Sanyo C4232 Technical Data & Service Manual page 53

12. SERVICE PROCEDURES
C. Check "Operation selector" switch in the indoor unit.
• Has "Operation selector"
switch been set to ON
position ?
Set "Operation selector"
switch to ON.
Switch Ass'y or P.C.B.
Ass'y in the indoor unit
is defective.
D. Check compressor motor protectors.
(a) High pressure switch (63PH)
• Check high pressure switch.
Does high pressure switch
actuate ?
• Is outdoor heat exchanger
coil dirty or are there
obstacles near air suction
inlet of outdoor unit ?
• Check if outdoor fan rotates.
Refer to "Only outdoor fan
does not run."
E. Transformer in indoor unit.
• Check resistance of
transformer winding. (TR1)
YES
NO
But neither unit runs.
(63PH)
YES
YES
NO
1033_X_S
– 53 –
Disconnect the socket from 2P (WHT) connector.
Check the continuity between No.1 and No.2 poles
of the socket.
IND. LAMP Ass'y or P.C.B.
Ass'y in the indoor unit
is defective.
0617_X_S
Clean heat exchanger coil
or remove obstacles.
0618_X_S
SM830078