The compartment where the dishwasher tablet goes in doesn't always close.

Beata, Check the attached links,
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Most likely it's a corroded door catch or a bad solenoid. Hopefully it's not the main control board. You'll need a repair manual or technician. A work around would be to use detergent tablets in the compartment

Hi,
There are three common problems that cause the Soap Dispenser or Cup not toopen. I have a tip that will explain these problems in detail....

Dishwasher Repair Problem Detergent Cup does not Open

heatman101

If it is falling out then the compartment is opening. But now for you to say that it is unused, is another issue! If you have water spraying normally in your unit, it should show on the tablet even if it isn't completely used up.

Have you tried the powder? What does it do?

Hi

Dishwashers use Bi-Metal strip to allow the dispenser to open/close. This strip when heat up causes the soap door spring to open up the dispenser. If this strip is not heated doesn't allow the door to open. The strip may not be getting 120V or maybe disconnected. Newer (plastic liner) dishwashers use a wax motor to open the soap dispenser. The plunger inside the wax motor slowly moves and pushes the plunger and door open. And, if this wax motor doesn't receive 120 volts, then it'll not work. Please check the voltage to the wax motor/Bi-metal strip; also inspect the connections to these.

Hope this helps...

Daniel

Hello Andrew,

I'm more than happy to give step-by-step instructions for replacing the detergent dispenser, however it's not cheap (about £50) and it probably doesn't need to be replaced. Some of the smaller components for the dispenser are available separately, so it would be better to work out what's wrong with it, before replacing any parts - or the entire unit.

The dispenser may be receiving an erroneous signal from the controller to open when the dishwasher is in delay start mode. To check this, switch the power off, insert a tablet in the dispenser, and slide the door closed. Make sure it clicks shut fully (push on the arrow on the door)and then wait for a few minutes to see whether it opens.

If the tablet will stay in the dispenser with the power off, there is nothing wrong with the dispenser. If it opens with the power off, you may just need a new dispenser door or a spring. Please try this simple test, then get back to me for further assistance.

Regards,
BElectric

Hi, dishwasher detergent stays in the compartment because Bosch has designed a gap at the top of the compartment that feeds water onto the detergent before the cover opens. This has possibly been done to soften up deteregent tablets and help them dissolve.

The result is a solidified mass of wet detergent that doesn't come out of the compartment when it opens, and slowly dissolves onto the dishes leaving them coated with alkaline detergent at the end of the cycle. The residual lump of detergent is in the compartment or on the bottom of the dishwasher (refer photo).

The solution is to remove the compartment cover and look for the small gap at the top of the compartment as in the photos. Clean the surface and fill the gap with epoxy glue. This will keep the detergent dry until the cover opens, allowing the detergent to fall freely out of the compartment.

Put the cleaner tablet in with the forks and knifes.It will work perfectly.

Hi!

Please run the machine without detergent for 2-3 washes. Also try using a little hot water. Also, don't used cleaner and softener together but add softener on the last rinse.