Question about KitchenAid KBFA25ER Bottom Freezer French Door Refrigerator
When the compressor starts up the fridge will make a knocking sound like someone knocking on wood or the front door. the knocking is of differing intervals and happens only on compressor start up, and not shut down. i have had technicians out several times to evaluate the problem, and it is always the issue of it not doing it while the tech is there. during the one time the tech was there and it made the noise, he dismissed it as "normal function." i have owned a fridge or two in my life and do not accept this as normal function. the knocking is so loud it will wake us up at night. some observations: 1. it seems to happen more at night than daytime. perhaps this is just due to fact that there is less ambient noise at night - but it really seems worse at night. However, i have been noticing it at all times of the day now. 2. i feel it has something to do with the freon at start up of the compressor - but this is just my supposition. 3. the fridge was laid down flat when it was being carried into the house. i remember way back when someone telling me never to lay something down flat. could that be part of cause for this issue? i am giving up on factory help, please assist me in being able to fix myself. Thanks, Todd.
I have a GE ZIS480D - side by side with compressor on top. It had an even tempo knockng sound coming from comprssor area. I asked my repair guy (at his shop) wat it could be. He shruggs and says "dont know, I'll have to come out and see it for $65." Just give me an idea of what it might be. He says "could be the timer or the motor knocking on something. I'll have to come out and take a look".. I'm a very highend custom homebuilder and have built hundreds of homes with every possible issue imaginable. When a repair guy says "dont know need to see it" it means I have no idea but by the time I leae your house I'll come up wih something. When something doesn't make mechanical sense I just pound on it or give it a good smack. I do it with my truck, my computer, my doors that stick and even sometimes my wife (kidding about the wife, she'd take me out in a heartbeat. Anway, I got up in the compressor ares and smacked it a couple times from every direction and sure enough it stopped knocking. I have been called a genius before but all I do is force into submission and it works. A good smack with the palm of your hand will not hurt the unit. Give it a shot
Posted on Feb 19, 2010
Search google and type why is my refrigerator clicking,most sights say the start relay switch has gone bad.mines doing the same thing,if so its a 30$ fix
http://www.repairclinic.com/SmartSearch/...could be the fanm motor hitting something i suppose or read about
Posted on Dec 12, 2007
I have the same problem with my new Frigidaire. I'm positive on this problem, cause I'm only diagnosing by listening. I really don't think it is a mechanical failure of the compressor, cause it would make continuous noise or random noise, not just start-up. I think there may be something with the new units due to the refrigerant change. Keep in mind; the old freon used to be R12 or R22, the new is typically R134, and likely to use txv type expansion valves as opposed to fixed metering. I think there may be something to do with the performance of that valve. Whether or not it bleeds back on shutdown and then has to fully recirculate. Keep in mind, the R134 has a different saturation pressure/temp as well. Maybe a check valve or even a sump heater may help the problem. Like I stated earlier, this is speculation, since I have not truly diagnosed the problem yet.
Posted on May 07, 2008
This sounds like the unit s low on refrigeration. Sometimes there is a small enough leak that it isnt detectable over time and when the unit gets low on refrigerent *(even new ones) it will knock. The refrigerent often goes through a filter dryer and it sucks the oile down into the compressor on start up. In the meantime there is a small knock for about 30-60 seconds depending on how low it is. once the refrigerant *(which also acts as the compressor lubricant) gets into the compressor it quiets down. You would need a professional to come out and recharge it *(might need a schrader valve installed to do so) that would fix the problem more often than nought.
Posted on May 22, 2013
ToddHB did you ever find out what was causing this issue? It sounds exactly what I am going thru and wondered if you ever figured out what was causing it. I had Sears out and they said it was the new refrigerant and depending on how much refrigerant was needed at the point when the compressor kicked on???
Posted on Jun 23, 2011
I have the same problem with a GE fridge,according to the repair people this is normal in a newer fridge. It has to to with the change in refrigerant, apparently the thermoco-efficiency of expansion is different between the coolant lines and the coolant and when they expand at different rates, they cause a knocking sound.
I haven't been able to co-ordinate a time with the repair people as they want me to take a day off work and sit and wait for them which I won't do.
Sometimes bending some? line works they claim??By the dryer . But mostly they dismiss it as normal and is aproblematic.
I find the noise annoying, but so far no issues with the fridge.
Posted on Jan 02, 2010
That myth about the refrigerator being layed down and not being any good after words is a lie , if its laid down sit it up and let it sit for half an hour before you plug it in to let allt he oil drip down.
Also the noise could be your pistons like tresilla said the springs can come out of place and make a clicking sound , if that is the case ( not sure never herd the sound ) then everything should be fine it's not a big problem.
Posted on Nov 02, 2007
Fault is probably that the compressor is dismounted. the motor is mounted on springs. when laid down flat, motor can come of springs and foul side of casing. no cure except replkace compreessor. nothing to do with freon
Posted on Mar 20, 2007
Tips for a great answer:
Here is a tip that I wrote about dryers and noises...
It will help you determine what is happening there...
Dryer Repair Squeaks, Grinding, Clicking and Knocking Noise
Asker's Testimonial "That answer was very informative - thank you for taking the time to educate me. " - teresa241964
Usually answered in minutes!
Step 2: Please assign your manual to a product: