Furnace won`t blow hot air

[vicez]

Hello,

I am new in this and i just got my first weekend in my tent trailer. I have a Flagstaff 2002 model 206LT, just perfect for me and my family. The problem is that when i bought it i didn`t really checked the furnace, i saw starting the fan and got it. Now i realized that my furnace is not working. I have flame down, i put the thermostat on and the fan is starting but i got no hot air. Have any suggestions on what to start and check ?

[Ham_Bone]

Does it do this while hooked to 110 AC? Sometimes a weak battery will not be sufficient to blow enough air to activate the sail switch.

What does a sail switch do on a RV furnace?