Using Inverter Charger While Connected to Shore Power And Disconnected from Battery Bank

[gcp]

Hi there. I've just about completed my first ever solar/power system build out (diagram below) after much studying and learning from folks here. I have a question about using my inverter charger with shore power while disconnected from my battery bank.

Today I had the following conditions:
Camper was connected to shore power (30a), which goes directly into my Renogy 2000W Inverter Charger.
I disconnected the battery using the battery cutoff switch.
Inverter Charger immediately starts beeping, but shows no warning/error code. Just the "Fault" light was lit up. Will not stop beeping.
120AC systems continued to function just fine.

This made me wonder: is it not appropriate to use my inverter charger to power my 120v AC systems when connected to shore power but not connected to my battery bank? Should I have shore power routed to both the inverter charger as well as my AC breaker box?

I didn't see anything in the Renogy Manual about this, or in the Renogy support site. I haven't contacted them about it yet because my experience with them is like everyone else's: not helpful. Don't get me started on Renogy - if I could do it over again, I would not buy anything from them.

I appreciate any advice you can offer. Thank you!

 

[LVLAaron]

... Why disconnect the batteries?


I'm going to assume that the Renogy inverter charger wants and expects batteries to be connected.

 

[LVLAaron]

And man, you sure fit 10 pounds of poop in a 5 pound sack! that's a lot of gear!

 

[gcp]

... Why disconnect the batteries?


I'm going to assume that the Renogy inverter charger wants and expects batteries to be connected.

Fair question. It's certainly not something I'd normally be doing. I wanted to see if it was possible to keep the AC circuits powered while the DC circuit was disabled.

And man, you sure fit 10 pounds of poop in a 5 pound sack! that's a lot of gear!

Hahaha, yeah on paper it sure looks like a lot! It's all pretty discreetly integrated though. The only place where it may seem ostentatious is all the solar panels on the roof.

 

[LVLAaron]

Cool little rig. I just got a Geo Pro 15TB a few weeks ago!


I'm going to say the Renogy inverter charger expects a battery. I would talk to Renogy to verify that... but I'd put money on it.

 

[gcp]

Cool little rig. I just got a Geo Pro 15TB a few weeks ago!


I'm going to say the Renogy inverter charger expects a battery. I would talk to Renogy to verify that... but I'd put money on it.

Thank you 2x!

Congrats on the new tiny camper! Very similar to my AR-One 14RB! Where will you take it first?