Technibel SPA250X5TAA Technical & Service Manual page 46

4. SERVICE PROCEDURES
E. Check. auxiliary relay. (1Y or 2Y)
• Check coil resistance of
auxiliary relay.
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. (TR)
4
• Check resistance of indoor
fan motor winding.
• Check resistance of louver
motor winding.
(1Y or 2Y)
0620_X_S
No continuity.
Fan cannot
be rotated.
OK
When the fuse blows.
OK
(FMI)
OK
(LM)
OK
Check fan casing
for foreign matter
on the inside.
Fan motor burnout
or foreign matter
in bearing.
• Check resistance of dew
proof heater. (DPH)
OK
• Check coil of compressor
motor magnetic contactor.
OK
• P.C.B. Ass'y is defective.
46
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Remove foreign
matter or repair.
Repair or replace.
0621_X_S
(52C)
0665_T_S