Samsung AQ09VFUAGM/CV, Service Manual

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12-
8
Outdoor temperature sensor error
Indoor display ሱ ل ሱ Outdoor error
Outdoor display ሱ ل ሱ
Outdoor temperature sensor
error
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?
2-1. Troubleshooting procedure (A*V18***)
Is the sensor resistance value #1-#2
10kohm±3% at the room
temperature of 25 ć
Sensor Replace
Sensor resistance value : 20 ć - 12.09kohm
30
ć
- 8.31kohm
35
ć
- 6.94kohm
40 ć - 5.83kohm
NO
YES
YES
YES
Is the sensor connector(CN251)
connected correctly in accordance
with a color(BLU,6PIN)?
Reconnect the sensor connector.
NO
Below 0.5V or Over 4.5V?
Connect the sensor to PBA connector (6pin)
supply power and measure the voltage of #1-#2 in
the connector
Exchange the Outdoor PBA
NO
Micom error or connector check
Exchange the Outdoor PBA
YES
Is the sensor resistance value #1-#2
10kohm±3% at the room
temperature of 25
ć
Sensor Replace
Sensor resistance value : 20 ć - 12.09kohm
30
ć
- 8.31kohm
35
ć
- 6.94kohm
40 ć - 5.83kohm
NO
YES
YES
YES
Is the sensor connector(CN502)
connected correctly in accordance
with a color(RED,4pin)?
Reconnect the sensor connector.
NO
Below 0.5V or Over 4.5V?
Connect the sensor to PBA connector(4pin)
supply power and measure the voltage of #1-#2 in
the connector
Exchange the Outdoor PBA
NO
Micom error or connector check
Exchange the Outdoor PBA
YES