4-38
Samsung Electronics
4-4-9 O.C(Over Current) error
1.Checklist :
1) Is the IPM Shunt(PF2:R451,R452,R453,PF3:R413,R414,R415) resistance value correct? Check the resistor is opened
2) Is the condition of surrounding temperature abnormal overload?
3) Is there any problem as like the temperature sensor separation or measurement value error?
4) Is the interphase resistance of compressor normal?
2. Troubleshooting procedure
Is the O.C error occurred?
Is the connection of compressor wire is
normal?
No
No
Yes
No
No
No
No
No
Yes
Exchange the Outdoor PBA
Correct the sensor position or exchange the
sensor
Is the O.C error
occurred again?
Terminate the service
Restart after returning to the normal load
Terminate the service
Connect the comp wire normally
Terminate the service
Is the restart error occurred again?
Is the condition of indoor/outdoor
temperature normal load?
Is the position of temperature sensor and
sensing value normal?
Is the compressor body and interphase
resistance insulated?
Exchanged the Compressor
Restart after power off.
Yes
Yes
Yes
Yes
Yes
