26Appendix BMessages and AlarmsBattery Alarm — Battery voltage has fallen below the value entered in the Battery Alarm setup.Battery Voltage High— Too much input voltage, unit will shut off. Lower input voltage.Boat is not Moving Fast Enough to Calibrate — Boat is not moving fast enough for the speed wheel toprovide a valid speed.Can’t Send Waypoint — Unit was unable to transmit the waypoint via the NMEA WPL sentence. Checkwiring.Can’t Read Voltages That High Limited To Top Of Range — Voltage value in the Battery Alarm setup ishigher than the unit can read.Can’t Read Voltages That Low Limited To Bottom Of Range — Voltage value in the Battery Alarmsetup is lower than the voltage where the unit automatically turns off.Deep Water Alarm — Deep Water Alarm depth has been reached.Drift Alarm — Depth has changed by the amount of the Drift Alarm value.Fish Alarm — Displays icon and sounds beep (if enabled) when a fish is detected. (This alarm does notdisplay a message banner.)Running Simulator — Unit is in Simulator Mode. This message will reappear after 2 minutes of inactivity.(If the unit does not detect a transducer attached, it will automatically enter Simulator Mode.)Shallow Water Alarm — Shallow Water Alarm depth has been reached.Sonar Failed Unit Needs Repair — Internal problem with unit. Contact your dealer or Garmin ProductSupport to have the unit serviced.Timer Alarm — Timer Alarm value has counted down to 00:00:00.Transducer Disconnected Sonar Turned Off — No transducer attached, bad cable/transducer or trans-ducer cable was disconnected. If the transducer cable is removed while the unit is on, reconnect and cyclepower.Water Speed Sensor is not Working — Speed sensor is not detected. Check Connections.Water Temperature Alarm — Water Temperature Alarm setting has reached value above, below, inside, oroutside of specified value(s).The Fishfinder 320C uses an on-screen pop-upmessage system to alert you to unit operating char-acteristics. Press the ENTER key to acknowledgeand return to the page you were viewing.