Service is not required. Filters just need to be cleared.
Unplug power or Flip Circuit breaker. Any little debris will cause this sensor to go off. There are 3 Filters in the unit. Core Filter (Dark Gray), Medium Filter (Aluminum) & Fine Filter
Step 1
Remove bottom rack.
Core filter-turn counterclockwise to remove/ rotate clockwise to lock
Remove medium filter.
Step 2
Place hand in center to feel for food debris, Clean fine filter
Fine filter has to cleaned at least every 2 weeks