Samsung AR09AXKAAWKNEU, Service Manual

Page: 53 / 85

53
9-2-5 Outdoor Cond temperature sensor error
Indoor display
7-SEG DISPLAY DESCRIPTION
C231 Outdoor Cond temperature sensor error
Outdoor display
Outdoor Cond 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 #5-#6
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" 10kohm±3% at the room temperature
of 25 ℃ ?
Connect the sensor to PBA connector supply
power and measure the voltage of “B”
communication cable
Reconnect the sensor connector.
Sensor Replace
Sensor resistance value : 20 - 12.09kohm
30 - 8.31kohm
35 - 6.94kohm
40 - 5.83kohm
Exchange the Outdoor PBA
Below 0.5Vdc or Over 4.5Vdc?
Micom error or connector check
Exchange the Outdoor PBA