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Daikin VRV III-S RXYMQ36 48PVJU Service Manual Page 179

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.
Imbalance
in supplied voltage is
in excess of 14 V
(Y1). *1
NO
Is
the voltage
imbalance applied to the
inverter in excess of
14 V (Y1)?
NO
<When voltage monitoring is possible:>
No abnormalities are observed in the
power supply, but the imbalance in
voltage recurs.
Explanation for users *In accordance with "notification of inspection results" accompanying spare parts.
Give the user a copy of "notification of inspection results" and leave
it up to him to improve the imbalance.
*1.Measure voltage at the X1M power supply terminal block.
170
YES
Open phase?
NO
YES
Using a device capable of constant
recording of power supply voltage
record power supply voltage
between 3 phases (L1 ~ L2, L2 ~ L3,
L3~L1) for about one continuous
week.
Power supply voltage imbalance
Even if the power supply voltage is not
unbalanced when measuring it, there
are many cases where it gets
unbalanced during nighttime (around
6:00PM to 10:00PM).
measure
YES
Open phase
Normalize field cause.
Fix power supply voltage
imbalance.
Part or wiring defect
After turning the power supply
OFF, check and repair the main
circuit wiring or parts.
(1) Loose or disconnected
wiring between power
supply and inverter
(2) Loose or disconnected noise
filter
Replace the inverter PCB.
Be sure to explain to the user that
there is a "power supply imbalance"
for which DAIKIN is not responsible.
SiUS34-907
Troubleshooting

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