25
A Check of indoor fan motor
8-6. TROUBLESHOOTING FLOW
CN211
Indoor power P.C.board
Fuse (F11)
Indoor terminal
P.C.board
Varistor
(NR11)
CN121
Yes ( 0 or )
No
Yes
No
Turn ON the power supply. Rotate indoor fan slowly for 1
revolution or over with a screwdriver etc. from air outlet, and
measure the voltage No.2(+) and No.1(-) on CN121.
No
(Others)
Replace the indoor power P.C. board and the indoor
terminal P.C. board and the indoor electronic control
P.C. board.
Yes
No
Reconnect the lead wires.
Resolder it.
Replace the indoor fan motor.
Yes
Are lead wires connected?
Disconnect the lead wires from connector CN211 on indoor power P.C. board.
Measure the resistance between lead wires No.1 and No.4 and then No.4 and No.7.
Does the voltage repeat 0 and 5 VDC?
Are soldered points of the connector
correctly soldered to indoor power
P.C. board?
Is the resistance 0 (short circuit) or (open circuit)?
Turn OFF the power supply.
Check connector CN211 visually.
MSZ-GC22/25/NA
MSZ-GC35/NA -
C1
The indoor fan motor error has occurred, and the indoor fan doesn't operate.
