Welcome to the Raymarine Technical Forum Bernie,
The transducer problem which you have specified has not been previously reported. It is recommended that you verify that the correct transducer has been selected from the transducer list. If so, then it is recommended that the following actions be taken:
It is not uncommon for an engine system to generate alarms as part of their start-up/system test process. The Alarms feature was significantly enhanced in the a/c/e/gS-Series MFD v11.26 software update. Individual or all engine alarms may be switched OFF via this feature (HOME->SET-UP->ALARMS->ENGINE ALARMS). Should your helm feature engine displays, the MFD's alarms would typically be considered redundant and at such stations, you may want to consider switching the engine alarms OFF within the MFD rather than have to respond to engine alarms on both the MFDs and the engine display.
Advanced Marine is indeed listed as a Certified Raymarine Installer. The dealership information follows:
ADVANCED MARINE, INC.
337 HOWARD AVENUE
BILOXI, MS 39530