Furnace fan question

[Swaggler]

I have a Flagstaff 21WRS V-Lite. The thermostat has a Lo fan speed setting and a Hi fan speed setting. I cam't get the Lo speed fan to work. It just runs at high speed wether the switch is set to Hi or Lo. I can't find anything in the owners manual. Does anyone know how this thing is supposed to work?

Thanks.

[RodeoGeorge]

I'm not absolutely certain, but I believe that the HI/LO setting is for the Air Conditioner. I do not know of a Furnace that has a two speed fan.

RodeoGeorge

[BillT]

RodeoGeorge is right The 2 speed fan setting is for the A/C only The furnace has to run at high speed all the time There is a sail switch in the furnace It needs the air at high speed to close Once closed it will let your heater work (Safety Item) hope this answer your question

[Swaggler]

Thanks. That explains why the fan won't run in battery power.

[Swaggler]

Oops...accidentally hit the send button...

I guess I should have titled this thread AC fan question.

Newb

[Goomph]

Originally Posted by Swaggler

Thanks. That explains why the fan won't run in battery power.

You mean the AC fan right ? Yes that will not run on battery power as it is part of the AC and operates on 110V.

Your furnace should be fully operational on 12v.

[Swaggler]

Yes. Correct. I did check the operation of the furnace and it runs fine on 12V DC. On my control panel there is a fan Hi/Lo switch that had me confused. The fan Hi/Lo is for AC only and not furnace.
Thanks.