Sunlight Supply Samsung Programmable Thermostat for Split Systems User Manual

Page 77

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12-1

0

Outdoor Discharge temperature sensor error

Indoor display

ل

Outdoor error

Outdoor display

ل

Outdoor

Discharge

temperature

sensor

error

1.Checklist :
1) Is the sensor 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?

Is the sensor resistance value #3-#4

200kohm±3% at the room

temperature of 25

ć

Sensor Replace

Sensor resistance value : 20

ć - 242kohm

30

ć - 166ohm

35

ć - 138ohm

40

ć - 115kohm

NO

YES

YES

YES

Is the sensor connector(CN251)

connected correctly in accordance

with a color(BLU,6PIN)?

Reconnect the sensor connector.

NO

Below 0.5V or Over 4.5V?

Connect the sensor to PBA connector (6piin)

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

the connector

Exchange the Outdoor PBA

NO

Micom error or connector check

Exchange the Outdoor PBA

YES

Is the sensor resistance value #3-#4

200kohm±3% at the room

temperature of 25

ć

Sensor Replace

Sensor resistance value : 20

ć - 242kohm

30

ć - 166ohm

35

ć - 138ohm

40

ć - 115kohm

NO

YES

YES

YES

Is the sensor connector(CN502)

connected correctly in accordance

with a color(red,4pin)?

Reconnect the sensor connector.

NO

Below 0.5V or Over 4.5V?

Connect the sensor to PBA connector(4pin)

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

the connector

Exchange the Outdoor PBA

NO

Micom error or connector check

Exchange the Outdoor PBA

YES

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