February 20, 2015

How to replace a freezer electronic control board

By Lyle Weischwill
How to replace a freezer electronic control board

This DIY repair guide explains how to replace an electronic control board in a freezer. The electronic control board starts and stops the compressor and fans to maintain the freezer temperature.

Because other parts can also affect the operation of the fans and compressor, have a service technician test the board to confirm it's the problem. Replace the electronic control board with the manufacturer-approved replacement part.

This repair guide and video shows how to replace the electronic control board in Kenmore, Frigidaire, Crosley, Gibson, and Kelvinator upright freezers.

Quick links
Tools required
Phillips screwdriver
Slot screwdriver
Nut drive
Repair difficulty
Time required
45 minutes or less
Repair difficulty
Time required
45 minutes or less
How to replace a freezer electronic control board video.

Replaing a freezer electronic control board video.

Instructions

  1. 01.

    Disconnect the electrical power

    Unplug the freezer or shut off the circuit breaker for the freezer.

    Tip: Move highly perishable food to a cooler or other cooled space. The freezer will be without power for about 45 minutes, which shouldn't affect most frozen foods.
  2. 02.

    Remove the front grille

    Remove the screws holding the grille at the base of the freezer and pull the grille off.

    Remove the grill screws.

    Remove the grill screws.

    Remove the grill.

    Remove the grill.

  3. 03.

    Remove the rear machine compartment cover

    Move the freezer away from the wall.

    Remove the rear machine compartment cover screws and pull off the cover.

    Warning: The freezer is heavy. Use a helper to move the freezer away from the wall.

    Remove the rear cover screws.

    Remove the rear cover screws.

    Remove the rear cover.

    Remove the rear cover.

  4. 04.

    Remove the electronic control

    Remove the screw from the electronic control board cover.

    Pull out the electronic control board cover and release it from the cabinet base. The electronic control board wires are still connected.

    Set the electronic control board on the floor just behind the grill.

    From the front of the freezer, pull the electronic control board through the grill opening.

    Release the wire harness latch on the notch in electronic control board cover.

    Take a digital picture of the wire connections on the control board before disconnecting.

    Disconnect the wires from the electronic control board.

    Release the locking tabs and remove the electronic control board from the cover.

    Warning: Sharp, crimped tubing is exposed in the machine compartment. Place tape over the tips of exposed copper tips to protect your arms before reaching into the machine compartment.
    Tape sharp tips of copper tubing to prevent scratching your arm.

    Tape sharp tips of copper tubing to prevent scratching your arm.

    Remove the control board housing screw.

    Remove the control board housing screw.

    Pull the control board out.

    Pull the control board out.

    Release the wire harness locking tab.

    Release the wire harness locking tab.

    Disconnect all wires from the control board.

    Disconnect all wires from the control board.

  5. 05.

    Install the new electronic control board

    Carefully push the new electronic control board into the cover and snap it into place.

    Reinstall the wire harness in the notch of the electronic control board cover and snap the wire harness latch closed.

    Reconnect the wires on the electronic control board, using your digital picture as a guide.

    Push the electronic control board and cover carefully into the bottom of the cabinet through the grill opening.

    Mount the electronic control board cover to the base of the freezer.

    Connect the wires and push the control board into the cabinet.

    Connect the wires and push the control board into the cabinet.

    Mount the control board to the base of the cabinet.

    Mount the control board to the base of the cabinet.

  6. 06.

    Reassemble the covers

    Place the rear machine compartment cover on the back of the freezer and reinstall the mounting screws.

    Reinstall the front grille.

    Reinstall the rear cover.

    Reinstall the rear cover.

    Reinstall the grill.

    Reinstall the grill.

  7. 07.

    Restore electrical power

    Plug in the freezer or turn on the house circuit breaker to restore power.

Warning: Undertaking repairs to appliances can be hazardous. Use the proper tools and safety equipment noted in the guide and follow all instructions. Do not proceed until you are confident that you understand all of the steps and are capable of completing the repair. Some repairs should only be performed by a qualified technician.

Symptoms common to all freestanding freezers

Choose a symptom to see related freezer repairs.

Main causes: lack of power, bad compressor, refrigerant leak, bad thermistor, defrost system failure, dirty condenser coils, control failure
Main causes: leaky door or lid gasket, broken defrost heater, bad defrost bi-metal thermostat, defrost control failure, faulty compressor
Main causes: dirty condenser coils, condenser fan failure, dirty bottom front grill, leaky door or lid gasket
Main causes: burned out light bulb, bad door or lid switch, faulty LED light board, wiring failure, control system failure
Main causes: lack of power, control system failure, broken compressor start relay, locked up compressor, compressor motor failure
Main causes: damaged door or lid gasket, cracked cabinet liner, bad defrost bi-metal thermostat, broken defrost heater, bad defrost timer
Main causes: compressor failure, no refrigerant, faulty sensor, control failure, broken defrost heater, bad defrost bi-metal thermostat
Main causes: excessive frost, bad defrost heater, bad defrost bi-metal, control system failure, low refrigerant charge, compressor problems

Repair guides for upright freezers

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When the thermistor can’t sense the freezer temperature, the freezer is colder or warmer than the set temperature. Follow these step-by-step instructions to replace a defective freezer thermistor.

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February 20, 2015
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If frost builds up on the freezer evaporator because the defrost heater isn’t working, follow these step-by-step instructions to replace the freezer defrost heater.

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February 20, 2015
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Air won’t circulate to cool the freezer properly when the evaporator fan fails. Follow these step-by-step instructions to replace a defective evaporator fan.

Repair difficulty
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