SYMPTOM

Unit makes unusual noises

Appliance: Sub-Zero Built-In (600 Series) Models: 601R, 601RG, 601F, 611, 611G, 642, 650, 650G, 661, 632, 685, 695

⚠ What This Means

You hear unexpected sounds coming from the refrigerator/freezer unit during operation.

Note that many sounds are normal during operation and are accentuated by surrounding walls, floors, and cabinets.
Gurgling or running water sounds are normal -- this is refrigerant circulating through the tubing.
Sounds of ice dropping into the container or the solenoid valve operating are normal during ice maker cycles.
Crackling and/or sizzling sounds are normal during freezer defrost as the defrost element clears frost from the freezer coil and water runs into the water pan.
A slight hum during compressor operation is normal. Brief vibration during compressor start-up and shutdown is also normal.
On models 685 and 695, the ice dispenser valve inside the refrigerator door snaps closed 5 seconds after the ICE or WATER key pad is released.
Some noises may be more noticeable when doors are open.
If sounds are persistent and clearly abnormal (grinding, loud banging), call Sub-Zero Customer Service at 800-222-7820.

Possible Cause	How to Fix
Refrigerant circulation	Normal -- gurgling/running water sound
Ice maker cycle	Normal -- ice dropping, solenoid valve noise
Defrost cycle	Normal -- crackling/sizzling as frost is cleared
Compressor operation	Normal -- slight hum, brief vibration at start/stop
Dispenser valve closing (685/695)	Normal -- snaps closed 5 seconds after key pad release

Find top-rated Sub-Zero Built-In (600 Series) repair technicians in your area. Licensed, insured, and reviewed by homeowners.

We may earn a referral fee when you hire through our partner links.

It is normal to hear the operation of fans and motors. Sounds will be accentuated based on the placement of the unit and overall room design.