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Heater kicks on then the pilot lights the gas after about 15 seconds the gas shuts down but the blower continues for a while as it should? replaced filter blew out internals with compressed air works once in a while but not often.

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It sounds like either your main burner flame sensor is going bad or you may have a partially blocked chimney and when the combustion gases heat up there is not enought draft.

Posted on Nov 26, 2008

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My gas Dearborn model#drc40mc pilot light stays lit.when I turn to on position and heater comes on , it burns high , even on low number setting, then after few seconds goes out taking pilot out also


clean/replace the flame sensor. Your heater doesn't recognize that it has lit and continues to try and light the gas. when the sensor doesn't tell the 'brain' it lit? it shuts down the gas for safety reasons.

Oct 19, 2014 | Heaters

1 Answer

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


Find where the gas line connects to the gas valve on the back of the heater, from the gas valve, follow a small aluminum tube going into the back of the heater. There may be a removable door to access the pilot assembly. If there is no aluminum tube, the unit has electronic ignition and no pilot lite. Turn the gas knob to off, then to pilot. Hold the gas valve in and with a long match or gas grill lighter, light the pilot. Continue to hold the knob in for about 30 seconds. After that, release the knob and check to make sure the pilot stays lit. If so, rotate the knob to ON. The thermostat will kick the burners on.

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

1 Answer

We have a fairly new heater. went to turn on the pilot light and it won't ignite. what do you think is wrong? gas has been turned on before igniting


Sometimes it takes a few seconds for gas to reach the pilot. When you place the thermostat knob/gas control in the pilot position you must then depress it (push it down and hold it down). Wait a few seconds while holding it down, then press the ignitor button with your other hand while continuing to keep the thermostat knob depressed. You may have to hold the knob down and press the ignitor several times. You should see a spark at the pilot if the ignitor is working properly. Continue to hold the knob down for 30 seconds after the pilot lights, then release the knob, it will pop up & you can then rotate it to lo/med/hi and the heater will come on.,

Dec 02, 2010 | Procom (177653) Utility Heater

2 Answers

FURNACE COMES ON AND SHUTS DOWN WITHIN 15 SECONDS


On a call for heat, the 24 volt thermostat sends a signal to the control module. The control module will indicate a call for heat with a light on the control either blinking or remain solid depending upon model. The inducer (exhaust) blower will purge all gasses from the furnace and pressurize a pressure switch. Once the pressure switch tells the module to continue, the electronic ignition will energize and send 120 volts to the igniter. The igniter will glow and you will be able to see it if viewed thru the small inspection port. Once the igniter gets hot enough, it sends a signal to the module opening up the gas valve (24 volts). Either a pilot will come on or the burner tube will ignite then spread the flame to all burners. Lastly a safety sensor will be looking for a certain temperature within a few seconds and the furnace will continue to operate and the room air blower will turn on in a minute or two.

What could go wrong? The unit will not run if there is no signal from the thermostat (bad thermostat or broken wire), the control module does not sense a signal from the thermostat (bad control), the inducer does not energize (bad motor), the pressure switch does not close (blocked vent piping, bad switch, plugged condensate hose), the igniter does not energize (bad control, bad igniter), the gas valve does not open or there is no gas (bad gas valve, broken wire, no gas), the pilot does not light (dirty pilot), the burner does not light (bad burner, plugged orifice, not enough combustion air), the flame does not spread to each burner (bad flame spreader, dirty flame spreader, more bad burners), the flame safety sensor does not detect flame (dirty or bad flame spreader, bad flame sensor, broken wire, bad control), or the room air blower does not energize (bad fan motor, bad control). When all else fails, check the ground connection for corrosion.

Nov 23, 2009 | Heaters

3 Answers

Unit shuts down after 1 or 2 min.


Yeah, I've got a solution. SHUT OFF YOUR GAS SUPPLY VALVE FIRST!!! If your pilot won't light or if it lights and kicks off soon then check the orifice. I've got a 30,000 BTU LP gas unit. when my pilot did light, the flame was not totally encompassing the thermocouple nipple which lies behind the sparker/igniter furthest away from the flame. It cause the thermocouple nipple to cool too much and shut off the unit. I took the unit off the wall. I undid the four screws on the back of the unit, which holds the glass front plate. Then I took apart the multi-sectioned brass piece that is attached to the gas feed line for the pilot with a 13 mm and a11mm open end wrench, or you can use a small adjustable and a set of pliers. The second brass piece, the 11mm one, from the gas feed line, is the orifice. It has a tiny little hole in the center. I stuck a pin in it and cleaned it out from some debris that had clogged it. You do not have to take off anything else but those two pieces going from the gas feed tube. I put it all back together and I'm back in business. Now if you do this and it still doesn't work, buy a new thermocouple. They're cheap. Somewhere between six and ten bucks last I looked, Honeywell makes them and they fit most gas units besides Glo-Warm. Have a nice Day. Cadge

Oct 10, 2009 | Desa International Blower Glow Warm Wall...

5 Answers

ProCom blueflame heater pilot light difficult to light


You pilot ignator is plugged.I take a small wire and run it in the hole every year and I also Blow the heaters out real well with air.THis has always worked far me.I need a phone number or email address to Pro Com because i'm having problems with a new one i just bought and I can't find the papework.Could you pleas eif you have this info email it to me
Good Luck
Jay
jaycalk@yahoo.com

Jan 07, 2009 | Procom (177653) Utility Heater

2 Answers

Heater shutting off


this type of heater is very sensitive to the state of the pilot since it uses a Renni type thermocouple to sense a low oxygen situation. Usually the pilot needs to be cleaned. If that does not restore operation only other thing to do is try replacing the thermocouple.
A low pilot will usually hold for a few minutes so I would expect that you have a bad thermocouple.

Nov 17, 2008 | Desa International Blower Glow Warm Wall...

2 Answers

Blower works but no heat


If in fact you have the above listed furnace, you do not have a pilot but electronic ignition. You will need to remove the front cover on the furnace, tape down the door safety switch and then have someone help you by turning up your thermostat to a very high setting. Watch and listen inside the furnace. There should be some blinking going on at the control board followed by a small blower fan starting up. Then after 10-15 seconds there should be a click followed by an orange glow viewed thru the viewing window to the burner section. In a few seconds the gas valve should click and the burners will ignite. There is a safety switch that will sense flame and then keep the gas going to the burners. If it does not sense it, it will shut it off within 10 seconds. If all is well so far, your blower will turn on in about 90 seconds after flame. There is a diagnostic code chart on the back side of the access door if you get an error code (blinking) on the control board.

Always check little things like air filter, condensate drain and broken or loose wires.

Nov 05, 2008 | Goodman GMS90703BXA Heater

1 Answer

Lighting a glo warm heater


Is this a new heater or have you had it awhile? If new, yuo may have air in the line that will need to be bled out. The heater has a gas valve with a pilot setting on it. Make sure the gas is turned on. Turn the knob to the pilot setting and depress the handle. Holding it down and at the same time, press down on the red button that sparks. You may have to repeat this a few times. Once the pilot lights, continue to hold down on the pilot knob for about 30 seconds. When uou release the knob, the flame should stay o. If it does not, replace the thermocouple. Once the pilot flame is steady, turn the gas valve knob to on.

Nov 29, 2007 | Rinnai Desa Vent-Free Infrared Gas Heater:...

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