This DIY repair guide explains how to replace the compressor start relay on a freezer. The compressor start relay helps start the freezer compressor. A broken relay—which may rattle when you shake it or have burn marks—can keep the compressor from running. Replace the compressor start relay with the manufacturer-approved freestanding freezer part.

Follow these steps to replace the compressor start relay on common Kenmore, Frigidaire, Crosley, Gibson, White-Westinghouse and Kelvinator chest freezers.

Instructions

1. Disconnect the electrical power: Unplug the freezer or shut off the circuit breaker for the freezer.

2. Remove the grille cover

Pull the control knob straight off of the cold control thermostat.

Remove the screws securing the compressor grille cover to the freezer cabinet.

Hinge the grille cover down to access the back of the cold control thermostat.

Squeeze together the 2 locking tabs that secure the cold control thermostat to the compressor grille cover and release the cold control thermostat from the grille.

PHOTO: Release the thermostat from the grille cover.

3. Disconnect the wires from the compressor start relay: Squeeze the wire harness plug to release the locking tabs and remove the wire harness from the compressor start relay.
PHOTO: Disconnect the start relay wires.

4. Remove the compressor start relay

Release the wire retainer from the compressor start relay.

Grasp the compressor start relay firmly and pull it out of the connection terminals on the compressor.

5. Install the new compressor start relay

Position the new compressor start relay next to the compressor and line up the terminal prong connections.

Push the compressor start relay onto the compressor terminal prongs.

Reinstall the wire retainer on the start relay.

6. Reconnect the wires to the compressor start relay: Push the wire harness plug into the start relay. Make sure that the locking tabs snap into place.
PHOTO: Plug in the wire harness.

7. Reinstall the grille cover

Position the cold control thermostat on the compressor grille cover and push it into the grille cover. Make sure that the locking tabs on the cold control thermostat snap into place on the grille cover.

Position the control knob on the front of the cold control thermostat and push the control knob down on the stem of the cold control thermostat.

Position the compressor grille cover properly on the freezer cabinet and secure it using the mounting screws.