Daikin RMXS-L Series, Руководство по обслуживанию

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SiUS181305E Troubleshooting for Outdoor Unit
Troubleshooting 188
7.4 Compressor Motor Lock
Error Code
E5
Method of Error
Detection
The position signal is taken from UVW line, and the malfunction is detected when any abnormality
is observed in the phase-current waveform.
Error Decision
Conditions
When the compressor motor does not start up even in forced startup mode
Supposed
Causes

Compressor lock

High differential pressure (0.5 MPa (167 ftAq) or more)

Incorrect UVW wiring

Defective outdoor unit PCB

Stop valve is left closed.
Troubleshooting
Check the installation
conditions.
Is the stop valve
open?
Are the UVW
wirings normal?
Is high
differential
pressure starting? (0.5
MPa (167 ftAq)
or more)
Are
inverter output
voltages the same for 3
phases?
Does
low or high
pressure vary even
instantaneously when
restarting
compressor?
Check
and see whether
the compressor is short
circuited or
grounded.
Open the stop valve.
Connect them correctly.
Remedy the cause.
Replace the compressor.
Replace the main PCB
(A1P).
Replace the compressor.
(R19093)
NO
YES
YES
NO
Grounded
YES
NO
YES
Short circuited
NO
YES
NO
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.