If gas is coming out of the pilot, but it still won’t light, the spark igniter could be the problem. Alleyne says to look for and clear out any debris between the igniter and thermocouple. … The pilot lighting, but not staying lit, indicates that the thermocouple is worn out, Worthen says.
What do you do when your pilot light won't light?
If your pilot light won’t stay alight, it might be the thermocouple. Sometimes dust buildup collects on the thermocouple and blocks the sensor. Try cleaning the thermocouple and then relighting the pilot light. If it continues to go out, the thermocouple might need to be replaced.
How do you know if you have a bad thermocouple?
If you can’t get the flame to light at all, and you’re sure the gas is on, there’s probably an obstruction in the pilot tube. If the flame lights and goes out when you release the gas control knob after holding it in for the recommended 20 to 30 seconds, that’s the sign of a thermocouple malfunction.
How do you clean a thermocouple on a gas fireplace?
- Turn off the fireplace gas valve and remove the front panel from the fireplace. …
- Find the thermocouple, which is located next to the pilot light and looks like a small straight pipe.
- Use a can of compressed air to gently blow away any dust and dirt from the thermocouple.
Can I manually light my gas fireplace?
Turn the knob from the “Off” to the “Pilot” position. Push in the pilot knob, which manually sends gas into the system. Push the igniter button once every second until it lights. Depending on how long it’s been since the gas fireplace was last used, ignition may take multiple attempts.
Does a gas fireplace have a fuse?
Ensure that your gas supply is okay before you go on to check out the pilot light. For fireplaces that are switch operated, or ones that have an electronic ignition, check your fuse breaker. In modern homes, the fireplace has its own fuse.
Will gas leak if pilot light is off?
If the pilot light goes out on a storage or instantaneous hot water heater, space heater or a ducted heater, you will not have a gas leak. This is because all modern gas appliances with pilot lights have a fail-safe device that closes off the gas to the appliance in the case when the pilot may go out.
How do I know if my thermocouple is bad on my gas fireplace?
The Fix: Pilot Light to Gas Fireplace Won’t Stay Lit So you’ve checked your pilot light and even reset it, but still, it wont stay lit. This can be an indication that your fireplace thermocouple is either bad or worn out.
Why would a gas fireplace suddenly go out?
If you get dust in the pilot assembly and the pilot needs to be cleaned out, it produces a “lazy” flame, which will be disturbed by the draught of the main burners. The flame lifts away from the thermocouple and causes the temperature on the tip of the thermocouple to drop. This, in turn, makes the gas valve shut off.
How do you clean a clogged pilot light?
Use your pliers or wrench to remove the pilot light and thermocouple from the bracket. Using the wire brush, brush away the carbon buildup and soot from both components. For hard to reach areas and stubborn buildup, use the metal file. Wipe away dust with a soft cloth or burst of compressed air.
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Does cleaning a thermocouple help?
Yes, you can clean a thermocouple, but the task must be done with a light touch. Remove the thermocouple from the process assembly, using a steel wool or emery cloth, lightly clean the tip removing any build up. Cleaning a thermocouple is not a fix for an issue, such as inaccurate readings.
How much does it cost to replace a thermocouple?
It costs $150 to $250 to replace a thermocouple. It checks to make sure the pilot light is on. It will shut the gas off if it’s not.
How do you bypass a thermocouple?
- Move the tilts switch wire aside.
- Remove your thermocouple from the heater using an 8mm wrench.
- Pull the valve housing aside using your 13mm socket wrench. …
- Remove the valve using your pliers. …
- Put your thermocouple back into position.
Do all gas fireplaces have pilot lights?
As colder weather approaches, you’ll want to make sure your fireplace is in working order. Most gas fireplaces have a standing pilot light, which is a small flame that burns even when you aren’t using your fireplace. … If you don’t see the valve, it may be behind the fireplace, so look for it there and turn it on.
How much does it cost to relight a pilot light?
Most service providers will charge a standard fee per visit that typically covers the cost to relight a gas water heater. This service call price can range from $80 to $100.
What happens if a thermocouple fails?
Normally when the thermocouple malfunctions or isn’t working, it simply shuts off the gas to your heater. This is important, particularly if the pilot light is out, because it prevents harmful gas from leaking into your home.
How do I know if my pilot light is out?
- Locate the front cover panel on your furnace. It should be a little door that’s easily visible. …
- If your pilot light is on, it should be easy to see – your eyes will be drawn to the little flame.
- If you don’t see a flame, your pilot light is out.
- If there is a flame, check the color.
What can cause a pilot light to go out?
Some of the possible serious reasons for pilot lights to go out include loose or broken gas valves, thermocouples or heat exchangers, faulty venting, low gas pressure, or high winds. If you believe there is a serious problem, don’t hesitate to contact a professional.
What's a thermocouple look like?
The thermocouple looks like a piece of metal tubing smaller than a soda straw. To find it, first locate the gas control box. This is the box that the main gas line enters, where you turn the gas on in the furnace. (On most furnaces, it also houses the button that you hold open or push to relight the pilot.)
Is there a breaker for gas fireplace?
The fireplace should have its own circuit. If it’s on a circuit with other appliances, an overload can blow the fuse or circuit breaker. Replace a fuse if it’s blown or reset the circuit breaker if it is tripped. … The switch for the gas fireplace may look exactly like a light switch with 110 volts!
Why does it take so long for my gas fireplace to turn on?
Usually the problem is solved by having the fireplace cleaned and serviced, which takes about an hour of time. Look for a competent fireplace repairman to do this job for you. Most gas fireplaces do not have a thermocouple, they have a pilot generator which developed the voltage to turn the main burner on.
How long do gas fireplaces last?
Gas Fireplace: When to Replace A typical fireplace latest 10-15 years, depending on the maintenance and quality. Homeowners may also want a fireplace makeover with modern features and better aesthetics.
Do gas fireplaces have an automatic shut off?
Nearly every new gas fireplace comes equipped with safety features such as a 100% fail-safe shut-off valve. If the pilot flame goes out, the gas flow will automatically turn off. … This device automatically shuts the gas off if the temperature in the fireplace gets too cold or if too much carbon monoxide builds up.
How long should a thermocouple last?
Thermocouples can last up to 10 years if properly installed and maintained, while furnaces can last 15-20 years, although either may wear out sooner in multifamily units.
What causes a thermocouple to go bad?
Changes in temperature can cause regular expansion and contraction in metal, which will cause thermocouples to weaken over time. After enough time, metal fatigue can cause a thermocouple to break. … If thermocouples start to give out unusual readings, it may be suffering from metal fatigue.
Can a pilot light get clogged?
The pilot light may be going out if the pilot tube (burner) is blocked, dirty, or clogged. A dirty pilot tube will not be as reliable than if it is clean. … Any blockage in the pilot tube will cause the furnace to not stay lit. So cleaning it is an easy solution without having to replace any parts.
What do thermocouples do?
A thermocouple is a sensor that measures temperature. It consists of two different types of metals, joined together at one end. When the junction of the two metals is heated or cooled, a voltage is created that can be correlated back to the temperature.
