Samsung AQ09VFUAGM/CV Service Manual page 77

Outdoor Discharge temperature sensor error
Indoor display
Outdoor display
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?
Is the sensor connector(CN251)
connected correctly in accordance
with a color(BLU,6PIN)?
YES
Is the sensor resistance value #3-#4
200kohm±3% at the room
temperature of 25
YES
Connect the sensor to PBA connector (6piin)
supply power and measure the voltage of #3-#4 in
the connector
Below 0.5V or Over 4.5V?
NO
Micom error or connector check
YES
Exchange the Outdoor PBA
Is the sensor connector(CN502)
connected correctly in accordance
with a color(red,4pin)?
YES
Is the sensor resistance value #3-#4
200kohm±3% at the room
temperature of 25
YES
Connect the sensor to PBA connector(4pin)
supply power and measure the voltage of #3-#4 in
the connector
Below 0.5V or Over 4.5V?
NO
Micom error or connector check
YES
Exchange the Outdoor PBA
12-1 0
Outdoor error
Outdoor Discharge temperature
error
NO
NO
YES
NO
NO
YES
sensor
Reconnect the sensor connector.
Sensor Replace
Sensor resistance value : 20 - 242kohm
30 - 166ohm
35 - 138ohm
40 - 115kohm
Exchange the Outdoor PBA
Reconnect the sensor connector.
Sensor Replace
Sensor resistance value : 20 - 242kohm
30 - 166ohm
35 - 138ohm
40 - 115kohm
Exchange the Outdoor PBA