White-rodgers 1F97-51 User Manual download pdf (Page 32)

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stop programming at this point, press

RUN

PRGM

to

start the normal program function. See PRO-

GRAMMING YOUR THERMOSTAT.

4. What happens if the electricity goes off

or is manually shut off?

If you have not installed 3 “AA” alkaline

batteries, the display will go blank and the

program will be lost in approximately one

minute. When electricity is restored, the

clock will reset itself to 12:00 PM (noon) and

the thermostat will maintain a heating tem-

perature of 64°F and a cooling temperature

of 82°F until you reenter your program.

Setpoint temperature will not be displayed.

If fresh “AA” Energizer

®

alkaline batteries

are installed, the program will be main-

tained for about one year with no 24 VAC

power present to the thermostat. See OP-

ERATING YOUR THERMOSTAT.

5. Why is the fan running constantly, re-

gardless of system operation?

You have programmed the fan to run con-

tinuously during this program period. To

override the programmed fan, press

FAN

SWITCH

until FAN AUTO is displayed. To change

the programming, see PROGRAMMING

YOUR THERMOSTAT.

6. What can cause the thermostat display

to freeze or go blank?

A completely blank display may indicate

that power has been lost to the thermostat

and the backup batteries are also dead.

However, if there is power to the thermostat

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