Daikin REYQ8-48PY1B, Руководство по обслуживанию

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SiBE37-701_B Troubleshooting by Indication on the Remote Controller
Troubleshooting 334
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
YES
Open phase
Normalize field cause.
Imbalance in
supplied voltage is
in excess of 14 V
(Y1).
∗
1
Is the voltage
imbalance applied
to the inverter in
excess of 14 V
(Y1)?
∗
2
YES
NO
NO
No abnormalities are
observed in the power
supply, but the imbalance
in voltage recurs.
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).
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.
<When voltage monitoring is possible:>
Open phase?
NO
YES
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) K2 contact disposition,
fusion or contact is poor.
(3) Loose or disconnected
noise filter
∗
1. Measure voltage at the X1M power supply
terminal block.
∗
2. Measure voltage at connector X10A (RED,
WHITE and BLACK wire pins) of the diode
module inside the inverter while the compressor
is running.
Replace the inverter PCB.
measure
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.
Be sure to explain to the user that
there is a "power supply imbalance"
for which DAIKIN is not responsible.
(V2816)