furnace
I have a duo therm furnace in my trailer that will work perfectly fine on either shore power or generator but will not fire on battery's have checked battery voltage and they are at 13.78v. the fan wi...
Forum Discussion
I suspect you hav a dirty connector. It seams 12.7 v at the battery is not enough for the fan to run fast enough. 13.6 is . Pull the connectors and clean(the shop should have done that)
