Daikin REYQ8-48PY1B, Service Manual

Page: 337 / 477

SiBE37-701_B Troubleshooting by Indication on the Remote Controller
Troubleshooting 326
Troubleshooting Output current check
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
YES
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
100k
Ω
or below.
Compressor coils
are disconnected.
Check 4
∗
Check if the power transistor
is normal.
Malfunction code
“
L8
” is displayed
again.
Power OFF
NO
NO
NO
YES
YES
NO
YES
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 inverter
PCB (A2P).
Continue the operation.
∗
: Referring to the information on P384. Check 4
Connect the compressor lead
wires then restart the operation.
Check if the pressure difference
between high pressure and low
pressure before restarting is
0.2MPa or below.
YES
YES
NO
Defective pressure
equalizing in the
refrigerant circuit.
Inspection of the
compressor.
YES
YES
NO
NO