Is your LG dishwasher smelling like burning plastic? That unpleasant odor can be worrying and frustrating.
You might wonder if it’s safe to keep using your dishwasher or if something is seriously wrong. The good news is, you’re not alone—and this burning smell often points to specific, fixable issues. Whether it’s a piece of plastic stuck on the heating element, a faulty control board, or wiring problems, understanding the cause can help you act quickly and avoid bigger damage.
You’ll learn the common reasons behind that burning plastic smell and what steps you can take to fix it safely. Keep reading to protect your appliance and your home.
Common Causes
LG dishwashers may emit a burning plastic smell for several reasons. Identifying the cause helps fix the problem quickly. Some issues are simple to solve, while others need professional help. This section explains the common causes clearly and simply.
Trapped Plastic On Heating Element
Plastic utensils or containers can fall to the dishwasher bottom. They may touch the heating element and melt. This melting plastic causes the burning plastic odor. Unplug the dishwasher and check the bottom carefully. Remove any melted plastic pieces to stop the smell.
Shorted Control Board
The control board manages dishwasher functions electronically. A power surge or damage can cause it to short circuit. This damage may create a burning electrical smell. Unplug the dishwasher and inspect the control board for burn marks. Replace the board if it looks damaged.
Faulty Heating Element
The heating element heats water and dries dishes. If it is damaged or shorted, it can emit a burning smell. Check for blisters, cracks, or breaks on the element. Testing with a multimeter confirms if it works properly. Replace a faulty heating element to stop the odor.
Motor And Wiring Issues
Dishwasher motors and wiring carry power to parts. Damaged wires or motor problems can cause burning smells. Inspect wiring for melted insulation or exposed wires. Listen for unusual motor sounds that hint at problems. Repair or replace damaged parts to fix the smell.
Drain Solenoid Problems
The drain solenoid controls water drainage inside the dishwasher. If it sticks or malfunctions, it can overheat. Overheating parts may release a burning odor. Check the solenoid for proper movement and electrical function. Replace it if overheating or damage occurs.
Normal Odor In New Dishwashers
New LG dishwashers often have a burning plastic or rubber smell. This happens as factory residues burn off the heating element. The odor usually disappears after a few uses. Running the dishwasher empty once or twice can speed up this process. No need to worry if the smell fades soon.
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Identifying The Source
Detecting the source of a burning plastic smell in your LG dishwasher is crucial. This helps prevent further damage and ensures safe use. Several components may cause the odor. Careful inspection of each part can pinpoint the exact problem.
Inspecting For Melted Plastic
Plastic items can fall inside the dishwasher during cycles. These objects often land on the heating element. When heated, plastic melts and creates a burning smell. Unplug the dishwasher first. Then, check the bottom for any melted plastic pieces. Remove all foreign objects carefully to avoid damage.
Checking The Control Board
The control board manages the dishwasher’s functions. Electrical faults here can cause burning odors. Look for burn marks or discoloration on the board. A short circuit may be the culprit. Disconnect power before opening the control panel. Replace the board if damage is visible or suspected.
Examining The Heating Element
The heating element dries dishes by producing heat. If it is damaged, it may emit a burning smell. Inspect it for cracks, blisters, or breaks. Use a multimeter to test for electrical continuity. A faulty element must be replaced to stop the smell and restore function.
Assessing Wiring And Connections
Loose or damaged wires can overheat and smell like burning plastic. Check all wiring inside the dishwasher. Look for melted insulation or exposed wires. Tighten any loose connections. Replace damaged wires to avoid electrical hazards and eliminate odors.
Testing The Drain Solenoid
The drain solenoid controls water flow during draining. A malfunctioning solenoid may overheat and cause burning smells. Test it by running the dishwasher and listening for unusual noises. Check for signs of heat damage or melting. Replace the solenoid if it shows signs of failure.
Quick Fixes
The burning plastic smell in your LG dishwasher can be alarming. Quick fixes often solve the issue without calling a technician. These simple steps target common causes and help you restore safe operation fast. Always unplug the dishwasher before starting any checks or repairs. Follow these tips to stop the burning odor and protect your appliance.
Removing Foreign Objects
Check the dishwasher bottom for plastic pieces or utensils. Sometimes small items fall and melt on the heating element. Remove any foreign objects carefully to avoid damage. Let the dishwasher cool completely before touching any parts. Clearing melted plastic often stops the burning smell immediately.
Resetting Or Replacing Control Board
A shorted control board can cause burning odors. Unplug the dishwasher and open the control panel. Look for burn marks or damaged components on the board. Resetting may help, but severe damage means replacement is needed. Replacing the control board restores normal function and stops smells.
Repairing Or Replacing Heating Element
The heating element heats water and dries dishes. Damage or shorts can produce a burning plastic smell. Inspect the element for cracks or blistered spots. Use a multimeter to test continuity if possible. Repair minor damage or replace the element to fix the smell.
Securing Loose Wires
Loose or damaged wires can overheat and smell like burning plastic. Check wiring connections inside the dishwasher carefully. Tighten any loose wires and replace frayed or burnt cables. Securing wiring reduces electrical hazards and eliminates burning odors.
