Daikin REYQ8-48PY1B, Service Manual

Page: 339 / 477

SiBE37-701_B Troubleshooting by Indication on the Remote Controller
Troubleshooting 328
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
NO
YES
Go on to the next page.
(Starting failure due to aged operation.)
YES
NO
While in monitor mode, check
whether the system is right-
hand (control PCB 1) or left-
hand (control PCB 3).
Individual system
Is the individual
system applied to the
outdoor unit?
Multi system
While in monitor mode,
check the outdoor unit
concerned.
Check if it is the first
time to start after
installation.
Check if a right
amount of refrigerant
is charged.
Charge a right amount of
refrigerant.
Check if the stop
valve is open.
Check if the insulation
resistance of the compressor
is more than 100k
Ω
.
NO
YES
Refrigerant is sleeping.
(The unit is out of
power supply for more
than 6 hours.)
Check if the
compressor lead
wires are
disconnected.
YES
NO
YES
NO
NO
YES
YES
NO
Open the stop valve.
Cancel the sleeping state of
refrigerant.
Cancel the sleeping state of
refrigerant.
Fix the compressor lead wire.
Correct the wiring then supply the
power to restart.