Amended Return

I submitted an amended federal and state tax return due to an error of not including a purchase of a solar system.  I had already received the refund when I first filed, and the amended return resulted in an additional refund as a result of the tax credits.  According to turbotax, the IRS accepted my return about 30 days ago and I have yet to receive the needed refund to apply to my solar loan.  I've typically received previous IRS refunds within a couple weeks of filing.  Is there a way to check/call the IRS for a status on my refund from the amendment?