Daikin RXYQ96PYDN Service Manual page 414

SiUS34-801A_b
Troubleshooting
Output current check
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
Check if the
wiring and connection to
the compressor are
Power OFF
Insulation
resistance of the compressor
is 100 kΩ or
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.
pressure difference between high
pressure and low pressure before
restarting is 29psi
∗
Check 4
: Referring to the information on P463.
Troubleshooting by Indication on the Remote Controller
NO
YES
NO
normal.
NO
normal.
YES
below.
YES
∗
NO
YES
NO
YES
Check if the
NO
or below.
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.
399