You are still receiving your original refund amount.
The tax calculator on Turbo Tax resets to zero when you start the amended return process.
The amount on your 1040-X is either additional refund (Line 22), as in your case, or an amount due that has to be paid back to the IRS (Line 20).
Your total refund would be your original refund amount plus the amount you will receive from your amended return.
Since the 1095-A was not reported on your original e-file, you would end up amending your return - or corresponding with the IRS. At least now, you have it all taken care of!