Daikin RXQ12AHR Service Manual page 256

Troubleshooting by Error Code
Troubleshooting
250
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Startup for
the first time after
installation?
YES
Is a proper
amount of refrigerant
charged?
YES
Is the stop valve
open?
YES
Refrigerant
is stagnated.
(The unit is out of power
supply for more than 6
hours.)
NO
Check in Monitor Mode
For the models equipped with
2 compressors, check the
compressor M1C or M2C
applicable to the error code L9
while in monitor mode of the
outdoor unit.
Is the
insulation
resistance of the relevant
compressor 100 kΩ
or more?
YES
Are the
leads of the
compressor
disconnected?
NO
NO
NO
NO
YES
NO
YES
SiAF341904E
A Go to the next page
Charge a proper amount of
refrigerant.
Open the stop valve.
Solve the refrigerant stagnation.
(Power should be supplied for more
than 6 hours.)
Solve the refrigerant stagnation.
(Power should be supplied for more
than 6 hours.)
Connect the leads of the compressor.
Apply power, and then restart
operation.
Part 6 Service Diagnosis