How To Test the Overload Protector

The overload protector is designed to protect the compressor motor from damage. The location of the overload protector is with the start relay on or near the compressor. The compressor is found at the lower rear of the freezer, except for high-end, built-in style refrigerator-freezers where the compressor is usually on top.

Caution:

Please read our safety information before attempting any testing or repairs.

Before testing the compressor motor, unplug the freezer to avoid an electrical shock hazard. Also, if the compressor uses a capacitor, it may contain a lethal electrical charge. Do not touch the terminals until you have discharged the capacitor.

Steps to Test the Overload Protector:

  1. Access the Overload Protector:
    • The overload protector is accessed from the lower rear of the refrigerator.
    • The compressor is labeled “A”, the overload protector is located in the terminal box at position “B”.
  2. Remove the Terminal Cover Box:
    • The terminal cover box houses the overload protector.
    • The cover is held on by tension or with a retaining clip. Carefully remove the cover.
  3. Locate the Overload Protector:
    • The overload protector is usually a small, round, or square device located near the compressor terminals.
  4. Disconnect the Overload Protector:
    • Carefully disconnect the overload protector from the compressor. It may be connected with slip-on connectors or screws.
    • Label the wires to ensure proper reconnection later.
  5. Test for Continuity:
    • Use a multimeter set to the ohms setting (Ω) to test for continuity.
    • Place one probe on each terminal of the overload protector.
    • A reading of zero ohms indicates continuity and that the protector is functioning correctly.
    • If the meter reads infinity (no continuity), the overload protector is faulty and needs to be replaced.
  6. Reassemble:
    • If the overload protector is functioning correctly, reconnect it to the compressor.
    • Replace the terminal cover box and secure it with the retaining clip or tension mechanism.
    • Plug the refrigerator back in.

By following these steps, you can test and ensure that the overload protector is functioning correctly, protecting your compressor from potential damage.

Further Readings

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