General Boards > Technical Support

Aqua Hot problems on my 2004 Monterey

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David E Iversen:
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.

Richard Davis:
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.

David E Iversen:
Thanks Richard, It was not on auto.

Fred Brooks:
    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

David E Iversen:
Thanks Fred, I'll check that.

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