You will need some skill with tools and knowledge of how your dishwasher operates. First, you will need to remove the back or front panel on the door. This will depend on the kind of dishwasher you have. When opened, look for a metal or plastic arm coming from the dispenser to a motor or gear. This is usually the problem and can be purchased from this site.
SOURCE: Bosch Aquasensor Detergent Dispenser door wont open during cycle
Behind the dispensor door there is a small selanoid you will need to replace this, test to see if its open circuit, alternatively you can just place the detergent in side the machine before you put it on a wash cycle is this would have the same effect. the only cycle you can not do this on is the one with the prewash, I think its number 1.
SOURCE: Detergent will not dispense during the wash cycle
Something simple you can check is to make sure the spring that flips open the door is not broken or caked up with detergent.
As for the soap not dissolving, I've had similar problems and the only solution I've found is to make sure you are not blocking the spray jet on the bottom from hitting the soap drawer.
SOURCE: miele G660 premier dishwasher
There is a solenoid that opens the door to the dispenser. You can check it with a volt/ohm meter. Sometimes large dishes can block the door keeping it from opening. I personally know on some Whirlpool washers (because it was mine) that if the bottom drawer is put in backwards, it wont let the door open. When I opened the main door, then the dispenser would flop open. You need a meter to check this part if its not the other things. Without it, you are just guessing.
SOURCE: Bosch diswasher detergent dispenser doesn't open during wash cycl
I've been told we can replace the dispenser. See AppliancePartsPro.com. Part AP2834000
SOURCE: Dishwasher 3 in 1 detergent tablet not dissolving.
I believe that the instructions for using these 3-in-1 tablets is to place it in the open dish detergent cup, rather than in the closable compartment, since the tablet needs to get doused by a lot of water in oder to fully dissolve and be effective in getting the dishes clean.
Since the tablets are designed to dissolve more slowly, they are able to be used for the entire range of washing cycles. If it's a constant problem and you don's have an open detergent cup below or next to your closed detergent dispenser, just toss it into the bottom of the dishwasher instead.
The reason that the tablet isn't getting dissolved fully is because the door is preventing the tablet from dropping all the way out and the door is shielding the tablet from quite a bit of water spray.
Another option is to take a look at your owners manual for the dishwasher and see if they recommend these all-in-one tablets versus regular powered detergent and liquid rinse aid.
Hope that helps and best regards!
Hi,
There
are three common problems that cause the Soap Dispenser or Cup not to
open. I have a tip that will explain these problems in
detail....
Dishwasher Repair Problem Detergent
Cup does not Open
heatman101
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