LG Water Heater: Smells Like Burning
A burning or gas smell needs immediate attention — shut it down and check the wiring or venting. Add a photo of your LG Water Heater in the box below: the Triage Profile says what it is, how urgent it is, and who to call.
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In the next five minutes
Safe first steps, before the call. Nothing here needs a tool.
If you smell gas, a carbon monoxide alarm sounds, or anyone feels dizzy or sick: don’t touch any switch or plug, leave and get everyone out, then call 911 or the gas company from outside.
Smoke or flames: get everyone out and call 911.
No gas smell, smoke or flames? Turn the water heater’s gas control knob to OFF if it’s gas, or switch off its breaker if it’s electric.
Everything else about this problem
Is it an emergency?
Is a burning smell from an LG water heater an emergency?
Treat it as urgent. Turn it off and switch off its breaker, and do not use it again until the cause is found. If you see smoke or flames, or smell gas, get everyone out and call 911.
Symptoms & causes
A burning smell emanating from your LG water heater often indicates an electrical issue, such as overheating wiring, a failing heating element, or a malfunctioning thermostat. This odor is typically caused by dust burning off hot components, or more seriously, by insulation melting due to excessive heat or a short circuit. Immediate investigation is crucial as this symptom can signify a fire hazard or impending component failure within the unit.
Tools & parts
You will need a reliable multimeter to test electrical components. A basic screwdriver set (Phillips and flathead) is essential for accessing panels, along with wire strippers/cutters for any necessary wiring repairs. Specific replacement parts like new LG heating elements and a new thermostat assembly may be needed.
Safety first
Immediately turn off the circuit breaker that supplies power to your LG water heater to eliminate any electrical shock or fire risk. Additionally, close the cold water inlet valve to the unit to prevent any water flow during inspection or repair. Always be aware of potential hazards including electrical shock from live wires, scalding water from the tank, and the risk of fire if the issue is not properly addressed.
When to call a pro
If the burning smell persists after basic troubleshooting, or if you observe visible scorch marks on wiring, insulation, or internal components, professional intervention is required. A tripped circuit breaker that immediately resets after being turned on, or a complete loss of hot water accompanied by the smell, indicates a more severe electrical fault that needs expert testing. A qualified technician can safely identify complex electrical shorts, replace high-voltage components like the main control board, and ensure the unit's electrical system is up to code and properly grounded.
Questions people ask
Is a burning smell from my LG water heater dangerous?
Yes, a burning smell is a serious warning sign and often indicates an electrical fault or overheating component. It poses a significant risk of fire or electrical shock and should be addressed immediately.
Can I fix a burning smell myself?
Minor issues like dust burning off elements might be resolvable with power off, but electrical component failures like thermostats or heating elements require careful testing. If you're not comfortable with electrical work, it's best to call a professional.
What if the smell is like rotten eggs instead of burning?
A rotten egg smell (sulfur) typically indicates a bacterial issue within the water tank, often due to an anode rod reacting with water chemistry. This is different from a burning smell and usually doesn't pose an immediate fire hazard, but still requires attention.
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What it is, how urgent, who to call
Add a photo of your LG Water Heater in the box at the top. The Triage Profile says what it is, how urgent it is, and who to call.