Inverter will come on with Battery 2 only

[Kevin4404]

I have a Zion SRT and the inverter will only come on with battery 2, not battery 1. Does anyone know why, and how to fix?

 

[rvkev]

Battery one needs water?

Battery one has a short?
Poor connection on number one?
Fusible link is blown out on number one?
Terminals are backwards on number one?
Check the voltage in number one, while isolated from number two.

 

[Greg and Mary Brannon]

Age and type(s) of batteries 1 and 2? Previous operational history? Were there any recent changes in the connections from the batteries to the inverter or in the batteries?

I'm not familiar with the Zion SRT 12V system or why/how one battery (bank?) or another would be connected to the inverter, but if that's relevant, please describe the system and its operation.

Greg.

 

[Kevin D Pem]

Roadtrek. Ok, if original set-up I wonder how you define b1-b2, is this from a battery switch? Or the fact there are two batterys?

My guess is there is a house,and chassis battery. If that's the case, the house Will never be wired to use the chassis battery.

If you have two house batteries, an amature separated the house batteries,not the factory. An inverter is considered a high load device and would not have been wired where you could only draw on one battery at a time by a professional.

To understand this study how loads effect discharge times. This can be studied on a website called the battery institute, if My memory serves. For me that study was in the early 2000's, maybe 2004 or so. So the website could have been lost,or the name may be different. That study was back when I was working on an electric/diesel hybrid boat.

 

[TheLooks]

Not enough info, nice stab at it Kevin.

 

[Kevin D Pem]

Not enough info, nice stab at it Kevin.

Usually wait for more info, but won't have much time for a while so thought I would try the shotgun approach.

 

[TheLooks]

Now now, you know how certain AI people feel about that.....

 

[Kevin4404]

Roadtrek. Ok, if original set-up I wonder how you define b1-b2, is this from a battery switch? Or the fact there are two batterys?

My guess is there is a house,and chassis battery. If that's the case, the house Will never be wired to use the chassis battery.

If you have two house batteries, an amature separated the house batteries,not the factory. An inverter is considered a high load device and would not have been wired where you could only draw on one battery at a time by a professional.

To understand this study how loads effect discharge times. This can be studied on a website called the battery institute, if My memory serves. For me that study was in the early 2000's, maybe 2004 or so. So the website could have been lost,or the name may be different. That study was back when I was working on an electric/diesel hybrid boat.

I have a firefly control system in a 2021 Roadtrek Zion SRT. It has 2 lithium house batteries. The inverter will come on with battery 2 turn on, but will not come on with Battery 1 on and battery 2 off. Even with shore power plugged in. I have looked for the inverter and the battery resets, but cannot find them. Is this enough info?

 

[Kevin4404]

Now now, you know how certain AI people feel about that.....

I have a firefly control system in a 2021 Roadtrek Zion SRT. It has 2 lithium house batteries. The inverter will come on with battery 2 turn on, but will not come on with Battery 1 on and battery 2 off. Even with shore power plugged in. I have looked for the inverter and the battery resets, but cannot find them. Is this enough info?

 

[Kevin D Pem]

It's comparable to a simple system. Troubleshooting always starts at the baseline, some people get confused by this approach, but it always returns to basics.

So! Is the inverter connected with a switching network in between, or directly to battery two?

You need that clarity!