Brava does have the same set up on the engine room bulkhead where you have to switch the plug between shore power 110 Volt input and 220 volt input, but forgetting to do that is not the issue in this case. Thanks for asking. Leaving the unit unplugged would indeed be the type of thing I would do...
Hope you have reached the end of your chain by now and all has returned to normal in the chain locker.