The short answer
Noise complaints on the AZF line resolve faster when the sound is placed before it is named. Three model numbers carry this family badge, and the matrix on this page is the list. There are three places a refrigerator can make noise — inside the freezer, in the machine compartment, and through the cabinet into the floor — and each has a short list of its own.
What you hear, and where from
- A rattle or buzz from the back of the cabinet — Loudest behind the unit and it starts and stops with the compressor cycle — that is the condenser fan or something touching it.
- A buzz or hum that has become noticeably louder — A compressor on tired mounts transmits into the floor, so the cabinet appears to get louder without the compressor changing at all.
- Gurgling, popping or a running-water sound — These are normal on every cabinet of this type and they get louder in a quiet room rather than in a failing appliance.
- NEAR MISS — the noise comes with a warm cabinet — Then the noise is secondary and the cooling failure is the page you want; fix the cooling and the noise usually goes with it.
Ranked causes for these models
- Evaporator fan blade fouling ice or a worn fan bearing — Ranked first on the AZF line: the matrix on this page covers only a handful of closely related models and this is the fan that runs coldest and wettest, so it is the first bearing to complain and the first blade to catch ice.
- Condenser fan obstructed or bearing worn — Second, and easier to confirm than the first — pull the unit out, look, and the obstruction is usually visible.
- Compressor mounts and cabinet levelling — Third: a hum that has grown without changing pitch is normally transmission through tired mounts or an unlevel cabinet, not a failing motor.
- Compressor or start relay fault — Fourth because a relay clicking on a short repeating cycle is distinctive enough to identify by ear, and a compressor that is genuinely noisy is rarer than any of the three above it.
What to check first, second, third
- Open the freezer and hold the door switch in — If the noise stops when the door opens and returns when the switch is held, it is the evaporator fan and nothing else. This is first because it is decisive and needs no tools.
- Look for frost on the freezer rear panel — A blade ticking against ice and a worn bearing sound similar; the ice tells you which, and it changes the repair.
- Pull the unit out and watch the condenser fan run — Second location, same class of fault — an obstruction is usually visible before anything is dismantled.
- Check the cabinet is level and not touching the surround — Last, because it explains a noise that has grown rather than one that appeared, and it is an adjustment rather than a repair.
Before any panel comes off
Safety
Unplug the appliance or switch off its breaker before any panel comes off; a capacitor can hold a charge after the power is off. A full cabinet is heavy — empty it before moving it, and get help rather than walking it on its feet across a hard floor. Do not chip ice off a fan blade with anything metal; the tubing behind it punctures easily.
Models in the AZF family
Reference| Model number | Family key |
|---|---|
| AZF33X16D* | amana:refrigerator:azf |
| AZF33X18D* | amana:refrigerator:azf |
| AZF33X20D* | amana:refrigerator:azf |
Where owner work stops
Call when the noise tracks the compressor exactly, when a repeating click comes with a warming cabinet, or when the repair needs the freezer emptied and the rear panel off. On the AZF line the owner side stops at levelling, obstructions and identifying which fan is making the sound. Anything that needs the sealed system opened is licensed work.
Nearest pages of this class
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
