Samsung AR07TXCAAWKNEU, Service Manual

Page: 85 / 109

85
SAMSUNG ELECTRONICS
9-2-13 O.C(Over Current) error
Indoor display
7 SEG DISPLAY DESCRIPTION
C464 IPM Over Current(O.C) Error
Outdoor display
Current sensor error
Current sensor error
: LAMP ON : LAMP OFF : LAMP BLINK
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
Restart after power off.
Is the O.C error occurred?
Is the connection of compressor wire is normal?
Is the O.C error occurred again?
NO
YES
NO
YES
NO
YES
Terminate the service
Connect the comp wire normally
Terminate the service
Is the condition of indoor/outdoor temperature
normal load?
NO
Restart after returning to the normal load
Is the O.C error
occurred again?
Terminate the service
YES
Is the position of
temperature sensor and sensing
value normal?
NO
Is the compressor body
and interphase resistance
insulated?
NO
YES
Correct the sensor position or
exchange the sensor
Exchange the Outdoor PBA
Exchange the compressor