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Alpicool's MT family answers a cabinet that will not hold temperature in a particular order, and a failed evaporator fan motor is at the top of it. The order below is this family's own, and it is not the order the brand-generic article sets out. Most of what follows can be settled without opening anything; only the last item is a service call.
What this looks like on a MT unit
- It cools in cool weather and fails in warm — A marginal heat rejection path shows itself seasonally.
- Temperature recovers for a day after a thaw — A unit that comes back after being emptied and left open has told you the cause.
- Frost builds as a sheet on the back wall — A sheet rather than the usual light dusting is an airflow story.
- The display looks normal and nothing runs — Power present and no compressor is a different problem from a compressor that runs and fails.
- The back of the unit is hot to the hand — Heat that cannot leave the coil is heat that comes back inside.
- More than one MT unit shows the same thing — With 2 builds under this key, the same behaviour across two of them points at the family rather than at one machine.
- NEAR MISS — water under the unit and normal temperature — A leak with a cold cabinet is the leak page, not this one.
Causes, most likely first on the MT family
- A failed evaporator fan motor — It leads here. It produces a warm cabinet with no frost sheet to show for it, which is how it separates from the airflow cause.
- A frosted evaporator blocking the air path — It sits behind the lead here. The ice builds quietly over weeks, so the owner notices the warmth long before noticing the frost.
- A door seal that no longer closes on the cabinet — It is third on this family. A seal that has taken a set from being stored shut behaves differently from one that is torn.
- A sealed-system leak or a failed compressor — Last on this family. Oil at the compressor or a coil that never gets warm are the two signs that take you straight here.
- Body: The brand-generic article on this symptom opens on a frosted evaporator blocking the air path. Here it does not: a failed evaporator fan motor has moved above it, and a frosted evaporator blocking the air path has moved down the list. What moved it is the spread of the entries this family's model table carries.
Check in this order, and why
- Listen for the evaporator fan with the door switch held closed — No fan with a clean evaporator separates the two likeliest causes before a tool comes out.
- Empty the unit, leave it open for a day and watch it recover — A unit that comes back after a thaw has named its own cause.
- Close the door on a sheet of paper and pull — If it slides out freely anywhere along the run, that is where warm air is arriving.
- Look for oil traces at the compressor — Oil outside the tubing means the system is open and the checks above no longer apply.
- Body: Read the plate before starting: the MT pair are one step apart, and a check aimed at the wrong member wastes the visit rather than the minute.
Safety first
Safety
Before a panel comes off, isolate the unit at the plug or at the breaker. A capacitor can hold a charge after the power is off. Sheet-metal edges behind a panel cut, and a compressor housing stays hot long after a run. Gloves for the first, patience for the second. The sealed system is out of scope for every check on this page. If a step would mean opening it, the step is a service call instead.
Models in the MT family
Reference| Model number | Family key |
|---|---|
| MT25 | alpicool:refrigerator:mt |
| MT35 | alpicool:refrigerator:mt |
When to call a technician
On this family the split is simple: anything reachable without removing a panel is owner work, and nothing past that is. Work down the checks above first; they cost minutes and they remove most of this list. Call once they have all come back clean, because what is left is a sealed-system leak or a failed compressor, and that is the only item on this page that cannot be judged from outside the cabinet. Two things end the owner-side list immediately: a burning smell, and oil anywhere outside the tubing. Both mean stop and call rather than continue.
Other MT pages
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