In article ,
Peter Aitken wrote:

Then you measured the temperature wrong. Please explain how going from -20
to -19 can remove frost.

It doesn't - the frost is outside the freezer compartment cooling the air
that is blown into the freezer isn't it??

Just because the cooling unit is warmed up to remove the frost doesn't mean
that the main compartment containing the food is.

And, IIRC, freezers are designed to operate at about 0 degrees, not -20
( I assume you mean f).

Eh?

Darren