Samsung AR18NSFPEWQNEU, Service Manual

Page: 63 / 105

Samsung Electronics 10-9
10-2-8 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
YES
Exchange the Outdoor PBA
YES
Exchange the Outdoor PBA
NO
NO
NO
Is the sensor resistance value
"(#3-#4)" 200kohm±3% at the room temperature
of 25
Is the sensor connector("CN251")
connected correctly in accordance
with a color?
YES
YES
Is the connection of power cable
and communication cable normal?
Sensor Replace
Sensor resistance value 20 - 242kohm
30 - 166ohm
35 - 138ohm
40 - 115kohm
Reconnect the sensor connector.
Connect the sensor to PBA connector
supply power and measure the voltage of
"(#3-#4)"in the connector
Below 0.5Vdc or Over 4.5Vdc?
Micom error or connector check