The short answer
On a portable Aglucky check the mains adapter first: a failing or under-rated supply stops the compressor starting and looks exactly like a dead fridge. Placement is second — a small unit in a cupboard or against a wall cannot shed its heat. The set point is third, and a sealed-system fault is last and rare on this class.
What you observe
- It cools on the vehicle lead but not on mains — The mains adapter, not the refrigeration.
- The adapter is hot or smells of warm plastic — Stop using it. That is a fault, not a quirk.
- A click every few seconds with no running — The supply cannot carry the compressor start.
- It sits in a cupboard or hard against a wall — The heat it makes has nowhere to go.
- NEAR MISS — warm after a large restock — Normal recovery in a small box.
Causes, most likely first on this class
- Mains adapter failing or under-rated — First because it is a separate working component the unit depends on absolutely, and a replacement chosen on price sags the moment the compressor tries to start. A unit that cools on its other lead has already proved this.
- Placement with no room to shed heat — Second, and specific to how these are used indoors: a cupboard, a shelf recess or a spot hard against a wall leaves the small coil nothing to work with, so it runs and runs without getting cold.
- Set point on a single-compartment unit — Third: one control serves the whole box, so a setting chosen for chilled drinks and a setting chosen for frozen food cannot both be right at once.
- Sealed-system or compressor fault — Last. Its tell is a unit that runs continuously on a known-good supply in a cool open room and still never gets cold, and at this price point it is a replacement conversation.
Check in this order, and why
- Try the unit on its other supply lead — Free, and it settles the adapter question outright.
- Feel the adapter after it has been running — Hot or smelling of plastic means stop using it.
- Move the unit into open air and run it — The second cause, and it costs nothing to test.
- Check the set point against how it is being used — Left until here because one control cannot do two jobs.
What an owner can safely check
- Run the unit from its other supply for an hour — Cooling on one lead and not the other names the adapter.
About 60 min
- Check the adapter, plug and lead for heat or damage — Replace rather than repair anything warm or marked.
About 20 min
- Stand the unit in open air, clear on every side — Out of a cupboard, off a shelf recess, away from a wall.
About 30 min
- Set the control and leave it a full day before judging — A small box takes time to settle after any change.
Tools: thermometerAbout 30 min
- STOP HERE if it will not cool on a good supply in open air — Sealed-system work needs a technician and a licence.
Before you open anything
Safety
Disconnect the unit from every supply before opening any panel; a capacitor can hold a charge after the power is off, and a dual-voltage cooler can be fed from a socket and a vehicle lead at the same time. Never use an adapter that is hot, damaged or not rated for the unit, and never cover one while it is working. Never open a sealed refrigerant line.
When to call a technician
Call when a known-good supply, an open position and a sensible setting still leave the unit warm — the sealed system or the compressor is then the answer. At this price point ask for the repair cost against a replacement before authorising anything. Stop using it immediately and disconnect if the adapter, plug or lead is hot or smells of burning.
Nearest pages of this class
What this page does not cover
This page is written for the brand and the appliance class, not for one family or model line. Where a family- or model-specific page exists for your unit, that page is the more specific answer and you should start there. Deliberately absent: adapter ratings, clearance dimensions, set-point ranges and part identifiers, all of which differ between the mains-only, dual-voltage and vehicle-only families.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
