Kenmore refrigerator adaptive defrost timer fix. Part: AP4909015

[connorcc2005]

I have a 20 year old Kenmore side by side refrigerator that was acting up with the following issues:

• Evaporator coil in the freezer was frozen up.
• Unit was still holding temperature
• Evaporator fan would run 2 to 3 seconds on then shut off only to repeat.

Defrosted the evaporator coil and began testing. Defrost heater ohmed out good. Defrost thermal switch on the evaporator line in the freezer tested good. Once the evaporator coil was defrosted, the freezer and fridge worked but the fan continued to cycle on and off continuously. I suspect the evaporator coil was destined to freeze up again so I kept looking for a problem.
Pulled the adaptive defrost controller board, part number AP4909015, located in the upper left of the fridge compartment.
Found the cap below and suspected it was defective due to the buldging on the top. Removed it from the circuit and tested the cap. A 1000uf, 10 volt cap measured 289uf, way out of tolerance. Replaced the cap and all is well.
Thought someone might find this helpful.
Best regards.

[redwire]

Thanks for the good repair info.
Frigidaire 5303918476 (kit) is discontinued, no longer available. Jerks.
Used on many different makes/models. Also known as: 241508001, PS2582247, 5303918302, 5304429380, 240375803, 240554501, 240554502, 240545403. AP4909015 (Appliance Pro part number).

Strange- there are many, including cheap chinese versions, of the same board out there. The relay is 48VDC coil.

To repair Frigidaire 5303918476, replace capacitors. {adding that for the seach engines}