Encountering an error code on your kitchen appliances can be a stressful experience, especially when it involves a device as essential as your dishwasher.
If you own an LG dishwasher and suddenly see the letters "AE" flashing on the display, you are not alone.
The AE error code in an LG dishwasher is a specific indicator that the unit’s internal leak detection system has been triggered.
Essentially, the appliance has detected water in the bottom drip pan, which causes the machine to shut down its operations as a safety precaution to prevent potential flooding or water damage to your kitchen floor.
What Does the AE Error Code Mean?
In the sophisticated design of modern LG dishwashers, safety sensors are integrated to protect your home.
The "AE" code stands for "Aqua Error" or, more specifically, a detection of moisture in the base of the machine.
At the bottom of the dishwasher, there is a drain pan equipped with a float switch.
When water leaks from a hose, a faulty pump, or an overflowing tub, it collects in this pan.
As the water level rises, it lifts a float or triggers a sensor, which sends a signal to the main control board to stop all cycles and display the AE code.
It is a protective mechanism, not necessarily a sign of a total machine failure.
Common Causes of the AE Error Code
Understanding why the AE code appears is the first step toward resolving the issue.
While it is often caused by a simple accumulation of water, the root causes can vary.
One common culprit is a loose or damaged connection on the drain hose or water supply line.
Over time, vibrations during the wash cycle can cause clamps to loosen.
Another possibility is a failing drain pump seal, which allows water to seep out from the pump housing.
Additionally, if you have recently cleaned the filters and didn't seat them correctly, or if there is excessive sudsing from using the wrong type or too much detergent, water can overflow and trickle down into the base pan.
Step-by-Step Troubleshooting for the AE Error
Before calling a technician, you can perform a few diagnostic steps to determine if you can fix the issue yourself.
First and foremost, safety is paramount.
Always disconnect the dishwasher from the power source by unplugging it or turning off the circuit breaker.
Once the power is off, you need to access the base of the unit.
This often requires removing the bottom kick plate or toe kick panel.
Use a flashlight to inspect the bottom tray.
If there is standing water, use a towel or a wet-dry vacuum to remove it entirely.
Once the area is dry, try to identify the source of the leak by visually inspecting hoses and connections.
If you cannot find an obvious leak, the issue might be a "false positive" caused by a stuck float switch.
Sometimes, debris can get trapped under the float, causing it to stay in the triggered position even when the pan is dry.
Gently check if the float mechanism moves freely.
If the pan is dry, the float is clean, and you have tightened any suspicious hose connections, reconnect the power and run a test cycle.
If the code persists, it is possible that the water sensor itself has malfunctioned or that there is an internal leak that is not immediately visible.
When to Call a Professional
While DIY troubleshooting can resolve minor leaks and sensor glitches, some scenarios require a professional appliance repair technician.
If you have thoroughly dried the base pan and the AE error returns immediately upon starting a new cycle, it suggests an active, ongoing leak inside the machine’s chassis.
Repairing internal components, such as a faulty pump, a cracked tub seal, or a damaged wire harness, requires specialized tools and technical expertise.
Attempting to disassemble complex internal parts can void your warranty or lead to further damage.
If your dishwasher is still under the manufacturer's warranty, contacting LG support is always the recommended first step.
Preventive Maintenance Tips
Prevention is the best strategy for keeping your dishwasher running smoothly.
Regularly inspect your dishwasher for signs of slow leaks or moisture under the unit.
Use only the recommended detergent specifically designed for automatic dishwashers to avoid excessive suds, which can cause overflow issues.
Periodically check the drain hose for any signs of cracking or hardening, and ensure that the hose is properly secured.
Keeping the interior filters clean not only improves wash performance but also helps ensure proper water flow, reducing the risk of overflows that could trigger the dreaded AE error code.
By maintaining your appliance with care, you can avoid unexpected breakdowns and extend the lifespan of your machine.
Frequently Asked Questions (FAQ)
What does the AE code mean on my LG dishwasher?
The AE error code indicates that the dishwasher's internal leak detection system has sensed water in the bottom drip pan, causing the machine to shut down for safety.
Can I fix an LG dishwasher AE error myself?
Yes, for minor issues like a loose hose or a wet base pan, you can often fix it by drying the pan and tightening connections.
However, if the leak is internal, a professional may be required.
What should I do first when I see the AE error?
First, turn off the power to the dishwasher (unplug it or flip the breaker).
Then, remove the bottom kick plate to check for standing water in the drip pan.
Does using the wrong detergent cause the AE error?
Yes.
Using regular dish soap or too much detergent can cause excessive suds, leading to an overflow that trickles into the base pan and triggers the AE sensor.
Written by: David Thomas
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