Vivax ACP-18COFM50AECI Service Manual page 42

Operating
Self-Check
Power,
Self-Check
Operating
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 ACP-18COFM50AECI
ACP-28COFM82AECI/tri-zone)
Pic 2: IPM or outdoor main PCB (For
ACP-36COFM105AECI
/ qui-zone)