Suburban furnace issue UPDATE
I have a Suburban SF-30-F furnace with Domestic single zone thermostat in my 2011 Wildwood trailer. I'm making a trip to Arizona next week and when checking systems, it is not working. Tests so fa...
Forum Discussion
wa8yxm wrote:
There are several threads around here with a full diagnostic procedure, I worked one up myself and posted it several times. Mine is specificc to a Dometic but for this Surburan is identical.... In fact even teh control board I had to replace... FITS SELECTED SURBURANS.
Since you've done half hte uob
Suspects: Propane flow. Is the orifice clear or clogged, an insect likes to nest there.
Spark gap. often too big no spark = no ignition.
Now in my case Ignition happened but the control board did not sense it.
This can happen due to a very dirty sensor or a bad sensor.
in my case it was a bad control board so I went with Dinosaur Boards replacement
NOTE bad control board can also fail to spark,, Since that's where it comes from.
All good recommendations. It definitely is lack of spark. Even if there was no gas, it should still have spark. The electrode is within 1/8" of the burner and the cable is less than 1 ohm so continuity is good from the board to the electrode.
I'm 99 and 44/100% sure its the board. ;)
