Garmin GHP 12 Autopilot System Installation Instructions Manual page 28

Error Message
Drive unit overload
Rudder sensor is not
calibrated.
Rudder near limit. Center
the rudder.
"Rudder near limit" flashes
on the title bar
Rudder miscalibration
detected. Please re-
calibrate the rudder.
Warning! A gybe has been
initiated. Would you like to
continue?
Error: ECU high voltage
Error: ECU high
temperature
ECU drive circuit overload
Error: ECU clutch fault
Error: Lost communication
between ECU and CCU
28
Cause
The average drive unit current value goes above a specified threshold.
• Class A: 8 amps
• Class B: 16 amps
• Other: user specified
The drive unit rudder sensor has not been calibrated.
Calibrate the rudder (page 15).
The rudder remains near its limit (rudder stop) for more than 5 seconds.
The autopilot has driven the rudder near its limit (rudder stop). The autopilot
cannot drive the rudder further in this direction.
The autopilot detects that the rudder sensor may not be calibrated correctly.
Calibrate the rudder (page 15).
The autopilot has detected that the user has attempted to initiate a gybe.
The ECU supply voltage goes above a certain threshold:
• 12v system: 20 volts
• 24v system: 36 volts
The ECU temperature rises above 212°F (100°C).
The average ECU current value rises above 16 A.
The current level in the ECU clutch circuitry is over 3 A.
Communication between the CCU and the ECU has timed out.
autopilot action
• Alarm sounds for 5 seconds
• The drive unit is disabled until the
error is resolved
• Continues in normal operation
• For tips on reducing this load error
message, see page 19
• Alarm sounds for 5 seconds
• Drive unit is disabled
• Autopilot transitions to Standby
• Sounds alarm
• Continues in normal operation
Continues in normal operation
• Alarm sounds for 5 seconds
• Drive unit is disabled
• Autopilot transitions to Standby
• Sounds alarm
• GHC10 prompts for user input.
Selecting Gybe initiates the gybe,
and selecting Cancel cancels the
gybe.
• Alarm sounds for 5 seconds
• Drive unit is disabled
• GHC10 begins a countdown timer
that automatically powers off the
autopilot after 60 seconds
• Alarm sounds for 5 seconds
• Drive unit is disabled
• GHC10 begins a countdown timer
that automatically powers off the
autopilot after 60 seconds
• Alarm sounds for 5 seconds
• Drive unit is disabled
• GHC10 begins a countdown timer
that automatically powers off the
autopilot after 60 seconds
• For tips on reducing this load error
message, see page 19
• Alarm sounds for 5 seconds
• Drive unit is disabled
• GHC10 begins a countdown timer
that automatically powers off the
autopilot after 60 seconds
• Alarm sounds for 5 seconds
• GHC10 begins a countdown timer
that automatically powers off the
autopilot after 60 seconds
GHP 12 Installation Instructions