Ultimate Guide to Onan EC-AGS+ (Almost)

The Almost Ultimate Guide to the Cummins Onan EC-AGS+ Automatic Generator Start system.
Learn why you need an AGS, how to install, and a fix to why many have had difficulties with this AGS.
Chapters:
00:00 Onan EC-AGS+
00:14 Install Overview
00:58 Do you need an AGS?
03:26 What about Lithium?
05:55 Why I chose EC-AGS+
09:19 What comes in Box?
14:05 Safety First
14:14 Temp Sensor Install
15:09 Gateway Install
16:13 Harness Install
17:28 Common Wiring Choice - Possible Issue
18:35 Eliminating Parasitic Draw
20:38 First Startup Test - Whats Wrong?
23:15 The Fix!
27:41 Start on Temperature
36:19 Start on Battery Voltage
36:40 Settings
38:06 Final Thoughts
39:18 Bonus Material
39:39 User Settable Minimum Runtime
40:30 Gray Wire Charge Parameters
41:27 Custom Lebels Red/Gray wires
41:56 Improve Temperature Controls
43:25 Heating Mode
44:20 Generator Hours Reset
44:49 Battery Voltages
45:55 Thanks for Watching

[@FreedomIsntFree2023]

Fantastic video! Great information!
I too am interested in this device but Onan R&D has come up a bit short it appears... The threshold for keeping the gateway/app active and the temp control issues are keeping me on the bench for now. There absolutely should be a high temp/low temp control point and the programming should allow for a cool down period once the low temp is achieved.
Sub'd to your channel in hope of an update video....provided Onan listens to their customers..
Thanks!

[@swalesutube]

I hope to get with Onan R&D to discuss my recommendations. The unit is still usable once you understand how it works, that’s why I did the video. I was mainly concerned with temperature control as I have solar to keep batteries charged. A few software tweaks and this could be a solid system.

[@mikesimmons4456]

Installing now and wanting to do the same but slightly different config between two batteries... but sounds like same issue which is grrrrrrr bad... I think.
[Onan 4K EVAP Generator + EC-AGS+]
I want to START the generator with my 12V RV battery (AGM with 450 CCA), but want the trigger battery to be SOC of my 48V EG4 system battery bank.
I am not using my generator for RV inversion power... but to connect to EG4 Chargeverter connected to power my EG4 48V battery bank (5.12kWh x2).
With what you found... I'm wondering/researching if can use wire(s?) from EG4 3K inverter dry contact to the EC-AGS+ to then use Red wire connected to 12V battery to start the Gen.
Phewwwww.... I don't know... we'll see.
-Mike

[@StarknightMT_official]

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