Technical data

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. (F01)
•
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
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.
Measure resistance of 4-way valve's
windings
22