Let the knob up slowly after the pilot lights. This will ignite the burners and keep the flow of gas.
7 Most Common Furnace & heating Problems Heating furnace
The thermocouple is a metal case that contains metal wires welded together.

How to light a pilot light on a gas furnace. Keep a close eye on your pilot light once you have restored the flame. Place the lit match or ignited lighter tip at the pilot while depressing and holding the reset button or depressing the knob, as appropriate. You need to locate and access the pilot light, turn the gas valve to the pilot light position, and use a long lighter to relight the pilot light.
Find the pilot light assembly. If you have an older furnace or a gas heating system, it probably has a pilot light. Finding the pilot light on a furnace is the first step toward relighting it.
Unlike older pilot lights, which have to be lighted by hand, automatic pilot lights, now commonly found in most home furnaces, are regulated by a thermostat and only ignite when needed. While older pilots burned constantly, wasting gas, automatic pilot lights come on long enough to ignite the gas supply and then shut off. If instructions are not present this is the general procedure that you can follow:
It is highly recommended to turn to your furnace’s owner’s manual and follow the manufacturer’s instructions. Turn the gas supply knob to pilot. press and hold the knob down while you place a long, lighted match inside the furnace and near the pilot. The most common reason for this problem is because the pilot light is not on.
Wait five minutes for any gas remaining in the furnace to vent. Once the gas has had time to dissipate, turn the knob to pilot. then, hold down the reset button and bring the flame of a long lighter close to the pilot light opening. Whether it’s your furnace, water heater, oven, or stove, relighting your pilot light is actually really easy.
Older gas furnaces often have a standing pilot light that remains on all of the time. Keep the knob in for 20 seconds and then release it and turn it to the on position. When your furnace fails to ignite, the first place to look is the pilot light.
The gas valve on an older furnace will have three or four settings, they are on, off, pilot and sometimes set. Once you have given any excess gas a chance to dissipate, follow the instructions in your system’s manual to relight the pilot. This maintains gas flow to the pilot until the thermocouple gets hot enough to open the main gas valve.
Strike up your match or lighter. This should light the furnace pilot light. Hold the flame of a fireplace lighter or match at the tip of the pilot light tube to ignite the flame, continuing to hold down the control dial for 90 seconds.
Turn the gas valve counterclockwise until it reads 'pilot.' push the red 'reset' button and hold it down while you light the pilot burner with a match. This should light the furnace pilot light. This lets the gas dissipate from the chamber so you don’t ignite excess gas when relighting the pilot light.
Depress the button or knob for about 30 seconds. If you think that seems like a colossal waste of gas, you're right to a degree, but it's also a surefire way to ignite the burner when the gas valve switches on. A pilot light is a small gas burner that is continuously burning to light a larger burner.
The thermocouple assists with furnace operation by monitoring the presence of the flame, and turning off the gas supply to the pilot light if it should become extinguished or becomes weak. When the pilot is burning brightly, release the rest button. A minute to two minutes is sufficient.
Locate the pilot light by finding the gas line that enters the furnace. Lighting the pilot light on a gas heater is simple to do. Most models hide the pilot behind a sheet metal access panel located on the front of the furnace.
Light a match and hold it near the pilot opening while you press the reset button on the pilot control panel. Use a cloth or paper towel to wipe away any grease or grunge on the pilot light valve and the gas pipes. Its main function is to ignite the burners when the furnace is called upon for heat.
Once the gas has had time to dissipate, turn the knob to pilot. then, hold down the reset button and bring the flame of a long lighter close to the pilot light opening. Where is the pilot light on a furnace? Depress the reset button, and while it is depressed, hold the match flame near the pilot opening.
This maintains gas flow to the pilot until the thermocouple gets hot enough to open the main gas valve. Hold your flame to the pilot light’s opening. Step 7 release the gas control dial and turn it to the on position, with the pilot light remaining lit.
Place the lit match or ignited lighter tip at the pilot, while depressing and holding the button or depressing the knob as appropriate. If your old gas furnace has a standing pilot, you can follow a standard procedure to relight the pilot light. A gas furnace pilot light is a continuously burning flame.
A standing pilot light is a small flame positioned next to the main burner that is constantly burning. When your furnace is in full operation the gas valve will be in the set position, when you are relighting your pilot light the gas valve needs to be in the pilot position. Set the valve to the on position.
How do you light a pilot light on a carrier furnace? Continue to keep the button pressed down until you see the pilot flame ignite. Once the pilot stays lit, slowly release the button or knob, and turn the gas cock or knob from the “pilot” position to the “on” position.
Most furnaces have instructions attached to them. Relighting your pilot light at a glance. How to light a pilot light on gas heater (furnace) here is how to light the pilot light on a gas heater.
Turn the thermostat to its lowest setting. Light a lighter or match, then push in the reset button. Depress the button or knob for about 30 seconds.
Often, this will involve manually depressing the pilot valve and using an electric ignitor or match to light the pilot. It’s usually near the bottom of the furnace and has a gas valve with on, off, and pilot settings. The furnace pilot light is a small burner that’s used to keep the larger furnace burners going.
Turn the knob to “pilot,” and let gas to flow to the pilot. Turn the gas knob to the off setting and wait 5 minutes to clear out any gas. Turn the gas control to pilot and hold it in while you light the flame with a match or a lighter.
How to light the pilot light on a honeywell vr8200 set your thermostat to the lowest setting and unplug your furnace. This pipe is about the size of a garden hose and may be made of brass, copper or black steel. It’s dependent on the thermocouple, which opens the gas valve.
Once you are sure the pilot light is on, release your pressure on the reset button.
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