Honeywell MAGICSTAT 3355 - Manual (Page 9)

9 69-1012
indicator eventually stops flashing. bAt Lo
stays on without flashing, indicating the
thermostat and heating/cooling system
have stopped working when the batteries
are almost completely dead.
After the batteries are completely dead, the
bAt Lo indicator disappears, leaving a com-
pletely blank display.
Press down on the left ends of the batteries to
remove. If you insert the new batteries within
20 to 30 seconds of removing the old ones,
you do not have to reprogram the thermostat.
However, if the display is blank, the batteries
are dead or incorrectly installed and you must
reprogram. See pages 14 and 15 to reprogram.
IMPORTANT
Although the thermostat has a low
battery indicator, replace the batteries
once a year to prevent the thermostat
and heating/cooling system from
shutting down due to lack of
battery power.
As a precaution, when leaving home for longer
than a month, change batteries before you
leave to prevent the system from shutting down
due to lack of battery power.
INSTALL TWO AA ALKALINE
BATTERIES AS SHOWN
M1713