The short answer
On an RTW refrigerator the usual explanation for a cabinet that will not cool is a supply problem at the socket rather than a dead compressor: the controller watches the voltage it is fed and stops cooling before it flattens a battery, and it does that with the panel still lit. Work the order below rather than the order of expense: the two cheapest checks settle most of these before a tool comes out.
What you actually observe
- The panel is lit and the set temperature is displayed, but nothing inside is cold — The control has power and thinks it is working.
- The box holds a mild chill but never reaches the set point — Heat is getting in as fast as it comes out, which is a seal, a load or an airflow problem.
- It cools on mains power but not from the vehicle socket — That isolates the fault to the DC supply path and nothing else.
- It cools, but the contents are icing up instead — NEAR MISS: the box is over-cooling, which is the ice-production page, not this one.
- Body: The RTW roster covers two listings, RTW20 through RTW25, and what follows is common to all of them unless a step says otherwise.
Causes, most likely first on the RTW platform
- 1. A lid that no longer clamps — The gasket is the only thing between the compartment and the day outside. Seals rank high on RTW because the two listings share an opening design, so the same gasket wear pattern turns up on both.
- 2. Blocked heat rejection at the condenser — Clearance is the specification nobody reads. It comes second because the check above it costs nothing, where this one usually means moving the machine.
- 3. The DC supply and its protection setting — The controller measures what the socket delivers under load and shuts the compressor down before the vehicle battery drops too far.
- 4. Frost on the evaporator plate — Frost builds quietly over weeks, especially on a unit opened often in humid air.
What to check first on these RTW models, and why
- 1. Close the lid on a sheet of paper and pull — A sheet that slides out with no drag marks the part of the seal that is not clamping.
- 2. Pull it into open air and clear the grille — Free the vent faces, wait, and feel whether the temperature starts falling.
- 3. Run it from a known-good supply for a while — Swapping supplies separates the whole DC path from the appliance in one move, with no tools.
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. Treat the DC lead as a live circuit even when the unit looks dead, keep the fused plug intact rather than bypassing it, and never cut into the sealed refrigerant circuit: it is licensed work and the tools to do it safely are not owner tools. No two RTW listings share a base number, so each one in the table is a distinct machine rather than a revision of its neighbour.
Models in the RTW family — The listings this family covers; it is a family page, not a model page.
Reference| Model number | Family key |
|---|---|
| RTW20 | alpicool:refrigerator:rtw |
| RTW25 | alpicool:refrigerator:rtw |
When to call a technician
The line is the sealed system and the compressor module. Everything before it is an owner check that costs a few minutes; everything from there needs a technician, and a unit that keeps cutting out on a clean supply has already crossed it.
The other symptoms covered for this family
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
