Daikin VRV-WIII RWEYQ72PTJU Service Manual page 213

SiUS30-1301
Troubleshooting
Output current check
Service Diagnosis
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Is the stop valve
Check if the
compressor lead wires
are normal.
the wiring and
connection to the
compressor are
Power OFF
resistance of the
compressor is 100 kΩ
Compressor
coils are disconnected.
Check if the power
transistor is normal.
Connect the compressor
lead wires then restart the
operation.
Error code
L8
"
the pressure
difference between
high pressure and low
pressure before
restarting is 29 psi
CHECK 4 Refer to P.244.
Troubleshooting by Indication on the Remote Controller
NO
open?
YES
NO
YES
Check if
NO
normal.
YES
Insulation
YES
or below.
NO
YES
NO
CHECK 4
NO
YES
NO
" is displayed
again.
YES
Check if
NO
or below.
YES
Open the stop valve.
Replace the compressor
lead wires.
Correct the wiring and
connection.
Replace the inverter
compressor.
Replace the inverter
compressor.
Replace the inverter
PCB.
Continue the operation.
Defective pressure
equalizing in the
refrigerant circuit.
Inspection of the
compressor.
205