Simrad AP48 - Autopilot Alarms and Corrective Actions

Alarm/Warning Possible cause Recommended action AP clutch disengaged
Poor connection or open circuit in bypass/clutch coil.
• Check cables and connections • Replace bypass/Clutch if open • Perform new rudder test
AP clutch overload Clutch current exceeds limit.
• Check actual current • Check voltage marking on coil • Check coil resistance (including resistance in connected
wires)
• Check cables and connections
AP depth data missing Missing or invalid depth data.
• Check device list for valid depth source • Try a new automatic source selection • Check cables and connections
AP low boat speed
Boat speed below set limit. Poor rudder response can be experienced at lower speeds.
• Manually control the vessel • Increase vessel speed
AP speed data missing
The speed signal from the GPS or the log is missing.
• Check device list for valid speed source • Try a new automatic source selection • Check cables and connections
List of possible alarms and corrective actions Autopilot alarms