Suburban Furnace Problems
So my dad gave me his old rv that he just replaced the main board in the furnace its a Suburban model NT34 S and it seems to run fine about 3 time, then it goes to ignite the 4th time and will not ign...
Forum Discussion
D.E.Bishop wrote:
I vaguely remember that this issue has been discussed before and cannot for the life of me remember exactly what the solution has been. I believe that it was replacing the board in the furnace.
There are a couple of things that you can check, first is to make sure the edge connecters are clean, second is to check and see if the board is putting out the 12 volts needed to activate the solenoid on the forth try.
It would seen to me that the thermostat is working, otherwise the furnace would not try to start. That leaves either a really weird valve or a bad board. I vote for a bad board.
Most RV shops have a test device to check the boards but they may not duplicate the thermostat starting and stopping four times.
1. Yes, the tester cannot duplicate the 4th try
2. He stated the control board was already replaced. Doug
