Sime · A niche brand in the UK. 48 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.
48 codes
| Code | Meaning | Stops? | Homeowner check? |
|---|---|---|---|
| bA | T4 sensor out of operation range | Partly | Yes |
| C7 | High temperature protection of inverter module | Yes | Yes |
| E0 | Water flow malfunction (after 3 times E8) | Yes | Yes |
| E1 | Phase loss or neutral wire and live wire are connected reversely | Yes | Yes |
| E2 | Communication malfunction between controller and hydraulic module | Yes | Yes |
| E3 | Total outlet water temp. sensor (T1) malfunction | Partly | Yes |
| E4 | Water tank temp. sensor (T5) malfunction | Partly | Yes |
| E5 | Air side heat exchanger temperature sensor (T3) malfunction | Partly | Yes |
| E6 | Ambient temperature sensor (T4) malfunction | Partly | Yes |
| E7 | Buffer tank upper temp. sensor (Tbt) malfunction | Partly | Yes |
| E8 | Water flow malfunction | Yes | Yes |
| E9 | Suction temperature sensor (Th) malfunction | Partly | Yes |
| EA | Discharge temperature sensor (Tp) malfunction | Partly | Yes |
| Eb | Solar temp. sensor (Tsolar) malfunction | Partly | Yes |
| Ed | Inlet water temp. sensor (Tw_in) malfunction | Partly | Yes |
| EE | Hydraulic module EEPROM malfunction | Yes | Yes |
| F1 | DC bus low voltage protection | Yes | Yes |
| F6 | EXV1 fault | Yes | Yes |
| H0 | Communication malfunction between main control board and hydraulic module board | Yes | Yes |
| H1 | Communication malfunction between main control board and inverter board | Yes | Yes |
| H2 | Liquid refrigerant temp. sensor (T2) malfunction | Partly | Yes |
| H3 | Gas refrigerant temp. sensor (T2B) malfunction | Partly | Yes |
| H4 | Three times L0 protection | Not stated | Yes |
| H5 | Room temp. sensor (Ta) malfunction | Partly | Yes |
| H6 | The DC fan malfunction | Yes | Yes |
| H7 | Voltage protection | Yes | Yes |
| H8 | Pressure sensor malfunction | Partly | Yes |
| H9 | Outlet water for zone 2 temp. sensor (Tw2) malfunction | Partly | Yes |
| HA | Outlet water temp. sensor (Tw_out) malfunction | Partly | Yes |
| Hb | Three times PP protection and Tw_out below 7 C | Not stated | Yes |
| Hd | Communication malfunction between master unit and slave unit | Yes | Yes |
| HF | Inverter module board EEPROM malfunction | Yes | Yes |
| HH | 10 times H6 in 2 hours | Not stated | Yes |
| HP | Low pressure protection in cooling mode | Yes | Yes |
| L0 | Inverter or compressor protection | Yes | Yes |
| L1 | DC bus low voltage protection | Yes | Yes |
| L2 | DC bus high voltage protection | Yes | Yes |
| L3 | Current sampling error of PFC circuit | Yes | Yes |
| L4 | Rotating stall protection | Yes | Yes |
| L5 | Zero speed protection | Yes | Yes |
| L7 | Phase loss protection of compressor | Yes | Yes |
| P0 | Low pressure switch protection | Yes | Yes |
| P1 | High pressure switch protection | Yes | Yes |
| P3 | Compressor overcurrent protection | Yes | Yes |
| P4 | Comp discharge temp. too high protection | Yes | Yes |
| P5 | |Tw_out-Tw_in| value too big protection | Not stated | Yes |
| Pd | High temperature protection of air side heat exchanger temperature (T3) | Not stated | Yes |
| PP | |Tw_out-Tw_in| abnormal protection | Not stated | Yes |