Deductions & credits

Entering/removing the solar cost does not affect my refund.  

 

My Schedule 3 line 5 has the full credit (2,188 = 26 % of solar cost). 

 

Note, Schedule 3 line 6b has a credit for prior year minimum tax.  If I remove the solar cost/credit, line 5 goes to zero, but 6b goes up by the amount of the solar credit.  Schedule 3 line 8 stays the same.

 

Does this help explain what's going on?