The manufacturer often updates fireplace control boards, which can lead to changes in part numbers and layouts. Receiving part 1336FUR-3S-8 instead of 1340FUR-P-V02 may reflect such an update, but compatibility is not guaranteed if features or connections differ. Since the new board is not functioning as needed, you are eligible to initiate a return. You can process returns directly through your account on our website, where you can view your order, print shipping labels, and track the return status. If you need further assistance or confirmation about compatibility and return eligibility, please contact our customer service team for expert support.