Daikin VRV II-Q RQYQ8-48PY1B Service Manual page 154

Troubleshooting by Remote Controller
Troubleshooting
Note:
*1. Disconnect the connector once, then reconnect it and check that it is securely connected.
144
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Are the connectors
of the main PCB, NO
and inverter PCB all
securely connected?
(*1)
YES
Is the type of
NO
the inverter
PCB correct?
YES
The INV. compressor
YES
has insulation
resistance of not more
than 100kΩ.
NO
The fan motor has
YES
insulation resistance
of not more than
1MΩ.
NO
The micro-computer
NO
normal monitor (green) of
the main PCB (A1P) is
blinking.
YES
The micro-computer
NO
normal monitor (green) of
the inverter PCB (A4P) is
blinking.
YES
YES
LC
The " " error recurs.
NO
SiBE341027
Properly connect the connectors.
Replace it with a correct PCB.
Replace the INV. compressor
(M1C).
Replace the fan motor.
LC
Not the " " error. Check the error
code again.
Replace the inverter PCB (A4P).
Replace the main PCB (A1P).
Continue the operation.
(It is supposed that the error
results from causes such as
instantaneous power failure.)
Service Diagnosis