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Duo Therm furnace won't ignite Heather 1-21-12  
I have a 99 national RV Tropi-Cal. Duo Therm Furnace unit...No heat...I can hear igniter trying to light 3 times and heat. Everything seems to be running properly. Any thoughs?
Re: Duo Therm furnace won't ignite Keith 1-21-12  
Hi Heather, If the furnace is working properly... I'd have to guess there's a problem with a heater duct that has come loose, or, some RV companies put a flap door on the in floor ducting at the furnace, possible it's stuck, if there is one. Is the front access panel secure to the furnace? This would allow the heat to just flow out of the furnace instead of feeding the ducting. Hard to say without seeing it. Just some ideas, otherwise have an RV Tech check it out. Good luck
Re: Duo Therm furnace won't ignite Heather 1-23-12  
Thanks for the reply Keith. Maybe I was explaining incorrectly. Thermostat is working. Everything seems to be working fine just no heat. On the outside unit no heat coming out of the exhaust ( as far as I am aware there should be hot air since there is a sticker that reads "Caution Hot"). I hear it going through 3 cycles of clicking attempting to light. As far as I can tell it is not igniting. All contacts are clean. No Bees nests either. I also can not see a flame or spark. The space where they have the outside unit is such a small cramped space it hard to see anything all.
Re: Duo Therm furnace won't ignite Keith 1-23-12  
Hi Heather, sorry, maybe I misread.... it's hell to get old... I emailed you some info. Hope it helps! Good luck
Re: Duo Therm furnace won't ignite Chuck 3-18-12  
I have Duo Therm furnace i push the pilot light switch in but my pilot light will not light if it does it will light but goes out after it gets up to temp. then it will not light no matter what i do.
Re: Duo Therm furnace won't ignite gary 1-11-18  
80s duo therm heater will not ignite.. it trries over an over but dont light. air bluows fine but just no heat... any thoughts
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