Addressing Drain Solenoid Issues
The drain solenoid controls water flow during cycles. A faulty solenoid may overheat and cause smells. Listen for unusual noises or delayed draining. Test the solenoid with a multimeter and replace if defective. Fixing solenoid problems stops overheating and burning smells.
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Safety Precautions
Safety is the top priority when dealing with a burning plastic smell from your LG dishwasher. The source of the smell might be electrical or mechanical, both of which can cause hazards. Taking the right precautions reduces risks of shocks, burns, or further damage. Follow these steps carefully before inspecting or fixing your dishwasher.
Unplugging Before Inspection
Always unplug the dishwasher from the power outlet before inspecting it. This step stops electricity from flowing and lowers the risk of electric shock. Never open the dishwasher or touch internal parts while it is connected to power. Wait until the appliance cools down to avoid burns.
Recognizing Electrical Hazards
Look for signs of electrical problems such as burnt wires, scorch marks, or melted plastic inside the dishwasher. These indicate dangerous faults like short circuits or overheating. Avoid touching damaged wires or components directly. Use insulated tools and wear rubber gloves if you need to handle electrical parts.
When To Stop And Call A Professional
Stop any inspection or repair if you feel unsure about handling electrical components. Complex issues like control board damage or wiring faults require expert attention. Calling a licensed technician ensures safe and proper repair. Do not attempt repairs beyond basic checks to prevent injury or voiding warranties.
When To Get Professional Help
Knowing when to seek professional help for your LG dishwasher is crucial. A burning plastic smell signals potential issues that require expert attention. Acting early can prevent costly repairs and ensure safety. Understanding the warning signs helps you decide when to call a technician.
Signs Of Serious Damage
Look for visible burn marks or melted plastic inside the dishwasher. Sparks or smoke during operation are clear danger signals. Unusual noises combined with the burning smell also indicate serious problems. These signs show internal damage needing immediate professional repair.
Persistent Burning Smell
If the burning plastic smell stays after multiple uses, it is not normal. Continuous odor may mean a failing heating element or damaged wiring. Do not ignore a persistent smell, as it can lead to fire hazards. A professional can diagnose and fix the cause safely.
Certified Lg Repair Services
Choose certified LG repair services for trustworthy fixes. Certified technicians have training specific to LG dishwashers. They use genuine parts to maintain your appliance’s warranty. Professional repair ensures your dishwasher works correctly and safely again.
Preventive Tips
Preventing a burning plastic smell from your LG dishwasher saves time and worry. Simple daily habits protect your appliance and keep it running smoothly. Focus on careful use and regular upkeep to avoid issues. Here are key tips to prevent burning smells and extend your dishwasher’s life.
Avoiding Plastic Near Heating Element
Keep plastic items away from the heating element. Small utensils or containers can slip and melt on the hot part. Always check the dishwasher bottom before running a cycle. Use dishwasher-safe items only. This prevents plastic from burning and causing bad odors.
Regular Maintenance Checks
Inspect your dishwasher often for signs of wear or damage. Unplug the unit and look for melted plastic or burnt wires. Clean filters and spray arms regularly to avoid clogs. Check the heating element for cracks or blisters. Early detection stops problems before they grow.
Proper Dishwasher Loading
Load dishes carefully to keep items stable during washing. Avoid overcrowding, which can cause plastic to fall onto the heating element. Place plastic items on upper racks only. Keep heavy pots and pans away from delicate parts. Proper loading helps prevent melting and burning smells.
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Frequently Asked Questions
Why Does My Lg Dishwasher Smell Like Its Burning?
A burning smell in your LG dishwasher may come from melted plastic on the heating element, a faulty heating element, shorted control board, or wiring issues. New units might emit odor as factory residues burn off. Unplug and inspect or contact a professional if the smell persists or you see damage.
Why Does My Dishwasher Smell Of Burnt Plastic?
A burnt plastic smell in your dishwasher often comes from melted plastic on the heating element. It may also indicate a faulty heating element, wiring issues, or a shorted control board. New dishwashers can emit this odor during initial use as residues burn off.
Unplug and inspect carefully.
What Is The Class Action Lawsuit Against Lg Dishwashers?
The class action lawsuit against LG dishwashers alleges defects causing burning smells, electrical issues, and potential fire hazards. Plaintiffs claim LG ignored these problems, risking consumer safety. The lawsuit seeks compensation and repairs for affected owners.
What Is The Most Common Problem With Lg Dishwashers?
The most common problem with LG dishwashers is a burning smell caused by melted plastic on the heating element or faulty wiring.
Why Does My Lg Dishwasher Smell Like Burning Plastic?
A burning plastic smell usually means melted plastic on the heating element or wiring issues inside.
Conclusion
A burning plastic smell from your LG dishwasher signals a problem. Check for melted plastic on the heating element first. Unplug the dishwasher before inspecting any parts. Look closely at the control board, wiring, and heating element for damage. New dishwashers may have a slight burning smell that fades after a few uses.
Do not ignore persistent odors; they can indicate electrical issues. Always prioritize safety by disconnecting power before any check. If unsure, contact a professional technician for help. Keeping your dishwasher clean and maintained prevents burning smells.