Sunlight Supply Samsung Programmable Thermostat for Split Systems User Manual

Page 71

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12-4

Indoor Eva-in temperature sensor error

Indoor display

ل

Indoor

Eva-in

temp

sensor

error

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

Is the sensor resistance value #3-#4

10kohm±3% at the room

temperature of 25

ć

Detach the assembled sensor from the PBA sensor
connector and measure the sensor resistance with

ohmmeter(tester)

Sensor Replace

Sensor resistance value : 20

ć - 12.09kohm

30

ć - 8.31kohm

35

ć - 6.94kohm

40

ć - 5.83kohm

Below 0.5V or Over 4.5V?

Connect the sensor to PBA connector (4piin)

supply power and measure the voltage of #3-#4 in

the connector

Exchange the indoor PBA

NO

YES

NO

YES

Micom error or connector check

Exchange the indoor PBA

YES

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