Question about Bosch Washing Machines
Noise on fill or when cycle is ongoing before wash cycle/modeas far as i can tell. Its a Bosch SMS50T02GB/40. I have already removed and checked the drain impeller pump and made sure no obstructions in the main body of the unit. During the rest of the cycle it is silent running - is there a solenoid or valve that changes direction or something that could be making the noise as it reverses flow or something like that? UPDATE: I found a related post on here that pointed me in the direction of the spray arms. I removed the upper spray arm - noise goes away. Put it in again - noise comes back. My only question is this: by removing the spray arm, i reduce the incoming pressure...the noise is loud enough to be more than plastic and there are no moving parts other than the spinning arm. Could the noise be related to a pump that is straining to get the water up to pressure when the upper arm is in place? If so - which pump would this be please? Thanks for your views
Washer may need descaling use a good cleaner at high temperature without a prewash minimum 75’degrees
Posted on Sep 24, 2019
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Posted on Jan 02, 2017
It could be the impeller on the motor. The impeller fits over the shaft of the motor and might have split/broken up. That funny noise is probably the shaft spinning inside the damage impeller. Fortunately the impeler is fairly inexpensive and easy to replace. I believe there are one or two parts/covers to remove that are held in by a roughly half dozen torx screws.
Posted on Jan 10, 2008
Try looking for slithers of glass etc under the impeller. Remove the sump covers (filters) and look into the bottom. There will probably be a small cover held down by a screw. Under this is the impeller. Roll up a hand towel into a cigarette shape and slide this under the impeller - that should clear anything out.
Posted on Apr 17, 2008
your model is pretty new. just so you know your warrenty is 1 year parts and labor. 2 years on parts. it should not cost that much money.
there are two components that start before the circulation pump.(wash noise you hear)
first sounds you hear will be the drain pump. usually rattling noises if something is in it but it can make a hum noise if something is jamming the drain propeller up. which is accessible with a T20 torx driver. take the filters out and the mesh filter. and unscrew the screw in the base towards the left. pull out whatever is lodged.
the other humming sound can come from the next component that activates is the watervalve. make sure you dont have a kinked water intake line. otherwise its a bad valve. i have had to change a few of those water valves out already but not for a hum noise on your model. you have a new style water valve. when brands make new parts we get problems fast sometimes..
Posted on Mar 19, 2009
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