Matt said:
Thanks for that. I will look tomorrow. So there isn't anything in the
control panel that monitors the water level?
Matt,
As Ken said there is a water inlet on the back of the dishwasher that lets
the water in. What can happen is that the solenoid gets a small leak in the
membrane that is connected to a small magnetic shaft. When the solenoid
operates it lets water into the dishwasher, but can sometimes not release
fully when the current is switched off. The dishwasher continues to fill
and of course eventually overflows.
To correct this problem, disconnect the power and water from the machine.
Locate the water inlet valve, disconnect it (note where the wires came from
so you put them back correctly) and remove from the machine.
Using suitable tools, carefully disassemble the valve / solenoid (usually
involves removing 4 screws).
Remove the actuator / membrane assembly (be careful not to tear it or lose
the spring or any of the seals).
Clear out any rust or deposits inside the hole where the spring and magnet
assembly sits in. This will often be full of stuff which tends to prevent
the membrane from returning to the closed position and shutting off the
water flow.
Reassemble the valve, install in machine and test.
Ultimately you will probably need to replace the valve assembly.
If the machine has both hot and cold water inlets and you only use one of
them, consider swapping over the unused one for the used one.
The other fault maybe the water level sensor.
Check to ensure the tube to the sensor is not obstructed (by kinking or
blockage).
Replace sensor if defective.
Cheers,
Alan