ginmtb
New Member
I have a call into Tigo and will update when I hear back but thought I’d throw this out to the group also.
Okay here is my scenario - I have an EG4 hybrid mini split (24K). I have dedicated off-grid panels for it (NEM2 limit reached) and the mini split is connected to the grid. Because the panels are roof mounted I had to install rapid shutdown devices. I chose the Tigo TS4-A-O optimizers.
When the power goes out (no battery), my understanding is the Tigo CCA will detect no power and shut every panel down. This is good for emergency personnel, but with PG&E we seem to have plenty of power outages when there is no local emergency. And of course those outages are often at the peak of summer heat when the grid is taxed so the mini split will be shut down too. Hello hot house!
My question is, if I were to disable/isolate the grid power connection to the mini split (I have a disconnect installed) and then provide power to the CCA via a portable power station (10-25VDC input), would the CCA then tell the solar panels all is well and go ahead and produce energy? Then in theory that energy will power the hybrid mini split via the direct DC connection, giving us the much needed cooling.
Tigo CCA connection - I could run a pigtail off the CCA (green unit) with a wago connector and plug in a DC wall block (12V, 1A) powered by a portable power station. Having the wago would allow me to easily switch between the stepped down power from the power supply (white unit) and the temp power:
Does this make sense? Am I going to burn the place down? Do I know just enough to be dangerous? Thanks for your assistance!
Okay here is my scenario - I have an EG4 hybrid mini split (24K). I have dedicated off-grid panels for it (NEM2 limit reached) and the mini split is connected to the grid. Because the panels are roof mounted I had to install rapid shutdown devices. I chose the Tigo TS4-A-O optimizers.
When the power goes out (no battery), my understanding is the Tigo CCA will detect no power and shut every panel down. This is good for emergency personnel, but with PG&E we seem to have plenty of power outages when there is no local emergency. And of course those outages are often at the peak of summer heat when the grid is taxed so the mini split will be shut down too. Hello hot house!
My question is, if I were to disable/isolate the grid power connection to the mini split (I have a disconnect installed) and then provide power to the CCA via a portable power station (10-25VDC input), would the CCA then tell the solar panels all is well and go ahead and produce energy? Then in theory that energy will power the hybrid mini split via the direct DC connection, giving us the much needed cooling.
Tigo CCA connection - I could run a pigtail off the CCA (green unit) with a wago connector and plug in a DC wall block (12V, 1A) powered by a portable power station. Having the wago would allow me to easily switch between the stepped down power from the power supply (white unit) and the temp power:
Does this make sense? Am I going to burn the place down? Do I know just enough to be dangerous? Thanks for your assistance!
Last edited: