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Magic Chef Freezer coils frozen: Common Causes & How to Fix

1 Magic Chef Freezer Defrost Thermostat

Most Common Solution
Repair Instructions:

The defrost heater activates multiple times daily to melt frost that might have built up on the Magic Chef freezer's evaporator coils. However, before the heater can turn on, the defrost thermostat needs to detect that the coils are sufficiently cold (usually below 30 degrees Fahrenheit). If the thermostat is working correctly, it will allow the defrost heater to turn on. If it's faulty, the heater won't activate, leading to frost over the evaporator coils. You can use a multimeter to test if the thermostat is defective. If the defrost thermostat doesn't show continuity, it means it needs replacing.

How to Replace Magic Chef Freezer Defrost Thermostat

  1. Unplug the Magic Chef freezer - Unplug the Magic Chef freezer from the electrical outlet to avoid electric shock.

  2. Remove food and shelves - Take out all food items and removable shelves from the Magic Chef freezer to provide easy access.

  3. Locate thermostat - The defrost thermostat is usually located behind the back Magic Chef freezer wall. Consult the Magic Chef freezer's user manual if you can't find it.

  4. Disconnect thermostat wires - Remove the thermostat cover and disconnect the wiring harness by pulling it off the thermostat terminals.

  5. Unscrew thermostat - Unscrew and remove the old thermostat from the Magic Chef freezer wall.

  6. Install new thermostat - Screw in the new thermostat and snap the wiring harness onto the terminals. Ensure the connections are tight.

  7. Replace cover and shelves - Put the thermostat cover back on and return the shelves and food items to the Magic Chef freezer.

  8. Plug in Magic Chef freezer - Plug the Magic Chef freezer back into the electrical outlet and check that it starts up normally.

  9. Test operation - Allow the Magic Chef freezer to cool down completely, then confirm the new thermostat cycles on and off as expected during defrost cycles.

View Magic Chef Freezer Defrost Thermostat parts

2 Magic Chef Freezer Defrost Timer

Most Common Solution
Repair Instructions:

The defrost timer activates the defrost heater several times a day to melt any frost build-up on the Magic Chef freezer's evaporator coils. If the heater doesn't turn on, frost will keep gathering on the coils, causing them to freeze over. The defrost timer needs to move into the defrost cycle to activate the heater. If the timer isn't moving correctly, the heater won't switch on. To check if the timer is faulty, carefully turn it using a screwdriver or by hand until it clicks, which will switch off the compressor and fans. If the defrost thermostat and heater are functioning well, the heater will then activate. If the heater switches on, it means the timer is faulty and needs replacing.

How to Replace Magic Chef Freezer Defrost Timer:

  1. Safety Precautions:

    • Prioritize safety by unplugging the Magic Chef freezer from the power source to prevent electrical accidents.
  2. Prepare the Workspace:

    • Empty the Magic Chef freezer and remove any items from inside to access the defrost timer easily.
  3. Locate the Defrost Timer:

    • The defrost timer is typically situated on the rear exterior of the Magic Chef freezer, often behind a protective cover or panel.
  4. Identify Wiring Connections:

    • Carefully note how the wires are connected to the defrost timer. Take a photo or make a diagram to remember the connections.
  5. Release the Old Defrost Timer:

    • The timer is usually secured with screws or clips. Remove these fasteners to release the old timer from its mounting location.
  6. Replace with a New Defrost Timer:

    • Position the new defrost timer in the same location as the old one, making sure it's properly aligned with any mounting holes or brackets.
  7. Reconnect Wiring:

    • Reattach the wires to the new defrost timer, ensuring they are connected in the same way as on the old timer.
  8. Secure the New Timer:

    • Fasten the new defrost timer in place with screws or clips.
  9. Plug the Magic Chef Freezer Back In:

    • Reconnect the Magic Chef freezer to the power source, making sure it's properly plugged in.
  10. Test the Magic Chef Freezer:

    • Power on the Magic Chef freezer and monitor the defrost cycle. Check that the new timer functions correctly, initiating defrost cycles as intended.
  11. Final Checks:

    • Confirm that the Magic Chef freezer maintains the desired temperature and that the defrost timer performs its function without any issues.

