arrived in Cheyenne, Wyoming and temperature was 39 degrees F. got to A&B campground and settled in---started furnace and would not stay on, intermittent, sometimes runs for 1-3 minutes and as I am writing this it seems to be running ok. cycled thermostat temperature setting--nothing; turned on and off and back on--nothing.
coleman-mach analog type 60277 model in black.
called a local fix it guy---he's on the way.
Trailer is a Flagstaff 831bfkss (see signature) and is 2 months old to us. second trip------
have you had intermittent heat problem and what was it?
Gary
Did you purge the air from the lines by lighting your stove burners. If you have air in the lines it could cause it to fire the furnace then shut off. It then takes a while before the furnace will try to fire again.
repair guy--nice man from Laramie-John; replaced the high limit but that was not it. it is not gas supply. the unit will not stay on. trips out after 30 seconds almost all the time. babysitting the thermostat, up and down to reset, to raise temp in trailer. now need to stop by his place in Laramie for more repair.
Gary
its like something is loose or poor connection or heat sensitive.
Troubleshooting the furnace is not for the faint of heart.
Here is a guide, and you should print it out and give it to you repair guy.
BUT
One thing I would do is using a can of compressed air (or compressor), blow out the intake and exhaust ports. Bugs can build nests in them (screens are a great investment to prevent this) and slow the rate of air flow. This can cause a lean mixture on the inlet side or restrict exhaust on the outlet side; causing a non-combustible mixture to form shortly after ignition.
Bug nests on the fans themselves can cause slow rotation which can cause failure to light due to not closing the sail switch in the plenum. Sail switch problems demonstrate themselves by having the fan run for a few minutes but no heat; then complete shutdown. You need to cycle the thermostat on; then off; to get the thing to start again.
These guides and the wiring diagram are for the Suburban, but they are all very similar.
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Lou & Freya the wonder dog
2008 GMC Sierra 3000HD Allison Duramax
2019 Flagstaff 8529FL
the complete unit has been out, the sail switch replaced, the thermostat bypassed, the control board replaced, the high temp limit replaced and still trips out.
the intake and exhaust ports are clear, no bugs.
since i'm not near a dealer and am not in vital need we will wait till return to have repaired-replaced is better.
Has anyone ever had ductwork blockage to have the fan motor trip on thermals?
that's all that is left.
Gary
the complete unit has been out, the sail switch replaced, the thermostat bypassed, the control board replaced, the high temp limit replaced and still trips out.
the intake and exhaust ports are clear, no bugs.
since i'm not near a dealer and am not in vital need we will wait till return to have repaired-replaced is better.
Has anyone ever had ductwork blockage to have the fan motor trip on thermals?
that's all that is left.
Gary
Sounds like all the easy stuff has been addressed.
Only the common shaft motor is left.
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Lou & Freya the wonder dog
2008 GMC Sierra 3000HD Allison Duramax
2019 Flagstaff 8529FL
that is our conclusion but there is one other related to air flow being poor going through the floor ducting and preventing the right air delivery. this has apparently been known to cause sail switches and motor thermal problems. on our return to Illinois to be addressed by dealer.
Gary
Linear Mode
