Mark
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Mark
Hi @mrkjamesbb
It's likely gagging on the aircon 'start spike' because you've removed the ability of it's own inverter to cover it. It will honour it's own passthrough limit, and won't tolerate the spike.
Try leaving it turned just 'on', the functionality will be the same, and that spike will be covered by it's own inverter, right up to it's passthrough limit plus it's own inverter spike capability.
If losing shore power isn’t a concern, the MP in the “On” setting will assist sagging shore power to keep everything happy. It’s likely that other high inrush loads, maybe other ACs, are causing the shore power to sag outside acceptable voltage for your MP. The factory setting will accept anything from 94-143 volts, so it sagging (or surging!) outside that range might damage your AC, so it might be a blessing in disguise.
There is also a WeakAC setting for badly distorted incoming voltage. I have not messed with that, but it might be worth reading up on. Also, check to make sure the factory ranges haven’t been narrowed by whoever set the device up initially.
Factory settings are in Section 5. Configuration on page 17 of the online manual.
There’s no way I’m leaving the MP in “inverter” mode while plugged into shore power with the air conditioner on. If there is a power outage, the inverter will attempt to run the air conditioner with the batteries. This will immediately blow one of my fuses. I’ve had a 250 amp fuse blow before doing that, and now I always stick it in charge only if running the aircon.
I rarely plug into shore power and only need to if I wanna run the air conditioner. The only loads I use are AC fans, AC phone chargers, and a toaster. Everything else is DC. It’s a small trailer.
The turning off while plugged into shore power and on charge only mode happens without the air conditioner on. It’s definitely not turning off because the aircon’s load. The MP is picking up on a sag (or surge) in the shore power and automatically turning off for a few seconds in order to, like you said, protect my load appliances.
It mainly happens at campgrounds out in the boonies and happens less if I use my adapter and plug into a 50 amp plug rather than the 30. I’ve experimented at the same campground.
I’m on the road right now for the next six months and don’t know how to change these settings or what settings to change.
I did recognize the “weakAC” setting as possibly something that may fix this issue while researching today, but I’m not sure exactly what it does. I understand that it works for a dodgey generator but not sure if it’ll also work for a dodgey campground. It sounds like turning it on will allow AC shore or generator power to flow through the MP on charge only mode and into my trailer’s breaker box even if it sags. In other words, there’ll be no need to change any parameters as the weakAC will allow voltages outside of the factory parameters to flow without cutting the MP and, therefore, the power. I think?
Will the weakAC override the 94-143 volts and allow voltage lower than that to flow into my AC breaker?
I installed and set it up. I changed the battery charging settings per battleborn’s instructions. Everything else is factory.
Thank you for your help
AC2 output would also be a great option for the HVAC.
@mrkjamesbb 3 idea's:
- Did you try to connect you airco at the AC2OUT?
- Keep the Multi on, so for the peak is can 'assist' (and maybe programm an alarm via Asistanst for when the shore power realy is lost)
- You could allso programm assistants for switching on a certain load.
Harold
I’m curious if you found a solution to this issue. I have virtually the same setup and experienced this but at one campground. Unfortunately it’s one of our favorites. I’ve notice it more at night, my theory is because with cooler temperatures at night the ACks in other rigs cycle more frequently causing sags or spikes. My input voltage is good and I’ve maxed out all the settings to try and find a solution. Are you struggling g with this still?
I would recommend @harold suggestion, put the AC or any heavy load on the AC2 output.
It will turn off automatically if you lose the grid connection but will keep the inverter running and power assist could help with any voltage sag cause from your own AC as it can carry some of the load for a few seconds.
MultiPlus Product page / Quattro Product page
MultiPlus 230V Manual / Quattro 230V Manual
MultiPlus 230V Datasheet / Quattro 230V Datasheet
VE.Bus Error codes / VE.Bus configuration guide
Additional resources still need to be added for this topic
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