Nevada Rob Posted June 27, 2021 Share Posted June 27, 2021 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. Link to comment Share on other sites More sharing options...
Dr4Film Posted June 27, 2021 Share Posted June 27, 2021 (edited) 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 Link to comment Share on other sites More sharing options...
Nevada Rob Posted June 27, 2021 Author Share Posted June 27, 2021 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 Link to comment Share on other sites More sharing options...
Dr4Film Posted June 27, 2021 Share Posted June 27, 2021 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. Link to comment Share on other sites More sharing options...
Paul A. Posted June 27, 2021 Share Posted June 27, 2021 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. Link to comment Share on other sites More sharing options...
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