Key Takeaways -

• Regular maintenance prevents the most common outdoor heater issues.
• Clean and inspect components like burners, gas lines, and thermocouples regularly.
• Address safety concerns like gas leaks or faulty wiring immediately with professional help.
• Proper troubleshooting ensures efficient performance and extends the heater's lifespan.

Outdoor heaters are a great way to enjoy your outdoor spaces even in cooler weather, but they can sometimes stop working as expected. Knowing how to fix common problems can save you time and hassle.

This article will cover the seven most common outdoor heater issues and simple ways to fix them. From heaters that won’t light to those that don’t produce enough heat, you’ll find easy tips to get your heater working again.

Keep reading to learn how to keep your outdoor heater running smoothly. With the right solutions and a little maintenance, you can stay warm and enjoy your outdoor spaces all year long.

#1 Patio Heater Won’t Light

What Causes It

A patio heater that won’t light can be due to several reasons:

• Debris buildup on the pilot can block the flame from igniting.
• Low gas pressure or an empty propane tank can prevent proper fuel flow.
• A faulty spark igniter may fail to start the flame.
• Gas leaks or blocked orifices can disrupt the ignition process.
• For electric heaters, a faulty power connection, tripped circuit breaker, or blown fuse may be the issue.

How To Fix It

Start by cleaning debris from the pilot to ensure proper ignition. Refill or replace the propane tank if it’s empty. Test the spark igniter and replace it if it’s not working. Inspect and unclog gas lines or orifices using a needle or compressed air to restore fuel flow.

For electric heaters, check the power outlets, reset circuit breakers, and consult an electrician if necessary. These simple steps should resolve most ignition problems.

#2 Heater Won’t Stay Lit

What Causes It

A heater that won’t stay lit can result from:

• A misaligned or dirty thermocouple, which prevents it from detecting the pilot flame.
• Low gas pressure interrupts the fuel supply.
• Wind or drafts extinguishing the pilot light.
• Blocked or corroded burner components that hinder proper combustion.
• Drafts or blockages in the gas flow that disrupt the pilot light.

How To Fix It

Realign or clean the thermocouple to ensure it functions correctly. Check the propane tank or gas supply to maintain proper pressure. Shield the heater from the wind by moving it to a more sheltered spot. Clean or replace burner components to improve performance.

Clear any obstructions in the gas lines and ensure adequate ventilation to maintain steady fuel flow and flame stability.

#3 Weak Flame or Low Heat Output

What Causes It

A weak flame or low heat output can be caused by:

• Low gas pressure, especially in colder temperatures when propane contracts.
• A blocked burner assembly that disrupts fuel flow.
• Kinked or damaged gas hoses restrict gas supply.
• Insufficient fuel supply in the propane tank.
• Incorrect thermostat settings or worn heating elements in electric heaters.

How To Fix It

Use a full propane tank during colder weather to maintain proper pressure. Clean the burner assembly and emitter screen to remove any blockages. Replace kinked or damaged gas hoses for unrestricted flow. Check propane levels and refill the tank if necessary.

For electric heaters, adjust the thermostat settings or replace worn heating elements to restore heat output.

#4 Flame Issues (Yellow or High Flames)

What Causes It

Patio heater flame issues, such as yellow or excessively high flames, can occur due to:

• A clogged air intake, which disrupts the oxygen and fuel balance.
• Incomplete combustion caused by improper gas flow or burner blockages.
• A damaged thermocouple or safety switch that fails to regulate the flame properly.

How To Fix It

Clear any obstructions from the air intake to ensure proper airflow and oxygen supply. Adjust the gas flow to maintain the right balance for complete combustion. Replace a damaged thermocouple or safety switch to restore proper flame control and heater safety.

#5 Strange Noises

What Causes It

Strange noises coming from your patio heater can be caused by:

• Debris inside the heater, such as dirt, dust, or small objects disrupting its operation.
• Mechanical issues or loose components that vibrate or rattle during use.

How To Fix It

Listen carefully to identify the noise type—humming, clicking, or rattling—to pinpoint the source of the issue. Inspect the heater for any foreign objects or debris and clean it thoroughly. Tighten any loose components to reduce vibrations.

If the problem persists, consult a professional for further inspection and repairs of mechanical parts.

#6 Soot Accumulation on Furniture

What Causes It

Soot buildup on nearby furniture can result from:

• Improper burner function, causing incomplete combustion and producing soot.
• The heater is placed too close to furniture, allowing soot to settle directly on surfaces.

How To Fix It

Regularly clean the burner to ensure it functions properly and prevents soot formation. Adjust the height or placement of the heater to maintain sufficient distance from furniture, minimising the risk of soot accumulation.

#7 Gas Smell When Heater is On

What Causes It

A noticeable gas smell when the gas patio heater is on is often a sign of a gas leak, typically caused by faulty connections or damaged components, which can present a significant safety hazard that should not be ignored.

How To Fix It

Turn off the heater immediately and avoid using it. Contact a professional to inspect the unit for leaks or damage. Do not attempt to fix gas leaks yourself, as they require specialised tools and expertise to resolve them safely.

Preventative Maintenance Tips

Regular maintenance can keep your patio heater working efficiently and prevent common problems. Clean the burner and pilot regularly to remove dirt and debris that can block ignition. Inspect gas hoses and connections for any damage or leaks, replacing them as needed.

Periodically test the igniter and thermocouple to ensure they function properly. Protect the heater from harsh weather conditions by using a cover or storing it indoors during extreme weather.

For electric heaters, regularly clean and check heating elements and reflectors to maintain optimal performance and prevent overheating.

When to Call a Professional

Certain issues require professional attention to ensure safety and effective repairs. Contact a professional if you detect gas leaks or notice significant damage to critical components, as these can pose safety risks.

For electric heaters, seek professional help for complex electrical repairs or wiring issues. If troubleshooting steps fail to resolve persistent problems, a qualified technician can provide thorough diagnostics and repairs to restore your heater’s functionality (1).

Frequently Asked Questions

What Should I Do If the Gas Valve on My Patio Heater Is Stuck?

If the gas valve is stuck, first ensure the heater is turned off, and the propane tank is disconnected for safety. Gently clean around the valve with a dry cloth to remove debris or buildup. Apply a small amount of lubricant designed for gas fittings to loosen the valve.

If it remains stuck, avoid forcing it and contact a professional to prevent damage or leaks.

I Have Some Damaged Gas Lines in My Patio Heater. How Do I Fix Them?

Inspect the gas lines to identify cracks, kinks, or leaks, and turn off the gas supply immediately if damage is found. Replace damaged lines with new ones that match your heater’s specifications. Use a wrench to securely connect the new lines, ensuring all fittings are tight.

Perform a soap-and-water test to check for leaks before using the heater again.

How Do I Fix an Improperly Adjusted Gas Regulator?

Turn off the gas supply and disconnect the regulator for inspection. Clean any debris from the regulator and check for visible blockages. Reconnect the regulator securely and adjust the settings according to the heater’s manual to ensure proper gas flow.

If the issue persists, consider replacing the regulator or consulting a professional.

Conclusion

In conclusion, understanding and addressing common outdoor heater issues can save you time, money, and frustration. With proper maintenance and quick troubleshooting, most problems can be resolved easily, ensuring your heater operates efficiently and safely.

For complex issues or safety concerns like gas leaks, always consult a professional. By taking care of your outdoor heater, you can enjoy cosy and comfortable outdoor spaces year-round.

Sources -

1. https://www.kennerelectrics.com.au/blog/troubleshoot-outdoor-heater-problems