EBL512 G3 V. 3.0.X - FIRE ALARM SOLUTIONS OPERATING INSTRUCTIONS67FAULT: No connection with MMI board,control unit xxThis fault message cannot be shown in the control unit's display, only via EBLWin, via Gateway and in other control units in thesystem. Fault in the MMI board software or the MMI board.Check the cable between the boards. This is a very serious fault. Call for service personnel/engineer immediately.FAULT: No reply, AAU xx,(Primary channel) CU xxFAULT: No reply, EPU xx,(Primary channel) CU xxFAULT: No reply, FBP xx,(Primary channel) CU xxFAULT: No reply, GCP xx,(Primary channel) CU xxAlert Annunciation UnitExternal Presentation UnitExternal Fire Brigade PanelGeneral Control Panel• The contact with the unit is interrupted. Check the cable, all connections, etc on the primary channel. Is correct / completeSSD downloaded (via EBLWin)? Check the address and SW mode settings.FAULT: No reply, AAU xx,(Secondary channel) CU xxFAULT: No reply, EPU xx,(Secondary channel) CU xxFAULT: No reply, FBP xx,(Secondary channel) CU xxFAULT: No reply, GCP xx,(Secondary channel) CU xxAlert Annunciation UnitExternal Presentation UnitExternal Fire Brigade PanelGeneral Control Panel• The contact with the unit is interrupted. Check the cable, all connections, etc on the secondary channel. Is correct / completeSSD downloaded (via EBLWin)? Check the address and SW mode settings.FAULT: No reply, expansion board x,control unit xxValid for the 8 zones exp. board 4580, the 8 relays exp. board 4581 and the Inputs and outputs exp. board 4583, mounted in thecontrol unit no. xx.EBL512 G3 cannot communicate with the board. Check / change the address. Check the cables / connections.