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Replace thermocoupler on a dayton model 3E474 furnace (how do I get inside the furnace to disconnect the thermocoupler from the burner)

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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SOURCE: I need a gas valve for a Dayton model 3E473A wall furnace

you can look for a gas that we go in place of the one you have, try national energy they sell gas valves and should have one to fit your heater , i would change the thermocouple as well .
hope this helps

Posted on Dec 08, 2008

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  • 12650 Answers

SOURCE: no ignition on dayton gas furnace. how hard is it

not hard but before replacing check pilot light and thermocouple for proper function and setting if pilot light not in right position thermocouple wont open gas valve if electronic ignition check for power and proper gap on igniter also check stat for proper function

Posted on Oct 31, 2009

koolbreezes
  • 540 Answers

SOURCE: i have an older model williams furnace co -

Check out the Grainger catalog, they will have everything that is obsolite but you might have to pay more.

Posted on Dec 18, 2009

kingbrizzle
  • 407 Answers

SOURCE: Fault Code on Dayton Gas Furnace

This happens when the furnaces tries to light to many times and doesnt succeed. If you stand in front of the furnace while it is coming on, you will be able to hear the problem. If its an electronic start, there will be a clicking sound, followed by the gas valve opening to start it. If it has a pilot light, make sure it is lit, then listen for the gas to come out, it will make a hissing sound. If no gas is coming out, first double check to see if the gas is turned on to the unit, if it is, then its possibly the gas valve. Oh, if it is electronic, and you hear gas, but dont see a glow inside the furnace, or no glow or gas, it could be the ignite. Hope this helps.

Posted on Dec 28, 2009

  • 221 Answers

SOURCE: Easy way to replace the thermocouple

I suppose it would be easier to replace the thermocouple than the thermostat. Once you have the thermocouple in your hand, the installation is self explanatory. If you describe the problem, maybe the correct solution will come.

Posted on Jan 10, 2010

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2 Answers

Why would the flame and pilot keep going out changed the thermocoupler


Remove the cover over the burners so an inspection of the heat exchanger is a bit easier. Take an LED flashlight and a small telescoping mirror and inspect the heat exchangers front section above the burners giving special attention to the two sections of the chamber on either side of the pilot light. Many times there will be a hole in the chamber or a crack that will allow the blower that circulates the air into the duct blow out the pilot light.

If you are handy enough, consider turning off the gas and remove the ribbon burners prior to performing your inspection. The pilot assembly is probably attached to one of the burners. Lay them on the floor in the order in which they install in the furnace as some furnaces have dedicated left and right end burners and most older standing pilot furnaces have the one burner with the pilot mounting bracket.

To remove, many times you gently pull backwards towards the gas manifold while raising up on the front of the burners. Once elevated enough, the burner then slips off the brass spud (orifice) and forward and out.

The next reason the pilot can go out is because the safety 'holding' coil in the gas valve is defective. Its responsibility is to hold open electrically a safety circuit proving the pilot gas is burning so that main gas can flow. The thermocouple generates just enough electricity to hold the safety coil open. Coil bad = pilot out.

If your furnace is over 25 years old, there is a good chance there is a hole or crack.

Feb 19, 2015 | Dayton Gas Furnace Heater

1 Answer

Pilot light on dayton gas heater model 3e469 wont stay lit


chech the flame sensor or thermocouple which ever it is equipt with. Sensors can be cleaned by lightly sanding them and therocoulpe's need to be replaced.

Oct 27, 2011 | Dayton Gas Furnace Heater

1 Answer

I am looking for a heater element for a Dayton Heater, model# 3E349B.


Dayton is a product of Grainger,. You can find them and the part on line (You'll need the Model # of your heater/furnace) http:/com/Grainger/rp_parts_ho/www.grainger.me.jsp

Hope this helps get you the burner you need.

Mar 07, 2011 | Dayton Gas Furnace Heater

2 Answers

Pilot runs gas valve clicks but no ignition dayton 3e226c


There is a small Allen head screw in the gas valve that can be removed to test for gas after the gas valve. When the gas valve opens, gas should be present at that port. If none, you have a bad gas valve. If you gas gas, then there must be a restriction at the main burner.

Jan 21, 2011 | Dayton Gas Furnace Heater

2 Answers

Pilot wont stay on furnance in the garage. About 20 years old


clean pilot and change thermocouple see if this works

Jan 07, 2011 | Dayton Gas Furnace Heater

1 Answer

How do I change the termocouple on an older Dayton furnace


Locate the gas valve,there will be three lines coming off the bottom and going into the burner compartment. The center one is the largest and is the main gas feed to burner. The one on right is usually silver and about 1/4 inch in diameter. It is the pilot feed line. The third is usually coppercolored ,this is the line for the thermocouple. You can trace thermocouple line down into burner comparment. The tip of the thermoucople usually slips into a friction fit mounted right in front of pilot burner.Slip old thermocouple out of holder and unscrew fitting from the bottom of gas valve. Install new thermocouple into pilot burner assembly,make sure thermocouple is fully seated and in direct line of pilot flame. screw fitting into bottom of gas valve. Set gas valve control to pilot,depress pilot button and light pilot. Hold pilot button down for about 2 mins.Tip of thermocouple should be cherry red. If it'snot try to reposition so thermocouple is more covered by pilot flame. Relese pilot button and if pilot stays on rotate gas valve control to on.Hope this helps you. Yhanks

Nov 20, 2010 | Dayton Gas Furnace Heater

1 Answer

I need to replace a gas furnace thermocouple on a Tempstar gas furnace. How do I do this? Part # SV9500M2682 on Tempstar model # NUG5100BHB2


HI follow the thermocouple lead back to the gas valve undo the silver nut foloow the lead back to the pilot and undone the nut on thermocouple or it may just pull out , or the burner might have to come out to replace it , if you arenot sure on this then a local gas fitter will do this .

Jan 26, 2010 | Heating & Cooling

1 Answer

No ignition on dayton gas furnace. how hard is it to install new gas valve on a dayton furnace


not hard but before replacing check pilot light and thermocouple for proper function and setting if pilot light not in right position thermocouple wont open gas valve if electronic ignition check for power and proper gap on igniter also check stat for proper function

Oct 31, 2009 | Dayton Gas Furnace Heater

1 Answer

Dayton Furnace - Pilot Light Goes Out but Fan keeps running?


Pilot lighted furnaces have a thermocouple made from disasimilar metals that when heated create electricity to actuate a relay that alows the gas to flow to the furnace.

When the thermocouple gets coated with carbon from the pilot lights constant burning it acts as an insulator and keeps the thermocouple from getting enough heat to generate electricity, a very good safety factor.

What you have to do is locate the thermocouple it should be located over the pilot light, you will see a gray substance around the thermocouple it will be hard like cement, take a knife and scrape away as much of the gray material as possible then sand the themocouple with a medium sandpaper until it shines, use one of you wifes emery boards, this should solve your problem.

Feb 24, 2009 | Dayton (4LX41) Heater

1 Answer

I need a gas valve for a Dayton model 3E473A wall furnace


you can look for a gas that we go in place of the one you have, try national energy they sell gas valves and should have one to fit your heater , i would change the thermocouple as well .
hope this helps

Dec 08, 2008 | Dayton 511 Utility Heater

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