Official Roper bottom-mount refrigerator parts

Replacing the condenser fan motor in a Roper bottom-mount refrigerator

• Unplug the power cord from the wall outlet. Pull the refrigerator away from the wall.
• Remove the screws from the rear compartment cover and then remove the cover.
• Remove the front base screw from the fan motor bracket. Pivot the bracket toward the compressor and remove the rear bracket base screw. Tilt the fan motor bracket toward the condenser and remove the upper mounting screws that hold the condenser fan motor in the bracket. Tilt the motor bracket toward the compressor and remove the fan motor from the bracket. Unplug the fan motor wire harness and pull out the motor. Pull off the fan blade.
• Install the fan blade on the new motor. Plug in the motor wire harness. Position the new motor on the motor bracket and reinstall the upper mounting screws. Reinstall the base bracket screws.
• Position the rear compartment cover on the back of the refrigerator and reinstall the mounting screws. Plug in the refrigerator and push the refrigerator back into place.

Diagnosing thermistor problems in your Roper bottom-mount refrigerator

If the fresh food section of your refrigerator isn’t cooling properly, you could have a problem with the appliance’s thermistor or temperature sensor. The electronic control board monitors the thermistor and controls the refrigerator temperature based on thermistor signals. A broken thermistor could send the wrong information to the control board, resulting in a refrigerator temperature that’s too cold or not cold enough.

Check the thermistor resistance. For safety, unplug the refrigerator. Remove the thermistor cover to access the thermistor. Examine the thermistor's wire harness for damage or loose connections. If the wiring harness looks okay, check the resistance of the thermistor using a multimeter. Remove the thermistor and put the meter leads on the two white wires. The tech sheet for your refrigerator includes a temperature/resistance chart for the thermistor. You can usually find the tech sheet inside the refrigerator, stored behind the bottom front grill. Refer to this chart for the expected resistance readings for your model.

You'll need to replace the thermistor if its resistance doesn't match the expected resistance on the temperature/resistance chart.

If thermistor resistance is good, then you may need to replace the electronic control board.