Is your Mr Buddy Heater’s pilot light glowing, but the burner just won’t ignite? You’re not alone, and it can be really frustrating when you’re counting on your heater to keep you warm.
Understanding why the pilot lights but the burner doesn’t fire up is key to fixing the problem quickly. You’ll discover simple steps to troubleshoot your heater and get it working again. Keep reading—your cozy space is just a few fixes away.
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Common Causes Of Pilot Light Issues
Pilot light issues in Mr Buddy Heaters often stop the burner from lighting. Understanding common causes helps fix the problem fast. Most pilot light troubles come from a few simple issues.
These problems can block gas flow or stop the heater from sensing the flame. Checking these areas saves time and keeps the heater working well. Below are the main causes of pilot light issues.
Dirty Or Clogged Pilot Orifice
Dirt and dust can block the pilot orifice. This tiny opening lets gas flow to the pilot light. When clogged, the flame may be weak or go out. Cleaning the orifice restores proper gas flow. Regular cleaning keeps the heater reliable.
Thermocouple Malfunction
The thermocouple senses the pilot flame. It tells the gas valve to stay open. If the thermocouple fails, the gas shuts off to stop leaks. A broken or dirty thermocouple causes the burner not to light. Testing and replacing it solves this problem.
Gas Supply Problems
Gas flow issues stop the pilot light from working right. Low pressure or blocked gas lines reduce fuel to the pilot. Check the gas tank and hose for leaks or damage. Fixing gas supply problems ensures a steady flame and burner operation.
Steps To Relight The Pilot
Relighting the pilot light on your Mr Buddy Heater is a simple task. It can solve many heating issues quickly. Follow these steps carefully to do it safely and correctly. This guide helps you get your heater running again in no time.
Safety Precautions
Always start by turning off the heater. Wait at least five minutes to clear any gas. Work in a well-ventilated area. Keep flammable items far from the heater. Use a long lighter or match to avoid burns. Never force any parts or ignore smells of gas.
Locating The Pilot Light
Find the pilot light assembly on your heater. It is usually near the bottom. Look for a small metal tube with a knob. This knob controls the gas flow to the pilot. The pilot light itself is a small blue flame.
Ignition Process
Turn the gas knob to the “off” position first. Wait a few seconds. Then turn the knob to “pilot.” Press and hold the knob down. Use a lighter or match to light the pilot. Keep holding the knob for 30 seconds. Release it slowly. The pilot should stay lit. If it goes out, repeat the steps carefully.
Inspecting The Thermocouple
Inspecting the thermocouple is a key step when your Mr Buddy Heater pilot lights but the burner does not. This small part controls the gas flow by sensing the pilot flame. A faulty thermocouple can stop the burner from heating up.
Understanding how the thermocouple works helps you diagnose the problem. Checking for signs of damage or wear can save you time and money. Testing it carefully guides you on whether to clean or replace the part.
Role Of The Thermocouple
The thermocouple acts like a safety switch. It senses heat from the pilot light. When hot, it sends a signal to keep gas flowing to the burner. If the pilot light goes out, the thermocouple stops the gas supply. This prevents gas leaks and dangerous situations.
Signs Of A Faulty Thermocouple
One common sign is the burner not lighting even when the pilot is on. The pilot may stay lit, but the burner stays cold. Another sign is the pilot light flickering or going out often. You might smell gas without the burner firing up. These signs point to a weak or broken thermocouple.
Testing And Replacement
Start by turning off the heater and letting it cool. Use a multimeter to test the thermocouple’s voltage output. A low or no reading means it needs replacement. Clean the thermocouple tip gently if dirty. Replace it if cleaning does not fix the issue. Installing a new thermocouple is simple and improves heater safety.
Cleaning The Pilot Assembly
Cleaning the pilot assembly is key to fixing a Mr Buddy Heater that lights the pilot but not the burner. Dirt and debris can block the pilot light, stopping the burner from igniting. Regular cleaning keeps the heater working safely and smoothly. It also helps prevent bigger problems down the line.
