My three-phase setup, i.e. three MultiPlus II 5000, does not have any connections at Output 1 or Output 2. Still, around 30W is what one of the three units consumes, 24/7. When the sun is not shining, and during most of winter time, I feel confident that all the load can be provided by a single MP. 2*60 W *12 hours would be 1200Wh per day that could be saved. Is there a way for me to have Phase 2 and Phase 3 auto-switched off when there is no load/no significant sun shining?