Siemens 1433 Washer - Aquastop

think I would start where the water starts from and work thru the problem maybe someone turned the water off

Typically all dishwashers have a maximum full switch that is located on the bottom of the inside of the washer, on some it looks like a round plastic cap about two to three inches round, if you grab it it will move up and down as much as a half inch, this is a float that when the water level is at the maximum will turn off the water inlet solenoid, I have had something small (in my case a small lid) get under this float holding it in the up position so it would not allow the washer to fill with water, after removing the lid the float went back to the correct position and everything worked fine. I would say this is happening to you by what you say has happened.

check your pump is not blocked take bottom front panel off and unscrew it

Your aquastop system is activated :deactivate by turning off the water supply, running the dishwasher so that it is expecting to fill (if you hold the grey square box at this point, you should feel it slightly vibrating, which is a good sign that it is working ok). Clear the filter in the aquastop. Turn off dishwasher via the reset as per model. Refit valve, turn on supply and check for water tightness. Finally, restart the the d/w and if there was a fauklt with the aquastop ( and not a different fill problem) this process should have reset it. Hope this helps.

It's possible that the Aqua-Stop flood protection system has been activated. I can probably help you, but I really need more information.

1. When you start a wash program, can you hear the pump running? - This will be a low pitch humming sound.
2. There is a dome/mushroom shaped plastic protrusion in the bottom of the washing compartment, located behind and between the salt compartment cap and the drain. Can you lift this up (be gentle) or is it already up and can only be pushed down?

Please post this information and I will try to assist you further.

Sprayers require water to pass through the jets to provide motion to the arms.

Suggestion;

Remove the sprayer from the machine and look for blockages. (Removal should be easy, at it is expected that the user will need to clean the jets occasionally; If you have any problems removing it, consult your manual).

WHEN I PRESS START - HAS ALARM ON DISPLAY F AND H FLASHING AND TAP OPEN POSTER HAS THE FLASHING LED TOO. HO TO REPAIR IT.

MY NAME XUAN

Try removing the inlet pipe, and refitting, might fix it, else likely that the
Inlet water soleniod failing/failed or tiny mesh filter (it does come out for cleaning) behind the inlet hose clogged. Temporaily bypass the aquastop water stop unit; it might be the culprit!

A replacement solenoid is usually only about £10 from www.espares.co.uk, or ebay sellers (no connection with these but they are very good), fits in minutes (2 or 3 electrical spades ,and a posidrive or two) and usually fixes all water related problems. the noise you can hear is probably the solenoid trying to actuate, will be droning/buzzing sound.
could simply be stuck with some foreign matter in there that's got through the mesh filter but unlikely. they normally fail and sound terrible.

Don't throw your dishwasher away for the sake of a £10 part.
Good luck

Service manual say FA is "aquastop failure- check aquastop switch", (aquastop switch is flood switch located in base of machine), however looking at the parts view of this machine, it doesn't seem to have a flood switch-odd.
F9 is an overflow problem- manual says to check pressure switch.
Both faults seem to indicate either a leak or overflow problem- remove rear panel and check base for any water, which would indicate a leak.
If OK, next step would be to remove front panel (remove wire and spring from around door seal, remove 2 screws holding door lock, remove 3 screws along base- front panel comes off by pulling down and out towards you-can be a bit tight)
Pressure switch is located just above door lock-it has the black tube going to it- remove tube and blow into switch-you should hear it click.
Also check the chamber that the other end of the tube connects to on the bottom front of tub- this chamber can get blocked up and cause overfill problems.
Please note- always disconnect from power supply before attempting any repairs. If in any doubt, best to leave for an expert.
Good luck!!

The same thing happened to mine in March 2010