Dometic toilet won't flush
07 Beaver Marquis. Dometic model SF3110 302311013 just started not flushing. Even when I switch the lever to service mode the ball doesn't open. The 102 bar on the electronic board is blinking once ever second. No clue what that is. Odd it just started. When I cut off power to reset it I sometimes can push the button to add water to the bowl and it will do that. Once in about 20 minutes messing with it the ball did open but not as it should. Any help appreciated.