600 Circuit Board (6UR 120) replaces 601 - 605 series boards
Sorry, this board is no longer available. Please contact us to replace your complete spa pack and topside key pad. It is best is know what equipment your spa is running, or you may email us pictures. If your current spa heater is not a typical 15" heater tub, then it is best to also email us pictures of your spa pack and heater.
600 Circuit Board (6UR 120) replaces 601 - 605 series boards. Includes a calibrated temperature sensor. If you are replacing a 601 or 602 board, you also need the Diehl Timer Retrofit Kit.