Sub-Zero
Abnormal Operating Noise
Ice maker is making loud grinding, squealing, or rattling noises during operation.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Worn harvest motor gears, Debris in circulation pump, Failing condenser or evaporator fan motor, Loose panels or mounting hardware
How to Fix / Troubleshooting
Safety: Disconnect power before touching moving parts. Do not operate the unit with covers removed.
Noise troubleshooting steps:
- 1. Identify noise source: Remove the front grille and listen carefully (with power on briefly) to determine if the noise comes from the compressor area, fan, pump, or harvest mechanism. Then disconnect power.
- 2. Check for loose parts: Tighten any loose screws on panels, brackets, and the ice bin.
- 3. Inspect fans: Spin fan blades by hand to check for rubbing or wobble. Replace noisy or worn fan motors.
- 4. Examine harvest motor: Inspect the harvest drive for worn gears or misalignment. Replace the harvest motor assembly if grinding persists.
- 5. Inspect pump: Remove and inspect the circulation pump for debris. Clean or replace as needed.
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Repair Difficulty
Medium
3/5
Required Part
Harvest Motor Assembly
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