Daikin REYQ-TA Series Service Manual page 251

SiUS371614E
Troubleshooting
Service Diagnosis
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
melting (No power
applied for a period of 6
hours or more)
NO
Check in Monitor Mode
8-14 ton classes are equipped
with 2 compressors.
Check for the compressor 1 or
2 applicable to the error code
L9 while in monitor mode of
the outdoor unit PCB.
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
Troubleshooting by Error Code
A
Charge a proper amount of
refrigerant.
Open the stop valve.
Eliminate the melting state of
refrigerant.
Eliminate the melting state of
refrigerant.
Connect the leads of the compressor.
Apply power, and then restart
operation.
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