Daikin RXQ12AHR, Руководство по обслуживанию

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SiAF341904E Troubleshooting by Error Code
Part 6 Service Diagnosis 223
5.25 Inverter Compressor Motor Lock
Applicable
Models
All outdoor unit models
Error Code
E5
Method of Error
Detection
Inverter PCB takes the position signal from UVW line connected between the inverter and
compressor, and the error is detected when any abnormality is observed in the phase-current
waveform.
Error Decision
Conditions
When the inverter compressor motor does not operate even by starting it in forced startup
mode.
Supposed
Causes
 Inverter compressor lock
 High differential pressure (0.5 MPa or more)
 UVW connection error
 Defective inverter PCB
 The stop valve is not opened.
Troubleshooting
Make proper wire connections.
Make proper wire connections.
NO
NO
NO
NO
YES
YES
YES
YES
Power OFF
Is the
connection line
of the relevant
compressor
normal?
Are wire
connections
made to phases U, V
and W in the proper
order and
manner?
Are wire
connections
made according
to the wiring
diagram?
Is the stop
valve open?
For the models equipped with 2
compressors, check the
compressor M1C or M2C applicable
to the error code
E5 while in
monitor mode of the outdoor unit.
Replace the connection line,
and then securely connect the
connector.
Field factor
Open the stop valve.
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
A
Check for the connection wiring.
• For compressor M1C
• For compressor M2C
Check in Monitor Mode
Go to the next page
U
V
W