My circuit board went bad 2 years ago. There was condensation and rusting all over the back of the board. Conclusion: the original plastic drain pipe at the bottom was cracked and leaking, hence the condensation on the board. At least that's what they told me. New board, new motor also as it had stopped working. And brass fitting on the drain.
David Horn, TX; 2014 40ft Phaeton QTH; 2014 Mazda CX5; 2013 Can-AM Spyder RT-S on TandemTow trailer; Traveling with Ringo (an English Cocker)