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Commercial Oven Pilot Light Won't Stay Lit?
Why won't my commercial oven's pilot light stay lit? Common causes, what you can check, and when to call our licensed and insured technicians.
Licensed & Insured
2024
Serving Since
90-Day Warranty
Mon–Fri 8am–6pm · Sat, Sun Closed (EDT)
Equipment We Service
Ovens & Cooking
Refrigerators & Freezers
Ice Makers
Dishwashers
Washers & Dryers
2024
Serving Since
Service-call pricing
FREE with repair — every tier goes toward your repair, $0 extra.
Standard Most appliances + brands | $87 |
Commercial Walk-in coolers, commercial laundry, restaurant equipment | $187 |
Warranty: 90-day parts and labor. Technician quotes the repair on-site before any work.
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Is your commercial oven's pilot light refusing to stay lit here in Alpharetta, or perhaps in nearby Johns Creek? That can certainly disrupt your kitchen operations, whether you're running a busy restaurant or just a dedicated home chef. Understanding why a pilot light might be behaving erratically is the first step toward getting it resolved. On this page, we'll walk through the most common reasons this issue occurs, highlight a few simple things you might be able to safely check yourself, and explain when it's best to bring in the expertise of a qualified technician like those at A.M.S. Appliance Repair to get your oven back to full working order.
Common causes of commercial oven pilot light won't stay lit
Dirty or Clogged Burner Assembly
importantCan DIY checkFood debris, grease, or carbon buildup can obstruct the pilot orifice or the main burner ports, preventing a stable flame or causing it to extinguish.
Faulty Thermocouple or Thermopile
importantPro recommendedThe thermocouple is a safety device that senses the pilot flame and signals the gas valve to stay open. If it's dirty, bent, or failing, it may not detect the flame, causing the pilot to go out. A thermopile is similar but generates more voltage.
Improper Airflow or Draft Issues
minorCan DIY checkA draft from an open door, a malfunctioning exhaust fan, or blockages in the oven's ventilation can disrupt the pilot flame, causing it to flicker or go out. This can also be related to the building's overall ventilation.
Gas Supply Pressure Problem
criticalPro recommendedLow or fluctuating gas pressure from the supply line can prevent the pilot light from igniting properly or staying lit. This is often an issue with the building's gas system, not the oven itself.
Defective Gas Valve
criticalPro recommendedThe gas valve controls the flow of gas to the pilot and main burners. If the valve is malfunctioning, it may not maintain consistent gas flow to the pilot light, causing it to extinguish.
Quick checks you can run safely
- 1
Check for Air Drafts
Ensure no strong drafts are blowing directly onto the pilot light. Close nearby doors or windows and turn off any powerful exhaust fans temporarily to see if the pilot stays lit.
Safety: Be cautious around the open oven cavity. - 2
Inspect the Pilot Area for Debris
Visually inspect the pilot light assembly and the main burner ports for any obvious signs of food debris, grease, or carbon buildup. Do not attempt to clean if you are uncomfortable.
Safety: Ensure the oven is completely cool before inspecting. - 3
Listen to the Gas Flow
When attempting to light the pilot, listen for a steady hiss of gas. A weak or sputtering sound might indicate a pressure issue.
Safety: If you smell gas, immediately turn off the gas supply and evacuate the area. Do not operate any electrical switches or create sparks. - 4
Check Thermocouple Position
Ensure the tip of the thermocouple is positioned directly within the pilot flame. Sometimes, vibrations can cause it to shift slightly out of the flame.
Safety: Allow the oven to cool completely before touching any components.
When to call a pro right away
You smell gas.
Natural gas is highly flammable and explosive. A gas leak requires immediate professional attention to prevent fire or explosion.
The pilot light repeatedly goes out after a few minutes, or you cannot get it to light at all.
This often indicates a problem with the gas valve, thermocouple, or gas supply, which requires specialized tools and knowledge to diagnose and repair safely.
You suspect a problem with the main gas supply or pressure to the oven.
Issues with the building's gas lines or regulators are beyond the scope of oven repair and can be dangerous if tampered with.
Cleaning the burner assembly or thermocouple doesn't resolve the issue.
Further diagnosis of internal components like the gas valve or safety sensors is needed, which requires professional expertise.
Saw a red flag above? Don't wait.
Same-day service. transparent service-call pricing (applied to repair) — applied to your repair.
Typical repair time once diagnosed: 90 minutes
This page provides general diagnostic guidance for commercial oven pilot light won't stay lit. Specific causes and repairs vary by appliance brand, model, and condition. For accurate diagnosis, contact a licensed appliance repair technician. Repairs involving refrigerant systems, gas lines, or high-voltage circuits require certified professionals — DIY attempts on these systems may be illegal and dangerous.
How our repair process works
Five steps from your first call to the warranty receipt. No surprises.
- 1
Inspection
Your technician examines the appliance, listens to your description, and notes the model + serial for parts lookup. Visual + audio-based diagnostics first — non-invasive.
- 2
Diagnostics
Targeted tests on the failing subsystem (compressor, control board, heating element, motor, etc.) to identify the exact root cause. You get a clear explanation, not jargon.
- 3
Fix decision
Up-front estimate before any work begins: cost, parts, and the realistic likelihood of success vs. recommending replacement on an old or uneconomical unit. You decide.
- 4
Operational test
After the repair we run the appliance through its normal cycle on-site — never "it should work now, call us if it doesn't." You sign off when it's actually working.
- 5
Warranty + consultation
Receipt with warranty terms in writing. Plus a quick walkthrough of how to extend the appliance's life (filter cleaning, drain maintenance, etc.) — included free.
What our customers say
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GoogleAlex came the same afternoon and had my oven repaired in short order. I highly recommend his services.
GoogleI needed my disposal repaired. Ivan came out the same day and fixed without having to replace. It was quick and easy and saved me $300. Thank you! Great service.
GoogleGreat service! Professional, friendly, and efficient. Fair prices and excellent communication. Highly recommend!
GoogleExcellent service! Very professional, friendly, and reliable. The technician arrived on time, quickly identified the problem, and fixed everything efficiently. Fair pricing and great communication throughout the process. I’m very happy with the service and wou…
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Thu8am–6pm EDT
Fri8am–6pm EDT
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