Daikin VRV III REYQ8PY1 Service Manual page 302

Si37-701
Troubleshooting Output current check
Power OFF
∗
Troubleshooting
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Check if the
stop valve is open.
Check if the
compressor lead wires are
normal.
Check if the
wiring and connection to
the compressor are
normal.
Insulation
resistance of the compressor
is 100 kΩ or
below.
Compressor coils are
disconnected.
Check 4
Check if the power transistor
is normal.
Connect the compressor lead
wires then restart the operation.
Malfunction code
L8
" " is displayed again.
Check if the
pressure difference between high
pressure and low pressure before
restarting is 0.2MPa
or below.
Check 4 : Referring to the information on P349.
Troubleshooting by Indication on the Remote Controller
NO
YES
NO
NO
YES
YES
∗
NO
YES
NO
YES
NO
YES
Open the stop valve.
Replace compressor
lead wires.
Correct the wiring and
connection.
Replace the inverter
compressor.
Replace the inverter
compressor.
Replace the inverter
PC board (A2P).
Continue operation.
Defective pressure
equalizing in the
refrigerant circuit.
Inspection of the
compressor.
291