Overfill error wascomat exsm 230c. - Washing Machines

Washer fills with water and overflows:

The waterpressurelevel switch is a pressure activated switch that is used to determine the correct water level in the tub. This part is normally located behind the control panel and will have a hose or air dome tube that connects it to the tub. On washers that use an electronic control, this switch may be located at the sump area below the tub. As the water fills in the tub it will compress the air in the tube and push against a diaphragm inside the switch. The switch will control the water inlet valve and turn the valve off at the correct water level. If the tube has a leak, not enough pressure may be created to activate the switch and the washer may overfill. If the switch is defective it may also cause the machine to overfill. To determine if the switch is bad, you should first eliminate the air dome hose as a problem. Look for signs of cracks or worn areas on the hose. Remove the hose and submerge in water. Seal one end and blow air into the other end and look for bubbles. Check for an obstruction in the hose as well. If the air dome hose appears to be ok, then the water level switch may be defective.

You can test it with a meter and with a manual test? ( first locate it in the panel, it has a plastic clear tube hose going into it, remove that tube from its connection, now put another small tube or hose into the slot where it was and have the machine set to wash cycle with water in it. Blow into the other end of the tube.
If the machine starts to wash.the pressure switch is more than likely good
( No wash- then THE DIAPHRAGM IS BAD AND SWITCH HAS TO BE REPLACED).
Another test u can make with a multi meter is by testing the prongs individually.
# 15,16,17 (don't worry to much bout the numbers IF U GET THEM WRONG) placeurmeter prongs on both out side prongs or connectors of the switch.
(where the wire plugs into) take note ofwetherit shows OHMS or infinity ( open or close circuit) ? Now place the meter on the left outside and the middle prong, take noteaginwhat it shows. Now place meter prong on the right outside and the middle prong.Agintake note what reading u get. ( you should actually get a reading of infinity in 1 and a reading of continuity or ohms in the other 2? Now the tricky part.Aginplace a small tube or hose into the switch and blow into it, using the meter do the same testaginon all prongs. But now keep the pressure on the switch when u blow into it, in other words useurtongue on one end of tube to not allow air to escape. When u test itaginnow one of the prongs that once read infinity should now show continuity or ohms, and 1 of the other prongs that read ohms should now read infinity or open.


The other item to check would be your water inlet valve. Check it for continuity with a multi meter it should show Ohms or a closed circuit. Also check for hard water and debris build up in the screens located on the inlet valveTo test it when water is overflowing unplug the unit and see if it still overflows or continues to fill. If it stops when unplugged. Then it is not a water inlet problem but an electrical signal problem going tourwater inlet valve. Possibly from the panel or board.You can also do a live volt test to see if it is getting the full 120 current, but be sure to unplug unit before testing as this is a live test.
Also another trick to check thewater valve,is tofirst cut the water off and remove the hoses off the back of the washer. Then one at a time point the hoses inside the washer tub and turn the water back on. If you don't have good water pressure, turn the water back off and remove the strainer that should be in one end of the hose. Inspect the strainer to see if it is stopped up, clean it and reinstall it. Now repeat this test. If you have good water pressure now, reinstall hose and your problem is fixed

By the way my advice is freecuzGod is good!