BAC RV Club Forum

General Boards => Technical Support => Topic started by: David E Iversen on September 25, 2026, 06:44:06 PM

Title: Aqua Hot problems on my 2004 Monterey
Post by: David E Iversen on September 25, 2026, 06:44:06 PM

I'm not sure if it is a problem, but when I operate the furnace using the Aqua Hot, it blows air out of the AC ductwork.  It does blow air out of the floor registers as it should but also out of the upper duct system as well.  It is not ac air (cold) but it definately is not warm either.  Any thoughts would be appreciated.

Title: Re: Aqua Hot problems on my 2004 Monterey
Post by: Richard Davis on September 25, 2026, 10:11:30 PM

David
I replaced my original thermostat with the new CCC2 digital model.  If that is what you have, check to make sure the thermostat fan setting is on auto.  Otherwise, it will run the top ducting fan along with the AquaHot.

Title: Re: Aqua Hot problems on my 2004 Monterey
Post by: David E Iversen on October 05, 2026, 04:46:11 PM

Thanks Richard, It was not on auto.

Title: Re: Aqua Hot problems on my 2004 Monterey
Post by: Fred Brooks on October 06, 2026, 02:59:12 AM

    David,
  The aqua hot heat is controlled by the front air conditioner pc board. After removing the interior shroud assembly, you will see the attached wiring that goes to the unit. There are 2 blue 16 gauge wires that connect to the aqua hot feed wires coming from that unit. Before doing anything, I would do a RESET at the new 10 button t-stat. (follow instructions on the installation manual) That should clear things up. If not, Locate the 2 blue wires coming from the air conditioner and see if they are connected to other wires. Another possibility is if the air conditioner was changed recently, did the tech toggle the dip switch to the "ON" position on the PC board identified as "heat" or "furnace". Hope this helps, Fred

Title: Re: Aqua Hot problems on my 2004 Monterey
Post by: David E Iversen on October 07, 2026, 04:07:52 PM

Thanks Fred, I'll check that.