Samsung AR12HSSDPWKNEE Service Manual page 78

10-2-19 Heatsink sensor error/Heatsink over heat
Indoor display
3-LED DISPLAY
LED1 LED2
Outdoor display
LED ON LED BLINKING
1. Checklist :
1) Are there screws assembly in PBA-heatsink?
2) Is the gap PBA-heatsink
3) Is the fan operation normal?
4) Is the cover assembly in control-box normal?
2. Troubleshooting procedure
Restart after power off.
Are there screws in PBA-heatsink?
(4 screws)
Is the fan operation normal?
Exchange the Outdoor PBA
10-22
7-SEG DISPLAY
LED3
LED OFF
YES
YES
E474 Heatsink sensor error
E500 Heatsink Over Temperature Error
Heatsink sensor error
Heatsink Over Temperature Error
NO
Fastening the screw
Check the fan connection
NO
Change the Fan motor
DESCRIPTION
Samsung Electronics