Daikin VRV III-S RXYMQ36 48PVJU Service Manual page 174

SiUS34-907
Troubleshooting
Caution
Be sure to turn off the power switch before connecting or disconnecting the connector, or parts may be damaged.
compressor lead wires
wiring and connection to
Power OFF
Insulation resistance
of the compressor is 100 kW
coils are disconnected.
Check if the power transistor
Connect the compressor lead wires
then restart the operation.
L8
"
difference between high
pressure and low pressure
: Refer to the information on P.213.
CHECK 4
Troubleshooting
Check if the
stop valve is open.
YES
Check if the
are normal.
YES
Check if the
the compressor are
normal.
YES
or below.
NO
Compressor
NO
CHECK 4
is normal.
YES
Malfunction code
" is displayed again.
YES
Check if
the pressure
before restarting is
29 psi or
below.
YES
Troubleshooting by Indication on the Remote Controller
NO
NO
NO
YES
YES
NO
NO
NO
Open the stop valve.
Replace the compressor lead
wires.
Correct the wiring and
connection.
Replace the inverter
compressor.
Replace the inverter
compressor.
Replace the main PCB (A1P).
Continue operation.
Defective pressure equalizing in
the refrigerant circuit.
Inspection of the compressor.
165