Samsung AR09TXFCAWKNEU Service Manual page 101

10-2-13 O.C(Over Current) error
Indoor display
7 SEG DISPLAY
C464
Outdoor display
: LAMP ON
1. Checklist :
1) Is the IPM Shunt 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
100
SAMSUNG ELECTRONICS
DESCRIPTION
IPM Over Current(O.C) Error
: LAMP OFF : LAMP BLINK
Restart after power o .
Is the O.C error occurred?
YES
Is the 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?
Is the compressor body
and interphase resistance
insulated?
YES
Exchange the compressor
Current sensor error
Current sensor error
NO
Terminate the service
NO
Connect the comp wire normally
NO
Terminate the service
NO
Restart after returning to the normal load
Is the O.C error
occurred again?
NO Correct the sensor position or
exchange the sensor
NO
Exchange the Outdoor PBA
Terminate the service