Samsung AM030RXMDEH/EU Service Manual page 42

Troubleshooting
IPM over current error (Error Code : E464) (cont.)
Is the service valve completely open?
Are the compressor
wires correctly connected to
the compressor?
Check the compressor
1. Is resistance value between phases of
the compressor same? (U ↔ V, U ↔W, V ↔W)
2. Is the wire connected to compressor normal?
(disconnection, wrong connection)
3. Is there any noise when
the compressor rotates?
Is the resistance between
compressor body and chassis MegaΩ?
Is the location and
measured value of the
temperature sensor normal?
42
Cont.
Yes
Yes
Yes
Yes
Cont.
No
No
Check the connection of the compressor
1. Change the compressor: When the resistance
value between phases of the compressor is
different → Turn the power on → Check for
normal operation → End service
No
2. Reassemble wire: When the wire connection of
the compressor is wrong → Turn the power on
→ Check for normal operation → End service
3. Change the compressor: When loud abnormal
noise generates (such as metal grinding), or
severe vibration
No
Replace the compressor.
No
Turn off the power and change the location
of the temperature sensor or replace it
Open the valve
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