14 steps to fix your LG dishwasher that won't start

Written by David Lewis
5 Min read
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Troubleshooting your LG dishwasher that won't start

If you are having trouble starting your LG dishwasher, it can be a frustrating experience, especially if you rely on it to clean your dishes regularly. However, it can be challenging to determine the exact cause of the issue. To help you get your dishwasher back up and running, this guide will provide you with some steps to follow and explain how to fix the problem.

Firstly, it's essential to identify your LG dishwasher model, as different models may have varying causes and solutions. This guide will cover some of the most common LG dishwasher models, including the LDF6810BB, LDF6810ST/01, LDF7551ST, and LDF7774ST.

Next, you need to troubleshoot the issue. If your LG dishwasher is not starting, it could be due to a variety of factors, such as a power outage, a tripped circuit breaker, or a malfunctioning control panel. To determine the cause, you should perform some basic checks, such as ensuring the dishwasher is properly plugged in, and the circuit breaker has not tripped.

If these basic checks do not solve the issue, you may need to check for any error codes or warning lights displayed on the control panel. If there is a code or warning light displayed, consult your owner's manual to see what it means and how to fix it.

If you cannot find an error code or warning light, the next step is to inspect the dishwasher's components, such as the door latch and switches. Check to see if the door is properly closed and latched, and the switches are not damaged or malfunctioning.

If none of these steps solve the issue, it may be time to call in a professional repair service or LG customer service for further assistance.

In summary, if your LG dishwasher is not starting, it can be challenging to determine the cause. However, by following the steps outlined in this guide and troubleshooting the issue, you can identify the cause and find a solution to fix it. Remember to consult your owner's manual for specific instructions and seek professional help if necessary.

Dishwasher won't start

Step 1: Test the power

The first step in troubleshooting your LG dishwasher not starting is to make sure you have power. Check the circuit breaker that supplies power to the dishwasher, and make sure it is turned on. If the circuit breaker is on, try plugging the dishwasher into a different power outlet.

Step 2: Check the door latch

If you have power to the dishwasher, the next step is to make sure the door latch is functioning properly. Open the dishwasher door and check the latch for any debris or buildup of grime. If the latch is blocked it won’t be able to close correctly and the dishwasher won’t start.

Step 3: Test the door switch

If the door is closing correctly, the next step is to test the door switch. Unplug the dishwasher, locate the door switch which is usually on the right side. Use a multimeter to test for continuity. If there is no continuity, the door switch needs to be replaced.

Step 4: Replace the thermal fuse

The thermal fuse is located on the back of the dishwasher and helps prevent the dishwasher from overheating. If the thermal fuse is faulty, it won’t allow the dishwasher to start. Unplug the dishwasher, open the back panel, and check the thermal fuse with a multimeter. If there is no continuity, replace the thermal fuse.

Step 5: Test the touchpad/control panel

If the thermal fuse is working correctly, the next step is to check the touchpad/control panel. Unplug the dishwasher and test the touchpad/control panel with a multimeter. If there is no continuity, the touchpad/control panel needs to be replaced.

Step 6: Test the timer

The timer runs the entire cycle of your LG dishwasher, so if it is damaged or has failed, the dishwasher won't start. Unplug the dishwasher, remove the timer, then use a multimeter to test for continuity. If there is no continuity, the timer needs to be replaced.

Step 7: Replace the main control board

If the dishwasher still won’t start after testing all of the previous components, the last step is to replace the main control board. It can be an expensive component and uncertain in terms of fixing the problem, but can be preferable to buying a new dishwasher.

8: Check the water supply line

If all the components have been tested and appear to be working, the next step is to check the water supply line. Make sure the supply line is not kinked and that there is a steady supply of water coming into the dishwasher.

9: Check the drain hose

Another common cause of an LG dishwasher not starting is a clogged drain hose. Unplug the dishwasher, remove the drain hose from the back of the dishwasher, and check for any blockages or clogs in the hose. If you find any, clear them out and plug the drain hose back in.

10: Clean the spray arms

If the drain hose is clear, the next step is to clean the spray arms. Unplug the dishwasher, remove the lower and upper spray arms, and clean them with a mild detergent and a soft-bristled brush. Once they are clean, make sure they are securely reattached before running the dishwasher.

11: Clean the filter assembly

The filter assembly is another common cause of an LG dishwasher not starting. Unplug the dishwasher, remove the filter assembly, and clean it with mild detergent and a soft brush. Once the filter assembly is clean, make sure the dishwasher is plugged in and the filter assembly is securely reinstalled before running the dishwasher.

12: Clean the dishwasher tub

Food debris and buildup in the bottom of the dishwasher tub can prevent the dishwasher from starting. Unplug the dishwasher, use a damp cloth to wipe away any food debris and residue in the bottom of the dishwasher tub. Once the dishwasher tub is cleaned, make sure the dishwasher is plugged in and ready to run before starting it.

13: Reset the control Panel

If all the previous steps have been completed and the dishwasher still won't start, the final step is to reset the control panel. Unplug the dishwasher, locate the reset button on the control panel, and press and hold it for 10 seconds. Once the control panel has been reset, plug the dishwasher in and try starting it again.

14: Contact LG Customer Support

If all else fails, contact LG customer support for assistance. They can provide troubleshooting steps specific for your model and may even be able to provide repair advice or suggest a service technician to help fix the issue.

Expert tip:

Before attempting to troubleshoot and fix your LG dishwasher, make sure to take extra safety precautions. Be sure to unplug the dishwasher and disconnect the power before performing any maintenance.

Conclusion

Troubleshooting an LG dishwasher that won't start can be frustrating. By following the steps outlined above, you can identify the cause of the problem and fix it quickly. With the right knowledge and tools, you can repair your LG dishwasher and get it back up and running in no time.

Troubleshooting an LG dishwasher that won't start can be difficult, and involves checking the power, door latch, door switch, thermal fuse, touchpad/control panel, timer and main control board, as well as checking the water supply line, drain hose, spray arms, water inlet filter, filter assembly and dishwasher tub for any buildup or blockages. If all else fails, contact LG customer support for assistance. With the right knowledge and tools, you can repair your LG dishwasher and get it back up and running quickly.

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