Sunlight Supply Samsung Programmable Thermostat for Split Systems - Manual (Page 77)

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Outdoor Discharge temperature sensor error
Indoor display ሱ ل ሱ Outdoor error
Outdoor display ሱ ሱ 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