I’ve attached 3 pics that shows what I’m dealing with. In the first pic after a little melting already being done, I only had ice forming on the top half of the coils, and only on the left and right side. Pic 2 shows a little more of the coils and melting has been almost complete. After I melted all the ice and turned the freezer back on, in less the 2 minutes you can see the ice starting to build up on the coils again as shown in pic 3, in the same area.
This has been going on for the past 2 years and have only melted the ice now 3 times off of the coils. Just wondering if anyone can help as to the cause and if this is a fix that I might be able to handle.
I’m definitely not an appliance expert, but it seems very similar to the symptoms of a bad door seal. In order for your coil to make ice, it must have water which it draws from the air. Also, if the unit is empty, it will do this faster since there is more air to cool, so more moisture to remove.
Hard to say exactly what is going on when looking at your first picture as I do not know how far along in the manual defrost it is.
The last picture looks like normal frosting up to me.
I would say that you have a defrost problem.
Also make sure that the evaporator fan is running.
Let the unit frost up and then force a defrost cycle.
Be careful that you do not burn your fingers when checking the defrost heater.
It must be frosted up because the defrost thermostat opens just above freezing and it kills power to the defrost heater.
If the defrost heater comes on then I would replace the adaptive defrost board as it is not automatically starting defrost cycles.
If the defrost heater does not come on, unplug the unit.
Check the defrost heater with a meter, it should be about 30 ohms.
Check the defrost thermostat, it should be 0 ohms when frozen.
If both are OK then odds are that the defrost board is bad.
You could check the defrost wiring from white to pin 4 (brown) on the adaptive defrost board.
About 15 minutes into defrosting. The coils in the front were not iced up but that thing above the coils wrapped in this gray putty with copper tube was covered partially with ice. Not sure where the evaporator fan is, but if that’s the unit on top of the picture, than yes it does run. How do you force a defrost cycle ? Where would I locate the defrost heater ?
