Ipm And Over Current Error - Samsung JH035EAV Series Service Manual

Troubleshooting Operating Instructions and Installation

4-3-9 IPM and over current error

1. Inspection items
1) Is refrigerant filled?
2) Is the compressor operating without a problem?
3) Is the compressor connected properly?
4) Are there any obstacles around the indoor/outdoor units?
2. Inspection order
Are outdoor/indoor units
installed correctly?
Are screws fasten in PBA?
(IPM, DIODE, B/D, IGBT)
Is service valve completely opened?
Is the compressor
connection line properly connected to the
compressor?
Are the values for
current sensing resistance within
R418-19m -21m
Is resistance value of the
different compressor phases
(U V, V W, W U)
less than 2Ω?
Continue
4-20
Yes
Yes
Yes
Yes
Yes
Yes
No
Reinstall after removing obstacles
No
Tighten the screws firmly
No
No
Check the connection status of the compressor
No
Resistance replacement
No
Compressor replacement
Open valves
(continued on the back)
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