18
69-1623
REPLACING THE
THERMOSTAT BATTERIES
IMPORTANT
Batteries must be installed to
maintain the time and date in the
event of a power loss. Although the
thermostat has a low battery
indicator, replace the batteries once
every two years to prevent the
thermostat from losing its time/date
information in the event of a momen-
tary power loss.
As the batteries run low, the display shows bAt
Lo. This low battery indication flashes for one
to two months before the batteries run out
completely. Replace the batteries as soon as
possible after the indicator starts flashing.
You will need two AA alkaline batteries; non-
alkaline batteries will not last as long, and can
leak, causing damage to the thermostat or the
wall surface.
• Use a coin to carefully remove the battery
door.
• Press down on the left ends of the batteries
to remove them.
• Install the fresh batteries as shown in Fig. 3.
Make sure positive and negative terminals
are oriented correctly.
• Replace the battery door.
