Midea ODMFI-E-2110

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7.4.2.18 The cooling operation or heating operation does not operate.
Potential causes
● Faulty 4-way valve
Check of 4-way, please refer to part 5 in 9.5 Trouble Criterion Of Main Parts.
7.4.2.19 When cooling, heat exchanger of non-operating indoor unit frosts.
When heating, non-operating indoor unit get warm.
Potential causes
● Faulty EXV
● Wire and piping connected in reverse.
Check of EXV, please refer to part 6 in 9.5 Trouble Criterion Of Main Parts.
7.4.2.20 Automatic correction of wiring/piping error:
Press the "check switch" on the outdoor unit PCB board 5 seconds until LED display "CE", which
mean this function is working, Approximately 5-10 minutes after the switch is pressed, the "CE"
disappear the wiring/piping error will be corrected, and wiring/piping is properly connected.
Check switch
LED display