Atlantic · A niche brand in the UK. 164 codes across 5 product families, each taken from the manufacturer’s manuals. Atlantic technical support ↗
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164 codes
| Code | Meaning | Stops? | Homeowner check? |
|---|---|---|---|
| 10 | Outdoor sensor. | Partly | Yes |
| 32 | Flow sensor 2 | Partly | Yes |
| 33 | Heat pump initial (flow) temperature sensor error. | Partly | Yes |
| 44 | Heat pump return temperature sensor error. | Partly | Yes |
| 50 | DHW temperature sensor. | Partly | Yes |
| 60 | Ambient (room) temperature sensor 1. | Partly | Yes |
| 65 | Ambient (room) temperature sensor 2. | Partly | Yes |
| 83 | BSB, short circuit | Partly | Yes |
| 105 | Maintenance message. | No | Yes |
| 121 | Flow temperature for heating circuit 1 (HC1) not reached. | No | Yes |
| 122 | Flow temperature for heating circuit 2 (HC2) not reached. | No | Yes |
| 127 | Anti-legionella temperature not reached. | No | Yes |
| 212 | Internal comm failure | Yes | Yes |
| 369 | External fault (safety component). | Yes | Yes |
| 370 | Outdoor unit connection error - see interface-board LED codes (also shown during start phase). | Yes | Yes |
| 370-11 | Serial communication error | Yes | Yes |
| 370-23 | Combination error | Yes | Yes |
| 370-32 | UART communications error | Yes | Yes |
| 370-42 | Hydraulic unit heat-exchange thermistor error | Partly | Yes |
| 370-62 | Outdoor unit main PCB error | Yes | Yes |
| 370-63 | Inverter error | Yes | Yes |
| 370-64 | Active filter error, PFC error | Yes | Yes |
| 370-65 | Outdoor unit IPM error | Yes | Yes |
| 370-71 | Discharge thermistor error | Partly | Yes |
| 370-72 | Compressor thermistor error | Partly | Yes |
| 370-73 | Heat-exchange thermistor error (centre / outlet) | Partly | Yes |
| 370-74 | Outdoor thermistor error | Partly | Yes |
| 370-77 | Heat sink thermistor error (inverter / P.F.C.) | Partly | Yes |
| 370-78 | Expansion valve thermistor error | Partly | Yes |
| 370-84 | Current sensor error | Yes | Yes |
| 370-86 | Pressure sensor error / pressure switch error | Yes | Yes |
| 370-94 | Current tripped | Yes | Yes |
| 370-95 | Compressor motor control error | Yes | Yes |
| 370-97 | Outdoor unit fan motor error | Yes | Yes |
| 370-A1 | Discharge temperature 1 protection | Yes | Yes |
| 370-A3 | Compressor temperature protection | Yes | Yes |
| 370-A5 | Low pressure abnormal | Yes | Yes |
| 370-AC | Outdoor unit radiator temperature error (model 10) | Yes | Yes |
| 441 | 2nd zone sensor not configured (if 2nd circuit kit); set parameter 5700 to 2, 4 or 6 (BX31). | Varies by model | Yes |
| 442 | BX24 no function (as printed; likely BX32) | No | Yes |
| 443 | BX33 no function | No | Yes |
| 444 | BX34 no function | No | Yes |
| 516 | Heat pump missing - check the wiring between X60 and the interface board. | Yes | Yes |
| AOYA30-1 | Temperature sensor faulty (see hydraulic module). | Partly | Yes |
| AOYA30-2 | IPM board faulty. | Yes | Yes |
| AOYA30-3 | Electrical current circuit breaker (current trip) error. | Yes | Yes |
| AOYA30-4 | Fan motor faulty. | Yes | Yes |
| AOYA30-5 | Compressor rotor position not detected. | Yes | Yes |
| AOYA30-6 | ACTPM board faulty. | Yes | Yes |
| AOYA30-7 | Abnormal discharge (back-flow) temperature. | Yes | Yes |
| IF-1-1 | Communication error between hydraulic module and outdoor unit. | Yes | Yes |
| IF-4-1 | Connection error between hydraulic module and outdoor unit. | Yes | Yes |
| IF-4-2 | Hydraulic module exchanger temperature sensor error. | Partly | Yes |
