Usually, a problem with the thermocouple causes the pilot light to go out. The thermocouple is the small copper rod that the pilot light hits. The thermocouple’s job is to shut a gas safety valve if the pilot light goes out. That’s important because gas is always being supplied to the pilot to keep the flame lit.
Why would a pilot light just 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.
Why won't my boiler pilot light come on?
Newer boilers will have an ignitor, whereas an older boiler pilot light may require you to light a match for ignition. If you still can’t light your boiler, there could be debris blocking the jet. Boiler pilot light jets are relatively cheap to replace but can also be removed, cleaned and re-installed.
How do you fix a pilot light on a gas boiler?
- Find your gas valve. …
- You need to turn the valve to the off position for at least three minutes.
- Once you have had the valve at off for a few minutes, switch it over to pilot setting.
- You will need a match that is lit. …
- Set the pilot valve to the on position.
How do you fix a pilot light that keeps going out?
If you have a faulty thermocouple is the most common reason that your pilot light is malfunctioning. Over time your water heater will collect dirt, dust and other kinds of debris. Build up on your thermocouple can cause a malfunction. This is and easy fix, simply let it cool down and brush off the dirt or debris.
Does gas turn off when pilot goes out?
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. … If the pilot light goes out for any reason, the current stops, the valve closes, thus preventing any gas from leaking.
How do I stop my pilot light from blowing out?
You should hold down on the pilot light for at least five seconds once it is lit before letting go. This will ensure your pilot light won’t blow out right after you light it.
Should a pilot light always be on?
Generally speaking, it is safe to leave your continuous pilot light on at all times, assuming it stays lit (more on this in a moment). While it does cost more to keep your pilot light on in between uses, it can actually have some benefits to your system.Why does my boiler wont stay lit?
If it’s not staying lit though, then you’re probably dealing with a thermocouple issue. The thermocouple of a boiler system is a long metal wire that acts as a heat sensor for the pilot light. … If the pilot light goes out, then the electrical current stops, and the gas valve closes.
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.
Article first time published onHow 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.
Should the pilot light always be on in a gas boiler?
The pilot light is the blue flame that always stays lit under your boiler. … When heat is required, the pilot light will inflame that gas and send it to the burners. The pilot light must always stay on or gas will easily escape. If the pilot light keeps turning off, then your boiler is not working.
How do I get my pilot light back on?
- Find the pilot light assembly and its reset switch. The furnace’s pilot light is usually positioned at the bottom of the unit by a knob. …
- Set the reset switch to off. Turn the knob to the “Off” setting. …
- Wait a moment. …
- Relight the pilot light. …
- Observe the furnace.
Why is my gas boiler not firing up?
A boiler might not ignite due to various possible reasons – insufficient pressure, blockage in the burner, faulty valves, frozen pipes etc. Sometimes, you can fix the problem on your own. In other cases, you don’t have any choice but to call an engineer.
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.
Can you clean a thermocouple?
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.
How do you fix a bad thermocouple?
- Choose the new thermocouple based on the size and mounting style of the old one. …
- Detach the old thermocouple as described above.
- Remove the new thermocouple from the packaging and uncoil it to the appropriate shape.
- Attach the new thermocouple to the pilot assembly and the gas valve.
When should pilot light be turned off?
A little heat is produced when your pilot light is on so turning it off in summer can help reduce the heat inside your home. The less heat there is, the less you have to use your air conditioner needs to cool down the house. You can get savings and conserve energy if you turn off your pilot light.
Can a pilot light start a fire?
When the appliance is turned on, a valve releases more gas, which is ignited by the pilot light. … If this leak continues, its concentration may reach a point where a spark – such as that from a cigarette lighter, static electricity, or even the pilot light itself as it is re-lit – will cause a fire or even an explosion.
How much heat does a pilot light give off?
Just how much gas does a pilot light consume? Most pilot lights will consume about 600 BTU’s of gas/hour. With 24 hours in a day, that’s roughly 14,400/BTU’s each day.
Is it safe to turn off pilot light?
We recommend that you turn off your gas fireplace pilot light seasonally. Turning off your gas fireplace’s pilot light can save a substantial amount of energy and money. It is important to remember that not all gas fireplaces have “standing” pilot light, or, a pilot light that is “always on”.
How much does a standing pilot cost?
Usually it is $1 and change. So you pilot can be costing you $7 to $10 per month. Propane is a little bit different. Since propane is done by the gallon, the numbers are different.
Who should I call to light a pilot light?
Instead, leave the house and call your local gas company or 911.
How much natural gas does a pilot light use in a year?
A pilot light is a small flame that is kept lit to provide a catalyst for the main burner to be turned on when needed. The average fuel consumption of your standing Pilot light is: Natural gas is $0.60 a day = $219 a year. Liquid Propane is $1.80 a day = $657 a year.
Can I replace a thermocouple myself?
The No. 1 cause of pilot lights that won’t stay lit is a worn-out thermocouple. It’s easy to replace and a new one costs $5 to $10. Rather than trying to unfasten the thermocouple inside the water heater’s burning chamber, it’s easier to remove the whole burner and thermocouple assembly.
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.
What color should the pilot light flame be?
The color of the pilot light should be blue because that means that only natural gas—without any other condensates—is reaching the pilot light through the gas main. The principal chemical compound found in natural gas is methane, and methane burns blue.
