Here is a link to your unit with a schematic Maytag MDB7130AWS
If I understand your post the dishwasher never fills with water. Even on rinse only cycle. Is this correct?
Do you have a volt/ohm meter.
If not go buy one, digital multimeters are inexpensive these days. You do not need a fancy one. It is a good idea to get one with leads that are a couple feet long.
Measure voltage at the start of a cycle when it should be filling with water.
Measure from L1 (power side of water valve) to far far side of float switch (looks like this goes to pin 5 on your control board). If you have 115 volts here then measure across the water inlet valve. If you have 115 volts here then either the valve is shot, the inlet screen is clogged or you have a problem with your water supply.
If you have 0 volts on all the above then use the resistance setting of the meter to be sure you do not have a broken wire going to these components from either line (L1) or the control board (looks like pin 5). Best to disconnect power to the unit when doing this. When measuring resistance always disconnect one side of what ever you are measuring. This ensures that you do not measure a parallel path. |