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Furnace Altitude Compensator
The Altitude Compensator boosts the voltage going to the furnace
making the furnace fan turn faster, compensating for the thinner air at
higher altitudes.
The Altitude Compensator may be set on HIGH at lower altitudes to
boost the amount of warm air being blown into the cabin, but due to the
small size of the cabin, this is usually not necessary.
At lower altitudes, below 4000 ft. in elevation, you should run the
furnace with the Altitude Compensator switch set in the LOW speed
position.
At higher altitudes, above 4000 ft. try the furnace first with the Altitude
Compensator switch set in the LOW speed position.
IF the furnace shuts down after about
30-45 seconds
:
Turn OFF the thermostat.
Switch the Altitude Compensator switch to the HIGH position.
Turn ON the thermostat and set to the desired temperature.
If the furnace again shuts down after 30-45 seconds, with the Altitude
Compensator switch at the HI speed position, there are a couple possible
reasons:
You are at too high an elevation for the furnace to operate, even with
the boost.
There is another failure in the furnace.
If the furnace runs for
1-2 minutes
and then shuts down, switching the
Altitude Compensator to HIGH, - WILL NOT HELP! If the furnace
runs for
1-2 minutes
and then shuts down, it is because the burner did
not ignite. This can be for a couple of reasons:
The propane is turned off. (turn on the propane)
You are out of propane. (fill tank)
There is air in the propane lines. (turn off the thermostat and turn it
on again to flush out lines. If after the third attempt, the furnace still
does not ignite, there is probably another problem.)
