Daikin RQYQ140-180PY1, Руководство по обслуживанию, Страница: 126 / 231

Troubleshooting by Remote Controller SiBE341001
117 Troubleshooting
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Check if the
stop valve is
open.
Check if the relay wires
to the compressor are
correct.
Check if the connection
of UVW phase order is
correct.
Check if the wiring is the
same as in the electric wiring
diagram.
The insulation resistance of
the compressor is low (not
more than 100kW).
The compressor coil
has disconnection of
wires.
Restart and check the
operation. Check if the
condition occurs again.
Restart
and check if the
malfunction occurs
again.
Restart
and check if the
malfunction occurs
again.
Check if the start
mode is in the high
differential pressure
(not less than 0.5
MPa).
Check 4
Is the power transistor
normal?
NO
YES
NO
YES
NO
YES
NO
YES
YES
NO
YES
YES
NO
NO
NO
YES
YES
YES
NO
NO
YES
NO
Local factor
Open the stop valve.
Replace the connecting wires and
ensure right connection of the
connector.
Ensure correct connection.
Ensure correct connection.
Replace the compressor.
Conclude the work
There is a possibility of defect of
pressure equalizing.
Check the refrigerant circuit.
Defect of pressure equalizing
Check the refrigerant circuit.
Replace the inverter PCB (A2P).
Continue the operation.
(There is a possibility of
instantaneous power failure etc.)
Replace the inverter compressor.
+
The inverter PCB is not
malfunction.
Return the inverter PCB to
original position.
Continue the operation.
U
W
V
Check if the wiring has
any error in mistake for
inverter compressor.
Replace the inverter PCB
(A2P).
Power OFF
Power ON
Power OFF
Power ON
Power OFF