Have a 30RA with the pro-dialog controller. Circ B continuously tripping on HP Fault #33 without even starting. Checked over pressure readings, manual HP switch not tripped 24v all ok. Even tried swapping transducers and hp switch onto circ A. Still circ B HP fault. Tested the two speed condenser fan, all ok. Would this possibly be a board problem? I have the Service Tool V program, will return tomorrow and connect up and check out again. Is there anything specific I should look for? Any info would be greatly appreciated. CHEERS.