[CA] [CA11] ACU100 is driving wheel motor from seatalk network

[Chuck - Raymarine - Moderator]

Welcome to the Raymarine Forum debonAir,

Please verify that the none of the autopilot control head's keys are being held in the pressed position by the control head's trim ring.

Please note that MFDs are neither designed to be powered by nor to supply power to a SeaTalkng / NMEA 2000 backbone. Similarly the ACU100 and ACU150 are neither designed to supply power to not to be powered by a a SeaTalkng / NMEA 2000 backbone. The backbone should be powered using the supplied SeaTalkng Power Cable. As indicated within the FAQ addressing installation of power circuits for marine electronics it would be considered to be a best installation practice that the SeaTalkng / NMEA 2000 backbone be powered from a dedicated, switched power circuit.

I recommend that you determine which power circuit the SeaTalkng Power Cable (red w/black stripe) has been connected to. You can also verify that it is the sole source of power to the backbone by unplugging it from the spur socket and then determining whether the wheel drive continues to receive power.

Should the problem persist, then you may determine whether the MFD is erroneously supplying power to the backbone by unplugging it from the backbone. Should you find that the problem abates, then it would be recommended that the MFD be sent to Raymarine’s Product Repair Center to be bench checked / serviced. Should you find that the problem does not abate, then the ACU100 should be replaced by your Raymarine dealer (if purchased within the last 30 days) or sent to Raymarine’s Product Repair Center to be bench checked / serviced.