Step 3 Before You Program; Install The Batteries - Honeywell CT3400 Programming And Installation Instructions

STEP 3 Before You Program

Install the Batteries

IMPORTANT: Three AA alkaline batteries are
included with the thermostat. Batteries must
be installed for programming and operation of
the thermostat and heating/cooling system.
■
Install the batteries in back of the thermostat
as shown, making sure positive (+) terminals all
face toward the right.
As the batteries are running low, a REPL BAT
indicator will flash for 1 to 2 months before bat-
teries run out completely. Replace the batteries
as soon as possible after the indicator starts
flashing.
If you insert new batteries within 20 to 30 sec-
onds of removing the old ones, you will not have
to reprogram the thermostat. However, if the
display is blank, the batteries are dead or
incorrectly installed. In this case, you will
have to reprogram. See pages 13 through 15
to reprogram. If you do not reprogram, the
factory-prepro-
grammed
settings will be
in effect, as
shown in
chart on
pages 11
and 12.
6
BACK OF THERMOSTAT
INSTALL 3 AA ALKALINE
BATTERIES AS SHOWN,
POSITIVE (+) TERMINALS
TOWARD RIGHT.
M8388
69-0733B—1