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Re: buzzing noise from compressor start relay
Sounds like your compressor is going bad, getting to hot , pull the unit from the wall and cleanall vents under and behind rear cover, make sure fan is running ot cool of the compressor, youll have 5 yr coverage on your compressor if needing repaired
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Compressor problem. There are start components mounted on the side of the compressor, and should be removed and tested. The parts include the start relay, (start/run capacitor if it has one) and the overload switch. To test these components you must have a working knowledge of electrical an use of a good VOM meter. If not, remove the parts, and take them to an appliance parts house. They usually are happy to test them for you. If they test O.K. you have a failed compressor. P.S. If this machine is under 5 years old, the compressor is under warranty, (some have an extended 10 year warranty). if the warranty is in effect, do nothing. Call the dealer who would handle the warranty. You would have to pay for replacement of the start components, but having it serviced by an authorized warranty station will keep the balance of the compressor warranty in effect. Hope this helps... Jack
I would check for a bad starter relay first unless you can verify that the sound is comming from the compressor. How to check stuff>
You have one of two problems going on. Your fan is spinning at hitting the sides. Or your compressor is shot which seems to be more the problem and even though it is cold the humming sound is a warning for you that the compressor is shot and it is more affordable to replace the fridge then the compressor. Sometimes compressor can cost more then the fridge.
The black ball you are reffering to is the compressor.It is trying to start..that is the buzzing.The start,and overload relay is probably bad..hopefully.Because if it isn't the compressor may be bad.Where your wires plug into the compressor...this is the relay.it should come off fairly easy.It is much cheaper to replace this part..than buying a new fridge.For instance i buy them for g.e. refrigerators all the time from an appliance repair shop at cost,and they are less than 4 dollars for me.So I assume they aren't too expensive retail.
I note this is a very old post. The compressor is not starting and what you were hearing was the PTC relay energizing followed by the KilXon thermal overload kicking off the compressor start sequence. What happens is that the PTC relays sometimes get a heated contact. Due to the weakened state of the contact it can cause a buzz. Even with a goo PTC relay you would hear the compressor buzz if it was not starting. In that case the run capacitor may have failed or the compresor rotor is internally locked at which point the start cycle will repeat every 3 to 4 minutes as the thermal overload cycles and the compressor will not start.
The only thing a capacitor does is 'kick' the compressor to start it. There is a box on the compressor containing the start relay. If it is defective or dirty, it might buzz. With the power off, find it, remove its cover and use some canned air to blow off any dirt inside. If that doesn't fix it, replace it. If there is a fan down there, be careful...and be sure it is working.
It will rattle slightly, this is normal. The ones that are burned out will sound like they have gravel in them, you can defininely tell something is wrong.
The problem with diagnosing Kenmore fridges with this problem is that there are different manufacturers. Yours is built by Frigidaire and probably has a Tecumseh compressor. We find more failed compressors with the Tecumsehs than we do with the models that have Embraco compressors. The models with Embraco's generally have more relay failures.
You should not hear the buzz/hum at startup. You will need to replace the compressor, which will be replaced at no charge to you if it is less than 5 yrs old.
If it is older than 5 yrs, you can have it replaced, but it will be almost as expensive as a new fridge. You can buy an aftermarket start device called a 3-in-1. This has a start capacitor built in to give it a little more boost on start up. I don't recommend using them unless it is a short term fix until the compressor can be replaced or if it is out of warranty and there is nothing to lose anyway.