Suburban NT 34 Propane furnace

[Jim & Mitzi]

Recently bought a Avion 34' with above furnace in it. Furnace does nothing, so far. Spent most of day chasing wires ( 12V ) to find there is 12v to the furnace plug on the side of cabinet. The blower does not even come on. According to several Suburban wiring diagrams there is a OFF / ON switch within the furnace cabinet. I would assume it as accessible from the outside and furnace does not have to be removed to operate the switch. H e l p Is there such a switch and where is it ? In advance, many thanx for the support.

[mayco]

My original ('82) nt series furnace did not have an "on-off) switch, my new nt series furnace does and its near the wire connector. So very well may depend on the year of the furnace as to the on-off sw. If youve got 12volts to the furnace and the thermostat is calling for heat, the blower should kick on immediately for about 30 sec before it tries to light. If the blower isnt kicking on then you will need to determine if its a blower issue or control board. Either one will require you to remove the furnace. It does slide out from inside its metal housing but usually a real pita to get to. Good luck!

[thesignlady]

Not the same suburban furnace but maybe the info in this manual will help. I know in our Suburban DynaTrail furnace the issue was the solenoid was loose and the thermo couple was dirty


http://www.airforums.com/forums/f427...al-131134.html

and

http://www.airforums.com/forums/f427...er-131137.html

Hope this may help some :-)

[Seabloom]

One of the quickest things you can do is bypass the thermostat. When I bought my 76 Overlander the thermostat was not closing the circuit. Depending on your ability, remove the two wires going into the back of the thermostat, and touch them together with a jumper. Closing this circuit will send the start up signal to the furnace. Both of my t-stats were broken (furnance and catalytic heater). The new suburban ones are about $20 / each.

Good luck, hope it is as simple for you as it was for me.

[Jim & Mitzi]

Not the news I had hoped for. :-). But I will pursue as U suggest. Many Thanx....at least it's spring..


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[Jim & Mitzi]

Thanx to all responders. I think the wisest move is remove the furnace, clean it up, lube appropriately and find the fault. Again. Thanx.


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