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 resistance of 4-way valve's
winding.
(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.
25
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