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C. Check remote control unit.
• 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.
D. Check fuse on the indoor PCB Ass'y.
• Check fuse on indoor PCB Ass'y
for continuity.
• Check operation lamp to see
if light is ON.
• Measure resistance of primary and
secondary winding of transformer.
• Indoor PCB Ass'y is defective.
E. Check TIMER on the remote control unit.
• Timer is turned ON. Check to see
if
or
ON
remote control
OK
If fuse has been blown,
(F01)
OK
Light is OFF
(TR)
OK
YES
is displayed on
Measure resistance of indoor and
outdoor fan motor winding.
Measure resistance of compressor
motor winding.
Measure resistance of 4-way valve's
windings
Replace the fuse.
Cancel the timer mode.
19
Clean transmitter.
Clean receiver.
(FM)
OK
(CM)
OK
OK
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