I wrote 2 weeks ago re fridge buzzing noise - every 3 minutes buzzes for about 6 seconds then stops with a click. Replacing relay switch worked temporarily but it has started again! Fridge runs properly for about 8 hours then buzzing starts on & off for about 1/2 hour. When the original switch was checked at the shop, it was found to be okay. Any other suggestions?
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Re: problem has returned to Maytag fridge
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.
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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 have the same problem. It is ice buildup around the evaporator fan that begins as a buzzing (the fan blades hitting the advancing "glacier"), which ultimately stops the fan and then the freezer/fridge stop cooling. Just pull the lower sheet metal from the inside rear of the freezer (need to remove some screws from upper sheet also) and chip the ice away. I've got a question in to Maytag now to see how to prevent this from recurring. I've had to take the thing apart 3 times in 2 years.
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.
Buzzing is usually a fan, like one in the freezer, or back bottom - for cooling the freon. The compressor over-heat usually will make a single click (off) and a few minutes later a click (on). If the fan in the freezer stops working well, the freezer will frost up and the fridge section will not be cold enough.
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.