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My gas heater will stay on for around 5mins then it beeps and turns off. We have checked that the timer is off and that things are far away from it and this still happens. It is a gass heater that is attached to a gas main from the house not from a bottle.

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Could be overheating due to a lack of airflow because of an old filter, or it could be a bad limit switch.

Posted on Nov 05, 2008

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Pilot light keeps going out when we turn heater down, not sure why and what numbers selection means, please help


You didn't mention what type of heater it is. If it is a gas heater then the problem is most likely the thermocouple. This is because there must be a standing flame that keeps the end of thermocouple hot which in turn lets the gas valve stay on and that lets the gas to the burners.

Good luck,

Marty

May 06, 2014 | Heating & Cooling

1 Answer

I have a six-year old AO Smith Model 50-100 that goes out intermittently and is getting harder to light and stay lit. Had the thermocouple replaced today, and it still won't light and stay lit. I am...


1st thing I would check would be the chimney. Take a match and light it, stick it near
the draft hood of the water heater, be carefull it might be hot. If the match gets blown
out, then you have a backdraft problem. Because it does not happen all the time, perhapsit only does it when you have a strong wind.

Turn off the gass and break the union apart, turn on the gas for a little bit to bleed the
air out of the line. Turn the control on water heater to pilot or lowest setting. Follow
the lighting instructions, if it still does not light then my guess would be the gas valve.

Aug 30, 2011 | Heating & Cooling

1 Answer

Avenger 25. 2 months old. house is quite large and is smelling of gas, this smell is getting more noticeable. only occurs when the heater is on.


1 if you smell gas do not operate this unit until you find this leak or sourse of leak. one thing you can do is get a spray bottle and mix up a very soapy mixture of water and soap. before you trun anything on spray any connections , joints , or threaded piping leading to the heater, If you see bubbles forming any where on any joint you have a leak. keep at this until you are satisified there are no leaks at the joints. Next check all connections that are inside the furnas using a wrench you do not need to over tighten any thing but with gentle force look for a lose fitting.,, Then turn the heater on and spray all the joints again to try to find a leak. and check the bruners and see that they are all fired up. if you don't find any thing you might have to call a tech.
Just a note on new units like your some purge the fire box before they fire off . so when you smell gass is it all the while the unit is running? or does it go away? you might be smelling the purge in which case you may need to add a stack to the vent on the unit . Let me know what you find

Jul 24, 2011 | Heating & Cooling

1 Answer

My fathers Bosch water wizard tf 250 will not start. the water will flow but no gas will not ignite or come through the pipe to the heater. the gas bottle is full. thanks Dave Tooley


Dave, make sure that the gas valve on the Propane tank, is fully open and that the inline gas shutoff valve near the heater is turned ON. Those are the basic two things that would prevent the gas from flowing thru the gas line, to the heater.

If the above valves are ON, the problem then lies with the gas control valve on the water heater. If it has pilot light that has to be lit, make sure that the heater's gas control valve is properly in the PILOT Position, before attempting to light it. It must be able to be pushed ALL the way in and you should feel strong pressure pushing back at you (other than spring pressure). When you feel that, it's in the PILOT Position and ready to be lit. Once it's lit, continue to hold the Pilot Button in for 1 minute, then release it. If the Pilot stays lit, turn it to the ON Position.

Hope this helped you to troubleshoot and solve the problem. Please let me know. Thanks.

Jun 22, 2011 | Heating & Cooling

1 Answer

I have a Charmglow patio heater. I have taken it apart and cleaned all openings where the gas comes out, but the flame still goes out after 7-8 minutes. It lights fine but will not stay lit for more than...


From what you have described, it sounds like the Thermocouple is going bad and needs to be replaced. As far as not being able to relight the pilot right away is concerned ... that's a safety feature. The control has to reset itself, before you can relight it, if the pilot goes out on it's on. As it did in your care. It usually takes about 2 - 3 minutes for the control valve to reset itself.

As far as replacing the Thermocouple is concerned, it's somewhat of a specialty item, because of it being in a tall patio heater. However, armed with the Model # of your Charmglow Patio Heater, you can probably purchase one from the manufacturer, Chamglow.

Hope this helps.

Feb 14, 2011 | Heating & Cooling

2 Answers

I just had it installed and smell gas. if it says unvented , does it need vented or am i ok. im 73 yrs old and dont know much about gas heaters


An un-vented heater should never smell like raw gas, you may get an odor of combustion by-products but never raw gas. If you are getting the raw gas smell you either have a gas leak or incomplete combustion. Always follow manufacturers operation instructions that state "open window 1/4" to allow combustion air" If the unit is brand new, you will get an odor for 20 minutes or so of oils burning off of the heater but that smell should go away. Do you have a Carbon monoxide detector in the house? You should!

