Daikin RTSQ20PY1 Service Manual page 290

Troubleshooting by Indication on the Remote Controller
Troubleshooting Compressor inspection
Power OFF
∗
279
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.
Failure occurs again
after restarting the
unit.
CHECK 4
: Referring to the information on P.341.
NO
YES
NO
YES
NO
YES
YES
NO
YES
NO
∗
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.
Momentary power
failure is possible.
Replace the inverter
compressor.
Troubleshooting