NSi Industries DG280A-24 - Manual (Page 14)

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Now press ENTER briefly and everything in the timer
memory is wiped off including real time, date and
12HOUR will flash .
4 . A “PF” on the display indicates a Power Failure and
the unit requires AC power to operate . The time and
date are protected for 7 days by the super cap . The
program is retained in permanent memory .
5 . A “Lo” on the display indicates that the super cap
has run low and the unit needs to be powered with AC .
A minimum of 8 hours is required to fully charge the
super cap .
6 . All programs and cycles will end at 1200 a .m . on
the start of a skip day .
7 . The CH1 symbol (or CH2 symbol on a two channel)
will flash when in skip day/s . No operations will occur
on channel with flashing symbol .