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RV-Dreams.com Home -> RV-Dreams Community Forum -> RV Maintenance and Technical Tips -> Aqua Hot no warm air
Post Info TOPIC: Aqua Hot no warm air
Gpndavid


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Aqua Hot no warm air
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It has been 3-4 months since I used Aqua Hot (450D) for heat.  We have used it both electric and diesel for hot water and it seems to work fine.  Tonight it is 34 degrees, so I tried the heat (furnace) using both electric and diesel.  The burner fires up, all lights are green, all fans blow.  The air temperature at the register is about 52 degrees in both zone 1 and 2.  I have recycled the system several times, to no avail.  

I appreciate any advice on fixing this since it will be a few days before I can get it to a technician.  If you give advice, please be specific.  I have read forums that say "tap on the regulator valve and it will open."  What regulator valve and how big a tap?  Make that information useful.  I need something like "tap on the brass colored connection below the black panel with the pretty green lights using a small hammer."  I can access the Aqua Hot status panel (black with pretty green lights) in a driver's side lower bay. In the same compartment, is the boiler fluid reservoir which is full.  In the compartment on the opposite side, I can access Aqua Hot hoses, a grey nob thing with hoses going through it and the lower compartment thermostat.  

Your truly,

Wrapped in a blanket and holding a small hammercry



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USAF Retired 2010. Began full timing June 2015, ended Dec 2018. 2007 Allegro Bus 40QSP with 2014 Jeep Grand Cherokee Overland TOAD. Our blog: keepingupwiththejonesrv.blogspot.com. 
ticat900


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Most likely senerio is the flow valves are stuck. They do this when they sit idle for too long.I actually go out in the summer time and run my 450 just to exercise the flow valves. Take off the access panel to the motor side which is usually the control panel side.You will see two brass valves with hoses attached
the valves are side by side. while running zones lightly tap on these flow valves. they should open (make sure the zones are on and running)

 

http://www.aquahot.com/eSource/ecom/eSource/staticpages/documents/450-DE4_Service_Manual_REV_C.pdf

 

Go to page nine and there a nice picture of the set up.    keep this manual in your download files its all about the whys and hows of the AH450



-- Edited by ticat900 on Sunday 15th of November 2015 09:47:43 AM

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Gpndavid


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Thanks Ticat900. I have been tapping on those valves, but with the system off. I will override the cover shut off switch and try again.

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USAF Retired 2010. Began full timing June 2015, ended Dec 2018. 2007 Allegro Bus 40QSP with 2014 Jeep Grand Cherokee Overland TOAD. Our blog: keepingupwiththejonesrv.blogspot.com. 
ticat900


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as said system pumps(zones have to be active)



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