Samsung AR09RXPXBWKNEU, Service Manual, Page: 98 / 128

98
10-2-6 Outdoor Discharge temperature sensor error
Indoor display
3-LED DISPLAY
7-SEG DISPLAY DESCRIPTION
LED1 LED2 LED3
◎ ◎
E251 Outdoor Discharge temperature sensor error
Outdoor display
◎ ◎
Outdoor Discharge temperature sensor error
●
LED ON
◎
LED BLINKING
LED OFF
1. Checklist :
1) Is the sensor connected correctly?
2) Is the sensor placed correctly?
3) Does the both terminal of sensor satisfy the resistance value in accordance with temperature?
4) Is the resistance value of sensor connection pull-up correct?
2. Troubleshooting procedure
Model “A” “B”
ALL CN251 CN251 #1-#2
YES
YES
NO
NO
NO
YES
YES
Is the sensor connector(“A”) connected
correctly in accordance with a color?
Is the sensor resistance value
“B” 200kohm±3% at the room temperature
of 25 ℃ ?
Reconnect the sensor connector.
Sensor Replace
Sensor resistance value : 20 - 242kohm
30 - 166ohm
35 - 138ohm
40 - 115kohm
Exchange the Outdoor PBA
Connect the sensor to PBA connector supply
power and measure the voltage of "B"in the
connector
Below 0.5Vdc or Over 4.5Vdc?
Micom error or connector check
Exchange the Outdoor PBA