Daikin RTSQ20PY1 Service Manual page 292

Troubleshooting by Indication on the Remote Controller
Troubleshooting Output current check
Power OFF
∗
281
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
100kΩ 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 P.341.
NO
YES
NO
YES
NO
YES
YES
NO
YES
NO
∗
NO
YES
NO
YES
NO
YES
SiBE31-801_C
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 (A4P).
Continue operation.
Defective pressure
equalizing in the
refrigerant circuit.
Inspection of the
compressor.
Troubleshooting