The short answer
On the Aviva ARBM models this page covers, frost and ice are a symptom of moisture entering a cold box, not of the cooling working too well. This is a cabinet whose cold is made in the lower freezer compartment and moved upward into the fresh-food space through a duct and a fan, so the entry points are few and they can be checked in order in an afternoon.
What you observe on these models
- A sheet of frost on the rear interior wall — A sheet rather than a dusting is the airflow-closing kind, and it is the version that ends as a temperature complaint.
- Ice at one point of the door line — Ice concentrated at a single point on the seal is a map: the air is entering exactly there.
- Ice under the lowest shelf or basket that returns after clearing — Meltwater that cannot leave.
- NEAR MISS — no ice, but the cabinet will not hold temperature — That is a cooling-failure page, not this one.
Causes, most likely first on ARBM
- Airflow blocked by the load itself — Bottles or packages against the rear wall create a cold pocket that ices while the rest of the cabinet runs warm. A package against the duct opening freezes and blocks the supply at once. Ranked first here rather than further down, because a bottom-mount refrigerator line gives this cause more opportunities than any other on the list.
- A defrost cycle that is not completing — Frost that returns as a sheet rather than a dusting means the cycle that should clear it is stalling, and the sheet closes the airflow path down as it grows. Ice at the shared evaporator starves the upper compartment first.
- A door seal drawing humid room air — Warm room air meeting a cold surface deposits water, and at these temperatures that water becomes ice at the point of entry — which is why the ice is always worst nearest the leak.
- The ice maker, on the models that have one — An ice maker that has stopped is a fill, a freeze or a harvest problem in that order, and the models in this family that lack one make this question moot. Last on this list, and the item that every cause above it can imitate exactly.
Check in this order, and why that order
- Clear the ice completely, with the power off, and note the date — You cannot diagnose ice you cannot see the growth of. Defrost with time rather than heat, and never chip at it — the tubing under the surface is thin-walled.
- Check the seal at every point of the door line — A strip of paper closed in the door and pulled at intervals will find a slack point. On a glass door, check the hinge side, which is the side people never check.
- Find and clear the drain — The freezer drawer or door and the rear interior panel behind it, with the machine pulled forward far enough to reach the base bay. A drain that has blocked once will block again, so clear it properly rather than poking at the opening.
- Read the set point and ask what the cabinet is actually for — A cabinet set colder than its load needs will frost regardless of its condition, and the fresh-food space is downstream of the freezer, so it is always the compartment that shows a fault first and the one that recovers last.
Before you open anything
Safety
Unplug the appliance or switch off its breaker before clearing ice or removing any panel. Never chip, lever or heat ice off an evaporator or an interior wall: the tubing beneath is thin-walled and a puncture ends the cabinet.
Models this page covers — the ARBM family
Reference| Model number | Family key |
|---|---|
| ARBM115SB | aviva:refrigerator:arbm |
| ARBM177SE | aviva:refrigerator:arbm |
| ARBM184FSE2 | aviva:refrigerator:arbm |
| ARBM184FSE3 | aviva:refrigerator:arbm |
| ARBM187** | aviva:refrigerator:arbm |
| ARBM188*E4 | aviva:refrigerator:arbm |
When to call a technician
Call when ice returns quickly after a full defrost and the seal, the drain and the set point are all ruled out, because at that point the defrost arrangement or the sensor that governs it is the remaining candidate. Call immediately if you find ice where a line enters the cabinet, or if clearing the ice has exposed damaged tubing. Before ordering anything, match the plate against the ARBM variant table above. The family is a bottom-mount refrigerator line, and parts that look alike across a brand's other lines often do not fit it.
Other problems covered for the ARBM family
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Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
