I'll have to wait for better weather before I can do a test, but from what I'm gathering here, genboost works as intended, but when the generator starts and it switches from battery to generator, you're getting a 1-2s blackout?  This sounds similar to an issue I think they fixed in the most recent firmware, where if you were using battery eco mode without solar and lost grid, it would cause a 1-2s blackout when switching to battery. 

The Chargeverter is supposed to do a warm up and cool down cycle, so it starts your generator and waits before it draws any current, then before it shuts off the generator it let's it idle for a bit before shutting off.  Does the 12000XP not work like this?

I bought the Chargeverter already, but my wiring would be so much cleaner if I just used the 12000XP's generator input.  I also have all 50A gear for the generator and using the 30A chargeverter with this is going to force me to add a breaker box as well.

I disabled my exercise program on the generator and this helped for the first charge - there was no issue, but last night it was -30 degrees and my inverter called for generator power.  It then sent my inverter back to 50Hz.  I know the cold will reduce starting idle, but the inverter should accommodate with a delayed charging feature or warm up feature (as some of you above have suggested). I'm not sure what the time required for warmup should be, but I'm sure 60 seconds would do it for almost any generator.  This is definitely a software issue.  Alternatively, the inverter should have a setting that can be set to only accept power within the appropriate parameters (59-61 Hz for example).  This seems to be a pretty simple fix.

I'm 100% off grid and if the gen fires up at night and I don't notice it, this lower frequency will fry my furnace fan motor.  Then I'm in a heap of trouble!

If anyone has a workaround, please let me know.  EG4 has not been helpful, even denying it is a problem and blaming my generator.

I have 6000xp with Gen boost enabled and 110v/220v 32A split phase step up transformer connected to Gen ports. Basically it is seen as generator by the Inverter. (I power the Transformer  by 110v inverter connected to my EV so it acts as generator as needed - that's another story)

If your 12kxp behaves like my 6kxp that might suit your needs.

So here what happens:

When I provide power to gen ports the Inverter seamlessly starts using this power and and charge the battery according to the specs in settings. when the load exceeds the pre-set gen power inverter draws necessary power also from batteries.

When I shut the power to gen ports there is seamless transition to to battery power by inverter.

I might assume if I had just simple 220v split phase generator the behavior would be exactly the same - therefore your approach would work

I am not interested in automating the gen start/stop as my 'generator' is not automated. 

I do use gen dry contacts to connect the system to the grid if battery is too low tested and it works, yet the dry contacts change status only when the voltage/SoC passes the pre-set thresholds.

The EG4 inverter logic does not work like I initially expected e.g.:

"IF SoC/Volt < of gen start SoC/Volt THEN  contacts are ON and "IF SoC/Volt > of gen start SoC/Volt THEN  contacts are OFF"

That is is my observation which is supported by inverter behavior.

Since it fits my purpose I can leave with it, Yet if I wanted to automate the Gen start/stop and relevant behavior - that is the Subject issue.

Brgds

K

I'd like to fire up the generator manually, charge for a couple hours, and turn it off manually. Reading above thread, it sounds like there are some possible problems with this? What settings should I double check to enable manual start/stop, and get the batteries topped up this afternoon (is been a very cloudy day today and batteries will not finish on PV today).

This is what I basically do. My generator is connected to the Gen leads on the 12k, and when I need to, I go turn it on and charge. The problem I have that I have not been able to solve (even after support calls) is that the inverter treats the generator as the only power source even while solar and/or battery is still available. So if I need larger appliances to start up on one leg, there's not enough headroom from the generator for the surge, and the inverter won't draw it from the batteries or solar. So it overloads my generator and the whole system momentarily shuts down. We've had to be disciplined about surge awareness when we're running the generator. We should technically have 100A of available power but when the generator is on, it is limited to whatever the generator can provide. 

I'd like to fire up the generator manually, charge for a couple hours, and turn it off manually. Reading above thread, it sounds like there are some possible problems with this? What settings should I double check to enable manual start/stop, and get the batteries topped up this afternoon (is been a very cloudy day today and batteries will not finish on PV today).

I believe I have the GenBoost firmware and the functionality of invertor, battery charge and load management of my Whole Home Generac limited to 8.5kW with the Gridboss has worked phenomenal every time I test it.  The only thing I am seeing power blip when the system switches from invertor to generator. 

I'm assuming the reason for this is that the inverter may not phase matching the generator before switching but I could be wrong.  Seems like it is better sometimes, ranging from a flicker to an all out 500 to 1000ms blackout when the generator relay closes.  For testing, I've tried going to generator in all invertor modes but I would typically be either charging from grid or discharge to grid when a blackout occurs.  If someone finds a setting / firmware that could help with this improve this I would certainly appreciate the input or if EG4 would like me to call in to work on this I would.  I have not given them an opportunity to address this, I was using the forum as a first step to try and learn more about my system.  

Current Relevant Settings: