Danfoss RT51 Installation Instructions Manual - Page 10
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GB
Battery Replacement
o When batteries are low a battery
symbol will flash in the LCD display.
o You have 15 days to replace the
battery before the unit will switch
off.
o When changing batteries, remove
old batteries and insert new
ones within ONE MINUTE and
programming will not be lost.
IMPORTANT: always use high quality alkaline batteries.
!
NB. If the display ever goes blank during normal operation, the
batteries will need to be renewed, the unit reset and the time and
programmes reset.
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