Refrigerator repair Sub-Zero 700TR 2

Refrigerator repair for Sub Zero 700TR 2 - February 14 by Morgan Appliance Repair in Chicago

Description of objects for repairing

Object:Sub-Zero refrigerator, model 700TR 2. Customer claim: refrigerator does not cool. Does not respond to the settings. Issue: Replacing the control board, thermistors, and cold fan motor in a Sub-Zero Refrigerator (Model: 700TR 2). Equipment that was used during repair work: tool for disassembly of household appliances, components and technical documentation from Sub-Zero refrigerators for this type of appliance.
Replacing the control board, thermistors, and cold fan motor in a Sub-Zero Refrigerator (Model: 700TR 2) involves dealing with electrical components and refrigeration mechanisms, so it’s important to proceed with caution and follow safety guidelines. If you’re not comfortable with electrical repairs or if the refrigerator is still under warranty, consider contacting a professional or Sub-Zero’s customer service. If you decide to proceed, here’s a general guide on how to replace these parts. Note that this is a general guide, and specifics can vary by model. You can read more about our service here: refrigerator repair chicago. If you have problems with devices of this type: refrigerators, freezers, ice makers, please contact us. We’ll be glad to be of service!

Repairing procedure

Tools Needed:

  • Screwdrivers (Phillips and flat-head)
  • Needle-nose pliers
  • Multimeter (for testing thermistors and electrical connections)
  • Replacement parts (control board, thermistors, cold fan motor)

Safety Precautions:

  • Unplug the refrigerator or disconnect power at the circuit breaker.
  • Wear safety gloves to protect your hands from sharp components.
  • Ensure the area is well-lit and dry.

Replacing the Control Board:

  • Access the Control Board: The control board is typically located behind a panel at the top or back of the refrigerator. Use a screwdriver to remove the panel.
  • Disconnect the Old Board: Carefully disconnect all wires connected to the control board. It’s helpful to take a picture before disconnecting to ensure proper reconnection.
  • Remove the Old Board: Unscrew any fasteners holding the board in place and remove it.
  • Install the New Board: Mount the new control board in place and secure it with screws.
  • Reconnect Wires: Refer to your photo or diagram and reconnect all wires to the new board.
  • Reassemble: Replace the panel that covers the control board.

Replacing Thermistors:

  • Locate Thermistors: Thermistors are usually found in the refrigerator and freezer compartments, attached to the back wall or near the evaporator coil.
  • Access and Remove: Depending on their location, you may need to remove shelving or panels. Disconnect the thermistor(s) from the wiring harness.
  • Replace Thermistors: Connect the new thermistor(s) to the wiring harness and secure them in the same location as the old ones.
  • Reassemble: Reinstall any components or shelving you removed to access the thermistors.

Replacing the Cold Fan Motor:

  • Access the Fan Motor: The cold fan motor is typically located near the evaporator coil in the freezer compartment. You may need to remove drawers, shelves, or panels to access it.
  • Remove the Old Motor: Disconnect the fan motor from its electrical connector. Remove any screws or brackets holding the motor in place.
  • Install the New Motor: Mount the new motor and secure it with screws or brackets. Reconnect the electrical connector.
  • Reassemble: Replace any components, drawers, or shelves you removed.

Final Steps:

  • Power On: Once all parts are replaced, plug in the refrigerator or turn on the power at the circuit breaker.
  • Check Operation: Allow the refrigerator to cool for several hours. Verify that the temperature settings are correct and that the unit is cooling properly.
  • Monitor: Keep an eye on the refrigerator’s performance over the next few days to ensure everything is working as expected.


  • Refer to the Manual: Always consult the refrigerator’s manual for specific instructions related to parts replacement and diagrams.
  • Label Wires: When disconnecting wires, label them or take detailed photos to ensure correct reconnection.
  • Be Methodical: Keep track of screws and components as you remove them to ensure a smooth reassembly process.
If you encounter any issues during the replacement process or if the refrigerator does not function properly after the replacements, consider consulting a professional technician.

Morgan LLC Services for Chicago Residents

Morgan Appliance Repair is a trusted service provider known for its exceptional expertise in repairing household appliances. With a commitment to reliability and customer satisfaction, we deliver professional solutions to ensure your kitchen and bathroom appliances operate seamlessly. We have a lot of successful experience in repairing a variety of brands. Schedule an appointment today for swift, reliable, and certified repairs to keep your appliance running smoothly: appliance repair Chicago. Here is our location in Chicago, on Google Maps: appliance repair Chicago. Our service area covers Chicago, IL and all areas within a 50-mile radius of Chicago.
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