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Daikin VRV III-S RXYMQ36 48PVJU Service Manual Page 186

60 hz.
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SiUS34-907
Check the fan driver power transistor.
Power OFF
Turn ON the power supply.
Power ON
Troubleshooting
A
Has the
power transistor got
faulty?
NO
Has the
main PCB caused
damage?
NO
Has the
fan driver caused
damage?
NO
Stop (standby)
before the fan rotates.
NO
Stop (standby)
when the compressor
starts up.
NO
U2
The "
"
malfunction recurs.
NO
Troubleshooting by Indication on the Remote Controller
YES
YES
YES
YES
YES
YES
Replace the main PCB (A1P).
Observe the conditions of the
PCB.
Replace the main PCB.
*If the PCB replaced is badly
damaged, the compressor is
likely to fail. To make sure,
recheck the compressor.
Replace the main PCB.
*If the PCB replaced is badly
damaged, the fan motor is
likely to fail. To make sure,
recheck the compressor.
Recheck for the power supply. If
there is no problem with the
power supply, replace the A3P
noise filter PCB.
If the malfunction recurs,
replace the inverter PCB.
Recheck for the power supply. If
there is no problem with the
power supply, replace the main
PCB (A1P).
*If the PCB replaced is badly
damaged, compressor is likely
to fail. To make sure, recheck
the compressor.
Check the harness, and then
replace it if necessary.
End of measures:
The malfunction may
temporarily result from onsite
causes.
Causes: Instantaneous power
failure (open phase), noises,
or else.
177

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  • cp shukla Feb 16, 2016 06:50:
    RXYQ18PAY6 service manual & vrv Fulform