Samsung AR09RXPXBWKNEU, Service Manual, Page: 105 / 128

105
10-2-13 O.C(Over Current) error
Indoor display
3-LED DISPLAY
7-SEG DISPLAY DESCRIPTION
LED1 LED2 LED3
◎ ◎
E464 IPM Over Current(O.C) Error
Outdoor display
◎
IPM Over Current(O.C) Error
●
LED ON
◎
LED BLINKING
LED OFF
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
NO
NO
NO
NO
YES
YES
YES
YES
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?
Is the condition of indoor/outdoor
temperature normal load?
Terminate the service
Connect the comp wire normally
Terminate the service
Restart after returning to the normal load
Is the O.C error
occurred again?
Terminate the service