Feb 13, 2011 | Heating & Cooling

1 Answer

I have old rheem ruud hot water tank. it's down for 4 day's, i would like to get it started, but the thing i would like to find out is can i get it going by lighting it up by using lighter or not. The...


Yes you can light it with a BBQ type lighter (long enough).
If it lights and stays lit then you need to change the thermocouple (looks like a little pipe off gas valve)

In simplest terms, a thermocouple is a temperature sensor. Normally inexpensive, a thermocouple is standard on hot water tanks. If your thermocouple breaks or you feel it is not working properly, consider replacing it b?p=y23r90wnbq7oglkvtnbuhgyhrktxauzqpeoaddsf&t=18g7grtjm%2fx%3d1290445898%2fe%3d2143440281%2fr%3dacont%2fk%3d5%2fv%3d8.1%2fw%3d0%2fy%3dyahoo%2ff%3d2680761980%2fh%3dcg49imfjb250iibzzxj2zulkpsjzmjnsotb3tkjxn09nbgtwve5ivuhnewhys1r4yvv6cxbfb0fezfngiibzaxrlswq9ijq4mtmwnteiihrtdg1wpsixmjkwndq1odk4ota5njiwiia-%2fq%3d-1%2fs%3d1%2fj%3d6f060d4c&u=13gohjn6b%2fn%3df8a.bkwnpkw-%2fc%3d715481.14405591.14260180.13829426%2fd%3dlrec%2fb%3d6235626%2fv%3d1 lg.php?category_id=6&content_type=article&content_type_id=584031&key_page=1721642411054458764&site_id=1&bannerid=10089&campaignid=2945&zoneid=2&loc=1&referer=http%3a%2f%2fwww.associatedcontent.com%2farticle%2f584031%2fhow_to_change_a_thermocouple_on_your.html%3fcontent_type_id%3d584031&cb=ebe6534afe avw.php?zoneid=2&cb=1721642411054458764&source=&n=a14de4a9&slice=-1060-&dma=-0-&cty=-us-&content_type=article&content_type_id=584031&category_id=6&key_ad=1045292919&site_id=1&ad_pos=2&key_page=1721642411054458764&ac_url=http%3a%2f%2fwww.associatedcontent.com%2farticle%2f584031%2fhow_to_change_a_thermocouple_on_your.html rather than installing a new gas hot water heater.

Begin this project by shutting off the gas control knob on your hot water heater. Once you are sure that the gas is off, you should use a wrench to remove the nut that attaches the thermocouple to the gas hot water tank. This nut should appear to be securing a piece of copper tubing or other type of tubing. With the nut removed, you should also pull down on the tubing, dislodging it from the thermocouple.

Sometimes there is another nut that attaches the end of the thermocouple to the pilot bracket, if this is the case you should unscrew this nut as well. You can slide it down the tubing and keep it there until you need to replace it.

With the nuts that were holding the unit in place removed, you should be able to slide the old thermocouple out of the brackets that hold it to the hot water heater. You should then take it to a hardware or home improvement store and find a suitable replacement. Then follow these steps to install the new part and fix the hot water heater.

To change the thermocouple, you should press the end of the thermocouple into the pilot bracket as far as you can. If you had to remove a second nut to remove the old thermocouple, now is the time to replace that nut securely.

With the thermocouple in place, you should connect the lead to the control unit. Use the nut you removed in the beginning steps to secure the lead. You should then tighten it at least a quarter turn with a wench to make sure the lead is securely attached to the control unit of the gas hot water heater.

Now that the new thermocouple is installed on your gas hot water heater, turn on the gas shut off valve that you turned off earlier. You should be able to relight the pilot and the functionality of your gas hot water heater should be restored.

Nov 22, 2010 | Heating & Cooling

1 Answer

I can here ignitor sparking but no flame, on a Carrier RTU.


Can you see the spark? It shoud be around about 1/4" gap. Make sure the igniter is sparking on the burner. Can you smell gas or hear the gas coming on? The pilot if it has one could be dirty or if it does not have one then the main burner cross over may need to be cleaned. Be careful and stand away from the heater while checking.

Jan 04, 2010 | Carrier 38CKC036 Air Conditioner

1 Answer

Timer Won't Stay Off


I NEED THE MODEL# AND SERIAL# AND MAKE TO HELP YOU

Mar 30, 2007 | LG L1204R Air Conditioner

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