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How do I replace an Electronic Control Board in a Top-Mount Refrigerator?

In the machine compartment next to the compressor, the drain tube is used to transfer the water from the evaporator to the drain pan, where it can evaporate. If the drain tube is damaged, the water won't drain from the tray and will overflow into the freezer or refrigerator compartment. If the drain tube is damaged you should replace it.

The bi-metal thermostat-trips, also known as the refrigerator defrost sensor, are used to detect when the temperature of the evaporator is getting hot enough to cause overheating. The power was cut off when the sensor tripped. frost builds up on the evaporator fins of the refrigerator and freezer if the defrost sensor trips. To check the sensor for continuity, you can use the volt-ohm meter. If the sensor doesn't show continuity at 0 degrees F, replace it.

The electronic control board controls the compressor and the defrost cycle. When it senses that the compressor needs to run to keep the fridge cool, it sends power to the compressor and fans. The electronic control board receives signals from the temperature sensors in the fridge and freezer. The control board has this information. You can do a diagnostic test on the electronic control board to see how well it works. The most common test is the Forced Defrost test. Instructions on running the diagnostics can be found in the tech sheet. If the control board is malfunctioning, you should replace it.

The fan is on the assembly. The air is moved through the cabinet for cooling. If the fan is malfunctioning, replace it.

The frost from the evaporator is melted by the refrigerator automatic defrost system. The compressor stops, the heating element turns on, and the frost starts to melt. There is a drain pan next to the compressor in the machine compartment where the condensate flows through a drain tube. The water left the drain pan before the next thaw. Diagnostic and repair the problem if the defrost process fails.

The intervals between automatic defrost cycles in the refrigerator is controlled by the defrost timer. The control components in the device are moved by the motor of the defrost timer. When the control contacts in the defrost timer advance into the defrost cycle, the compressor stops and the defrost heater turns on for a period of time to melt frost off of the evaporator fins. This encourages more efficient exchange of heat. When the period of defrost ends, the defrost timer contacts switch back to allow normal cooling in the fridge.

There are ice makers and/or water dispensers in many refrigerators. A water leak can be caused by the broken water line in the refrigerator. Water lines inside the refrigerator are being replaced.

When the door is shut, the gasket on the fridge or freezer door prevents air from entering or escaping the cabinet. When the door is closed, a damaged gasket lets warm, moist air into the fridge. The door seal should be replaced if it's damaged.

Follow these steps to fix your issue:

  1. Remove creases in the new door gasket

    If you want to smooth out the folds in the door gasket, soak it in warm water and dry it with a towel. Carefully warm it with a hair dryer or heat gun. It's important to not melt the gasket. The door gasket expands when heating it. If the gasket seems too big for the door after heating, it's a good idea to cool it.

  2. Remove the refrigerator door gasket

    Shut off the circuit breaker for the fridge or turn it off. The gasket needs to be pulled out of the track. It's easiest to start at one of the corners. To start the removal process, you need to tug the gasket firmly. Pull the gasket out from the side of the door if you have a hard time starting at a corner. You should be able to pull the gasket out easily once the removal process starts.

  3. Clean the track in the refrigerator door

    If there are spills around the track, wipe them off with a wet cloth. The track needs to be cleaned to make sure the gasket fits in the track and seals the door correctly.

  4. Install the new gasket

    Start at the top of the door and work the gasket into the track. You can go down both sides of the door. Check for loose spots and adjust the gasket for a proper fit. To help the new gasket seal properly, spread a thin coat of petroleum jelly along the seal surface of the door gasket. If you want to check the fit, close the door. There should be no gaps between the cabinet and door. It's a good idea to smooth out any gaps. The door gasket should be pushed further into the track to eliminate gaps.

Time required:

15 minutes.

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