What causes an OWS zone fault affecting all zones on my Ampac EV3000 Control Panel?
- RRobert ScottSep 9, 2025
An OWS Zone Fault affecting all zones on your Ampac Control Panel, specifically related to the amplifier/speaker, can stem from several causes. Ensure the Mic Mixer 302 4840 is plugged in; if not, plug it back in. If the test signal generator on the 302 4840 is faulty, replace it. Lastly, check the amplifier bus cable for disconnections or faults and reconnect or replace it as necessary.







