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lcv800 01-27-2018 07:04 AM

Automatic Generator Start
When you order a Riverstone Legacy with a generator, does it come with an AGS? If not, wondering how much it costs to add. Message left with dealer and am waiting for a response. Thanks,

Fishrsafe 03-01-2018 06:23 AM


Originally Posted by lcv800 (Post 1716131)
When you order a Riverstone Legacy with a generator, does it come with an AGS? If not, wondering how much it costs to add. Message left with dealer and am waiting for a response. Thanks,

Our 38 FB2 did not come with an auto gen start, also interested in what is involved in having one installed and the cost.


lcv800 03-01-2018 06:41 AM

My dealer says he is checking with the local Onan dealer for a cost. Somewhere I heard around $500-$700, but don't quote me on it.

Fishrsafe 03-01-2018 07:06 AM


Originally Posted by lcv800 (Post 1743713)
My dealer says he is checking with the local Onan dealer for a cost. Somewhere I heard around $500-$700, but don't quote me on it.


I think this would be a very helpful feature. Would be nice if it were standard when ordering the generator option.


GFAR 03-26-2019 08:17 PM

Any more info on the cost for this?

emm-dee 03-26-2019 08:28 PM

I have the auto start feature but didn’t know it for several months after delivery. Rather than trying to post a lot of info I’ll direct you to the thread that explains how to find it, or install it.

GFAR 07-10-2019 06:13 PM

Can this be added on the existing one control or do you have to change whole board? I do know that all 3 ac have the switches on them! Do they have a diagrams of what is needed? I have the onan generator already!

Boostable 08-02-2019 10:12 AM

I know I am kinda new here (first post) but I am taking delivery of a new 38MB on Saturday and have been inquiring about the same thing.

If we are talking about the integration on "OneControl" panel I spoke with LCI about it and this is what they said.

It requires a module that gets hooked up on the can bus to support auto start. But in needs to installed during the manufacturing process due to wiring.

They also said they don't sell the modules separately and from my research there are tow different models "gen1" integrates genny control into the panel, "gen2" does the same but includes the autostart function.

However I DO BELIEVE (found a couple online) that you can buy the module and wiring does not appear to be rocket science.

Here is the kicker "software versions" of the control panel. Supposedly LCI does not offer software upgrades, but your dealer might be able to get it done.

Without the proper software version you might not be able to control it anyway. Most recent builds have the needed software.

But wait, here is the work around. Once the genny is hooked up and identified in the system you can control and manage stop/start/autostart with the phone app.

Please take this information at face value has I have yet to personally verify any of it. (don't have the 5th wheel yet) but will get started on it once I get it home as auto start is a MUST for me.

There is always the option of using the modules from Magnum as well.

I hope that helps in some way.



GFAR 08-02-2019 08:32 PM

I am looking at the energy command 30 that onan has! Checking to see if works ! Let me know what you find out!

Boostable 08-04-2019 07:06 AM

The EC30 from Onan is definitely an option and looks to be fairly straight forward baring any issue running the cable. That will be my option 2 if I can't get the LCI setup to work. We purchased the MB yesturday and will have it home in a couple weeks to start testing.

GFAR 08-04-2019 08:45 AM

I am hoping that the wires are run to the power control, should make it easier I would think!

Boostable 08-19-2019 07:36 PM

Here is a quick update on my research.

I have found FIVE options to add AGS. Each has its own set of positives and negatives. But here is a quick summary of the four that made the cut and the two that are on my short list and why. I omitted the fifth options as it was just an emergency (no power) and start generator option.

My initial objective was to have an AGS that would monitor both DC Voltage and Air Condition demand.

The options are from Lippert, Dometic, Magnum and Onan.

Lippert: This would be ideal as I have the One Control system and could theoretically control the AGS with the app.

To monitor DCV: AGS Module #709940
To monitor AC: AC Tri Zone Module #709169

Pros: Easy DCV monitoring.

Cons: AC required another module and home runs to all AC Units. Not a small feat.

