Furnace low voltage limit
Hey All, What do you suspect the lowest voltage is that I need to "ignite" my furnace? Everything about my furnace works great on shore power or above 12.1V. Under that, the sail switch does no...
Forum Discussion
May be your sail switch or you need to clean the blower.
Does the furnace come on, blow, then stop blowing? In that case the sail switch is not allowing the furnace to run as it thinks there is insufficient airflow.
In our case below 5,000 feet no problem.
At 6,000 ft with a fully charged battery no problem.
However, if the battery is discharged some the furnace shows the above behavior. If I start the truck then it gets enough voltage to spin the blower fast enough for the sail switch to allow ignition. (Used remote start on the truck several weeks ago at Mammoth campground In Yellowstone when the cold front mover in.)
Above 7,000 ft our furnace will not ignite.
Does the furnace come on, blow, then stop blowing? In that case the sail switch is not allowing the furnace to run as it thinks there is insufficient airflow.
In our case below 5,000 feet no problem.
At 6,000 ft with a fully charged battery no problem.
However, if the battery is discharged some the furnace shows the above behavior. If I start the truck then it gets enough voltage to spin the blower fast enough for the sail switch to allow ignition. (Used remote start on the truck several weeks ago at Mammoth campground In Yellowstone when the cold front mover in.)
Above 7,000 ft our furnace will not ignite.
