Whirlpool 4387913 Refrigerator Compressor Start Relay And Overload Kit OEM Part

Took access panel off the back of the refrigerator with 1/4 inch nut driver and found that the compressor was not running properly (humming and hot but not compressing). The compressor cooling fan was working as well as the fan in the freezer compartment. I fixed the same problem with another refrigerator by replacing the relay and start capacitor on the compressor. I pulled these two items from the compressor connector (gently pry the brown part from the comp terminals first and then the white part.), looked them up at APP and discovered that the parts were called the Overload protection circuit. Both parts rattled when shook and I opened them up to find that the relay (white part) had massively burned contacts, and the black piece had about 20 pieces of an unidentified electrical component contained within. I scratched the wire color on the old parts before I removed them so I would be certain to connect the proper wire to the proper terminal on the new parts. I ordered the parts on Thursday noon and had them via Fed Ex the next day at 10:00 AM. Great service and shipping. I thoroughly cleaned the compressor area, the fan blades and the bottom coil from the back and also from the front of the refrigerator. Cleaning the coils took way longer than the part replacement; but, it is well worth the effort to get the dust and hair out of the coil for better efficiency. Plugged the refrigerator back in and the compressor started normally. Took a temperature reading an hour later and had 6 degrees in the freezer and 44 in the fridge. 5 days later and it is still running fine. However, since the wife already went shopping for a new fridge, she is insisting on replacing it. Some days you can't win, but we will have cold food until the new one is delivered.

Replaced the compressor start relay. Compressor now starts and fridge and freezer nice and cold!! Pre fix symptom: Fridge lights worked, both fans worked, voltage present at the start relay. Easy fix. Diagnosis was the most time consuming, maybe one hour. Fix/repair was about 20 mins. Parts also arrived very fast. Ordered on Monday July 4th, received end of day Wed July 6th.

I removed the compressor start relay, and overload. I discovered the relay contacts were burnt out because it rattled when I shook it. I tested continuity of compressor. I read between 6, and 8 ohms between coils, unit was ok. I replaced start relay and overload, and unit started cooling right away. Be careful to note the wires on relay when replacing since there is no diagram with new relay designating terminal points. Start capacitor is on 1,& 2, neutral on 3 terminal of relay.

New overload and stater installed.

Replaced Start relay and capacitor and it runs like a charm.