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SM830079
11. SERVICE PROCEDURES
C. Check “Operation selector” switch in the indoor unit.
D. Transformer in indoor unit.
E. Check. auxiliary relay.
0617_X_S
• Has “Operation selector”
switch been set to ON
position ?
YES
Set “Operation selector”
switch to ON.
NO
But neither unit runs.
Switch Ass’y or P.C.B.
Ass’y in the indoor unit
is defective.
IND. LAMP Ass’y or P.C.B.
Ass’y in the indoor unit
is defective.
• Check resistance of
transformer winding. (TR1)
1033_X_S
1894_X_I
• Check coil resistance of
auxiliary relay.
(RY1-RY5)