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Troubleshooting guide

Gas fireplace pilot won't light

Most "won't light" calls come down to gas supply, power, or a dirty pilot assembly. Here's what to check, in order, without taking anything apart.

Start with the easy, safe checks

  1. Is gas getting to the fireplace? Find the manual shut-off valve near the fireplace (often behind the lower grille). The handle should line up with the pipe. If other gas appliances in the home work, the main supply is on.
  2. Propane? Check the tank level. Manufacturers list an empty tank as a cause of "pilot sparks but will not light."
  3. Fresh batteries. Replace the remote batteries and any batteries in the receiver or backup battery pack. Weak batteries cause a lot of no-spark and half-start problems.
  4. Switch positions. Many electronic-ignition fireplaces have a selector switch on the control module (OFF / ON / REMOTE). If it's OFF, nothing will happen. Wall switches and the breaker count too.
  5. Follow the lighting instructions for your exact model. They're on a label near the controls (often behind the lower grille) and in the owner's manual. Older standing-pilot units have a knob you press and hold while you push the igniter.

First fire of the season? Air in the line is normal

After a fireplace sits all summer, the small pilot line can hold air. Napoleon's manual lists "pilot supply line may contain air" as a cause and says to repeat the ignition process several times. On electronic-ignition models that may mean a few start attempts in a row.

Don't overdo it. If the control locks out, follow the reset steps in your manual. Napoleon warns not to reset the module more than once in five minutes, because gas can build up in the firebox. If it still won't light, stop and get help.

Clicking, but no flame

If you hear sparking but the pilot never catches, the manufacturer troubleshooting tables point to gas supply first (valve open, propane in the tank, correct inlet pressure), then air in the pilot line, then wiring or grounding, then a dirty or damaged pilot assembly or flame sensor. Inlet pressure and wiring checks are jobs for a tech with the right tools.

No click, no spark, nothing

No sound at all usually means no power or no signal: dead batteries, a switch in the OFF position, a tripped breaker, or a remote that has lost its pairing. See remote not working for re-pairing steps.

What a tech checks next

On a video call, a tech will usually have you show the pilot assembly, the control module lights and the rating plate (for the model number). From there they can tell if it's a gas supply issue, a dirty flame sensor, a failed thermocouple or thermopile, or a control that needs replacing. Then you know which part to order, or whether you need someone on site.

Common questions

Why does my gas fireplace click but not light?

Clicking means the igniter is sparking but the pilot isn't catching. Common causes are the gas valve being off, an empty propane tank, air in the pilot line after the off-season, or a dirty or damaged pilot assembly. Check the gas valve and fuel first, then follow your model's lighting instructions.

How many times should I try to light the pilot?

Follow your owner's manual. If the control locks out, use the manual's reset steps and wait between attempts. Napoleon, for example, warns not to reset its module more than once in five minutes. If it still won't light, stop and get help.

Can I fix a pilot that won't light myself?

Batteries, switches, the gas shut-off and the lighting steps are safe for a homeowner to check. Anything involving gas pressure, gas connections or replacing gas valve parts should be done by a qualified technician.

Related guides

Sources

Brand names belong to their owners. Fireplace Helpline isn't affiliated with or endorsed by any manufacturer. Steps and codes vary by model and year, so always check your own owner's manual.

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