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

The electronic control board is behind a panel on the back of the refrigerator and is located in the machine compartment. The compressor and other components of the refrigerator are controlled by the temperature control board. Diagnostic test procedures for the refrigerator are provided in the tech sheet. If the temperature control board doesn't work, you should replace it.

Follow these steps to fix your issue:

  1. Shut off the power and water supply.

    If the refrigerator is shut off for this repair, store any food that could degrade. Shut off the circuit breaker on the refrigerator. The water supply cutoff valve is for the icemaker. The valve can be attached to a water pipe under the kitchen sink, or in the basement under the fridge.

  2. Disconnect the water supply line.

    You can get to the water line from the refrigerator if you pull it away from the wall. To catch water, place a towel under the water valve assembly. When the water line is free, loosen the nut on the supply water line. Refer to the owner's manual for additional guidance if necessary.

  3. Remove the back panel.

    The screws that hold the bottom service panel to the back of the refrigerator can be removed with a Phillips screwdriver. The back panel should be removed.

  4. Remove the housing cover.

    The temperature control board housing has a screw that secures it to the cover. Pull the cover off.

  5. Disconnect the wires.

    You can take a picture of the wires or label them with tape. If the wires are locking tabs, use a slot screwdriver to release them.

  6. Remove the control board.

    The control board is secured with locking clips and mounting screws. The control board needs to be removed.

  7. Install the new control board.

    The locking clips should be used to engage the temperature control board. Remove the mounting screws. If you want to prevent static discharge from damaging the new control board, wear a grounding strap or touch the metal refrigerator cabinet.

  8. Connect the wires.

    Use your labels or photos as a guide to connect the wires to the new temperature control board.

  9. Reinstall the covers.

    Put the housing cover on top of the control housing. Attach the screw holes to the back of the refrigerator by placing the bottom back panel there. Put the screws in and tighten them.

  10. Reconnect the water supply line.

    Wrap some pipe thread tape around the back of the water valve. Attach the water line to the valve and tighten the compression nut. The water supply cutoff valve should be opened. If there is a leak, tighten the compression nut and check again.

  11. Restore electrical power and water supply.

    You can restore power by plugging in the refrigerator or the house circuit breaker.

Time required: 30 minutes.

You would need the following tools: 1/4-inch nut driver, Phillips screwdriver, slot screwdriver, work gloves.

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