Drag out the loan documents from when you bought the property. Read them. Most likely, there is something in there about this matter.
For example, if you buy a new house under the new first time homebuyer program, and take then $8000 tax credit, then a year later move out and start renting the property, you have to pay back the $8000. If there was some sort of interest rate buy-down based on some government program, there might be similar provisions.
At the very least, the mortgage interest deduction is in a different place on your tax return. Have you made your CPA aware the property is a rental? I would assume you have so all the expenses, rent, and interest get property handled.
DIY taxes and rental property don't go together, IMHO. If you're DIY'ing your taxes, a CPA may well pay for themselves by making sure you get all your deductions.