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Error code reference

Midea Air Conditioner Error Codes

15 error codes documented with diagnostic procedures.

Have your model number? Get codes specific to your unit.
ASOpen or short circuit of ambient temperature sensor (T1).CSOpen or short circuit of condenser temperature sensor (T3).E4Communication malfunction between main control board and display board (no feedback…EdEvaporator de-frosting defectEnEvaporator temperature sensor open circuit or short circuit failure.EoCondenser temperature sensor open circuit or short circuit failure.ErRoom temperature sensor open circuit or short circuit failure.ESOpen or short circuit of evaporator temperature sensor (T2).FCFront desk control modeHIRoom temperature is higher than 99°F (above display range).HSOpen or short circuit of exhaust temperature sensor (T5 or T6).LCControl panel pads are not available; unit can only be set by wired controllerLEDrive-by-wire (wired controller) control failureLORoom temperature is lower than 32°F (below display range).OSOpen or short circuit of outside temperature sensor (T4).

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Step-by-step tests, expected values, wiring diagram references, and verified part numbers.

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Common questions

How do I find the error code on my Midea Air Conditioner?
Most Midea air conditioners show the code directly on the control panel display. If your model has no display, it can be read by entering diagnostic mode with the key sequence for your model. The full procedures include model-specific instructions for reading codes.
Are these codes specific to my model?
The codes here apply broadly to Midea air conditioners. Meanings and diagnostic steps can vary by model and production year, so enter your model number for model-specific information and procedures.
What do I do if my code is not listed?
Some codes are model-specific or only appear in diagnostic mode. Enter your model number to get codes specific to your unit, or contact us. We update the database continuously from manufacturer service documentation.
How much does it cost to access the full diagnostic procedures?
A 3-day pass is $9.95 one-time and gives full access to all brands, codes, and procedures. Monthly access is $29/month with unlimited access to everything including Max AI diagnostics.