Fault Codes / Midea

57 codes

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• E0 — Mode conflict — indoor units set to different operating modes.
• E1 — Communication error between indoor and outdoor units.
• E4 — Indoor ambient or pipe temperature sensor fault (open or short circuit).
• F1 — DC bus voltage protection (inverter).
• P1 — High pressure protection (refrigerant overcharge or blockage).
• P2 — Low pressure protection (refrigerant leak or lack of airflow).
• P4 — Compressor discharge pipe high temperature protection.

V6/V8

• C0 — Fan motor failed or feedback abnormal.
• C1 — Electronic expansion valve not responding.
• C2 — Condensate overflow or float switch activated.
• C3 — Indoor control board internal error.
• C5 — Built-in sensor in remote controller failed.
• C7 — PL protection occurred three times in 100 minutes (repeated inverter module temperature protection).
• E2 — Condenser fan motor failed or drawing excessive current.
• E3 — Reversing valve not switching correctly.
• E5 — Insufficient refrigerant.
• E6 — Oil not returning to compressor.
• E7 — Main outdoor control board error.
• E8 — System configuration error.
• E9 — EEPROM mismatch (compressor system) — manual restart required.
• F0 — Communication error outdoor ↔ indoor units.
• F2 — Wired remote lost communication with indoor unit.
• F3 — Plate heat exchanger cooling refrigerant outlet temperature sensor (T6B) error.
• F4 — Indoor unit address conflict or not configured.
• F5 — Internal PCB communication within outdoor unit failed.
• F6 — Electronic expansion valve connection error.
• H0 — Communication error between main control chip and inverter driver chip.
• H1 — Indoor pipe temperature sensor fault.
• H2 — Indoor discharge sensor fault.
• H3 — Outdoor air temperature sensor fault.
• H4 — Discharge temperature sensor fault.
• H5 — Suction temperature sensor fault.
• H6 — Heat exchanger temperature sensor fault.
• H7 — CT sensor fault.
• H8 — High pressure sensor fault.
• H9 — Low pressure sensor fault.
• Hd — Slave unit malfunction (displayed on the master unit only).
• L0 — Inverter module protection.
• L1 — DC bus low voltage protection.
• L2 — DC bus high voltage protection.
• L4 — MCE error (compressor commutation error).
• L5 — Zero speed protection (compressor fails to start rotating).
• L7 — Phase sequence error (compressor inverter side).
• L8 — Compressor frequency variation greater than 15Hz within one second — protection.
• L9 — Actual compressor frequency differs from target frequency by more than 15Hz — protection.
• P0 — Discharge pressure exceeded high pressure limit.
• P3 — Compressor discharge temperature exceeded safe limit.
• P5 — Inverter heatsink exceeded safe temperature.
• P6 — Compressor failed to start.
• P7 — Incorrect phase sequence or phase loss.
• P8 — Compressor frequency exceeded maximum.
• P9 — Indoor coil temperature dropped too low.
• Pb — DC link voltage too high.
• Pc — DC link voltage too low.
• Pd — System operating beyond design capacity.
• PL — Inverter module temperature protection.
• PP — Compressor discharge insufficient superheat protection.