Answer first
On a WAA refrigerator this is usually a frosted-over evaporator and a stalled defrost cycle rather than a dead compressor: the cabinet warms while the unit keeps running, which is the signature of an airflow fault and not a power fault. You can settle most of this yourself before anyone comes out, and this page stops where the meter starts.
What you are looking at
- The sides or back of the cabinet feel hot to the hand — Heat is being rejected but not carried away.
- NEAR MISS: the unit is silent and nothing is cold — That is a no-power or start-relay fault, and it is a different page from this one.
Causes, most likely first on this unit
- A frosted-over evaporator and a stalled defrost cycle — Ice builds on the evaporator until air can no longer pass through it. The unit keeps running and keeps making cold, but none of it reaches the cabinet. First, and the whole order below follows from it: the defrost system stalls long before it fails outright, so the ice builds quietly over weeks and what the owner notices is the warmth, never the frost.
- A failed or obstructed evaporator fan — The fan behind the freezer rear panel is what pushes cold air into the fresh-food side. Second: it is the one motor in the cabinet that runs almost continuously, and it is the part that gives out first on most platforms.
- A sealed-system or compressor fault — A refrigerant leak or a failing compressor gives the same warm cabinet as everything above it, which is exactly why it is diagnosed last and not first. Last, and that is the point of this order: it is the least common cause on this list and the only one that is not an owner fix, so checking it first only ever wastes money.
The order to check in
- Look at the freezer rear panel for a sheet of frost — This separates an airflow fault from a cooling fault before any tool comes out.
- Open the freezer and listen for the fan, then press the door switch in by hand — If the fan does not start when the switch is held in, you have found it.
- Feel whether the condenser coil is warm along its length — Only worth doing once everything above is clean, and only a technician can act on it.
The checks you can make yourself
- Empty the freezer, switch the unit off at the wall and leave both doors open until it is fully thawed — If cold returns afterwards and then fades again over days, the defrost system is your cause.
About 45 min
- Hold the freezer door switch in and listen for the fan behind the rear panel — No fan noise with the switch held in points straight at the fan or its switch.
About 5 min
- STOP HERE if the fault is on the sealed system — Refrigerant is licensed work and the tools for it are not owner tools.
Safety first, and it is not boilerplate
Safety
Pull the plug or drop the breaker before you take off a panel. There is a capacitor in this appliance that stays charged after the power is gone, and the compressor terminals are live whenever it is not. Do not rewire or bypass a door switch to keep a fan running while you look. Refrigerant work is licensed, so the sealed system is a technician's job from the first step to the last.
The line between a fix and a service call
Call once the checks above come back clean, or the moment the fault is on the sealed system: refrigerant is licensed work and the tools for it are not owner tools. Call sooner if you smell burning, see oil around the compressor, or the unit trips a breaker.
Related pages for this unit
Scope of this page, and where to go for more
This page covers the WAA refrigerator as a class, not one family or model line. Where a family- or model-specific page exists it is linked here. Deliberately not here: wiring colours, board part numbers, refrigerant charge figures and any sealed-system procedure, all of which differ by family and belong on the page for that family.
Links: - [Why a WAA refrigerator is leaking water](/blog/waa-refrigerator-water-leak) - [Why a WAA refrigerator has started making a noise](/blog/waa-refrigerator-abnormal-noise) - [Walmart Mainstays refrigerator not cooling: what it usually means](/blog/walmart-mainstays-refrigerator-cooling-failure)
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
