The short answer
On the Amana 4w5ij21 refrigerator family, a cabinet that runs but will not hold temperature points at the evaporator fan first, because on a platform with one cold source feeding two compartments a stopped fan warms one side while the other still frosts. The brand-generic article puts a stalled defrost cycle at the top of this symptom; on this platform it sits second, behind causes that are quicker to rule out.
What you observe on these models
- Food at the back freezes while the front spoils — A wide spread across one compartment points at airflow rather than at how cold the machine can get.
- Frost builds as a sheet on the freezer rear wall — Not the usual light dusting but a solid layer that keeps returning after it is cleared.
- The outside of the cabinet is hot to the hand — Heat that has nowhere to go stays in the cabinet walls, and it is felt most at the sides.
- NEAR MISS — water on the floor with the temperature correct — That is a leak, and the cause list for it is a different one.
Causes, most likely first on this family
- Evaporator fan motor failed or seized — The first thing to rule in. Cold air is made in one place and has to be blown to the other. When that fan stops, the freezer side can still make frost while the fresh-food side warms steadily, which reads as a partial failure rather than a total one.
- Defrost cycle stalled and the evaporator iced over — Second, and close behind the first. Adaptive defrost degrades before it fails outright, so ice builds on the evaporator over weeks, airflow drops, and the owner notices the warmth long before anyone notices the frost sheet behind the rear panel.
- Condenser coil choked with dust, lint or pet hair — Third. The coil is the only place heat leaves the cabinet. Once it is blanketed the compressor runs longer and longer for less and less cooling, which is exactly the pattern of a unit that hums all day and never gets cold.
- Sealed-system fault — a refrigerant leak or a restriction — Last, and the only one of the four here that is not owner work. The compressor runs and the coil never gets properly hot, or gets hot in one patch only. It is the one cause on this list that is licensed work rather than owner work.
Check in this order, and why
- Listen at the freezer with the door held open and the switch pressed — Start here. The fan should run. Silence with the switch pressed separates the two commonest causes before a panel comes off.
- Take the freezer rear panel off and look for a frost sheet — Then this. A solid sheet across the evaporator is the airflow answer; a light dusting is normal and means keep looking.
- Look at the condenser coil — Third. It is reached without tools on most cabinets and it tells you in one look whether heat can leave at all.
Before you open anything
Safety
Unplug the appliance or switch off its breaker before removing any panel; a capacitor can hold a charge after the power is off.
Models covered by the 4w5ij21 family
Reference| Model number | Family key |
|---|---|
| 4w5ij21-01 | amana:refrigerator:4w5ij21 |
| 4w5ij21-02 | amana:refrigerator:4w5ij21 |
| 4w5ij21-03 | amana:refrigerator:4w5ij21 |
| 4w5ij21-04 | amana:refrigerator:4w5ij21 |
| 4w5ij21-05 | amana:refrigerator:4w5ij21 |
| 4w5ij21-06 | amana:refrigerator:4w5ij21 |
When to call a technician
Call once the owner-side checks above are clean, and call straight away if the fault is on the sealed system: refrigerant work is licensed work and the tools for it are not owner tools.
The other faults covered for this family
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