| IF-6-3 | Inverter error. | Yes | Yes |
| IF-6-4 | Active filter / P.F.C. error. | Yes | Yes |
| IF-7-1 | Discharge thermistor error. | Partly | Yes |
| IF-7-2 | Compressor temperature sensor error. | Partly | Yes |
| IF-7-3 | Exchanger temperature sensor error (outlet / centre). | Partly | Yes |
| IF-7-4 | Outdoor temperature sensor error. | Partly | Yes |
| IF-7-7 | Radiator (heat sink) temperature sensor error (inverter / P.F.C.). | Partly | Yes |
| IF-7-8 | Pressure regulator (expansion valve) temperature sensor error. | Yes | Yes |
| IF-8-4 | Compressor current error. | Yes | Yes |
| IF-8-6 | Pressure switch sensor / pressure sensor error. | Yes | Yes |
| IF-9-4 | Current sensor error. | Yes | Yes |
| IF-9-5 | Compressor rotor position error / compressor start-up error. | Yes | Yes |
| IF-9-7 | Outdoor unit fan error. | Yes | Yes |
| IF-10-1 | Discharge temperature protection. | Yes | Yes |
| IF-10-3 | Compressor temperature protection. | Yes | Yes |
| IF-10-5 | Abnormal low pressure. | Yes | Yes |
| IF-11 | Communication error between hydraulic unit and outdoor unit. | Yes | Yes |
| IF-23 | Connection forbidden (series error). | Yes | Yes |
| IF-31 | Indoor unit power supply abnormal. | Yes | Yes |
| IF-32 | Serial communication error between controller/interface PCBs. | Yes | Yes |
| IF-41 | Heat pump capacity signal error (open or short). | Yes | Yes |
| IF-42 | Hydraulic unit heat-exchange thermistor error. | Partly | Yes |
| IF-61 | Outdoor unit power supply abnormal. | Yes | Yes |
| IF-62 | Outdoor unit main PCB error. | Yes | Yes |
| IF-63 | Inverter error. | Yes | Yes |
| IF-64 | Active filter error. | Yes | Yes |
| IF-65 | Outdoor unit IPM error. | Yes | Yes |
| IF-67 | Outdoor unit power short interruption error (protective operation). | Yes | Yes |
| IF-68 | Outdoor unit magnetic relay error. | Yes | Yes |
| IF-71 | Discharge thermistor error. | Partly | Yes |
| IF-72 | Compressor thermistor error. | Partly | Yes |
| IF-73 | Heat-exchange thermistor (outlet / intermediate) error. | Partly | Yes |
| IF-74 | Outdoor thermistor error. | Partly | Yes |
| IF-77 | Outdoor unit heat sink temperature thermistor error. | Partly | Yes |
| IF-78 | Expansion valve thermistor error. | Partly | Yes |
| IF-84 | Current sensor error. | Yes | Yes |
| IF-86 | Pressure sensor error / pressure switch error. | Yes | Yes |
| IF-94 | Current trip. | Yes | Yes |
| IF-95 | Detection of compressor position error / compressor start-up error. | Yes | Yes |
| IF-97 | Outdoor unit fan motor error. | Yes | Yes |
| IF-A1 | Discharge temperature protection. | Yes | Yes |
| IF-A3 | Compressor temperature protection. | Yes | Yes |
| IF-A4 | Outdoor unit pressure error. | Yes | Yes |
| IF-A5 | Low pressure abnormal. | Yes | Yes |
| IF-A9 | Current overload error. | Yes | Yes |
| no-connection | No connection - failure to comply with room thermostat polarity. | Yes | Yes |
| ODU-1F | Serial forward transfer error. | Yes | Yes |
| ODU-2F | Discharge thermistor error. | Partly | Yes |
| ODU-3F | Pressure sensor error. | Yes | Yes |
| ODU-4F | Heat-exchange thermistor (outlet) error. | Partly | Yes |
| ODU-5F | Heat-exchange thermistor (intermediate) error. | Partly | Yes |
| ODU-6F | Expansion valve thermistor error. | Partly | Yes |
| ODU-7F | Outdoor temperature thermistor error. | Partly | Yes |
| ODU-8F | Compressor thermistor error. | Partly | Yes |
| ODU-9F | Heat sink thermistor error. | Partly | Yes |
| ODU-11F | Discharge temperature protection (permanent stoppage). | Yes | Yes |
