Frost, ice and water
Frost Sheet on the Freezer Back Wall
Frost across the whole rear wall, coming back however often it is cleared.
Viking Repair Service Los Angeleson site 8am to 8pm, every day of the weekcalls picked up 24/7
| What you see | Likely cause | Safe check | When to call |
|---|---|---|---|
| A hard sheet over the rear wall, back within weeks of clearing | The heater that clears the coil each cycle, or the part that decides when it is warm enough | Clear it once, date it, and see how long the rear wall stays clean | As soon as it returns |
| Frost and a freezer that has also gone soft | The control that arms the clearing cycle is no longer calling for it | Note whether the softening came before the frost or after | Today. Both symptoms together move it up the list |
| Frost heaviest nearest the door, light at the far side | Humid kitchen air tracking past a seal and freezing where it lands | Run a hand along the closed seal for a cool draft | This week |
| Frost, plus ice collecting on the freezer floor | The melt water from each clearing cycle is not getting away | Look for ice pooling under the bottom drawer as well | This week, before it reaches the door |
The table above tells the two kinds of frost apart: the light bloom that belongs there and the hard sheet that does not. Row one is the usual finding behind a sheet that returns. Call Viking Repair Service Los Angeles at (213) 799-7879 once you have cleared it twice and watched it come back.
What the sheet is telling you
Rows one and two are the same system seen from two angles. A built-in freezer clears its coil at intervals so that ice never insulates the surface doing the cooling. Two things can stop that: the part that does the warming, or the part that decides a cycle is due. In either case ice accumulates where the air should pass, and a Beverly Grove galley kitchen usually notices it as a freezer slowly getting less roomy.
Where the moisture comes from
Rows three and four follow the water rather than the ice. Moisture arrives either from room air slipping past a seal or from the food itself, and once it has been frozen out it has to leave as melt water. A seal that has hardened keeps feeding the wall; a drain that has iced sends the water back onto the freezer floor. Both are worth noticing before the visit, because each points the repair somewhere different.
Normal, not normal, and the line between them
-
Normal
A dusting on packages and a light bloom where air enters.
Not normal
A continuous white sheet you would have to chip at.
Time to call
Once it has rebuilt itself after a clear-out.
-
Normal
A little more frost in a humid week with the door in use.
Not normal
The same heavy build in a dry week with the freezer barely opened.
Time to call
This week.
-
Normal
A freezer that holds everything hard despite some frost.
Not normal
Frost and softening food arriving together.
Time to call
Today, once both turn up together.
A little frost is a freezer being used; a sheet that rebuilds itself is a cycle that is not running. Call Viking Repair Service Los Angeles at (213) 799-7879 and describe the row you are on — that sentence is worth more than a guess at the part.
Safe checks before the visit
-
Clear the wall down to the surface, note the date, and leave it. How quickly the sheet rebuilds is the single most useful thing you can tell the technician.
-
Run a hand slowly around the closed door seal. A thread of cold air escaping marks where humid room air is getting in to freeze.
-
Check the freezer floor under the bottom drawer for ice while you are there. Frost above and ice below is one fault, not two.
-
Stop there. Nothing further is an owner job on a built-in: the sealed circuit, the wiring behind the grille and anything that needs a panel off belong to the visit. Call Viking Repair Service Los Angeles at (213) 799-7879 and say which of the checks above changed anything.
Asked about this one
- Can I just keep scraping the frost off?
- You can, and people do for months, but it treats the symptom. Every sheet you clear is heat the coil could not pull out of the food, so the machine runs longer and the freezer holds less. The defrost side is quoted from the fan and defrost band, and clearing frost by hand is the more expensive habit over a year.
- Written by
- Ambrose Fitzwilliam
- Role
- Service technician — refrigeration and sealed systems
- In the trade
- 25 years in the trade