Samsung RM25 Series Specifications download pdf (Page 64)

DIAGNOSTIC

6-4) If there is a trouble with self-diagnosis(sensor failure)

1) If the ambient temperature sensor has trouble

This model has an ambient temperature sensing operation in the panel PCB. The sensed information is communicated

between main PCB and panel PCB. So you must review the causes of failure without disassembling the panel PCB. If it

displays the sensor ERROR in the parts related to the ambient temperature sensor on the panel, it is understood that the

communication with MAIN PCB is normal. In this case, check the sensor unit, missing wires and short & breaking or wires, etc.

No trouble with PCB and temperature sensor.

Recheck connector for contact failure.

YES

2) If the temperature sensor of Refrigerator has trouble (Apply to the other sensor checks.)

󳀎 See “Circuit Operation” and “How To

Check Temperature sensor” in the

manual. (Check voltage at both sensor

terminals on the upper hinge connector of

freezer, or measure resistance after

disassembling the connector.)

Compare the ambient temp with temp Table

when using the measurement method

described on How To Check Temp

Sensing.

Measure the sensor-connected No. 7  No.8, after

disconnecting wires from the upper hinge connector.

- Error in sensor can be seen on the front display of refrigerator. If sensor failure is found when power is initially impressed to refrigerator, the product will

not work, and display is repeatedly blinking in the trouble occurred sensor.

- Even if sensor has failure during the oeration refrigerator will not stop working but can’t run the normal cooling operation because of being operated in

the Emergency Operation mode. Thus, be sure to follow instructions in the manual when you make self-diagnosis.

Troubleshoot the connector’s contact

failure or missing

Is Main PCB connector(CN50)

inserted correctly?

Is the ambient temperature

sensor normal?

Is the sensor voltage measured at the

upper hinge connector normal?

Start

Replace temperature sensor.

Check the soldering on the main PCB for

shorts & breaks.

YES

󳀎 See Circuit Operation” and

“How To Check Temperature

Sensing” in the manual.

󳀎 See Circuit Operation” and

“How To Check Temperature

Sensing” in the manual.

 

 

 

 

 

 

 

 

  

Exchange the temperature sensor.

Is the unit of refrigerator

sensor normal?

Is Main PCB connector

(CN30) inserted correctly?

Is the insertion sequence

of connector(CN30) wire identical to

the circuit diagram?

Is the input of voltage to Main

MICOM pin No. 57 normal?

Start

Troubleshoot the connector

’s

contact failure or missing

Check the soldering on the main PCB for

shorts & breaks

Correct the wrong configuration of connector

wire-if it is not inserted or incorrectly inserted

to coincid with the circuit diagram.

No trouble with PCB and temperature sensor.

Recheck the connector for an error of contact.

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Samsung RM25 Series Specifications Page 64

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