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Question DetailsAsked on 1/9/2018

what could cause a high pitched whine noise in dishwasher? It only seems to occcur when water is entering unit.

no other faucets make this noise.

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Check where it is occurring - could be a partly clogged valve or inlet hose whining, though that is rarer - but some of the cheap inlet shutoff valves (where the hose comes off the pipes under the sink) corrode up and start rerstricting the flow, causing cavitation (bubbling) in the water, which is probably the noise you are hearing.


More commonly - the inlet control valve on the bottom of the dishwasher is building up lime, or isnot fully opening or closing, causing a "valve howl" as the water passes through a restricted opening. Could be because of crudding up of the valve itself, or the solenoid which commonly is used ot open it not opening all the way anymore as it gets old.


Because of the low cost of parts versus the labor "repair' is not something I would recommend - I would just have the offending part(s) replaced- typically probably about $25-50 for the part (valve with solenoid mounted on it), labor typically minimum service call charge for a tech - commonly around $75-150 for up to an hour's work. Appliance Repair - Large would be the Search the List category for this.


Describe the issue to the vendor when yuou call, and have make/model/serial number at hand. Hopefully they can bring the part with them (assuming the inlet valve is the issue) and avoid having to make a second trip with the part, which sometimes is charged for additionally.


Bear in mind the cost of a new dishwasher - you don't want to put more $ into it than it is worth. For instance, a new economy but decent dishwahser is commonly about $300-400 and may times comes with free installation - so if yours is pretty old (say over 10-12 years) you may figure paying half to two thirds the cost of a new one is not worth it. Of course, if you are into pricey dishwashers, then a repair is almost certainly worth it unless yours is pushing 20 years old or so.


Pay attention, if getting a new one, the opening dimensions for it - because many times the "standard" size cabinet opening has been cut down by surrounding trim or flooring put in after the dishwasher, so getting the old one out of a new one in can sometimes be a real pain and involve as much cost as the new dishwasher in some cases.


Of course, if it has been blocked in by new flooring or such that also affects the cost of getting the old one out for repair - it is not uncommon to see cases where new flooring (say tile or stone replacing linoleum) has reduced the opening height so much that, short of cutting away or removing the countertop or tearing out the flooring, the only solution is taking a sawzall and cutting the bottom of the frame off the dishwasher or cutting clear through the tub to bring it out in pieces. If going to have to go to that trouble, of course that might make the decision of having to go to a new unit.

Answered 10 months ago by LCD




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