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Re: pilot ligting instructions
Many of the newer furnaces don't have a standing pilot. look to see if you have a gas valve with a knob on top that says off pilot and on. look to see if a tube the size of a pencil comes out of the valve and goes down by one of the burners, look to see if there is a little gold piece of metal tubing protruding down to the opening of the larger tube . that is where you place the match. i prefer to use a grill lighter. safer and positive flame. turn knob to off wait 5 minutes for any gas to disipate. be sure your incoming gas valves are all open . usually at the meter and one at the furnace. usually the handle is in line with the pipe when open. from the off position, turn the knob on the furnace gas valve to pilot position and push down on it as you turn. this lets gas flow to the pilot tube by the burner where you have you flame starter lit and waiting. once pilot lights hold down on button for 3 minutes or less. longer is better to be sure the thermocouple senses flame . then gently release the downward pressure and the pilot should stay lit and you gently turn knob to on. if pilot goes out you may have a bad thermocouple. be especially careful if its lp or propane as that gas does not disipate like natural gas and can virtually lay on the floor till ignited. also consider having the heat exchanger checked by a pro with a carbon monoxide detector. they do crack after a few years and can be deadly when they do. good luck
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How to Light a Furnace Pilot Light
Here, we'll explain the basic steps for re-lighting the pilot light of a gas furnace.
#1: Locate the Instructions Label on Your Furnace
Every furnace should have a label on it that tells you how to light a furnace. Sometimes, however, the printing may be small or the furnace area may be dark. In these cases, the label may be difficult to read. Keeping the following instructions near your furnace or in another safe spot where they can be located easily will make the task much easier.
#2: Find Pilot Light and Components
Near the bottom of your furnace is a switch that normally says "Pilot," "On" and "Off." Find this switch and turn it to the "Off" position. Wait at least five minutes. This is important because it gives the gas time to dissipate, which is necessary to avoid possibly starting a fire. While you are waiting, take note of the location of the reset button, which should be near the dial you just turned to "Off."
#3: Re-Light the Pilot Light
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. This should light the furnace pilot light. Once you are sure the pilot light is on, release your pressure on the reset button.
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There is really not enough information here to go on. If this furnace has a thermocoupling, the pilot will need to be lit manually. Follow the manufacturers lighting instructions carefully. If it still will not light you may have a dirty pilot assembly or a defective gas valve. Modern furnaces do not use a thermocoupling. There is no standing pilot light. Each time the furnace needs to be lit it will be done electronically. Many reasons why it wont light in this case. Safety control could be preventing it from lighting for safety reasons. A bad ignitor, ignition module, circuit board, gas valve, pressure switch, gas supply, induced draft motor, blocked or restricted flue pipe, cracked heat exchanger, dirty flame sensor, ect. ect. ect.
Check the pilot lt. If its out shutdown your furnace and call a repairman. If the pilot light is on, the flame sensor might have gone out. It's a long silver sensor that sits in the pilot light flame and senses when the flame is present. If it isn't working the furnace will automatically shut down.
That means that the furnace is throwing a code to trouble shoot whats wrong. Most of the time, furnaces will have a code list on the inside of the door cover to explain what each code means, some of them don't. Its hard to say what it could be without knowing where to start. However, answering a few questions with someone knowledgeable over the phone if possible could help speed things up, but it would involve you being at the furnace and seeing what happens before it throws the code. If you do have a code list, this would help tremendously.
Relighting Your Furnace's Pilot Light
Turn off the gas at the main valve at your utility box
Wait five to ten minutes for gas fumes to waft away
Get a long match—yes, a fireplace match, not a standard match
Set the gas valve on your furnace to "pilot"
Press the red button as you hold the match to the pilot valve
Keep pressing the red button for 30-60 seconds so the pilot can heat the
thermocouple. Release the button and see if the pilot remains lit
If pilot goes out, wait five to ten minutes and repeat the process
Once the pilot stays lit, turn the main gas valve back on
If the pilot light continues to go out, call a technician, who may need
to adjust or replace your thermocouple or adjust your pilot