Midea M2OD-14HFN1-Q Service Manual page 45

Operating
Self-Check
Power,
Self-Check
Operating
els)
Pic 1: check the voltage of N to S
(Vs), is it moving alternately
between positive value and negative
value?
Pic 2:IPM or outdoor main PCB (For
M2OD-14HFN1-Q/M2OD-18HFN1-Q
(W210) / M4OD-28HFN1-Q/tri-zone)
Pic 2: IPM or outdoor main PCB (For
M2OD-16HFN1-Q /
M2OD-18HFN1-Q(W190)/M4OA-36H
FN1-Q/ qui-zone)