Sanyo C1852 Service Manual page 34

11. SERVICE PROCEDURES
F. Check indoor fan motor thermal protector (49FMI)
• Disconnect the socket from 9P (WHT) connector.
• Check the continuity
between No. 8 and No.9
poles of the 9P socket.
The thermal protector (49FMI)
is operated.
• Check fan rotation.
Rotate the fan gently once
or twice by hand.
• Check fan motor capacitor.
G. Check fuse on the P.C.B. Ass'y in the indoor unit.
• Check fuse on the P.C.B.
Ass'y in the indoor unit
for continuity.
• Check transformer. (TR1)
• Check resistance of indoor
fan motor winding.
• Check resistance of louver
motor winding.
No continuity.
Fan cannot
be rotated.
OK
When the fuse blows.
OK
(FMI)
OK
(LM)
OK
– 34 –
Check fan casing
for foreign matter
on the inside.
Fan motor burnout
or foreign matter
in bearing.
• Check resistance of drain
pump winding. (DP)
OK
• Check coil of compressor
motor magnetic contactor.
(PR)
OK
• P.C.B. Ass'y is defective.
Remove foreign
matter or repair.
Repair or replace.
0621_X_S
1895_X_S
SM830079