Hey everyone, I ran into a Maytag french-door refrigerator today with model no: MFF2258DEH00. The compressor would not shut off during the defrost cycle so the evaporator completely frosted over and stopped getting cold. I needed to replace the electronic control Jazz board. I looked it up by model no. and it calls for a WPW10637328 board that I did not stock in my truck. I do carry the WPW10503278 board and we compared them and they both look exactly the same. (I never knew there was more than 1 Jazz board). No one had the board in stock so I installed my board and ran the refrigerator thru all the tests. (everything seems to be working just fine). Does anyone know if there is a difference between the two different boards. Are they interchangeable? Should I order the 328 board and change it whenever it comes in from B.O.? Or should I just wait and see what happens? I told the customer to watch it and call me if something isn't right. What do you think? Please let me know, Thanks!!!