Soak the wash arms in vinegar and baking soda overnight to remove mineral deposits. I’ve put everything I can think of in the article. I've managed to clear some large obstructions by shoving the end of the drain hose onto the cold tap at the sink and turning on the water. (no spinning or dripping water from anywhere) Is there a way that the arms might have been disconnected? Wow, thanks for the swift response. A button of a specific size could be small enough to get past the pump and into the drain hose, but be too large to pass through the drain hose or through the plastic spout on the u-bend that the drain hose may be connected to.This could completely stop water from being pumped out, or it could even manifest as an intermittent fault. Then another small resistance needs overcoming before it jumps round again. When swivelled round one way water can get past, but then the water flow can swivel it round again so that it stops the water flow. Find out what’s going on. Use the #15 Torx bit to remove one screw that holds the chopper assembly cover in place. The pump itself is faulty If the impeller is broken it could be spinning on the shaft. With a #20 Torx screwdriver or bit if you’re using a drill, remove the four Torx screws that secure the coarse filter in place. Use a shop vacuum to completely vac out all food particles and debris. The dishwasher is leaking. After reading this advice, moping up a very wet floor from checking the filter. Test the door and selector switches with a continuity or multimeter tester. I found that the impeller was clogged with a lot of debris includin a small chicken bone. If you tried the steps above and the dishwasher still does not work, it is likely one of the mechanical components is broken. This one is likely to be rare, but worth mentioning. 02:20. And you’ll probably need a qualified technician to carry out repairs safely. When your Bosch dishwasher detects a problem within the system it will display an error or fault code. I found a hair band stuck round the impellor I was able to free it and test wash says it working. I read and tried everything in you article and my washer still drains slow enough to get the error code. Advertisement. Theres a (grey) flat pipe coming up back inner of dishwasher called feed pipe, it has 2 wings/guides, if one or both of these are bent it will prevent the top basket going back far enough to locate properly & poor water feed to top spray arm. I removed the drain hose from the sink and there were no clogs. Hi Neil. Upper spray arm does not spray. The main tub is a large tub that holds a majority of a dishwasher’s parts. They used to screw on (left hand thread) but chances are they are just force fitted on now and if one has come off it’s unlikely to fit back. These arms are situated below the top dish rack at the top of the dishwasher tub. Rubber bands and similar can wrap around the impeller restricting its movement. During the cycle, the arms at the bottom of the machine begin to spin, spraying water and soap around the unit to clean dishes. I ran a fish tape through the drain hose and found no obstructions. Having dishwasher issues? In other words although the pump rotor is spinning it is not turning the impeller that forces the water out or due to slippage on the shaft it is not turning fast enough. If the drain pump motor is not working, the dishwasher won’t drain. What can I check or do before calling a repair person? Joined Oct 14, 2010 Messages 23 Location union. After some struggle and determined investigation he eventually discovered that one of the suspension springs on his Hotpoint Aquarius washing machine had broken (under the lid). Show More. I took the bottom tray out and remove the plastic cover that houses the impeller (three torx screws). And if you live in an area that has high amounts of minerals in the water, that, too, could clog the wash arm jets. These days they are normally press fitted on. Just a simple troubleshoot, I started the top rack wash only and set the arm in position, waited about ten minutes into the wash cycle, and the arm was in the same position. Reach into the dishwasher to release a tab that holds the remainder of the wash arm assembly to the water distribution tube. Reinstall the chopper cover. Tips and some troubleshooting measures are also included. Spinning arm issues can be fixed, but it also might indicate a problem with the unit's timer motor. The pump could sound like it's running but in fact it is not revolving at speed inside, however, I would expect it to sound different to normal. The circulation pump motor relies on an impeller to move water through the wash arm. 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