My furnace appears to only have one speed. The fan blows at the same rate whether I have it on high or low with the system setting on heat.
The fan does have a high and low speed when running the Fan or Cool setting.
I did switch my thermostat from the OE manual Coleman Mach to the Digital 8330-386 model. However, I believe it was the same with the manual thermostat too.
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Hi Eric,
My "furnace fan" has high and low settings but does not appear to make a differance on either setting. Cool setting is a different story.
Regards,
Ted
Good. Then I guess mine is not broken.
Although I find it a bit weird. My previous motorhome had high/low for the heat.
You could all but heat the parking lot on high! lol
Due to the way an RV furnace works, I do not think they would put in a 2-speed fan.. here is why
When the T-Stat calls for heat the blower starts blowing,, When the wind speed is high enough a "Sail Switch" closes, then heat is generated (Assuming everything works)
Many have reported that as little as a throw rug over a heat vent can cut down the flow enough to prevent ignition, or low batteries (a very common problem) which slow the fan just a bit.
Thus a 2-speed fan would... Not close the switch if on low.
Linear Mode
