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Midea R32 M thermal Arctic Mono fault P3

Compressor current protection

Heat pump

What it means

Error code 23. Compressor current protection detected by user interface and refrigerant system main PCB.

Likely causes

  1. Compressor current exceeds Currentmax for the model
  2. Compressor mechanical fault
  3. Electrical supply issue
  4. Excessive compressor load
  5. Abnormally high compressor current Compressor mechanical failure, high system pressure, electrical supply issues, motor winding fault Power supply abnormal, poor condenser heat exchange, high pressure side blockage, inverter module damaged, or compressor damaged
  6. Compressor overcurrent
  7. Compressor fault
  8. Electrical fault
  9. Discharge temperature exceeding 105°C indicating high compressor load or high ambient/system conditions
  10. Crushed or bent pipe
  11. Blocked EXV
  12. Dirty filter
  13. Compressor current exceeding Currentmax threshold

Where to start

  1. Measure compressor operating current
  2. Compare to model-specific Currentmax value
  3. Check compressor electrical connections

The full answer, free

  • 29 more checks in order
  • The readings and component tests from the manual
  • How to put it right, step by step
  • The manual page for this fault (page 67), right under the answer
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Safety: Isolate the outdoor unit and any backup heater, and give the inverter capacitors time to discharge before you open the electrics. Anything on the refrigerant circuit needs F-gas certification.

From the Midea manual for the R32 M thermal Arctic Mono. Check the model on the data plate before you order parts.

Other Midea R32 M thermal Arctic Mono fault codes