I have a 01 33ZX with I believe the Ocean a/c control unit, my question is that I sometimes get a HPF message on the digital readout and the a/c doesn't work. Anyone have any input on whats going on, since I don't have an operations manual for the unit. Thanks.

My marine air system had that reading last week and it means that you aren't getting enought water to the pump or the pump failed. Try searching online for a manual for the digital control.