
Samsung Electronics20
6-3 Breakdown diagnosis by symptoms
6-3-1 Indoor unit temperature sensor failure
Indoor unit temperature sensor open or short
Error mark
Error Part
7-SEGMENT
E1
Yes
No
No
No
Yes
Yes
Detach the assembly sensor from the ASS'Y PCB
CN43 connector and measure the sensor resistance
with an ohmmeter (tester).
Is the sensor resistance value 10KΩ ±1,2KΩ at the
room temperature of 25˚C?
ASS'Y Sensor Replace
SENSOR Resistance Value : 20˚C-12.09kΩ
SENSOR Resistance Value : 30˚C-8.31kΩ
SENSOR Resistance Value : 35˚C-6.94kΩ
SENSOR Resistance Value : 40˚C-5.83kΩ
Poor ASS'Y PCB Replace
Poor ASS'Y PCB Replace
Connect the sensor to CN43, supply power, and measure
the voltage of #1 and #2 of the CN43 connector.
Below 1.3V?
Over 3.7V?
MICOM Error, MICOM Replace
DB98-17813(1)_1 04/2/23 10:31 AM Page 20
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