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light and audio prompting, which work only
on 24 VAC power. If the word BAT is dis-
played continuously (non-flashing), the ther-
mostat is not being supplied with 24 VAC
power and is being powered by the battery
alone.
Use
SYSTEM
SWITCH
to turn thermostat OFF be-
fore removing thermostat from the wall
to replace the battery.
2. You may adjust option switch #4 for auto-
matic changeover from heating to cooling
(see OPERATING FEATURES).
CAUTION
!