My boat partner is off cruising and I am trying to help remotely. We have a Nexus Classic Server and older GPS Navigator head unit, as well as several newer NX2 units and a MultiXL display. While cruising, an audible alarm started coming from the GPS Navigator head unit. All instruments, NMEA output to computer, AP, etc... kept working fine. It doesn't appear to be a waypoint proximity or anchor alarm. The only potential cause he could come up with is his daughter accidentally turned the battery switch to "OFF" rather than "Both" while running the motor for charging, but it was apparently in that condition for some time. Pressing the two "triangle" keys together does not clear the alarm. The alarm continues even have a power down and back up, but the instruments continue to work fine. The manual hasn't been helpful.
Any ideas? We are planning to deliver the boat back from the San Juan islands to Portland this weekend and would really rather not listen to an alarm, but would like the instruments on.
Thanks - Eric