White Rodgers 1F91-71 manual to turn thermostat OFF be

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.

!CAUTION

Use	SYSTEM	to turn thermostat OFF be-
	SWITCH

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).

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