Technibel MCAV72C5TA Series Technical Data & Service Manual page 22

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,
(F)
OK
Light is OFF
(TR)
OK
is displayed on
YES
22
Clean transmitter.
Clean receiver.
• Measure resistance of indoor and
outdoor fan motor winding.
OK
• Measure resistance of compressor
motor winding.
OK
• Replace the fuse.
Cancel the timer mode.
(FM)
(CM)