The short answer
Noise from the G family is usually one of three rotating parts or the cabinet itself resonating, and which one it is can be told from where and when the noise happens. That ordering is specific to how this platform is built and it is not the order the brand-generic page uses.
What you observe
- A buzz or rattle that stops when the door opens — Near-diagnostic: the circulation fan is switched by the door, so the noise is the fan or something touching it.
- A hum that comes and goes on a long cycle — Compressor noise, normal in itself unless it has changed character recently.
- A gurgle or trickle after the unit stops — Refrigerant settling. It is normal and needs nothing done about it.
- A bang or crack from inside the cabinet — Plastic liner expanding and contracting through a defrost cycle, which is normal on most cabinets.
- NEAR MISS - noise plus a cabinet that is warming — Read the cooling page as well; a noisy fan that is failing takes the cooling with it.
Causes, most likely first on G
- Circulation fan blade fouled by frost or an item — Ranked first on the G family: the fan sits close behind the rear panel on this family, so a frost ridge or a stray package reaches the blade easily. Every model code in the table above shares the same air path, which is why this ranks above the sealed system rather than below it. What moves against the brand-generic order is lower down: condenser fan or a loose fan shroud sits above start relay, defrost timer or a solenoid clicking here, because these models share one layout, so its weak point shows across the whole family.
- Cabinet contact and levelling — Second: a cabinet that has moved, settled or lost a foot transmits the vibration it has always made straight into whatever it is touching.
- Condenser fan or a loose fan shroud — Third: the machine compartment is shallow here, so a shroud that has worked loose buzzes against the coil.
- Start relay, defrost timer or a solenoid clicking — Fourth: a regular tick at a long interval is a timer rather than a fault, and it is worth recognising before parts are changed.
- Compressor mounts or compressor wear — Last: last, and a compressor that has genuinely changed its note normally changes the cabinet temperature at the same time.
Check in this order, and why
- Open the door and listen for the noise to stop — The circulation fan is switched by the door, so this splits the fault in one move.
- Time the noise against the compressor cycle — Noise that begins and ends with the compressor is a different fault from noise that runs constantly.
- Check the unit is level and clear of the wall and cabinets — Costs nothing and explains a large share of noise complaints on this platform.
- Look behind the rear panel for frost touching the fan — Do this last, because it needs the cabinet emptied to see properly.
Before you open anything
Safety
Isolate at the breaker before any panel comes off, and leave the sealed system alone entirely: refrigerant work is licensed work and the tools for it are not owner tools.
When to call a technician
Call at once if the noise arrived together with a loss of cooling: a failing fan explains both, and leaving it running costs the food as well as the part.
Other G pages
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