Tools Needed
Gather a small screwdriver, needle-nose pliers, and a soft brush. A can of compressed air helps clear dust from tight spots. Have a clean cloth ready to wipe parts after cleaning. Safety gloves protect your hands during the process.
Cleaning Techniques
Turn off the heater and let it cool completely. Remove the pilot assembly carefully using the screwdriver. Use the brush to remove dust and soot from the pilot tube and surrounding areas. Blow compressed air through the pilot orifice to clear blockages. Avoid using sharp objects that might damage the parts.
Reassembly Tips
Place the cleaned pilot assembly back in its position gently. Tighten screws firmly but do not over-tighten. Check the pilot light’s alignment with the burner. Test the heater after reassembly to ensure the burner lights correctly. Repeat cleaning if the problem persists.
Checking The Gas Flow
Checking the gas flow is a key step to fix Mr Buddy Heater pilot lights but not burner issues. The burner needs steady gas flow to ignite and stay lit. Without enough gas, the burner cannot light even if the pilot light is on. This section helps you check the gas flow carefully. Follow each step to find where the problem might be.
Inspecting Gas Lines
Start by looking at the gas lines. Check for cracks, holes, or leaks. Damaged lines stop gas from reaching the burner. Make sure all connections are tight and secure. Use a soap and water mix to spot leaks. Bubbles show gas escaping. Fix any leaks before using the heater.
Valve Operation
Next, test the gas valve. The valve controls gas flow to the burner. Turn the valve fully on and off a few times. It should move smoothly without sticking. A stuck valve can block gas. Replace or repair the valve if it does not work properly. Proper valve function is crucial for gas flow.
Pressure Assessment
Check the gas pressure if the lines and valve seem fine. Low pressure means not enough gas reaches the burner. Use a pressure gauge for this test. Compare the reading to the heater’s recommended pressure. If pressure is too low, contact your gas supplier or a technician. Correct pressure ensures the burner lights up.

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When To Call A Professional
Knowing when to call a professional for your Mr Buddy Heater is important. Some problems need expert help to avoid damage or danger. A pilot light that stays on but does not light the burner may seem simple. Yet, it can hide deeper issues. Understanding when to seek help saves time and keeps you safe.
Complex Repairs
Some repairs require special tools and skills. Issues like gas valve failure or clogged burner tubes need expert attention. Trying to fix these problems alone can make them worse. Professionals know how to diagnose and fix complex parts safely and correctly.
Safety Concerns
Gas heaters can be risky without proper handling. Gas leaks or faulty connections can cause fires or health hazards. A professional can check for leaks and ensure all parts work safely. Safety is the top priority when dealing with gas appliances.
Warranty Considerations
Many Mr Buddy Heaters come with a warranty. DIY repairs may void this warranty. Professionals follow manufacturer guidelines and keep your warranty valid. This protects your investment and ensures proper repairs with original parts.

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Frequently Asked Questions
Why Does Mr Buddy Heater Pilot Light Stay On But Burner Won’t Ignite?
A dirty or blocked burner can stop ignition even when the pilot light is lit.
How To Fix Mr Buddy Heater Burner Not Lighting Issue?
Clean the burner, check gas flow, and ensure the thermocouple works properly.
Can A Faulty Thermocouple Cause Pilot Light But No Burner Flame?
Yes, a bad thermocouple can fail to signal the gas valve to open fully.
Is Low Gas Pressure A Reason For Burner Not Lighting?
Low gas pressure can prevent the burner from lighting despite the pilot staying on.
How Often Should I Clean My Mr Buddy Heater Burner?
Clean the burner at least once a season to avoid blockages and ignition problems.
Conclusion
Troubles with your Mr Buddy heater can feel frustrating. The pilot light working but the burner not igniting shows a common issue. Checking the thermocouple, gas supply, and cleanliness helps fix it. Small steps can save time and money. Always follow safety tips when working with heaters.
If problems persist, seek professional help. Staying safe keeps your heater running well all winter. Simple care makes a big difference.