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Re: reset service hours beeper S250. Posted: 09/19/2009 03:59 PM. To reset the service clock press the LIGHTS button to turn on the panel. Then press and hold the HIGH FLOW and AUXILIARY PRESSURE RELEASE buttons simultaneously, until reset appears in the display.
HOLD down the MODE button for 3 seconds to start the timer.3. HOLD down the MODE button for 3 seconds to stop the timer. Continue HOLDING downHOUR the MODE DAY button after the timer has stopped and it will reset to 0. NOTE: Resetting the stopwatch screen does not reset the other Activity Tracker data. 1. Enter the Programming Sequence by PRESSING & HOLDING the SET button on the back of the unit for approximately 3 seconds. 2.