Outdoor Discharge Temperature Sensor Error - Samsung AQV18UGAX Service Manual

12-2-9.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?
Isthe sensor connector(CN251)
2-1. Troubleshooting procedure (ASV18P**)
connected correctly in accordance
with a color(BLU,6PIN)?
Isthe sensor resistance value #3
200kohm ± 3% at the room
temperature
of 25 ℃
Connectthe sensor to PBA connector (6piin)
supply power and measure the voltage of #3
the connector
Below 0.5V or Over 4.5V?
Micom error or connector check
Exchangethe Outdoor PBA
Isthe sensor connector(CN502)
connected correctly in accordance
with a color(red,4pin)?
Isthe sensor resistance value #3
2-2. Troubleshooting procedure (ASV24P**)
200kohm ± 3% at the room
temperature
of 25 ℃
Connectthe sensor to PBA connector(4pin)
supply power and measure the voltage of #3
the connector
Below 0.5V or Over 4.5V?
Micom error or connector check
Exchangethe Outdoor PBA
12-10
⊙ ○ ⊙ Outdoor error
Outdoor
⊙ ⊙ ○
error
YES
-#4
YES
-#4 in
NO
YES
YES
-#4
YES
-#4 in
NO
YES
Discharge temperature
NO
NO
YES
NO
NO
YES
sensor
Reconnect the sensor connector.
Sensor Replace
Sensorresistance value : 20 ℃ - 242kohm
30℃ - 166ohm
35℃ - 138ohm
40℃ - 115kohm
Exchangethe Outdoor PBA
Reconnect the sensor connector.
Sensor Replace
Sensorresistance value : 20 ℃ - 242kohm
30℃ - 166ohm
35℃ - 138ohm
40℃ - 115kohm
Exchangethe Outdoor PBA