I have a Multiplus 2 12v 3000; on it there is a connector for a remote switch - which I hooked up for ease of turning on and off the Multiplus when I'm working with the cabling of my setup.
Normally, for my purposes, the Multiplus is set to Inverter only mode, however the connection to the grid plugged in so that I can switch it over to inverter and charger mode via Venus if needed.
However, today when I turned the Multiplus off and then later on again using the remote switch the Multiplus turned on in with both the charger and the inverter on.
Looking at my VMR numbers I can confirm the Multiplus was in inverter mode only prior to being turned it off via the remote switch, and charger and inverter mode after being turned on via the remote switch. Unfortunately, I didn't notice this right away, but did later after the Multiplus had pulled a couple kilowatts from the grid which I would not otherwise would have needed it to (as the sun was just coming up and the light through the day would have charged the battery just fine).
In my opinion, this behaviour is unexpected at best and a bug at worst. The user manual does not describe the intended behaviour in this scenario, but I believe that when the Multiplus is turned on via the remote switch, it should revert to the same mode it was in when last turned off. Imagine starting your car in the morning and having your windshield wipers, radio, heater, and hazard lights come on each and every time.
Before anyone suggests that the device cannot remember its prior state when turned off and on again, let me point out that this could be resolved by storing the previous state in non-volatile memory.
Hope this message gets through to Victron.