There can be multiple reasons why a touchpad is no longer working. There might be too little power reaching the machine, a blown fuse or plug, or even a malfunctioning door latch. Before you start replacing the most likely parts, test your Maytag dishwasher to make sure you’ve identified the source of the problem.
How to Check the Power Supply
- Remove the bottom panel of the dishwasher underneath the door. This panel is usually secured by either Phillips screws or nut drivers. Unscrew the panels and pull them completely away.
- Check for power at the junction box with a voltmeter or multimeter tool. You can check for both overall power and the voltage to see if it’s at an appropriate level.
How to Check the Door Latch and Control Panel
- Unscrew the interior door panel. You will need to remove the screws from each edge of the panel to remove it. Once the panel is free, don’t split the two panels completely away: they will be connected by wiring you need to remove first.
- Disconnect the wiring to the dispenser and the wax motors.
- Test the door latch. Depress the tab with a screwdriver to see if the machine gets power. The tab should close the circuit so the dishwasher gets power.
- If you don’t get power to the machine, unscrew the door latch so you can check the microswitches and the connection to the control board. Once the door latch has been removed from the interior of the door, check the tabs and the box for moisture.
- Use a power wand to check for power at the control board. Test each switch for power; some control boards break in parts instead of as a whole.
- If every part individually has power, then the parts may have loose connections or a blown fuse. Check each plug for discoloration or signs of burning. If you find any electrical damage, the control panel’s control board (part #99003162) will need to be replaced.
The goal of troubleshooting is to find the source of the problem and replace and as few parts as possible. While some circumstances call for the door latch assembly to be replaced, or the control panel has a burned plug with discoloration, identifying which piece is broken is better than replacing both. Go to Fred’s Appliance Service for more troubleshooting and repair guides.