Mitsubishi Heavy Industries FDT90VNPWVH Service Manual page 125

Operation SW ON
(10) How to make sure of wireless remote control
wireless
(11) Inspection procedure for blown fuse on the indoor unit PCB
(
Faulty part, other than
fan motor
Replace the faulty part and the
fuse. Test-run then the unit for
checking.
Replace the indoor unit PCB and the fan motor. Check then the operation.
Measure in this section
wireless
Is the fuse blown on the indoor unit
PCB?
)
YES
YES
Is there any faulty part (fan motor, etc)?
(See pages 122 to 124.)
YES (Fan motor is faulty.)
Is there any damage on the internal circuit
of fan motor?
Check the resistance value to judge.
(See pages 122 to 124.)
Replace the fuse on the indoor unit
PCB. When the operation is checked
without connecting the fan motor
connector, does the fuse blow?
YES
-
wireless
wireless
Simplified check methd of wireless remote control
It is normal if the signal transmission section of the wireless remote
control emits a whitish light at each transmission on the monitor of
digital camera.
Go to the inspection procedure for electric
NO
equipment of indoor unit.
(See pages 122 to 124.)
NO
Replace the fuse, and check the operation.
NO
Replace the fan motor, and check the operation.
124
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'19 • PAC-SM-334
wireless
wireless