Immediate fallback to 1-phase when switching from "Now" to "PV" mode or to "Min+PV" mode

[antonpulmon]

I noticed the following behavior with automatic phase switching:
If the charger is currently in Now mode using 3 phases, and I manually switch back to PV mode, or to Min+PV Mode, EVCC always starts the 3-minute "scale to 1 phase" timer before switching to 1 phase.

In my opinion this delay is unnecessary if it is already obvious that the available PV power is well below the minimum required for 3-phase PV charging (approximately 4.1 kW at 3 × 6 A).

For example:
Charging in Now mode: 3 phases, ~11 kW
Available PV power during Now Mode ~3.2 kW
Manually switch to PV mode

At this point, evcc already knows that 3-phase PV charging cannot be sustained. Nevertheless, it waits another 3 minutes before switching back to 1 phase, resulting in several minutes of unnecessary grid import.

Suggestion: When switching directly from Now to PV mode, evcc could immediately evaluate whether 3-phase PV charging is possible. If the available PV power is already below the minimum 3-phase threshold, it could switch directly to 1 phase instead of starting the normal 3-minute hysteresis timer.
This would reduce unnecessary grid consumption while still keeping the existing hysteresis for normal PV operation.

[kjs-DE]

If you look at it from a financial point of view it most likely won't ruin you. 3min with 4,1kW instead of 1.4kW will cost you 135Wh if everything is drawn from the grid.
Yes, from an optical point of view it would look better with your suggestion but in real life I would consider it to be peanuts.

[antonpulmon]

It's not about runining anybody. It's about a behaviour during loading, that just isn't necessary.