Compressor Startup Abnormality - Daikin REYQ-XA Service Manual

Troubleshooting by Error Code

3.55 Compressor Startup Abnormality

L9
Error Code
Applicable
All outdoor unit models
Models
Method of Error
Detect error according to the signal waveform of compressor.
Detection
Error Decision When compressor startup operation has not been completed.
Conditions
Supposed
Causes
Troubleshooting
329
The stop valve is not opened
Defective compressor
Error in wire connections to compressor
Large differential pressure before compressor startup
Defective inverter PCB
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
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
SiUS371901E
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.
Service Diagnosis