Yes | Yes |
| E841 | Inverter abnormal voltage DC Bus side | Yes | Yes |
| E851 | Inverter Hardware problem | Yes | Yes |
| E861 | Motor current too high | Yes | Yes |
| E871 | Heatsink over-heat protection | Yes | Yes |
| E881 | Supply voltage out of limits (DC Bus Error) | Yes | Yes |
| E891 | Driving protection-output phase loss | Yes | Yes |
| E901 | Compressor driver and model mismatch | Yes | Yes |
| E911 | Overload protection | Yes | Yes |
| E921 | PFC_POE over current | Yes | Yes |
| E931 | Comunication error with main controller | Yes | Yes |
| E941 | PFC converter fault | Yes | Yes |
| E951 | Heatsink and/or ambient temperature sensor error | Partly | Yes |
| E961 | Abnormal condition | Not stated | Yes |
| E971 | EEPROM not initialize | Yes | Yes |
| E981 | High pressure inverter | Yes | Yes |