Honeywell CT3650 Thermostat User Manual


 
69-1285210
When the batteries are runnin
g
low, a REPL BAT messa
g
e flashes for one to
two months before the batteries run out completel
y
. Replace the batteries as
soon as possible once the messa
g
e flashes.
IMPORTANT
Although the thermostat has a low battery indicator, replace the
batteries once per year to prevent leakage and to prevent the ther-
mostat and heating/cooling system from shutting down due to lack
of battery power in the thermostat.
If
y
ou insert new batteries within 20 to 30 seconds of removin
g
the old
batteries, the s
y
stem retains the current time and da
y
. If the displa
y
is blank,
the batteries are dead or installed incorrectl
y
. You must reset the time and
da
y
. Refer to Set the Clock for instructions.
As a precaution when leavin
g
home for lon
g
er than a month, chan
g
e batteries before leavin
g
to prevent
the s
y
stem from shuttin
g
down due to lack of power. Alwa
y
s use fresh alkaline batteries. Nonalkaline
batteries do not last as lon
g
. The
y
also can leak, causin
g
dama
g
e to the thermostat and the wall surface.
Hone
y
well recommends Ener
g
izer® batteries.
STEP 6. MOUNT THE THERMOSTAT
M16424
80
90
70
60
90
80
70
60
A.
ENGAGE TABS AT TOP
OF THERMOSTAT
AND WALLPLATE.
M12703
B.
PRESS LOWER
EDGE OF CASE
TO LATCH.