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Daikin VRV III-S RXYMQ36 48PVJU Service Manual Page 167

60 hz.
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Troubleshooting by Indication on the Remote Controller
Troubleshooting
Caution
Be sure to turn off the power switch before connecting or disconnecting the connector, or parts may be damaged.
Turn OFF the power supply once, and
then check the compressor lead wires.
Do the
lead wires have any
disconnection, broken wire,
short circuit, or ground
fault?
NO
Turn ON the power supply again.
Does the
power supply normally
come back ON?
NO
CHECK 4
Check if the power
transistor is
normal.
YES
CHECK 4
Check if the power
transistor of the fan
driver is normal.
YES
: Refer to the information on P.213.
CHECK 4
158
YES
YES
NO
Check if
insulation resistance of
the compressor is 100kW
and above.
YES
NO
Replace the lead wires.
It is probable that the
malfunction results from
external causes other than
failures (e.g. external noises or
thunder).
NO
Replace the main PCB (A1P) at
the same time.
Replace the main PCB (A1P).
Replace the main PCB (A1P).
Replace the main PCB (A1P).
SiUS34-907
Troubleshooting

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    RXYQ18PAY6 service manual & vrv Fulform