If you have ever experienced issues with your refrigerator, you know how frustrating it can be. One common problem many refrigerator owners encounter is a malfunctioning thermistor. The thermistor is a temperature-sensing device that plays a crucial role in maintaining the proper temperature inside your refrigerator. When it stops working, it can lead to problems such as inaccurate temperature readings or even a complete shutdown of the cooling system. In this article, we will guide you through the process of troubleshooting and bypassing a refrigerator thermistor.
The Importance of a Functioning Thermistor
Before we delve into the troubleshooting process, let’s understand why a functioning thermistor is crucial for the proper functioning of your refrigerator. The thermistor is responsible for sensing the temperature inside your fridge and relaying that information to the control board. Based on the data received from the thermistor, the control board adjusts the cooling system to maintain the desired temperature.
Signs of a Faulty Thermistor
There are a few common signs that indicate a problem with your refrigerator’s thermistor. If you notice any of the following symptoms, there is a good chance that your thermistor needs troubleshooting or replacement:
1. Inaccurate temperature readings: If your refrigerator’s temperature display does not match the actual temperature inside, it may be due to a faulty thermistor.
2. Failure to cycle on and off: The thermistor plays a vital role in signaling the cooling system to turn on and off. If your refrigerator constantly runs or fails to cool properly, it could be a result of a malfunctioning thermistor.
3. Frequent temperature fluctuations: A malfunctioning thermistor may cause the temperature inside your refrigerator to fluctuate dramatically, compromising the freshness and longevity of its contents.
Troubleshooting the Thermistor
Before considering bypassing the thermistor, it is essential to troubleshoot the device to determine if it is the root cause of the problem. Follow these steps to troubleshoot your thermistor:
1. Locate the thermistor: The thermistor is usually found attached to the evaporator coil or near the air damper inside the refrigerator. Refer to your refrigerator’s user manual for its exact location.
2. Inspect for physical damage: Examine the thermistor for any signs of physical damage, such as frayed wires or loose connections. If you notice any damage, the thermistor may need replacement.
3. Test the resistance: Using a multimeter set to the resistance setting, disconnect the thermistor and measure its resistance. Consult your refrigerator’s manual for the recommended resistance values. If the measured resistance falls outside the specified range, the thermistor is likely faulty and requires replacement.
Bypassing the Thermistor
If you have confirmed that the thermistor is indeed faulty and need a temporary solution, bypassing the thermistor might be an option. However, keep in mind that bypassing the thermistor will prevent the control board from receiving accurate temperature readings, potentially compromising the performance of your refrigerator.
Gather the necessary tools and materials
Before attempting to bypass the thermistor, gather the following tools and materials:
1. Wire cutters/strippers: You will need these to cut and strip the necessary wires.
2. Electrical tape: This will be used to secure the connections.
3. A wire: Choose a suitable gauge wire to connect the identified pins together.
Disconnect the thermistor
Begin the bypassing process by disconnecting the thermistor from its connection points. Carefully remove any plastic coverings or wire harnesses to access the thermistor’s wiring.
Identify the wiring
Locate the wiring diagram provided in your refrigerator’s manual. Identify the two pins or wires connected to the thermistor. These are the pins you will need to connect to bypass the thermistor.
Connect the wires
Using the wire cutters/strippers, cut a suitable length of wire to connect the identified pins together. Strip the ends of the wire to expose the metal, ensuring a clean connection. Connect one end of the wire to the first pin and the other end to the second pin, securely fastening them together.
Secure the connections
To ensure a reliable connection, wrap each connection point with electrical tape, covering the exposed metal. This will prevent any accidental contact and potential electrical hazards.
Test and monitor
Once the bypass is complete, plug in your refrigerator and turn it on. Monitor the temperature over time to ensure it is within the desired range. Be aware that without a functioning thermistor, the temperature control may not be as accurate.
Seek Professional Assistance if Needed
Bypassing a thermistor should only be considered as a temporary solution. It is always recommended to seek professional assistance to replace or repair a faulty thermistor. Doing so will ensure that your refrigerator functions optimally and prevent any further damage to the cooling system.
In conclusion, troubleshooting and bypassing a refrigerator thermistor can be a temporary solution to resolve issues with your cooling system. However, it is essential to recognize the limitations of bypassing and seek professional assistance if needed. Remember to always prioritize safety and consult your refrigerator’s user manual for specific instructions and guidelines.