Suburban NT-30SP Problem - Fiberglass RV
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Old 01-15-2015, 08:08 AM   #1
Junior Member
Name: Jon
Trailer: 1994 Coachman Catlina 29ft
New Jersey
Posts: 1
Suburban NT-30SP Problem

I have a suburban NT-30SP furnace in my camper. When i put thermostat on heat it takes about 15-20 sec for blower to come on then about 15-20 secs later the igniter clicks and lights flame, then produces heat for about 5-10 mins. So everything seems to work like its suppose to. Now the problem after the 5-10 mins of heat the flame goes out and fan runs continuiously way beyond 90-120 sec cool down cycle. Blowing nothing but cold air. O took furance out cleaned it with compressed air, replaced sail switch since heater was out, also replaced limit switch, and going to replace ignitor today since i have the parts. PLEASE HELP
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Old 01-15-2015, 10:02 AM   #2
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Bob Miller's Avatar
Trailer: Class A Motorhome
Posts: 7,912
You have landed on a molded fiberglass trailer site.

If it's in your Coachman (motorhome?) you might find more knowledge about that furnace on a site like Where it in a FGRV, I would suspect a circuit board problem.

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