I have an intermittent fault on the above 12yr old machine. Near end of cycle machine bleeps continuously and labours. Resetting does not help unless left overnight. Once reset it works fine for 3 weeks or so before fault reoccurs. When it occurs on opening the door the cycle has always moved to rinse. Filters cleaned regularly. Drainpipe is to the open tube type so not back filling/blocking from sink waste.
Peter