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Re: loud banging nois when compessor shuts down
The banging noise usually occurs when the internal mounting springs are weak. You cannot get to them, they are internal. This causes a banging noise when the fridge comes on or switches off. It can also happen when the starter relay on the compressor makes a bad connection and therefore the compressor does not get immediate good power causing a stutter.
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Where is the noise coming from? The front, back, top, or bottom? Is it a bump, thump, bang, clang, or rattle? Does the sound happen at regular intervals or randomly? It could be the compressor bushings going bad, causing the compressor to bang around.
is it shutting off when it makes that clunking noise? if so, thats the compressor making the noise. the motor inside the shell casing, which is suspended on four springs, is banging agasint the shell casing because one of those springs has stretched or broken. You need to replace compressor. if its been happening for a while, i would start looking for a new model. if its more recent, and not very loud, you haver more time, but in either case, it could just cease up at any time. to hgave your compressor replaced, and unless your an HVAC tech you should most assuredly NOT do it yourself, its quite expensive, at or near the cost of buying a new one.
The compressor is that black casing you see at the bottom of your refrigerator - inside this sealed case is the motor assembly which stits on 3 or 4 springs that act like a cushion - you have a little gap at the bottom where the lubricating oil is present. Your springs have likely worn out and when the compressor shuts off the assembly is banging against the rigid casing make that loud "klonk" or bang noise. It IS normal for compressor to make some faint "tick-tick-tick...tick.....tick" when shutting off, but loud banging, bell sounds, etc, means the assembly is banging on the case from the inside - you can indeed live with the noise, your compressor will function normally, probably for months, or even years - it can also keep wearing out and one day the noise might get very loud (like a very high humming noise) - There is NOTHING that can be fixed, you either pay $400+ to change the compressor or buy a new refrigerator - If you DO replace a compressor usually the replacement will be noisier - Keep a thermostat inside your refrigerator at all time to make sure your compressor is still keeping your refrigerator and freezer cool.
Check the compressor mounts. They are usually springs mounted with rubber. If they are two loose the compessor wil hit some other metal part when starting up. Shakle it and see what it is hitting. Ajust accordingly.
the support spring that hold the motor in place inside of compressor has failed so when the compressor stops the motor bangs off the inside of the steel shell of the compressor. the only resolution is to have the compressor replaced
TD, sounds like your valve springs in the compressor let loose and it's banging on the side when shutting down and equalizing. The compressor has a 5 year warranty. This is more annoying than anything. If it's under warranty, have them replace it. If not, it's up to you whether you want to live with it. Catriver.