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QUESTION:Can anyone help me ?
I have a Suburban RV Furnace model NT30M.
Fuel IS getting to the furnace.
Electric IS getting to the furnace.
There is no spark and no gas into the furnace.
I can't figure out if it's not getting fuel(Selinoid or thermo
coupler)so it won't spark, or it's not sparking(Circut board)so it's
shutting off the fuel.
Does anybody know what is the most common of these two scenarios ?
ANSWER: One problem that can occur:
The spacing of the ignitor can increase with age to the point that it is too
distant for sparing to occur. The furnace manual tells you the correct
distance and how to adjust it.
I my case the furnace would operate and then stop heating, operate and then
stop heating, etc. After reading the manual and checking the ignitor
distance I found it needed setting. I set it and haven't had a moments
trouble since.
If the spark gap is too great, the ignitor won't spark and the furnace won't
ignite.
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