How many ohms should a refrigerator thermistor read?

It should read around 16.6 K ohms or 16,600 ohms +/-5%. If you don’t own an ohmmeter or are unsure how to properly use it, replace the thermistors if you suspect they are bad.

How do you bypass Norcold thermistor?

On most models, the thermistor has two wires running from it over to the inside compartment light. Near the light is a four wire electrical connection plug. Unplug this electrical connection. It will disable the light and also bypass the thermistor.

How do you test a thermistor with a multimeter?

Connect the multimeter terminals to the thermistor leads. Polarity is not an issue here. Now heat the thermistor by moving your heated soldering iron tip to it. Now you can see the multimeter reading smoothly increases or decreases depending on whether the thermistor under test is PTC or NTC.

Should thermistor have continuity?

The thermistor that you are asking about is a negative temperature coefficient sensor. It should always measure continuity. The resistance of this sensor is used by the control board to determine temperature. At room temperature, the resistance of the thermistor is normally about 12K ohms (12,000 ohms).

Where is the thermistor on a Norcold refrigerator?

Proper location for the thermistor is on the 5th fin on the cooling fins at the back of the refrigerated cabinet.

How do you check if a thermistor is working?

When you apply heat to the body of a thermistor, its resistance should begin to steadily decline within seconds after heat is applied. If the NTC thermistor follows this behavior, then it is good. If it does not, it is faulty and should be discarded.

What is a Norcold thermistor and why is it important?

Posted on July 28, 2015. Norcold thermistors are very important to the operation of your Norcold refrigerator. The word “thermistor” means combination thermostat/ resistor. Simply put, this means that as the temperature increases or decreases, so does the resistance of the component.

What is the temperature coefficient of resistance of a thermistor?

The temperature coefficient of resistance or alpha (∝) of a thermistor is defined as the ratio of the rate of change of resistance with temperature to the resistance of the thermistor at a specified temperature (T), as shown by the following expression: Where T = temperature in Kelvin and R = Resistance in Ohms at temperature T.

What is the R/T relationship of an NTC thermistor?

NTC temperature thermistors have a negative electrical resistance versus temperature (R/T) relationship. The relatively large negative response of an NTC thermistor means that even small changes in temperature can cause significant changes in their electrical resistance.

What does thermistor mean on a thermostat?

The word “thermistor” means combination thermostat/ resistor. Simply put, this means that as the temperature increases or decreases, so does the resistance of the component. This makes troubleshooting the thermistor a fairly easy task as long as you have a multimeter capable of checking resistance (ohms).