E.
Check the auxiliary relay. (1Y or 2Y)
• Check coil resistance of
auxiliary relay.
(1Y or 2Y)
F.
Check the indoor fan motor thermal protector (49FMI)
• Disconnect the socket from the 9P (WHT) connector.
• Check the continuity
between No. 8 and No.9
poles of the 9P socket.
Thermal protector (49FMI)
is actuated.
No continuity.
• Check fan rotation.
Rotate the fan gently once
or twice by hand.
Check fan casing
for foreign matter
on inside.
Remove foreign
matter or repair.
Repair or replace.
Fan cannot
be rotated.
OK
• Check fan motor capacitor.
Fan motor burnout
or foreign matter
in bearing.
G.
Check the fuse on the P.C.B. Ass’y in the indoor unit.
• Check fuse on P.C.B.
Ass'y in indoor unit for
continuity.
• Check transformer. (TR)
• Check resistance of indoor
fan motor winding.
(FMI)
• Check resistance of louver
motor winding. (LM)
When the fuse blows.
OK
OK
• Check coil of compressor
motor magnetic contactor.
(52C)
• P.C.B. Ass'y is defective.
OK
OK
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