90% of a dishwasher’s problems can be solved at home by yourself. Let us show you how to properly take this issue into your own hands.

Before we begin, if you live in Edmonton, the guys from Appliance Repair can help you out with anything related to your dishwasher repair or any other electrical outlet. Reach out to them on their Edmonton Appliance Repair website.

Unplug the Dishwasher

If you don’t want to get unpleasantly electrocuted, unplugging or shutting off the dishwasher’s electrical circuit is the first step to take.


This will also prevent you from accidentally having a washing cycle initiated while you’re inside the machine.

If the dishwasher has just gone through a washing cycle, the heating element might still be quite hot from the recent cycle, and direct touch might result in you getting burned. That’s why it is recommended to wait a couple of minutes before working inside the machine.

Turn Off the Water Supply Valve

The water supply is normally located under the sink. Turning the valve off might be at your best interest, especially if you want to avoid any water leaks occurring during the troubleshooting process.

Another reason for turning off the water supply valve is when you suspect the valve might be clogged. Which can cause water not to be available for the dishwasher to function normally.

Therefore, turning it off helps you check the dishwasher elements, to see if this isn’t a dishwasher issue instead.


Here are the 4 common malfunctions of a dishwasher:

  1. Nothing happens: If your dishwasher doesn’t turn on, make sure the power is on. Then check the electrical panel for a short circuit or blown fuses. Finally, check whether the machine switches and timers are not defective.

  2. Filling Issues: If the dishwasher won’t fill, turn the water valve back on to see if the valve isn’t clogged. If the dishwasher is cool as ice after a washing cycle, look for the cylinder or dome shaped float which is located at the tubes base near the front and see if it moves up/down freely.

If there’s nothing wrong with these elements, make sure the water inlet valve from the dishwasher isn’t clogged.

If the dishwasher overfills, it might be due to a damaged float switch. Therefore, you’ll need a cheap multimeter in order to test it.

Make sure that the float mechanism goes up and down with ease. Identify and label the wires attached to the float switch, set up the dial of the volt-ohm meter to RX 100 and attach the two probes to the terminals.

Finally, a good functioning float switch will return a 0 when you drop the float, if that doesn’t happen a switch replacement is required.

  1. Drain Issues: If a dishwasher is left with excessive water, it might be due to a defective working pump or clogged drain hose and house drain lines. Check and clean these elements properly and turn the dishwasher back on to see if the problem was solved.

  2. Minor Leaks: Check if the detergent isn’t way too sudsing to handle. Changing to a low sudsing detergent might solve the issue if that’s the case.

Also, make sure that the dishes are properly loaded, and the dishwasher is properly leveled, as this can cause minor leaks as well.


Published by Matthew Piggot