I have been told I need a replacement circuit baord for my dimension one spa (it show flow 1 and won't heat even though it doesn't seem to be blocked). The part number is 51520. I assume it is a balboa board. However, noone seems to list it for sale since it is "proprietary". Is there a replacement model which I can use? I'd even give up some functionality if necessary just to get the basic systems working. Thanks.

The perfect place to locate this board is 877-936-2223, if they can't get it then it doesn't exist.