Why Your Fire Pit Table Will Not Stay Lit (and How to Fix It)
If your fire pit table will not stay lit, the most common cause is a faulty or dirty thermocouple that senses no flame and shuts the gas off within seconds of you releasing the ignition knob. Wind, a nearly empty propane tank, air trapped in the gas line, and clogged burner ports are the other usual suspects. Below we work through each symptom, the likely cause, and the exact fix, plus a clear line for when to stop and call a professional.
Part of our Ultimate Fire Pit Table Buyer’s Guide.
Why does my fire pit table shut off a few seconds after I light it?
This is the classic thermocouple problem. The thermocouple is a small metal probe that sits in the flame. When it heats up it tells the gas valve the burner is lit and keeps the gas flowing. If it is dirty, bent out of the flame, or worn out, it reads no heat and the safety valve closes, so the fire goes out the moment you let go of the knob.
The fix: hold the ignition knob down for a full 30 to 60 seconds after the flame catches so the thermocouple can heat fully before you release it. If it still dies, let the unit cool, then gently clean the tip of the thermocouple with fine steel wool or a soft cloth to remove soot and oxidation. Check that the probe sits directly in the flame path, about a quarter inch into the flame. If cleaning and repositioning do not work, the thermocouple is inexpensive to replace and is the single most common repair on a gas fire pit table that will not stay lit.
Why won’t my fire pit table stay lit in the wind?
A breezy patio can blow the flame away from the thermocouple or snuff a low flame entirely. If your fire only goes out on windy evenings, wind is almost certainly the cause rather than a broken part.
The fix: turn the flame up higher so it is more stable, add a wind guard or glass flame surround sized for your table, and position the table so a wall, fence, or planter blocks the prevailing wind. Fire glass and lava rock also help hold heat and shelter the flame at the burner. If you are choosing media, our guide to fire glass vs lava rock explains which performs better in exposed spots.
Can low propane or low gas pressure make a fire pit keep going out?
Yes. A nearly empty propane tank, a tank that has just been filled and is venting, or a regulator stuck in bypass mode can all starve the burner so it cannot sustain a flame. On natural gas, an undersized line or a partially closed supply valve does the same thing.
The fix: check the tank level first. If it is low, swap or refill it. If the tank is full but the flame is still weak, you may have tripped the excess flow safety in the regulator, which is common right after connecting a tank. To reset it, turn off the control knob, disconnect the regulator from the tank, wait about 30 seconds, reconnect it slowly, then open the tank valve slowly before turning the burner on. Opening the tank valve too fast is the number one reason a regulator goes into bypass and the flame stays stubbornly low. If you are weighing fuel types, our comparison of propane vs natural gas fire pit tables covers pressure and supply in more detail.
Is there air trapped in my gas line?
If your table is new, has just had a tank change, or has sat unused for months, air in the line can make the burner sputter, pop, and die before it settles. This is normal and usually clears on its own.
The fix: with the burner set to a medium flame, let it run for a minute or two so the air purges and steady gas reaches the ports. You may need to relight it once or twice. If the flame will not hold long enough to purge, go back and confirm the tank is open and the thermocouple is doing its job first.
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Why is my flame weak, uneven, or sputtering across the burner?
Clogged burner ports are the culprit when the flame is patchy, low in spots, or lifts and drops. Spiders, dust, rust, cooking grease, and dropped debris block the small holes the gas flows through, and blocked ports can also keep the flame off the thermocouple.
The fix: shut off the gas and let the table cool completely. Remove the fire glass or lava rock, then clear each burner port with a soft brush or a thin pin, working gently so you do not enlarge the holes. Vacuum out debris, wipe the burner pan, and make sure the drain or weep hole is clear so moisture does not sit and rust the burner. Reassemble, keep the media a consistent depth, and never bury the burner or the igniter. For a broader tune up, our gas fire pit tables guide walks through burner and igniter basics.
Quick fire pit troubleshooting table
| Symptom | Likely cause | First fix |
|---|---|---|
| Dies within seconds of releasing the knob | Thermocouple not heated or dirty | Hold knob 30 to 60 seconds, clean the probe |
| Only goes out when windy | Flame blown off the thermocouple | Raise flame, add a wind guard, shelter the table |
| Weak flame with a full tank | Regulator stuck in bypass | Reset the regulator, open the tank valve slowly |
| Sputters then dies on a new setup | Air trapped in the line | Run at medium flame to purge the air |
| Patchy or uneven flame | Clogged burner ports | Cool the table, clear the ports, remove debris |
| No spark at all | Dead igniter battery | Replace the AA or AAA igniter battery |
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When should you call a professional?
Gas is not something to guess with. Stop and call a qualified technician if you smell gas when the valve is off, see soot building fast, hear a persistent hissing, or find damaged hoses, fittings, or a cracked regulator. Never test for leaks with a flame. Instead, brush soapy water on the connections and watch for bubbles with the gas on and the burner off. If bubbles appear, shut the gas off and do not use the table until the leak is repaired. When in doubt, a service call is far cheaper than a fire.
Frequently asked questions
Why does my fire pit table only stay lit while I hold the knob?
The thermocouple is not getting hot enough to keep the safety valve open. Hold the knob down for 30 to 60 seconds after the flame catches, and if it still dies, clean or replace the thermocouple.
How do I reset the regulator on a propane fire pit table?
Turn off the burner and the tank, disconnect the regulator, wait about 30 seconds, reconnect it, then open the tank valve slowly before lighting. Slow is the key word, since opening fast trips the safety.
Can rain or moisture stop a fire pit from staying lit?
Yes. Water pooling in the burner pan can rust the ports and wet the igniter. Keep the weep hole clear, dry the pan, and use a cover between uses to keep the burner working.
Why does my fire pit keep going out in the wind but not on calm nights?
Wind is pushing the flame off the sensor or blowing it out. Raise the flame, fit a wind guard or glass surround, and place the table where a wall or fence blocks the breeze.
Is it safe to keep relighting a fire pit that will not stay lit?
A few relights during purging are fine, but if it keeps dying, stop and troubleshoot. Repeated relighting lets unburned gas build up, so check the tank, regulator, and ports before trying again.
Related: How to Light a Fire Pit Table and Ignition Systems and Fuel Types.
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