If your LG dishwasher won’t start, this guide will help you find the cause so you can fix it. Simply start with step one and work your way through the guide until you’ve successfully gotten your dishwasher working again.
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If your LG dishwasher isn’t starting, the best place to start is to check that it’s getting power. If your dishwasher is turning on but isn’t working, you can skip down to step 2.
Here’s how to test the power:
If your dishwasher turns on but doesn’t start, test the door latch. When the door is closed, the door latch makes sure the door cannot open when your dishwasher is running. If it becomes defective, the door won’t be able to close, and your dishwasher won’t be able to start.
Here’s how to check the door latch:
If the door latch is fine, you’ll need to check the door switch. The door switch is an electrical component that makes sure the door is closed while your dishwasher is running. If it becomes defective your dishwasher won’t start.
Here’s how to test the door switch:
The purpose of the thermal fuse in your LG dishwasher is to turn your dishwasher off if it starts to overheat. If the fuse blows or becomes defective, your dishwasher won’t be able to start.
Checking the thermal fuse requires doing a multi-meter test, which you can do by:
The next step is to test the touchpad and control panel to ensure they are working correctly. If not, they may need to be replaced before your dishwasher will start working again.
Here’s how to test the touchpad and control panel:
If you still haven’t found the cause of your LG dishwasher not starting, the sixth step in our guide is to test the timer. The timer is in your dishwasher to make sure voltage gets sent to the right components in your dishwasher at the right times during a wash cycle. If the timer becomes defective, your dishwasher won’t work properly or not at all.
Here’s how to test the timer:
Your final option if you still haven’t found the cause of your LG dishwasher not working is to replace the main control board. The main control board is difficult to test and repair, so the best option is to just replace it completely. However, given the cost of buying a new control board and the uncertainty that replacing it will make your dishwasher work again, you might decide the better option is to purchase a new dishwasher.
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