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[quote]Originally posted by Gruffy
The furnace fan is a killer. ----------------------
With two on board batteries the furnace may run one night if it is not too cold. I'm told by the experts that when the available voltage drops to 10.5 volts the furnace will no longer ignite. When using the furnace in a boondock situation It may be that there is not enough available onboard 12 volt power to handle much else beyond some lights aqnd the water pump. We have had to start the truck for more power early in the am to get some heat in the trailer. But our Pair of 12 volt batteries are two + years and 6+ years respectivly si that may have some bearing on things. They still charge up OK however.
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