Compressor Motor Lock - Daikin ZQG71~140L7V1B Service Manual

ESIE12-06

4.15 Compressor Motor Lock

E5
Remote
Controller
Display
Applicable
RZQG
Models
Method of Error
Detect the motor lock when the compressor is energized.
Detection
Error Decision
If the motor rotor does not rotate when the compressor is energized.
Conditions
Supposed  Compressor lock
Causes  High differential pressure (2.6 MPa or more) starting
 Stop valve is not opened
Troubleshooting
Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Check the installation conditions.
Is the stop valve open?
YES
Is the UVWN
wiring normal?
YES
Check and see
whether compressor is
short-circuited
or ground.
NO
Is high
differential pressure
starting? (2.6 MPa or
more)
NO
Service Diagnosis
NO
NO
YES
YES
Troubleshooting by Remote Controller
Open the stop valve.
Connect correctly.
Replace the compressor.
Remedy the cause.
Replace the compressor.
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