AquaHot Back-Up Battery

[Nevada Rob]

According to the AquaHot 600D manual, a second battery should be installed to keep constant 12VDC should the coach disconnect be activated during the diesel burner process. I do not see any secondary back-up battery.

[Dr4Film]

Robert, can you point to where you read about having a secondary back-up battery?

I have scanned both the owner and service manuals for any reference to requiring a secondary back-up battery and haven't been able to find any.

Normal operation requires a minimum voltage and if it drops below that minimum the unit with shut down to protect itself from damage.

Edited June 27, 2021 by Dr4Film

[Nevada Rob]

I believe the idea is that if the unit looses power during the time when the burner is firing, the cooling fan will stop as well causing a concentrated heat spike. The more I think about it, I am going check voltage at the control board with the disconnect switch off. It may be hard wired from the batteries for this very reason??AHE-600-D01_AHE-675-D01_Service_Manual_Rev_A.pdf

Section 5 page 45AHE-600-D01_AHE-675-D01_Service_Manual_Rev_A.pdf

[Dr4Film]

My Aqua-Hot is wired directly to the House Battery Bank and I suspect that yours is also. I don't believe Monaco wired any of the Aqua-Hots through the House Battery Disconnect Switch specifically for that reason to protect the burner.

[Paul J A]

Aquahot & Hydrohot Manuals & Product Information

http://www.aquahot.com/Library.aspx?fbclid=IwAR2z7yNImbK--TmsFq0M8kKD7BQflefadEtW_xfxeAsHQelTOw7L7kabhkE

Forgot where i got this link. Lots of great information. There may be something there for ANYONE who has either product or just for casual reading.