View Magic Chef Freezer Defrost Timer parts

3 Magic Chef Freezer Defrost Heater Assembly

Most Common Solution
Repair Instructions:

The defrost heater works several times daily to melt any frost build-up on the Magic Chef freezer's evaporator coils. If it fails to turn on, frost will continue to gather on the coils, eventually causing them to freeze over. To check if the defrost heater is the problem, use a multimeter to test its continuity. If the defrost heater doesn't show continuity, it's time to replace it.

How to Replace Magic Chef Freezer Defrost Heater Assembly:

  1. Safety Precautions:

    • Prioritize safety by unplugging the Magic Chef freezer from the power source to prevent electrical accidents.
  2. Prepare the Workspace:

    • Empty the Magic Chef freezer and remove any items from inside to access the defrost heater assembly easily.
  3. Locate the Defrost Heater Assembly:

    • The defrost heater assembly is typically located behind the rear panel of the Magic Chef freezer.
  4. Remove the Rear Panel:

    • To access the defrost heater assembly, you'll need to remove the rear panel. This panel is often held in place with screws. Remove these screws and carefully take off the panel.
  5. Identify the Defrost Heater Assembly:

    • Locate the defrost heater assembly, which is a coiled wire element typically secured to the evaporator coils.
  6. Disconnect Wiring:

    • Carefully note how the wires are connected to the defrost heater assembly. Unplug or disconnect the wires, remembering their positions.
  7. Remove the Old Heater Assembly:

    • The defrost heater assembly is often held in place by clips or brackets. Carefully detach it from these securing mechanisms.
  8. Replace with a New Defrost Heater Assembly:

    • Position the new defrost heater assembly in the same location as the old one, making sure it's properly aligned and secured.
  9. Reconnect Wiring:

    • Reattach the wires to the new defrost heater assembly, ensuring they are connected in the same way as on the old assembly.
  10. Replace the Rear Panel:

    • Reattach the rear panel and secure it in place with the screws you removed earlier.
  11. Plug the Magic Chef Freezer Back In:

    • Reconnect the Magic Chef freezer to the power source, making sure it's properly plugged in.
  12. Test the Magic Chef Freezer:

    • Power on the Magic Chef freezer and monitor it to ensure the new defrost heater assembly functions correctly and prevents frost buildup.
  13. Final Checks:

    • Confirm that the Magic Chef freezer maintains the desired temperature and that the defrost heater assembly performs its function without any issues.

View Magic Chef Freezer Defrost Heater Assembly parts

4 Magic Chef Freezer Door Gasket

Common Solution
Repair Instructions:

The door gasket keeps air from leaking into or out of the Magic Chef freezer. If the gasket is damaged, not sealing properly, or the Magic Chef freezer door isn't closed securely, moist air can seep into the Magic Chef freezer. This humid air, when it comes in contact with the cold evaporator coils, condenses and freezes, causing the coils to ice over fast. If this continues, the defrost cycle can't keep up. To check the gasket's seal, try the dollar bill test: close the door on a dollar bill and attempt to pull it out. If it sticks, the gasket is good. If it slides or falls out, the gasket is leaking. Do this around the entire door. If the dollar bill doesn't stick at any point, the gasket needs to be replaced.

How to Replace Magic Chef Freezer Door Gasket

  1. Unplug Magic Chef freezer - Unplug the Magic Chef freezer to avoid electric shock while working on it.

  2. Remove old gasket - Use a flathead screwdriver to pry up the old gasket from the door frame. Remove any remaining adhesive residue.

  3. Clean surface - Wipe down the Magic Chef freezer door frame thoroughly to remove dirt and debris. Ensure the surface is dry.

  4. Apply adhesive - Run a bead of gasket adhesive along the door frame where the new gasket will be installed.

  5. Install new gasket - Starting at the corner, press the new gasket firmly into place along the adhesive on the frame.

  6. Trim excess - Use scissors to trim off any excess gasket material around the door.

  7. Allow adhesive to dry - Let the adhesive cure fully before using the Magic Chef freezer, usually 24-48 hours.

  8. Plug in Magic Chef freezer - Plug the Magic Chef freezer back in and make sure the door seals properly when closed.

  9. Test seal - Place a piece of paper between the gasket and frame and close the door. The paper should be held firmly in place and difficult to pull out, indicating a good seal.

View Magic Chef Freezer Door Gasket parts
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