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-   -   Ducane Gas Furnace fails to stay on (http://www.diychatroom.com/f17/ducane-gas-furnace-fails-stay-4469/)

franko 10-24-2006 04:42 AM

Ducane Gas Furnace fails to stay on
 
I tried to start my Ducane furnace recently.

I turned on the breaker, turned on the burner On/Off switch, turned on the furnace on/off switch and turned on the gas.

While leaving he top inspection pannel off I called for heat.

The unit's exhust blower goes on and the furnace ignition element glows for a few seconds.

After a few seconds the gas burners ignite.

After about 2-4 seconds the burners shut down.
This cycle repeats.

The furnace burners do not stay on to heat the house.

Any sugestions would be appreciated.

#CARRIERMAN 10-24-2006 09:42 AM

Hi franko

Pull and clean your flame sensor. This is the metal rod opposite of the ignitor. Shut power off to furnace before removing this rod. Use a wire brush DO NOT USE SANDPAPER! Let me know if this doesn't work, I will need a little more information.

Good luck.
RUsty

franko 10-25-2006 04:31 PM

Thanks
 
Dear Rusty

Thanks. It worked like a charm.

I'm not sure why since there did not appear to be any visable build up.

Thanks Again

Frank

baseball27 03-03-2008 10:18 PM

Hey usually some manufactures recommend using sand cloth and then going back over with a wire brush and thats just a suggestion. Glad to see you got it running.

barbara aguirre 10-04-2008 06:17 PM

Thank you, I have been trying to figure out this same problem myself!

will3 10-28-2008 01:33 PM

I need help with my ducane furnace not igniting. I Have changed the fan ignition board and checked the connections, still no flame from the igniter. I have also checked to see if the igniter was bad but it's still in good order. Help its cold!

dac122 10-28-2008 01:44 PM

Quote:

Originally Posted by will3 (Post 177914)
I need help with my ducane furnace not igniting. I Have changed the fan ignition board and checked the connections, still no flame from the igniter. I have also checked to see if the igniter was bad but it's still in good order. Help its cold!

What made you assume the board was bad? How do you know the igniter is still in good order? Is your draft inducer motor running?

will3 10-28-2008 06:21 PM

yes its still blowing

dac122 10-29-2008 07:35 AM

What's the unit's efficiency. What you checked and what else are you noticing? Have you checked chimney or intake (if >90+AFUE) blockage? What's the voltage to the igniter? Is your pressure switch working? Have you checked and cleaned the temperature sensor?

Again I'll ask: What made you assume the board was bad? How do you know the igniter is still in good order?

will3 10-29-2008 10:20 PM

I've checked to see if current was flowing through the igniter with a voltage tester. I have noticed that I wasn't getting any voltage from the igniter board (Honeywell). I have checked the chimmney and performed a flame test to see if any pull was taken place. Should I switch out the ignition board thats connected to my gas line?

dac122 10-30-2008 07:46 AM

Thought you already replaced the control module? How many boards you got in that thing? :confused1:

Is this an 80 or 90 AFUE furnace? Did you check your pressure switch or switches? Did you check the high temp limit switch?

At least we know you igniter is probably not the problem.

ostromk 01-16-2009 10:05 PM

i am haveing the exact same problem as described in the first post to the T how do i get the flame sensor out to clean it

dougsage 05-01-2011 02:54 PM

Hi - Sort of the same problem, exhaust blower comes on but the ignition element does not glow. Checked voltage - only 2.5 volts. Any thoughts for me?
Doug

Ducthunter 05-01-2011 03:53 PM

Quote:

Originally Posted by dougsage
Hi - Sort of the same problem, exhaust blower comes on but the ignition element does not glow. Checked voltage - only 2.5 volts. Any thoughts for me?
Doug

2.5 v to the igniter from the board? If so probably bad wiring or board, most likely the latter

#CARRIERMAN 05-01-2011 04:52 PM

Ducane frunace fails to stay on
 
Hi to all, it has been a while for me here. I have missed all you Ladies and Gentlemen. To help answer your question you may be working at the problem from the wrong end. The ignitor not coming on can be caused by a multiple of failures. Take your volt meter and insert a lead in each of the wires located at the plug. Start furnace into heating cycle, it could take as long as 1 1/2 minutes for you too get a reading at your meter. You will only show 120 volts for about 30 to 45 seconds. Unless this is a Ducane with the Honeywell smart valve system. Then you will read voltage about 30 to 45 seconds after inducer starts. If all safety devices are closed and pressure switch is functioning properly you will get a voltage reading for about 20 seconds. If you are getting voltage, ignitor is bad. If not, check all limit switches and pressure switch for proper operation. Most likely you will find rollout limit bad, (next to burners around burner box) or vestiblue limit, (black or brown limit in middle of furnace approx 2"X4"). Good luck, leave me a little more too work with if this doesn't work.

Rusty


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