Have a 28 year old Kenmore refrigerator, model 8604481. Made in 1988. I'm getting frost over the lower vents in the freezer. The coils and all look fine after taking off the back.
Hello Mr. Groeger,
I was not able to match the model number for your refrigerator, but given the age of the unit, the number may have been discontinued or changed. I am going to assume that the unit has a defrosting system.
If you have it, refer to your owner's manual. There should also be a schematic of the unit attached on the back or near the bottom.
At 28 years old, there could be multiple issues, but if you are handy and familiar with a volt-ohm-meter, you can check some items yourself.
1. Make sure the compressor is indeed running. Before you unplug the unit, check the evaporator fan inside the freezer compartment to be sure it runs. If the compressor or fan isn't running, it's possible that a component in the defrost system is preventing the compressor from running.
-----Turn off the power and unplug the unit to check these items-----------
2. Check the defrost thermostat - it is located in the freezer compartment but will require that remove the back or side panel in the freezer to expose the evaporator coil.
3. Check the defrost timer - they are usually located near the compressor but you may have to hunt a little
4. Check the defrost heating element - it is also located in the freezer compartment and requires that the panel covering the evaporator (coil) be removed. Once you expose the evaporator, it's possible that the coil will be completely iced up which is a symptom of a defrost system problem.
5. Look for any burnt wiring in the freezer compartment. When a defrost thermostat fails they will sometimes burn out.
6. If all these items are ok, you may have to check the compressor circuit or look for a refrigerant leak (if the compressor won't run).
Here is a link to some standard parts for a typical refrigerator. If you find a bad part, you could contact this company or any other you wish. I do not work for this company.
on Jul 15, 2015