Multiplus-II 2x120v overload alarm - air conditioner and generator

DIY
, , , ,
1

It’s warming up in Texas! I attempted to power on my air conditioner today and the inverter shut itself off. I had shore power hooked up to my generator - it’s a WEN 3500W inverter/generator (4500 W surge-rated). Before installing our Victron system last year, we could start and run an A/C unit on the generator so I expected it to work. Do I need to adjust some settings? Any ideas/suggestions?

After a few moments the inverter came back on is working fine but it’s a little warm in the camper!

Here I am: VRM Portal - Victron Energy

2

Hi @Rob1,
Did you wait for the multi to be sync with your generator? How much power does your ac draws?
I think the generator’s signal got out of multi specs so it could have opened its relay to disconnect shore.

You should probably look at dynamic curent limiter, boostfactor and power assist to ease sudden loads for your genset and also change the current limit, because 50 amps is too much for your generator.

In last resort, you could enable weak ac, but I don’t think that’s the problem.

What are your setting in ve.config?

3

As the airco is consuming too much even for my batteries, i connected it directly parallel to the multiplus ac-in.

4

That was my smaller 13500 BTU A/C unit. I have not measured current draw. How would I know how long to wait for the multi to sync with my generator?

Thanks for the leads and tips! Dynamic current limiter seems promising.

My ve.config settings: Higbie_Imagine_3100RD_c0619ab88f7a_inst_ttyS4_Interfaces_Mk2_Tunnel.rvsc (4.0 KB)