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Gas craft heater: can start the heater but once i take my finger of the button the piolet light goes out

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  • booney10 Jul 21, 2008

    I have a gas craft gas heater and once I take my hand off the heater level knob that you press to ignite the heater turns off. Thanks

  • gjr23 Aug 01, 2008

    I have a pyrox 303 gas heater that will not stay on after you take your finger off the ignition button most of the time. You can get it going eventually and it may be fine for ages then it will turn itself off. Then the whole process starts again.

  • ctcanares Aug 30, 2008

    I also have a similar problem. After starting the heater and removing your finger from the LPG supply starter button the flame goes out. Any solution to this problem?

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4 Suggested Answers

chillmaster
  • 104 Answers

SOURCE: I have an old gas

Old heaters that have a "standing" pilot light that burns all of the time use a device called a thermocouple. The thermocouple sits in the flame of the pilot and when heated by the pilot, produces a very small amount of electricity (approx 30 mV) which the heater interperets as proof that the pilot is burning and indicating that it is okay to turn the main burner on. The thermocouple is a part that wears out and when it fails causes the exact problem that you are describing.

Posted on Jun 26, 2008

  • 37 Answers

SOURCE: Wall mounted 3 grate gas

your pilot has dust in it. Use a drinking straw and blow air across (not into) the pilot opening. this will remove the small particles of dust that are stopping up the membrane inside the opening. THis will make your pilot flame bluer and hotter and keep the thermocouple hot enought to produce enought magnetism to hold the gas valve open.

Posted on Jan 28, 2011

kel1guy2002
  • 3740 Answers

SOURCE: can't light a vulcan heritage

Hi and welcome to FixYa, I am Kelly.

What you are experiencing is the lack of a signal from the thermocouple to the gas valve. I.e. the thermocouple is not passing heat information at all. This is caused by either a defective thermocouple, a dirty mating area where the thermocouple connects to the gas valve or... an improperly positioned thermocouple that is not "in the flame" with the pilot lit.

  • First make sure the FIRE end of the thermocouple is in the flame when lit. (reposition if necessay)
  • Next disconnect the thermocouple by unscrewing the fitting on the top of the gas valve. (No gas will come out) Clean the metal mating area as best you can and then re-install the thermocouple. Just a good snug fit. Once you feel it come snug add 15 degrees of tightening motion with a wrench.
Attempt to light the pilot... wait 45 seconds to 1 minute while holding the pilot button down before letting it up. If it stays lit.... GOOD JOB. If it goes out the next step is to replace the thermocouple. If after replacing the thermocouple it does not stay lit the remedy is to replace the gas valve. There are no short cuts and the sequence of repairs is just as I stated in order.

You can remove your old thermocouple and walk in to almost any appliance parts supply or Plumbing and heating supply to purchase the correct thermocouple without a part number. They will match it up with yours.

Thanks for choosing FixYa,
Kelly

Posted on Feb 20, 2011

  • 11800 Answers

SOURCE: HI there,Gas Heater has been

This heater has a safety system: the gas valve has a thermostat that closes it automatically when the flame goes out. This system uses a sensor that needs a bit of time to heat up and trigger the safety - keep the valve's button pressed for about 10 seconds after lighting the flame to allow the sensor enough time to heat up.
If even after 10 seconds the flame shuts down after you lift the finger from the button then the safety system is defective and it will have to be replaced. Because this is about gas the repair must be performed by a pro. Luckily this is a simple job and the part isn't very expensive - all shouldn't cost more than $125.

Posted on Jun 04, 2011

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1 Answer

My vulcan furnace heater pilot extinguishes even after button for long period.


It sounds as though the Thremal couple is bad . some haave fire eyes . check to see that the little tube is in contact with the flame when you light the piolet and hold it for a minute or so . if it goesout again then it is most likey the thermocouple lead. hope this helps let me know Jon

Jul 25, 2011 | Air Conditioners

1 Answer

Can't light a vulcan heritage gas heater, the pilot light lights, but as soon as I try to lift my finger off the button to ignite the heater, the pilot flame always goes off.


Hi and welcome to FixYa, I am Kelly.

What you are experiencing is the lack of a signal from the thermocouple to the gas valve. I.e. the thermocouple is not passing heat information at all. This is caused by either a defective thermocouple, a dirty mating area where the thermocouple connects to the gas valve or... an improperly positioned thermocouple that is not "in the flame" with the pilot lit.

  • First make sure the FIRE end of the thermocouple is in the flame when lit. (reposition if necessay)
  • Next disconnect the thermocouple by unscrewing the fitting on the top of the gas valve. (No gas will come out) Clean the metal mating area as best you can and then re-install the thermocouple. Just a good snug fit. Once you feel it come snug add 15 degrees of tightening motion with a wrench.
Attempt to light the pilot... wait 45 seconds to 1 minute while holding the pilot button down before letting it up. If it stays lit.... GOOD JOB. If it goes out the next step is to replace the thermocouple. If after replacing the thermocouple it does not stay lit the remedy is to replace the gas valve. There are no short cuts and the sequence of repairs is just as I stated in order.

