The short answer
Every model in the ARU roster shares one capacity core and differs only in finish or trim, so the cabinet behind them is the same machine throughout, and its entries differ only in the trailing finish position. When a cabinet here runs continuously and still will not freeze, the compressor is almost always working and something is standing between it and the load. The candidates are a seal that is letting warm air in, frost insulating the cold surface, and a condenser that cannot reject heat, in roughly that order.
What you observe on these models
- Frost building up thickly on the walls or the cold plate — A blanket rather than the usual light dusting.
- The compressor never cycles off — A cabinet that runs without pause has stopped reaching its set point.
- Moisture or ice at the lid or door line — Warm room air meeting cold cabinet air at a seal that is not closing.
- The outside of the cabinet is warm to the touch — Some warmth at the sides is normal on cabinets that use the shell to reject heat.
Causes, most likely first on the ARU line
- Frost blanket on the cold surface — It ranks first here because it is both a cause and a consequence: whatever let the moisture in is still there after the frost is cleared.
- Lid or door seal not closing — Ranked second on this roster: seals fail gradually, which is why the cabinet seems to have been fine until it suddenly was not; the leak has been growing for months.
- Condenser dirty or the cabinet boxed in — Ranked third on this roster: heat has to leave the cabinet somewhere, and a condenser choked with dust or a cabinet pushed tight against a wall gives it nowhere to go, so the machine runs continuously and still loses ground.
- Loss in the sealed system — It ranks last because every cause above it is more common and cheaper to put right, and because getting here first is how owners end up replacing a working cabinet.
- Body: Where this ranking departs from the brand-generic order is frost blanket on the cold surface, which moves up on the ARU line because this roster is two or three closely related cabinets, so the order follows how those particular machines are built rather than an average across the brand.
Check in this order, and why
- Look at the cold surface and measure the build-up by eye — A layer thick enough to hide the surface underneath is enough to explain the complaint on its own. Defrost fully and see whether the cabinet recovers.
- Close the lid or door on a strip of paper and pull — Do it at several points around the opening. Anywhere the paper slides out freely is a leak, and that is where the frost will be.
- Clear the condenser and give the cabinet air on every side — With the power off, clean the coil or compartment and pull the cabinet clear of the wall. Then give it a day before judging.
- Have the circuit assessed rather than guessed at — This needs gauges and a licence. Reaching it is a result, not a failure, because it tells you the decision is repair or replace.
Before you open anything
Safety
Unplug the cabinet or switch off its breaker before removing any panel; a capacitor can hold a charge after the power is off. Never use a sharp tool to break frost off a cold surface: the tubing behind it is thin-walled, and a nicked tube turns a defrost into a replacement. A freezer holds food safely at 0 °F (−18 °C) or below, so move the load to a cooler with ice before you start rather than after.
Models in the ARU family
Reference| Model number | Family key |
|---|---|
| ARU030S1ARSS | arctic-king:freezer:aru |
| ARU030S1ARWW | arctic-king:freezer:aru |
When to call a technician
The owner side of this fault ends at the point a panel has to come off. Defrosting, re-seating a seal, clearing the condenser and giving the cabinet air are all yours and cost nothing. Anything behind a fastener, anything involving the control sensor, and everything on the sealed circuit is a service call.
Nearest pages of this class
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
