Temporary Override - The day and “For” are displayed. The clock shows
hours of override. The display alternates hours of override with setpoint
Automatic Shut-Down
The thermostat will not display the room temperature if the temperature
goes higher than 99°F (37°C) or lower than 32°F (0°C).
The display will show HI or LO. The thermostat continues to control
heating and cooling and will resume the display of real time information
when the room temperature is back inside the display’s range.
Setting the Fan To ON, AUTO or CIRC
The fan has 3 settings: On, Auto, or Circ. Press the button to switch
among the three.
ON: The fan is on constantly. The status of the heating/cooling equipment
has no effect on the fan.
AUTO: Whenever there is a call for heating or cooling the fan will turn on.
CIRC: The fan operates in a cycle of on for 10 minutes and off for 20
minutes. Whenever there is a call for heating or cooling the cycle
stops and the fan responds to the call. The fan circulation resumes
when the call for heating or cooling is satisfied.
Troubleshooting
13
System fan does not operate
properly.
Move fan option switch to either gas
or electric, to match system (see
Switch Locations section).
Check F/C (Fahrenheit/Celsius) setting.
See Changing: Scale or Calibration
section.
Thermostat does not display
proper room temperature.
Thermostat does not turn on system.
Check wiring (see Wiring
Diagrams section).
Increase temperature differential (see
Changing: Scale, Clock Mode,
Differential, Filter Hours, Short Cycle,
or Offset section).
System turns on too often.
Problem Action
Display Shows HI or LO and room tem-
perature is normal.
Call a licensed service person to
replace/repair.
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