Question about Dayton (3E379) Heater

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I have a Dayton gas heater Model 3E225

Burners will not ignite when turned on. (Pilot light is lite).

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  • rainyhal Nov 20, 2008

    The fan runs but the burns still don't ignite. Could the heat sensor on the left-side of the heater be bad?

  • allen78j20 Dec 21, 2008

    I am having the same problem. Pilot is lit and then the fan kicks on but the main burner does not. Sometimes if you let it run the main burner will kick on after 5 minutes or so. Any ideas?

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I Need a wire Diagram for a Dayton Heater mode # 3E225

Posted on Oct 10, 2012

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Does the main blower fan kick on? Also, if the heater is vented outside via a flue pipe, there may be a small (about 3 or 4 inches in diameter) vent fan that kicks on to ensure the exhaust fumes are evacuated through the flue pipe. If there's a problem with that fan, the burner won't light either.

Posted on Nov 20, 2008

  • Kory Ginther
    Kory Ginther Jan 25, 2014

    The burners are lite but I was wondering if there is a way to adjust them to get more heat out of them ?

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Related Questions:

1 Answer

Why does burners and pilot forced off after burners are engaged


We get asked this question many times.

If you light your pilot light, hold in the button and then when you release it and the pilot light goes out, generally you need a new thermocouple. Gas repairs can only be undertaken by a qualified gas technician so you can't do this job yourself.

The thermocouple is a safety device that recognises that the pilot has a good flame and is enough to ignite the main burners. The thermocouple open that valve to the burner.

In limited circumstances the thermocouple doesn't need replacing, either the shield that aims the flame to the thermocouple has become dislodged, or the pilot jet is a little blocked by debris. Either way, having the appliance serviced by a qualified gas fitter is the way to go. I am sure you will have seen news stories about explosions caused by gas leaks and faulty appliances.

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1 Answer

Pilot light


Hi the thermocouple is a long copper wire that goes back to the gas valve from the pilot .

i would clean the flame senser first , then check the pressure switch jump this out , then check the fan control or snap disc jump this out see if it runs if you need A THERMOCOUPLE then honeywell universal will do

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