Symptoms
- Buzzing or humming louder than usual
- Clicking every so often
- Rattling that changes with vibration
- Squealing or grinding sound
Likely causes
- CommonEvaporator or condenser fan blade hitting ice or debrisFrost buildup or a dislodged item can make the fan blade strike something as it spins.
- CommonIce maker cycling normallyThe harvest and fill cycle naturally makes clicking and brief water sounds that are normal.
- CommonUnit not level or items vibrating against itBottles, containers, or an unlevel freezer can rattle against the walls as the compressor runs.
- PossibleCompressor start relay clicking repeatedlyA failing start relay can click without the compressor successfully starting.
- PossibleWorn fan motor bearingA squealing or grinding fan motor bearing will get progressively louder and can eventually fail.
What to do
- Note when the noise happens (constant, only during ice cycle, only when compressor starts) to help narrow the cause.
- Check for frost buildup around the evaporator fan (behind the back panel in most freezers) and defrost if heavy.
- Make sure nothing inside is touching the walls or vibrating loosely; rearrange contents if needed.
- Use a level to check the unit sits evenly on the floor and adjust leveling legs.
- If clicking repeats every few seconds without the unit actually cooling, that suggests a start relay problem.
- If the noise is a squeal or grind that gets worse over time, plan to have the fan motor inspected before it fails completely.
Tools and parts
- Level
- Flashlight
Evaporator fan motorSearch: “freezer evaporator fan motor”
Compressor start relaySearch: “freezer compressor start relay”
When to call a pro
If the noise is a grinding or repeated clicking without cooling, call an appliance technician before the compressor or fan fails outright.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.