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      ***READ THIS PRIOR TO STARTING A NEW TOPIC***   05/02/2016

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etherist

Kitchenaid 42" built-in fridge starts and stops constantly

9 posts in this topic

Hi, y'all

I've got a 42" built-in fridge, model #KSSC42QTS02

It runs all the time, or nearlt all the time. I gather that's normal?

What worries me is that it cuts off and on constantly. Sometimes it will run for 5 seconds, then cuts off for half-second, then back on for a minute, then off for 30 secs, off, on for 2 minutes, etc. Maybe it has always dont this, but I notice now because every time it restarts it makes a little chirp like a frog peeping.

Is this normal for a fridge like this? It cools fine. I have the freezer on 4 degrees, fridge on 37. Keeps things plenty cold.

Thanks for any help

Oops I mean Kitchenaid. Brain fart.

And is it possible to clean the coils?

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Need appliance parts? Call 877-803-7957 now!

that's a Fridge with an Inverter / Compressor

You'd need the service manual if you were going to diagnose it.

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Does it by chance have a variable speed fan motor and a variable speed compressor. Sometime they will seem like they are running constantly and turning on and off. But they aren't, they're just slowing down and speeding up.

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I just took the upper cover off and watched for a while.  The fan is turning, then it stops for a half-second, not even to a stop, then immediately starts back up again.  Each cycle is a random length.  Just now when I was watching, it cycled for 15 seconds, then 2, then 30, then 5, then 5, then 10, then over a minute, then 5 seconds, then whatever.  It's constantly clicking on and off.

 

If y'all think this is something I can do myself?  Is there an easy part swap that might do it?

 

Or should I just wait for it to fail?  That seems like the wrong approach.  But what I'm afraid of is to pay $100 for someone to come to the house and tell me "nope, they all do that, get used to it."

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Open the doors for a few minutes to let both compartments warm up.  Then put the control into Max Cool mode.  The freezer should display -10F and the refrigerator 32F.  The evap fan motor should run at full speed and steady for more than an hour.  Report.  

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As long as the unit is cooling properly and the control is displaying the correct temperatures you should be ok.  The condenser coil is accessible for cleaning by removing the front grille.  Doesn't sound like there is a problem with the Gemini or Niagra control boards in the upper unit but you can manually reset all controls by turning the entire unit off at the master on/off switch for 5 minutes and then back on again.  There is a 6-7 minute delay for the compressor to restart and then should run normally.

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It sounds like the main control is dropping voltage to the condenser fan at times. Does the compressor continue to run when the fan quits? If so it may have a bad board.

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Thanks for the diagnostic tips, have not had a chance to try those out yet.

 

Spannerwrench: I can't tell if the compressor keeps running after the fan stops, because the fan is basically always running.  When I say the fan "stops", it's for about half a second - the fan slows a little, but then it clicks back on right away.

 

I did use an infrared thermometer today to verify.  The fridge has been set to 37F in fridge, 4F in freezer for sevreal days.  Measured temps were 36-37 in fridge, but way too cold in freezer: -6F to - 12F.  The freezer is pretty full, but not so full that it is restricting airflow, I think.  I will beg my wife not to restock it quite so aggressively and see if the freezer side stays that cold.

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The fan can stall and then start right back up. But the compressor can't, if it looses voltage temporarily it wouldn't start right back up.

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