You can remove your old thermocouple and walk in to almost any appliance parts supply or Plumbing and heating supply to purchase the correct thermocouple without a part number. They will match it up with yours.

Thanks for choosing FixYa,
Kelly

Feb 20, 2011 | Air Conditioners

1 Answer

Wall mounted 3 grate gas space heater: VIN # 41201. ser. # 1410915. Piolet light won't remain lit to be able to light grates. Also need control knob (if avail) for same model.


your pilot has dust in it. Use a drinking straw and blow air across (not into) the pilot opening. this will remove the small particles of dust that are stopping up the membrane inside the opening. THis will make your pilot flame bluer and hotter and keep the thermocouple hot enought to produce enought magnetism to hold the gas valve open.

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1 Answer

I have ventless natural gas heater , u can lit the pilot , but when u let up off the button the pilot goes out . have replaced thermocouple the same problem pilot will not stay lit. have also used air...


When you light the pilot, hold the button in about 1 minute to satisfy the thermocouple. Once the thermocouple is hot and satisfied, turn the gas to "ON". You may have to extend the time a bit, but 1 minute is usually enough.

Best regards, --W/D--

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I have a model HE424M 33Mj/h gas Pyrox Firestar gas heater. I have just cleaned it and now it does not start. The pilot light is ok as is the spark but as soon as I let go of the centre button tha whole...


The pilot light has a thermocouple that allows gas to the pilot light while the flame is burning. If flame goes out it shuts gas off to the pilot jet. The thermocouple is bypassed by a switch during the initial ignition and once the thermocouple warms up after a minute or two of holding in the bypass switch, it should maintain the pilot. It seems that your thermocouple is faulty and needs to be replaced if pilot light keeps going out.

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RHFE-551A heater goes into lockout when starting from cold.


There are very few parts available for this unit. If all you have to do is wait for the unit to cool down and recycle the on/off button to start the heater, it may be one of the coils that open up the gas valve. To test if this is it, once the unit fails to start get your multimeter out and unplug the three coils on the gas valve and measure the Ohms across the tabs on the coils. You should get a reading between 1400 and 1700 across. If you get nothing, it is bad. The next thing to do is to remove the slide thermostat and clean it out using a Q-tip and some alcohol or one of those alcohol hand wipes. Lastly, inspect the unit for any bad connections and re-tighten the ground wires.

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1 Answer

Pilot light on my heating is lighting but once i take my finger off it goes out


You likely have a bad thermocouple. Go to a hardware store and pick one up. You will need to shut off your furnace and remove the little copper wire that goes into your gas valve where you are holding down the button to light the pilot. Don't remove the larger silver tube that is for your pilot valve to supply the gas to the pilot.  Follow the copper line and try to pull straight down out of the pilot assembly and it may slide right out. If it doesn't you will need to remove the pilot assembly so go ahead and remove the larger silver tube from the gas valve as well. Take out the one or two screws mounting the pilot assembly usually a 1/4 inch or 5/16 nutdriver should be the proper tool.  Once removed unscrew the thermocouple and put in the new one. Reassemble. Careful not to bend your silver pilot tubing too much otherwise you will need to replace that as well. Always check for gas leaks around your pilot tube after reinstalling parts. 

Nov 24, 2008 | Air Conditioners

1 Answer

When heater fails to start


if the flue is warm that would indicate that the flames lit for a short while. furnaces sometimes have limit switches that shut down the gas if the heat exchanger gets too hot. I would verify you have clean filters. and all registars open fully.
If the flames are not lighting verify gas valve is recieving the 24vlts. to open.
Also check ignition system it will be a piolet light or hot surface ignitor. you should be able to see both without much trouble. hs ignitor should get bright cherry red.

Sep 24, 2008 | Air Conditioners

1 Answer

I have an old gas heater when i go to light it the piolet light wont stay on when i turn the knob to make it hotter.


Old heaters that have a "standing" pilot light that burns all of the time use a device called a thermocouple. The thermocouple sits in the flame of the pilot and when heated by the pilot, produces a very small amount of electricity (approx 30 mV) which the heater interperets as proof that the pilot is burning and indicating that it is okay to turn the main burner on. The thermocouple is a part that wears out and when it fails causes the exact problem that you are describing.

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1 Answer

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On these older gas water heaters there is a gas control with temperature selection and below that is a removable cover. Once you remove the cover you can gain access to the pilot. You must rotate the knob on the top of the control to the pilot position. When in the pilot position, hold the red button down and light the pilot. Continue to hold the button down after the pilot is lit for about one minute. If when you release the red button the pilot goes out, try one more time. If it goes out again after releasing the button your thermocouple is bad and must be replaced. The thermocouple generates a millivolt electrical current that hold the gas valve in the operating condition when the pilot is lit. When the pilot goes out there is no heat to generate this small electrical field.

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