What do the flashing display lights mean and what should I do when they appear?

Flashing lights indicate different errors depending on which light is flashing. A flashing Sensing light indicates a CleanSensor error — the dishwasher will continue to work but you should call for service. A flashing Rinsing light with a beeping sound indicates a Control Error — press START/RESET to turn off the beeper, then turn off power at the circuit breaker for 10 seconds and restore power; if it continues, call for service. A flashing Washing and Rinsing light with beeping indicates a Control or Sequence Switch Error — press START/RESET to attempt a reset, then restart the wash cycle. (Page 6)