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Propane gas dayton 3ve59 heater will ignite then puff go out WILL not start the burner

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Posted on Jan 02, 2017

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SOURCE: Dayton 3VE59 Gas Utility/Portable Heater won't

Just repaired one of these, problem was that main gas valve was not opening, valve is controlled by a vacuum switch, vacuum is created as fan blows air down tube past bent up metal flap near front bottom of heater (slight low pressure zone created). If vacuum switch is miss adjusted it will not close when fan is running and no gas flows. this is easy to check as vacuum switch also has a pressure port on it. With gas disconnected, remove bottom cover, locate vacuum switch (it has a hose clear plastic hose connected to it, in opposite corner is another hose connection, attach a length of hose to it that you can blow lightly into. With heater plugged in and no gas connected (USE CAUTION OF WIRE!!!), turn heater on you should hear after a few seconds the ignition and then a loud click as the gas valve opens, if no click blow lightly into end of your added tube, if you now hear a click the gas valve just opened. if you stop blowing you might hear the gas valve click again as it re-closes. If this is the case the vacuum switch needs to be adjusted slightly. THIS switch is hear for your safety, Adjust at your own risk!!! This can be done with a screw drive in the top, rotate screw slightly while checking if the fan alone causes enough vacuum to make the switch work. DO NOT over adjust. check safety operation before hooking up gas by placing a piece of cardboard or wood over the air intake and the exhaust to block airflow, if the air flow is blocked you should hear the gas valve drop out and reconnect as air flow is reestablished. Hope this helps

Posted on Feb 13, 2011

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Napoleon Fireplace propane Pilot won't light main burner even though gas flows in?


  • I'm going to assume your fireplace has a pilot light.
  • Follow the little holes in the burner that lead to the pilot light.
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We have a late ignition on start up, we cleaned the burners and replaced gas valve and still has late ignition.


if it has a pilot light is this too small causing it to light with a bang is what you mean with late ignition ??

Aug 22, 2011 | Dayton (3E227) Gas Radiator Heater

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Have a dayton 3F405D propane greenhouse heater don't know where to light the pilot light.


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Mar 30, 2011 | Dayton (3E405) Gas Radiator Heater

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Want to change a naturel gas to propane can it be done


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Jan 17, 2011 | Dayton (3E133) InfraRed Heater

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How to convert my heater from natrual gas to propane


you will need a converstion kit for nat gas to lpg try national enrgy they will suppy the parts you will need make , model number, serial number btu size , it will be a new pilot orfice , burner orfice and new reg or spring on the gas valve

Nov 16, 2010 | Dayton Gas Furnace Heater

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Can you sucessfully convert a Dayton Model 3E368C,


The orifices have to be made smaller for propane. You have to go 10 drill bit sizes smaller. Also the air gap on them burners has to be tweaked. Primary air is added to the lp at the orifice. The gas/air mix has to be close or the nasty yellow smutty stuff happens. The gas valve needs to be set for LP gas pressure and the pilot orifices need to be changed. Nothing to it old man.

Dec 26, 2009 | Dayton (3E386) Heater

1 Answer

Pilot lights but heater does notstart burning it sounds like everythings starting up its about 15 years old worked fine then one night smelled some gas shut it off next day would not work its propane


its most likely dirt/rust in your burner assy , but as its 15 year old and propane do your self a favour and get it inspected by a registered gas/propane engineer .
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I have a dayton furnace model 3e368a serial c8425580 wondering if it can be converted to propane?


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Jul 11, 2009 | Dayton Gas Furnace Heater

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Want to change Dayton 3E133E from natural gas to Propane


Would have to have conversion kit IF available. Must get from mfr. The Dayton brand is owned exclusively by W.W.Grainger. Not sure if someone else makes their furnaces for them. Start w/ Grainger, if they won't sell to you maybe they will give you the name of a company who will work on it. Good Luck!

Mar 09, 2009 | Dayton Electric Heater

1 Answer

Inefficient (big, yellow flame) on wall propane heater, using up propane too fast


A clue to what could be wrong is that you mentioned it took 10 minutes for the pilot to go out. It could be your gas valve. Get a technician in to check your gas pressure both before the gas valve and after. Have them check it as the water heater is running.

May 15, 2008 | Dayton Heating & Cooling

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