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69-1631—1 22
FREQUENTLY ASKED QUESTIONS
b. Press and simultaneously.
A blank program schedule is displayed and the program
is canceled (Fig. 31).
Fig. 31.
Change a program permanently
Follow steps for programming heating schedule or programming
cooling schedule.
If... Then...
Display does not come on • Make sure the batteries are fresh and installed correctly.
• Set System switch to Off. Remove batteries and insert backward for five to
ten seconds to reset thermostat. Replace batteries correctly; display should
come on.
Temperature display does not go
lower than 45°F (7°C) or higher than
88°F (31°C) during programming.
• Temperature limit setting is reached; range is 45°F to 88°F (7°C to 31°C).
Display shows flashing “bAt Lo.” • The batteries are low; replace them as soon as possible.
• If “bAt Lo” continues to display after replacing batteries, set System switch
to Off and insert batteries backward for five to ten seconds. Replace
batteries correctly; display should come on.
Temperature change occurs at wrong
times
• Check program times for period in question. Be sure AM and PM
indications are correct. Make sure current day and time are correct.
Reprogram if necessary.