frozen freezer warm fridge

Refrigerator & Freezer Repair
1

1.- Defrost Heater replaced. Old one didn’t have continuity.

2.- Defrost timer manually set to defrost cycle. Heater did not get hot. So I replaced defrost thermostat (store salesman sold me a cheaper and different brand) Defrost timer set to defrost cycle, heater got hot again for about 20 minutes then went to cold cycle!

3.- Defrost thermostat worked for 3 days, but eventually ice built up took over and the problem come back.

4.- I bought from you guys a genuine thermostat thinking that this must be the problem… I installed it and tested it by turning timer to defrost cycle but heater didn’t get hot. (I tried it with and without ice)

5.- D. Timer and both fans are working fine. Freezer gasket look in good condition. Any ideas what could be causing the problem?

3

HI.

Turn the defrost timer to defrost, unplug the unit and check continuity from cold control to the defrost timer leg#2.
No continuity - check the harness, connections, all defrost components. According the wiring diagram there is the defrost fuse inline with defrost heater and thermostat.

Here are the breakdown diagrams and http://www.appliancepartspros.com/partsearch/model.aspx?model_id=5170334

Thank you. Post the results.

Simon.