Midea M2OC1-18HRDN1-Q

Pic 1: Measure the voltage of L2 to S (Vs), is
it moving alternately between positive value
and negative value?
PIC 2, Check the wiring.
PFC (qua-zone only)
PIC 3:IPM
(For dual/tri/qua
-
zone)
Power on
Self-Check OK
Operati
Off is OK
PIC4 :Main board LED when power on and unit standby.
PIC 5: check piont buttom,
pess 18 times for check how many indoor units are
connected.