Samsung Electronics; Outdoor Temperature Sensor Error - Samsung AC026MNJDKH/EU Service Manual

4-4-2 Outdoor temperature sensor error

1. 1.Checklist :
1) Is the cable between the indoor unit and outdoor unit 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?
4-4-2-1. Troubleshooting procedure (PF2)
Is the sensor connector(CN251) connected
correctly in accordance with a color(BLU,6PIN)?
Is the sensor resistance value #1-#2
10kohm±3% at the room temperature
of 25°C
Connect the sensor to PBA connector (6pin)
supply power and measure the voltage of
#1-#2 in the connector
Below 0.5V or Over 4.5V?
Micom error or connector check
Exchange the Outdoor PBA
4-24
Yes
Yes
No
Yes
No
Reconnect the sensor connector.
Sensor Replace
No
Sensor resistance value : 20°C - 12.09kohm
Yes
Exchange the PBA of no power unit
30°C - 8.31kohm
35°C - 6.94kohm
40°C - 5.83kohm

Samsung Electronics