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FAQs 1F97-391
7. Do I have to program a
stop time for each program
period?
8. My display light does not
work. Can it be fixed or
replaced?
9. Between Heating and
Cooling seasons, I want to
turn my system off. Will this
change the program?
10. Do I have to reprogram
my thermostat after I change
the batteries?
There is no need to select a time to stop a programming period. Starting a new program-
ming period will stop the previous program period.
The display light in the
1F97-3911F97-391
1F97-3911F97-391
1F97-391 is not a replaceable item. The display light uses power
from the batteries. If batteries are good, a replacement thermostat would be indicated.
Any time you wish to turn your system off, simply press
SYSY
SYSY
SY
STEMSTEM
STEMSTEM
STEM button until the
display shows
OFFOFF
OFFOFF
OFF. This will not affect your thermostat’s programming in any way. To
turn the system back on, press
SYSY
SYSY
SY
STEMSTEM
STEMSTEM
STEM button until
HEAHEA
HEAHEA
HEA
TT
TT
T,
OFFOFF
OFFOFF
OFF,
COOLCOOL
COOLCOOL
COOL, or
AA
AA
A
UTUT
UTUT
UT
OO
OO
O is
displayed and press RUN. The system will begin operating according to the current
thermostat program.
The
1F97-3911F97-391
1F97-3911F97-391
1F97-391 will retain the last program entered indefinitely without power or batteries.