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Can’t Read Voltages That Low, Limited
to Bottom of Range—the battery-alarm
screen voltage value is lower than the
voltage at which the Fishnder 300C
automatically turns off.
Deep-Water Alarm
—the deep-water alarm
depth (Congure > Alarms > Deep Water
> On) has been reached.
Drift Alarm
—the depth has changed by the
amount on the drift-alarm screen (Congure
> Alarms > Drift > On).
Entering (Leaving) Target Water
Temperature—the target water temperature
is 2°F (1.1°C) above or below the water
temperature alarm (Congure > Alarms >
Water Temp > On). These messages appear
when you enter or leave that zone.
Fish Alarm
—an icon appears (page 12)
and a beep sounds (if enabled) when a sh
is detected. This alarm does not show a
message banner.
Shallow-Water Alarm—the shallow-water
alarm depth (Congure > Alarms >
Shallow Water > On) has been reached.
Simulating Operation—the Fishnder
300C is in simulator mode.
Sonar Disabled Due to High Voltage.
Please Check Unit Voltage—the Fishnder
300C voltage is greater than 20 volts. Check
the battery voltage (Congure > Numbers).
Turn the Fishnder 300C off and back on
again to restore the sonar.
Sonar Failed, Unit Needs Repair—there
is an internal problem with the Fishnder
300C. Contact your dealer or Garmin
Product Support to have the Fishnder 300C
serviced.
Transducer Disconnected, Sonar Turned
Off—the transducer or cable are not
attached or need repair. If the transducer
cable is removed while the Fishnder 300C
is on, reconnect and cycle power.
Water Speed Sensor Is Not Working
—the
speed sensor is not detected. Check the
connections.