Compressor makes "clunking" noise when it turns off
Every once in a while the compressor on my 12 year old GE Profile side by side makes a clunking noise as it shuts off. Sometime you don't hear it for a week or two and then some days it clunks every half hour or so. Is this terminal?
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If this noise happens when the compressor turns on and shuts off it is called a compressor knock. All the internal workings of the compressor are supported by springs, over time the springs wear out and become weak. When the compressor stops or starts the tourq causes the internal parts to hit aginst the casing of the compressor. Sounds like a clunk clunk clunk noise. If you can deal with the noise do not go out and replace the compressor cause it will work just fine like that.
The compressor, which is the heart of the sealed system, is that big black steel ball in the back of the unit. Inside is a little pump that is suspended by three or four springs. One of your springs is broken, and when the compressor shots off it bangs against the inside of that ball. A replacement compressor is no longer available, and even if it were, the repair would cost would be too much to put into a 15 year old unit. ($600-700 min.) There's no way to tell how long it will run. I've heard stories that ranged from days to years. This should give you time to do a little research on a new unit, and formulate a plan for immediate food transfer if it fails. There are a lot of sources for the research, but I always suggest people call a couple of service centers that are factory authorized on several brands. You can usually catch a road tech in the shop shortly after opening time, and they will have an opinion to share. I favor the plain jane mechanical twist-the-knob thermostat vs electronics, no water/ice, thanks. But that's just me. Also check the warranty. Most have gone to the one year and then you lose. Extended warranty? More research there.
The compressor is sitting on springs inside a metal case. When it stops, the centrifical force is absorbed by these springs. If one or more springs become weak or break, the compressor hits against the outer case a time or two. (CLUNK CLUNK clunk) There is really nothing you can do about it, short of replacing the compressor. (read big bucks) NOTE: If you take a new compressor and give it a shake, you will hear the same clunk. If the noise is really bothering you, I'd say after 15 years, it's time to move that refrig to the basement and get a new energy star model for your kitchen. (the old one most likely has several more years worth of clunking before it truely dies)
Good day, If it makes the clunk or banging noise when the compressor is shutting off, then yes, internal spring or springs inside the compressor have broken. Only solution to that problem is a new compressor. P.S. these things can run a long time with this condition, but ultimately .....
The compressor has 3 or 4 internal motor support springs . Over time , one can rust , due to the contaminates in the refrigerant system . One of them can break free , which will not cause any damage , other than a clunk , when the compressor cuts off . You can still have many years of correct cooling , only the noise will be present .
It is probably caused from one or more of the four rubber bushings that mount your compressor to the refrigerator frame. The bushings wear over time and causing the compressor bracket to have a little play. Then when the compressor stops it moves the frame slightly bumping against the mounting bolt causing a slight to moderate sounding clunk when stopping, Also check a lines and cords as a cord refrigeration line near the compressor or fram can also cause the problem.
I believe that because defrost is done by the mother control board this is why this is happening the part of the board that controls defrost is malfunctioning and the only way to resolve the problem is to replace the mother board part number WR55X10656 You can find the replacement board at these places below. Sea Breeze
You should check the compressor compartment and see if the fan motor (if it has one) is hitting something. Possibly a dead mouse?( I have seen this before) Also check if compressor mounts are secure. Hope this helps.
My GE Profile about 15 yrs old is also clunking.. fixed about 4 yr ago and doing it again.. Think the compressor motor is loss and when it shuts off it vibrates.. any other solutions please post if you had it fixed..