| ODU-12F | Compressor temperature protection (permanent stoppage). | Yes | Yes |
| ODU-13F | Current trip (permanent stoppage). | Yes | Yes |
| ODU-14F | Detection of compressor position error (permanent stoppage). | Yes | Yes |
| ODU-15F | Compressor start up error (permanent stoppage). | Yes | Yes |
| ODU-16F | Fan motor 1 error (permanent stoppage). | Yes | Yes |
| ODU-17F | Fan motor 2 error (permanent stoppage). | Yes | Yes |
| ODU-18F | Inverter error. | Yes | Yes |
| ODU-19F | Active filter error. | Yes | Yes |
| ODU-20F | Low pressure abnormal. | Yes | Yes |
| ODU-21F | Connection with hydraulic unit error. | Yes | Yes |
| ODU-22F | Hydraulic unit abnormality condition. | Yes | Yes |
| ODU1-1F | Serial forward transfer error. | Yes | Yes |
| ODU1-2F | Discharge thermistor error. | Partly | Yes |
| ODU1-3F | Pressure sensor error. | Varies by model | Yes |
| ODU1-4F | Heat-exchange thermistor (outlet) error. | Partly | Yes |
| ODU1-5F | Heat-exchange thermistor (intermediate) error. | Partly | Yes |
| ODU1-6F | Expansion valve thermistor error. | Varies by model | Yes |
| ODU1-7F | Outdoor temperature thermistor error. | Partly | Yes |
| ODU1-8F | Compressor thermistor error. | Partly | Yes |
| ODU1-9F | Heat sink thermistor error. | Varies by model | Yes |
| ODU1-10F | Abnormal compressor temperature (hybrid duo 13). | Yes | Yes |
| ODU1-11F | Discharge temperature protection (permanent stoppage). | Yes | Yes |
| ODU1-12F | Compressor temperature protection (permanent stoppage). | Yes | Yes |
| ODU1-13F | Current trip (permanent stoppage). | Yes | Yes |
| ODU1-14F | Detection of compressor position error (permanent stoppage). | Yes | Yes |
| ODU1-15F | Compressor start up error (permanent stoppage). | Yes | Yes |
| ODU1-16F | Fan motor 1 error (permanent stoppage). | Yes | Yes |
| ODU1-17F | Fan motor 2 error (permanent stoppage). | Yes | Yes |
| ODU1-18F | Inverter error. | Yes | Yes |
| ODU1-19F | Active filter error. | Yes | Yes |
| ODU1-20F | Low pressure abnormal. | Yes | Yes |
| ODU1-22F | Hydraulic unit abnormality condition. | Yes | Yes |
| ODU1-SAFETY | Safety mode. | Yes | Yes |
| ODU3-1F | Serial forward transfer error. | Yes | Yes |
| ODU3-2F | Discharge thermistor error. | Partly | Yes |
| ODU3-3F | Pressure sensor error. | Yes | Yes |
| ODU3-4F | Heat-exchange thermistor (outlet) error. | Partly | Yes |
| ODU3-5F | Heat-exchange thermistor (intermediate) error. | Partly | Yes |
| ODU3-6F | Expansion valve thermistor error. | Partly | Yes |
| ODU3-7F | Outdoor temperature thermistor error. | Partly | Yes |
| ODU3-8F | Compressor thermistor error. | Partly | Yes |
| ODU3-9F | Heat sink thermistor (inverter) error. | Partly | Yes |
| ODU3-10F | Heat sink thermistor (P.F.C.) error. | Partly | Yes |
| ODU3-11F | Discharge temperature protection (permanent stoppage). | Yes | Yes |
| ODU3-12F | Compressor temperature protection (permanent stoppage). | Yes | Yes |
| ODU3-13F | Current trip (permanent stoppage). | Yes | Yes |
| ODU3-14F | Detection of compressor position error (permanent stoppage). | Yes | Yes |
| ODU3-15F | Compressor start up error (permanent stoppage). | Yes | Yes |
| ODU3-16F | Fan motor 1 error (permanent stoppage). | Yes | Yes |
| ODU3-17F | Fan motor 2 error (permanent stoppage). | Yes | Yes |
| ODU3-18F | Inverter error. | Yes | Yes |
| ODU3-19F | P.F.C. error. | Yes | Yes |
| ODU3-20F | Low pressure abnormal. | Yes | Yes |
| ODU3-21F | Connection error with the hydraulic module. | Yes | Yes |
| ODU3-22F | Hydraulic unit abnormality condition. | Yes | Yes |