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When the gas boiler comes on the pilot light goes out after about 60 seconds then reignites itself a few minutes later.

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This is caused by a weak flame sensing device. As main burner ignitin occurs this creates a roll out condition , when this condition occurs it derives oxygen from the pilot light thus reducing flame signal and causing the pilot to drop off momentarily.

Posted on Nov 15, 2008

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CGA Mclain .Natural Gas boiler issue 70k btu with a effikal ventx damper, model RVGP. There is no blower for ventilation, no control board with lights. Pilot light will not stay lit. have already replaced...


hey Carli suspect you mean the pilot goes out as soon as u turn your gas control valve back to the on position!? If this is so, you will have to probable reset the flue spill switch located right at the exaust outlet. OR, SOMETIMES THEY HAVE ANOTHER LIMIT switch in the same circuit in series. If the pilot goes out when u release the pilot press down knob, then it is your thermo couple is loose or fininshed,or the pilot flame is not aimed properly at the sensor (thermo couple)

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The pilot light on my daughter's Worcester 240 combi rsf has gone out - how does she re-ignite it?


Hi, I looked up this unit for you and found out it is a hot water system. She needs to get to the main gas valve to light the pilot. This unit has what is called a thermocouple on it that keeps the pilot on, even when the boiler shuts down. Its just a matter of lighting the pilot light. There should be a metal plate with the directions on it at the gas valve to lite it. You will have a knob, more then likely red or black in color on top of the valve. It will say on, off, and pilot. It should be in the on position now. Turn it to pilot. Have some matches with you and a flashlight if you can. You will need to look back into the burner area to where your pilot light will be. The thermocouple is a copper colored tubing that runs right back to the pilot, as it has to get hot from the pilot flame to work. To start, depending on how far back you have to reach with the match, you may need to use a piece of solid cardboard rolled up, a small piece to light it and reach in. Turn the knob to pilot. Now, push down on the knob and hold it down. This lets gas get back to the pilot, so you must keep it down and light it at the same time. Once it is lite, you have to hold it down for at least a minute. Slowly release it, very slow. The flame should then stay on. Once it is on, turn the gas knob to on. With the thermostat set to come on, it will fire up and heat the water. If the pilot will not stay lite after you hold it down for 1 minute, and keeps going out, the thermocouple will need to be replaced. It is the copper line that screws into the gas valve and goes back to the pilot. You can get them at any hardware store for around $6.00. Maybe you can help her install it. It is very simple to do. I believe the pilot just blew out and she will need to light it. Just follow what I have told you, and she will get it lite. Good Luck to you.
Shastalaker7
A/C, & Heating Contractor

Apr 10, 2011 | Air Conditioners

1 Answer

I HAVE A 20+ BRYANT BOILER THE PILOT LIGHT IS OFF HOW DO I TURN IT BACK ON PLEASE HELP THANKING YOU IN ADVANCE MS I


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Hi. i have a vermont castings radiance stove, RDV40. the pilot light went out and won't reignite. yes, the gas is on. i've followed the manual -- turning the control knob to pilot and pressing the ignition...


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We have a Intertherm MAC 1378 gas furnace in out mobile home and it has shut off on us. There is still gas coming in, we checked the meter outside to be sure. But when we try to reignite the pilot light it...


Check to make sure the roof vent is not covered over with snow.
Very deep snow can block the intake to the furnace. You may need a ladder and a broom (or shovel) to clear the snow.
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Jan 03, 2009 | Air Conditioners

1 Answer

Gas boiler won't stay lit!


The burners and pilot need to be cleaned.
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Cozy Wall Heater - Pilot won't light - push button, lite pilot, hold for over 60 seconds then it goes out. Will not light or ignite heating unit. Pilot "light" seems weak when holding button - not enough...


If your pilot looks a little weak chances are the pilot tube has a sight blockage in it. You will need to turn the gas off remove the pilot tube and get access to the opening of the tube and blow it out with your mouth air compressor or something. Reinstall pilot tube turn gas back on and re-try lighting the pilot. Now should look stronger and if it don't hold the thermocouple is bad and will need to replace it. You might be able to get one at Lowes or a hardware store like Ace Hardware. let me know what happens . ken

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1 Answer

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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