O.c(Over Current) Error - Samsung AQV18UGAX Service Manual

12-2-14. O.C(Over Current) error

Indoor display ⊙
Outdoor display ○
1.Checklist :
1) Is the IPM Shunt(ASV18P**:R451,R452,R453,ASV24P**: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
Restart after power off.
Is the O.C error occurred?
YES
Isthe connection of compressor
wire is normal?
YES
Is the O.C error occurred again?
YES
Is the condition of indoor/outdoor
temperature normal load?
YES
Is the position of temperature
sensor and sensing value normal?
YES
Is the compressor body and
interphase resistance insulated?
NO
Exchangethe compressor
○ ⊙ Outdoor error
○ ⊙ Comp starting error
NO
YES
NO
NO
Terminatethe service
NO
Connectthe comp wire normally
NO
Terminate the service
Restart after returning to the normal load
Is the O.C error
occurred again?
Correct the sensor position or exchange the sensor
YES
Exchange the Outdoor PBA
NO
Terminatethe
service
12-15