you need to remove your prices....
But your situation definately raises a red flag....
I would call the contractor in the morning and speak with the manager. Explain that you are unsatisfied with the service and would like a partial refund. You may not get it all back but you may get some.
And get a new contractor. Personally, I have no problems leaving failed parts with HOs that want them (provided its not a coil or compressor).....but a contactor or board....sure you take it. Less trash in my truck.
The fact that he didn't want to give it to you is a little off. You may in fact be holding a new board.....If you want, you may be able to contact Carrier or the supplier and read them the model off the board. It may lead to some interesting information.
I'm sure others will be along with thier two cents. But thats mine for now. I will probably chime in later with others.
I fully support the military and the War on Terrorism.
If you don't know, then don't do. If you don't know and still do, then be prepared to pay someone else a lot to undo what you did and then do it right.
If you do know, then do. But do it right. Otherwise, you may not be doing it long.