Mitsubishi SCM40ZS-S, Техническое руководство

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216
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'16 • SCM-T-199
'09•SRK-DB-087D
(10) How to make sure of wireless remote control
(C) Power transistor inspection procedure
[Use a tester with a needle indicator for the inspection. (Do not use a digital tester. Check in the AC 300 volt range.)]
(1) If there is a self-diagnosis display, inspect the compressor system (burns, wiring mistakes, etc.) If no problems are found, check
the output of the power transistor .
(2) Output inspection procedure
Disconnect the terminals for the compresseor.
If an output such as the one shown in the figure on the below can be measured, the power transistor and the circuit board for
the outdoor unit are normal.
(Example)
RUN light : ON
TIMER light: 2 time flash
Measure in this section Operation SW ON
8~10 sec. 1 sec. 1 sec. 3 min. 3 min. 1 sec.
0
Output voltage
(ACV)
Simplified check method 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.
wireless
wireless
wireless
wireless
wireless
wireless
(11) Inspection procedure for blown fuse on the indoor and outdoor PCB
Replace the indoor and outdoor PCB and the fan motor. Check then the operation.
Faulty part, other than
fan motor
( )
YES (Fan motor is faulty.)
YES
YES
YES
NO
NO
NO
Replace the faulty part and the
fuse. Test-run then the unit for
checking.
Is there any damage on the internal circuit
of fan motor?
Check the resistance value to judge.
(See pages 215 to 219.)
Is the fuse blown on the indoor and
outdoor PCB?
Is there any faulty part (fan motor, etc)?
(See pages 214 to 219.)
Replace the fuse on the indoor and
outdoor PCB. When the operation is
checked without connecting the fan
motor connector, does the fuse blow?
Go to the inspection procedure for electric
equipment of indoor and outdoor units
(See pages 214 to 219.)
Replace the fuse, and check the operation.
Replace the fan motor, and check the operation.