Sanyo Big PACi 18 Series Technical Data & Service Manual page 228

(4) [Alarm "P22"]
Start of defect diagnosis
Are the connectors CN003, CN005,
CN041 and CN042 connected correctly to
the outdoor unit control PCB?
Yes
Does the
fan rotate without resistance
when spun manually after the connectors
CN003, CN005, CN041 and CN042 are
disconnected from the outdoor
unit control PCB?
Yes
Outdoor unit control PCB is faulty.
Normal operation?
Yes
Complete
Outdoor unit fan motor drive circuit trouble
No
No
Replace
No
Correct the connections
Fan motor trouble Replace
Fan motor trouble Replace
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