How do you adjust the height on a bosch dishwasher?

Dishwashers come in standard sizes. Your old one is 60 CM wide and made for built in.

https://www.bosch-home.ca/en/supportdetail/product/SGU4025AU/31

DISHWASHER 60 CM BUILT-IN/BUILT-UNDERSGU4025AU/31
As long as the new one is also for built in, the dishwasher will fit. Measure the height of the space you have. There may be a little height adjustment on the feet.

..

https://www.manualslib.com/manual/324394/Bosch-B30bb830ss.html?page=18


If this is the same model, page 18:


The height-adjustable feet at the front and rear can all be
adjusted from the front.

Rear:
with
5/16" (8 mm) hex nut driver via flexible
shaft

there are usually 4 feet at the bottom that are adjustable by a couple of centimeters to bring it to right height & level it.

How to Adjust Rack Height in Your Dishwasher

The 'rack adjuster' part numbers for my Samsung dishwasher were:
"SamsungDishwasher Rack Adjuster": DD97-00120A ($11.11)
"ASSY-BASKET ADJUSTER (R);DM1477,R-PJT": DD97-00119A ($11.11)
I ordered these from Partstore.com on 1/1/13 and they were identical to the original adjusters. I hope this helps.

I MIGHT BE GIVING THE OBVIOS ANSWER BUT ALL PIPES MUST BE FREE FROM KINKS,AND THE OUTLET PIPE SHOULD ALSO BE AT A CERTAIN HEIGHT FOR WATER TO DRAIN.
[I PRESUME WATER TAPS ON CONNECTION PIPES ARE SWITCHED TO ON POSITION.

Remove any plinth in front of the base of the machine. In the middle of the base you should see a black screw head with arrows either side. This screw adjusts the height of the machine at the back - clockwise = up and visa versa. The two feet at the front screw in or out of the base moulding to raise or lower the machine. Check that these have not been secured by screws through the front moulding. If so, slacken or remove. NOTE: make sure if the machine is already installed that you have loosened the screws which secure the machine at the top to the underside of your worktop.

May be open circuit water valve. Appliance will go to error mode if water level has not reached a certain height after a preset time. Check coil continuity with a multi meter. Should be looking for about 200 ohms.

adjustment fot foot is at front middle

check if the top rack is adjustable in height - usually there is a choice of positions