5. A cleaning cycle begins as soon as time is added to the digital timer screen, which is located on the left side of the control panel. It displays the number of minutes and seconds remaining in that cleaning cycle. The Up/Down buttons increase or decrease the timer in 5-minute increments; the maximum amount of cleaning time is 30 minutes. The red light at far left indicates if a cleaning cycle is in process. Never start the process without cleaning solution in the tank.