Hi My ASKO F12 error code , dishwasher model D5434 is starting cycle by pumping out leftover water then water inlet opens fills machine to correct level then stops giving a F12 error code and beeping

SOURCE: Our asko dishwasher won't stop

you have a leak. only way forward is to take of the panels and look for it

SOURCE: Dishwasher LD-14AW2, stopped working mid cycle

Since water doesn't drain out ,it could be a clogged in the drain line. Often the problem is at the point where the drain line attaches to the garbage disposer or household drain line. You should remove this line and clear it form any debris in the hose or the hose connection. Be sure to reattach the hose before starting the dishwasher again. Good luck!

SOURCE: siemens hydrosensor dishwasher SE25A091GB/22

Paul

If you are still trying to sort out this issue try the following.

From what you say then it is most likely the aqua sensor on the side of the dishwasher. The gurgling sounds that you hear are likely the drain pump running and the un-drainable water sloshing in the sump.

Verify that there is actually water going to the dishwasher( Basic step but often overlooked)

Next the inlet valve will have to be checked. This is the part where the water line from the house connects to the dishwasher, under the toe/kick panel. Remove power from the dishwasher. Disconnect the dishwasher electrical connections (2 wires) to the inlet valve and connect it (carefully to 110 V power) using a jumper wire. With 110V power the valve should open and water will flow into the dishwasher, if not then the fault is in the inlet valve.

If this checks fine then the fault is likely in the aqua sensor...

On the outer left side (viewed from front) there is a panel, Behind this panel there is a small clear(of light blue) plastic mechanism with hoses and wires attached( There is usually a yellow disk at the top about 6cm in diameter) this is a float and sensor assembly there is tells the control the water level and works as an emergency drain if there is an issue. There will be a red stick protruding downward to the base and a Styrofoam float on which the stick rests. This is a pan overflow sensor if the stick is too high the unit will go into drain and cut off the fill valve power. The yellow disk is a diaphragm which senses water height. This unit can become stuck with wear and hard water.

SOURCE: Asko w640 has a water inlet fault

Check the drain line to make sure the water does not siphon out as it enters the machine.

SOURCE: Item: Whirlpool Ultra Dishwasher Age: 3 yrs

Larry,
The float is generally for overflow conditions and will interrupt power to the fill valve solenoid.
If you are not filling completely in the time allowed by the timer, it is most likely a flow restriction in the water supply. Barring other obvious restrictions, the fill valve has filter screens on the inlet side of the fill valve, which is generally the cause of your symptoms. Be careful if you attempt to clean the screens, as the fill valves are very sensitive to debris, and can become stuck open if sediment gets past the screen. I usually replace the fill valve to avoid future problems.
Hope this helps.