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8.4.2.4 E4 (Outdoor temperature sensor (coil sensor T3,ambient sensor T4, Compressor discharge

sensor T5、indoor coil outlet pipe sensor T2B) malfunction) diagnosis and solution

F1/F2/F3/F4/F5 (No.A,B,C,D,E Indoor unit coil outlet temp. sensor malfunction) diagnosis and

solution.

Error Code

E4/F1/F2/F3/F4/F5

Malfunction

conditions

If the sampling voltage is lower than 0.06V or higher than

4.94V, the LED will display the failure.

Potential causes

● Wiring mistake

● Faulty sensor

● Faulty PCB

Trouble shooting:

Midea MCH5U-48PHH2 User Manual

Questions and Answers: