White Rodgers 1F90W-51 Operation Manual page 29

CAUTION
!
If the outside temperature is below 50 F,
DO NOT use the
temperature below the setpoint tempera-
ture. Property damage may result due to
compressor slugging.
9. Why doesn't the temperature change at
the time I programmed?
There may be a number of causes for this
situation. The following are primary rea-
sons.
• The EMR function is operating. The
EMR function will automatically bring on
the system automatically to bring the
temperature to the selected level by the
beginning of the next program period.
button to move the
See OPERATING YOUR THERMO-
STAT.
• You have programmed the incorrect day
or time. Check your programming (be
sure that the times you programmed are
correct AM or PM times). See PRO-
GRAMMING YOUR THERMOSTAT.
• The thermostat is in the HOLD mode.
RUN
Press
PRGM
See OPERATING YOUR THERMO-
STAT.
• The compressor lockout feature is oper-
ating; wait about 5 minutes for system to
begin running. See OPERATING YOUR
THERMOSTAT.
10. Why does the blower fan keep running
after the system has turned off?
• You have programmed the fan to run
to start program operation.
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