Runxin 17603 - Basic Setting & Usage; The Function of PC Board

MODEL F73（17603）
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2. Basic Setting & Usage
2.1. The Function of PC Board
A. Time of day indicator
 Light on，display the time of day.
 Light flash，remind you to reset the time of day if electrical service
interrupted 3 days more (If electrical service interrupted within 3 days,
it doesn’t need to reset the time. )
B. Button lock indicator
 Light on, indicate the buttons are locked. At this moment, press any
single button will not work (Under any status, no operation in one
minute, will light on and lock the buttons.)
 Solution：Press and hold both and for 5 seconds until the
light off.
C. Program mode indicator
 Light on，enter program display mode. Use or to view all
values.