C. Check remote control unit.
D. Check fuse on the indoor PCB Ass'y.
E. Check TIMER on the remote control unit.
• Timer is turned ON. Check to see
if or is displayed on
remote control
YES
Cancel the timer mode.
ON
OK
OK
• Check fuse on indoor PCB Ass'y
for continuity. (F)
• Check operation lamp to see
if light is ON.
Light is OFF
• Measure resistance of primary and
secondary winding of transformer.
(TR)
• Indoor PCB Ass'y is defective.
OK
OK
• Measure resistance of indoor and
outdoor fan motor winding.
(FM)
• Measure resistance of compressor
motor winding. (CM)
OK
• Measure coil resistance of power
relay in outdoor unit.
(PR)
• Replace the fuse.
If fuse has been blown,
OK
• Try to run with another remote
control unit.
First remote control unit is defective.
• Check for residue buildup on
transmitter of remote control unit.
• Check for residue buildup on remote
control receiver on front of indoor
unit.
Clean transmitter.
Clean receiver.
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