Samsung AR09MSPXBWKNEU Service Manual page 69

10-2-2 Indoor temperature sensor Error
Indoor display
7 SEG DISPLAY
E121
: LAMP ON
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
Detach the assembledsensorfromthe PBAsensor
connector and measure thesensor resistancewith
supply power and measure the voltage of #1-#2 in
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SAMSUNG ELECTRONICS
SERVICE MANUAL_EU_INV_Wind Free.indd 68
LED1 LED2 LED3
OPTION TIMER OPTION
: LAMP OFF : LAMP BLINK
ohmmeter(tester)
Is the sensor resistancevalue
10kohm±3% atthe room temperature
of 25°C
YES
Connect the sensor to PBA connector (6piin)
the connector
Below 0.5V orOver4.5V?
NO
Micom erroror connector check
YES
Exchange the indoorPBA
DESCRIPTION
ROOM TH sensor error
NO
Ass'y Sensor Replace
Sensor resistancevalue : 20°C- 12.09kohm
YES
Exchange the indoorPBA
30°C - 8.31kohm
35°C - 6.94kohm
40°C- 5.83kohm
12/14/2016 4:50:35 PM