The short answer first
On the 4w3in40 refrigerator this symptom is usually the start relay, the small part in front of the expensive one, which fails often enough that no page should reach for the compressor before ruling it out. Every model number in the 4w3in40 family is the same platform at a different point in its production run, so read your full model number before ordering anything.
What an owner actually sees
- The cabinet is warm but the unit is clearly running — The compressor hum is there and the air inside is not cold — the combination that separates this fault from a dead machine.
- The freezer holds but the fresh-food side does not — On these models the split tells you the problem is in how air is moved or metered, not in how cold is made.
- Frost builds as a sheet on the freezer rear wall — A solid white panel rather than the usual light dusting over the coil area.
- The compressor never seems to stop — Continuous running without arriving at temperature is the same fault seen from the other side.
- NEAR MISS — the unit is silent and nothing is cold — No hum, no fan and no lights means a power, relay or board fault, and that belongs on the will-not-start page rather than this one.
Causes, most likely first on the 4w3in40 family
- Compressor start relay or overload protector — Top of the list here. A failed relay leaves a healthy compressor unable to start: you get a click, a pause and a click again, and nothing gets cold.
- Defrost cycle stalled and the evaporator iced over — Second here. Ice on the evaporator blocks the only path cold air has into the cabinet, so the run time climbs while the air moves less and less.
- Evaporator fan motor stalled, obstructed or worn out — Third on this platform. A fan that runs slow rather than not at all produces the worst version of the fault: partial cooling that looks like a thermostat problem.
- Condenser coil and condenser fan choked with dust — Fourth: possible, but not where to start. This one is the most common cause that owners can actually fix, and it is the one most often skipped because the coil is out of sight.
- Body: A brand-generic article on this symptom starts with the defrost cycle. Here the compressor start relay or overload protector moves ahead of it, because the models in the table share the same construction, so what is true of one is true across the family.
The order to work in
- Listen at the compressor for a click every few minutes with no run — A repeating click and hum with no sustained run is the relay pattern and it is worth a technician visit before anything drastic.
- Take the freezer rear panel off and look at the evaporator coil — A solid sheet across the coil instead of an even light dusting confirms it; a clear coil rules the cause out in one look.
- Open the freezer and listen for the fan with the door switch held in — Press the door switch by hand.
Safety first
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 in the 4w3in40 family
Reference| Model number | Family key |
|---|---|
| 4w3in40-10 | amana:refrigerator:4w3in40 |
| 4w3in40-11 | amana:refrigerator:4w3in40 |
| 4w3in40-12 | amana:refrigerator:4w3in40 |
| 4w3in40-13 | amana:refrigerator:4w3in40 |
| 4w3in40-14 | amana:refrigerator:4w3in40 |
| 4w3in40-15 | amana:refrigerator:4w3in40 |
| 4w3in40-16 | amana:refrigerator:4w3in40 |
| 4w3in40-17 | amana:refrigerator:4w3in40 |
| 4w3in40-18 | amana:refrigerator:4w3in40 |
| 4w3in40-19 | amana:refrigerator:4w3in40 |
| 4w3in40-20 | amana:refrigerator:4w3in40 |
| 4w3in40-21 | amana:refrigerator:4w3in40 |
| 4w3in40-22 | amana:refrigerator:4w3in40 |
| 4w3in40-23 | amana:refrigerator:4w3in40 |
| 4w3in40-24 | amana:refrigerator:4w3in40 |
| 4w3in40-25 | amana:refrigerator:4w3in40 |
| 4w3in40-26 | amana:refrigerator:4w3in40 |
| 4w3in40-27 | amana:refrigerator:4w3in40 |
| 4w3in40-28 | amana:refrigerator:4w3in40 |
| 4w3in40-29 | amana:refrigerator:4w3in40 |
| 4w3in40-30 | amana:refrigerator:4w3in40 |
| 4w3in40-31 | amana:refrigerator:4w3in40 |
| 4w3in40-32 | amana:refrigerator:4w3in40 |
| 4w3in40-33 | amana:refrigerator:4w3in40 |
| 4w3in40-34 | amana:refrigerator:4w3in40 |
| 4w3in40-35 | amana:refrigerator:4w3in40 |
| 4w3in40-36 | amana:refrigerator:4w3in40 |
| 4w3in40-37 | amana:refrigerator:4w3in40 |
| 4w3in40-38 | amana:refrigerator:4w3in40 |
Where the owner fix stops
Call immediately if you smell burning, see oil at the compressor or see scorch marks at a connector — oil outside the tubing means the system is open and every hour of running makes it worse. A refrigerator holds food safely at 40 degrees Fahrenheit, which is 4 degrees Celsius, or below, so if the cabinet has been above that overnight, deal with the food before you deal with the appliance.
Other faults covered for the 4w3in40 family
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
