My furnace has a dedicated fan switch is this normal?

Hello I recently purchased my first house and fall is not upon us. While the furnace was checked by the inspector to see if it worked it was not noted that something was odd.

I have gone to use it this past week and here is what I found.

Name: IMG_20151016_122436.jpg Views: 0 Size: 27.6 KB

As you can see I have a power switch and a fan switch. This stuck me as odd because I either have to leave the fan running 24/7 or come in and turn it on and off every time I want the heat.

I looked at my thermostat

Name: IMG_20151016_122351.jpg Views: 0 Size: 15.1 KB

and found it only had 2 wires

Name: IMG_20151016_122407.jpg Views: 0 Size: 22.7 KB

The furnace is a Lennox 180DF.

Fuel Type: Gas

House style: single story 109 year old Craftsman i believe

And the thermostat is a Honeywell RTH7400

I have tested to see if the thermostat can control the fan at all and it can not. I tried leaving the fan off but the furnace on and see if it auto started. The furnace kicks on and I hear what sounds like it might be a fan but it is not the main one.

I do not know much about furnaces and have not been able to figure out is this is a normal situation or not.

I would like to know what I should do.

Attached Images

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s