Samsung AVMKH020EA4 Service Manual page 196

11-2-6 MCU temperature sensor OPEN/SHORT Error
Outdoor unit display
Indoor unit display
Judgment method
Causes
Is not the MCU temperature
sensor connector separated from
Disconnect the MCU temperature sensor con-
nector from PCB and measure the resistance
value between the 2 terminals.
Is not the resistance
value out of range from the
temperature table?
Restart after exchanging PCB.
Samsung Electronics
- Disconnection and short of MCU temperature sensor
PCB?
Yes
Yes
Yes
No
Restart after connecting a connector to PCB.
No
It is the self-error of MCU temperature
sensor. Replace it.
Troubleshooting
11-10