Daikin SkyAir RZQ200 · 250C7Y1B Service Manual page 159

Diagnosis by Remote Controller
Troubleshooting
148
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Is the stop valve
open?
YES
Is the
lead wire of the compressor
normal?
Are the wiring
and wiring connection
to the compressor
normal?
YES
Power
OFF
The insulation
resistance is low
(i.e., not more than
100 kΩ.)
NO
The
compressor coil is
disconnected.
NO
Check 7
Is contiuity of the power
transistor normal?
NO
Connect the lead wire of the
compressor to restart the
operation.
Malfunction "L8"
recurs.
YES
Check
if the difference
between high pressure
and low pressure
before restart is less
than 0.2 MPa.
YES
NO
NO
NO
YES
YES
YES
NO
NO
SiBE26-701
Open the stop valve.
Replace the lead wire
of the compressor.
Correct the wiring and
wiring connection.
Replace the inverter
compressor (M1C).
Replace the inverter
compressor (M1C).
Replace the outdoor
PC board (A3P).
Continue operation
Defect of pressure
equalizing in the
refrigerant circuit
Check the compressor
(M1C).
Troubleshooting