technical & service manual split system air conditioner

D. Check transformer in indoor unit.
• Measure resistance of primary and
secondary winding.
(TR1)
E. Check fuse on the indoor PCB Ass'y.
• Check fuse on indoor PCB Ass'y
for continuity. (F)
OK
• Check operation lamp to see
if light is ON.
Light is OFF
• Measure resistance of primary and
secondary winding of transformer.
(TR)
OK
• Indoor PCB Ass'y or switch Ass'y
is defective.
F. Check TIMER SELECT button on the remote control unit.
• Timer is turned ON. Check to see
if ON or is displayed on
remote control
If fuse has been blown,
YES
27
• Measure resistance of indoor
fan motor winding.
(FMI)
OK
• Measure resistance of louver
motor winding. (LM)
OK
• Measure coil resistance of magnetic
contactor
(MG)
OK
• Check crank case heater
• Replace the fuse.
OK
Cancel the timer mode.
(CH)