There are no returns on control/circuit boards. If there is an out-of-the-box problem with the board you receive, you must call us within twenty days of purchase at (888) 444-8123 to obtain an RMA# so you can ship the board back to us and we can start the evaluation process. If you do not wish to wait for this process to resolve, you can purchase a second board which will be credited back to you upon the Manufacturer's determination of a warranty issue. If the problem is not covered under warranty, you are responsible for all charges incurred. Manufacturer's findings are final. You are responsible for shipping the original product back to us: if the manufacturer determines there is a defect covered by warranty, we will reimburse your shipping fees (FEDEX/UPS Ground only). Effective 3/1/2013.