Dan Keating posted a discussion

I have recently installed a ev-200 hydraulic pack on a Brand New Boston Whaler 285 Conquest.  This boat has twin 225 Verado's and is about 29 feet long.  The system also included:*  1 x E165 MFD*  Engine Gateway (Mercury/Raymarine)*  Open Array Radar and VCM 100*  Chirp 450 C*  RS130 External GPS*  VHF *  APU 200*  EV 1 Compass*  Type 1 Hydraulic Pump*  P70R Head UnitWe have done 3 setups like this since the Evolution Autopilots came out. Everyone we have done seems to have a similar drama.  Whenever the auto pilot is engaged it will work for anywhere from 1 second to thirty seconds before displaying a "No Pilot" alarm.  They are all talking to one another and I have checked they're all there in External Devices (On MFD) and they are.  I have updated the MFD with the latest software,.... no difference.  I have tried different calibrations at the start as well as very fine tuning my hard over time, my dock side calibration and aligning the compass by driving in a straight line at about 10 Knots.  But as soon as I  engage the auto pilot within seconds it comes up with "No Pilot" and "Drive Stopped" alarms on both the E165 and the P70R.  I noticed that my maximum devation is 188 degrees for some reason.  In previous AP systems I know that your max deviation should be less than 10deg if at all. My EV 1 is connected via sting cable to 5 way sting bus and my course computer is plugged into the same 5 way bus.  The P70R is connected to another 5 way bus linked into the same back bone as the previous, obviously.  I have then daisy chained a sting cable from the P70R to the E165.  Does anyone have any ideas??????   See More