Hi Firbel,
Thanks for your reply. The freezer is in the house - actually in an upstairs room which is unheated but not cold. When I said yesterday that it was the top RH corner of the grill, I was having a senior moment. It is in fact the top LH as viewed when standing in front of the open door. We have the door hung with RH hinges, so the ice forms in the area first opening.
Since writing we have emptied everything out, cleaned everything, sponged out the condensation collector / evaporator on top of the motor, and manually defrosted the fan grille with a hair dryer. It was solid with ice! Now put back into use, but appears to be stating to ice up again. We did not have this problem (or did not notice it) for the first 18 months of ownership. Maybe your heater timer / circuit theory is correct and this goes faulty after a while?
The door seal is very poor. The magnetic attachment side of it seems ok, but the bulb shape rear which is supposed to attach to the door is hanging off in places. The reason for this is that the door lining contains the receiving groove for the door seal. However the door lining is a vacuum forming and the required undercut to form a dovetail to hold the door seal, is so poorly manufactured that the seal will not hold as a push fit. So the manufacturers have glued it on (in places!) with silicon mastic. This is failing and the seal is coming away from the door in places.
I intend to remove the door, clean out the groove and re-glue the door seal tongue back into the groove with a high quality silicon glue / sealer with a continuous bead.
But I'm not convinced that this is the root of the icing problem.
Any help would be gratefully received.
Crosschris