Dometic: As i have a stand alone Dometic 3 Zone AC system this is fairly straight forward.

To Monitor DCV: N/A
To monitor AC: AC Control Unit #3312020

Pros: Straight forward wiring in with current AC units for AC Control fairly simple. Monitoring AC would surely be enough to keep up with DCV needs.

Cons: No direct DCV monitoring, but should be OK.

Onan: Energy Command 30. Would replace existing Onan start control and use some/all of existing wires plus additional as needed.

To monitor DCV: EC30 #018-02030
To monitor AC: AC Control Module #3312020

Pros: Seems straight forward for gen control, uses existing wires. Independent of all other systems.

Cons: Requires AC Control unit like dometic option above and is by far the most expensive option.

Magnum: Complete stand alone system.

To monitor DCV: ME-AGS-S
To monitor AC: Same module

Pros: Standalone, set it and forget it. Can be installed right near generator for ease of install. One of the cheapest options.

Cons: None


All options above will require a harness for your generator. In my case Onan 5500 would use #044-00075

My top two choices are the Dometic and the Magnum options.

The Magnum is pretty straight forward requiring a single run to a monitor/test/temp panel that gets mounted in the RV to monitor temp. All other connections are done in generator compartment to gen, bat, etc.

The Dometic option is the cheapest option only needing to add a AC control module but would require some additional wiring into CAN bus wiring for AC control, but doesn't appear to tough. A little more research needed to make my final decision.

Ok, I know that is a lot of information but perhaps that will help someone else down the road while researching.

GFAR 08-19-2019 08:00 PM

Lot of info! The magnum sounds the easiest by far! I think the ac connection to the other systems like the ec30 could be a problem for me pulling wires ! How much is magnum system

GFAR 08-19-2019 08:30 PM

My 5500 is propane , looking on line I do not see a listing for 5.5 HGJAB. Maybe Iím looking in wrong place!

Boostable 08-19-2019 08:59 PM

If im not mistaken it should be the standard 3 wire setup. I can see if I have a list for that.

GFAR 08-25-2019 07:22 PM

I think you are right! You done anything thing yet? I am still thinking, probably going to be winter time before I do unless I get a deal and some help to do since Iím not an electrician

GFAR 08-25-2019 07:51 PM

My Dometic units have the dip switches already do you still to purchase kits for each?

Boostable 08-25-2019 08:01 PM

I am calling Onan tomorrow for a little clarity on a couple of questions. It is definitely down to the Onan and the Magnum setup. I have been under/in the belly of the 5ver and I don't see either one being a problem to get the wires run and hooked up but the Magnum is obviously easier.

The Magnum is very simple to install, but the one thing that I don't like is that it has a minimum run time of 1Hr once started. So essentially I set the start temp, temp rises, generator starts, 60 secs later AC's kick in, cool off in 10/15 mins and the generator continues to run for another 45 mins. Then the cycle will start all over again. Seems like a lot of potential unloaded run time.. But maybe I am over thinking it.. lol

The Onan on the other hand can run for as little as 15 minutes and actually start/stop based AC demand. Temp goes up in the RV, AC sends a demand request, generator starts, 60 seconds later the AC kicks on, runs to set temp, shuts down, sends a stop command, generator shuts off. All that can happen in as little as 15 mins. The generator stays idle until the next Air or DC demand.

Seems like a lot less run time (ie propane burn) with the Onan, but once again I could be overthinking it.. lol

Anyway, I am calling Onan tomorrow to verify a few part #'s, config, etc. and will be ordering one or the other this week for sure. I have two weeks until our first tailgate (dry camp) weekend, so I need to be ready!

Boostable 08-25-2019 08:04 PM


Originally Posted by GFAR (Post 2170765)
My Dometic units have the dip switches already do you still to purchase kits for each?

For the Magnum you don't need any control module for the others including the Onan you need just 1. It goes inline with the others/controller and the Gen dip switch gets set in that unit.

GFAR 08-25-2019 09:34 PM

Keep me posted! Football tailgate time!

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