Press the "Start/Pause & Skip/Reset" buttons simultaneously, switch the machine on. The machine should beep, and start cycling through each LED. DO NOT leave the machine when it's filling, the "Service Cycle" is a manual cycle! This cycle DOES NOT eliminate the cleaning of the filter! DO NOT use the "Service Cycle" for spinning heavy loads; it’ll wreck the machine! The "Service Cycle" is for testing new parts or cleaning the machine out!