Samsung AR18NSFPEWQNEU, Service Manual

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10-4 Samsung Electronics
10-2-3 Indoor Eva-in temperature sensor error
Indoor display
3-LED DISPLAY 7-SEG DISPLAY DESCRIPTION
LED1 LED2 LED3
E122,E123 Indoor MID, Indoor IN PIPE-TH sensor error
◎ ◎ {
O
LED ON
◎
LED BLINKING
{
LED OFF
1. Checklist :
1) Is the indoor units temperature sensor connected correctly?
2) Is the sensor placed correctly?
3) Does the both terminal of sensor satisfy the resistance value in accordance with temperature?
2. Troubleshooting procedure
YES
Exchange the indoor PBA
YES
Exchange the indoor PBA
NO
NO
Is the sensor resistance value
#3-#4 and #5-#6 10kohm±3% at the room
temperature of 25 ఁ
YES
Detach the assembled sensor from the PBA sensor
connector and measure the sensor resistance with
ohmmeter(tester)
Is the connection of power cable
and communication cable normal?
Sensor Replace
Sensor resistance value : 20°C- 12.09kohm
30°C - 8.31kohm
35°C - 6.94kohm
40°C- 5.83kohm
Connect the sensor to PBA connector (6piin)
supply power and measure the voltage of #3-#4
and #5-#6 in the connector
Below 0.5V or Over 4.5V?
Micom error or connector check