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display. Also displayed are the currently programmed start time for the 1st heating period
and the currently programmed temperature (flashing).
This display window shows that for the 1st weekday period, the start time is 6:00 AM, and
70° is the programmed temperature (this example reflects factory preprogramming).
3. Press
or
to change the displayed temperature to your selected temperature for the
1
heating program period.
st
4. Press PROGRAM once (the programmed time will flash). Press
time appears. The time will change in 15 minute increments. When your selected time is
displayed, press PROGRAM again to return to the change temperature mode.
5. Press PROGRAM once. The currently programmed start time and setpoint temperature
for the 2nd heating program period will appear.
6. Repeat steps 3 and 4 to select the start time and heating temperature for the 2nd heating
program period.
7. Repeat steps 3 through 5 for the 3rd and 4th heating program periods.
8. Press PROGRAM once. "SA" (indicating Saturday program) will appear in the display,
along with the start time for the 1st heating period and the currently programmed
temperature.
9. Repeat steps 3 through 7 to complete Saturday heating programming.
10. Press PROGRAM once to change to SU (Sunday) heating programming and repeat steps 3
through 7 to complete Sunday programming.
11. When you have completed entering your heating program, press RUN/HOLD.
Enter Cooling Program
1. Move SYSTEM switch to COOL position.
2. Follow Enter Heating Program for entering your cooling program, using your selected
cooling times and temperatures.
I
f the outside temperature is below 50°F, disconnect power to the cooling system before programming.
Energizing the air conditioner compressor during cold weather may cause personal injury or property damage.
Symptom
No Heat/
No Cool/
No Fan
(common problem)
No Heat
(Troubleshooting continued on next page)
TROUBLESHOOTING
Possible Cause
1.) Blown fuse or tripped circuit
breaker
2.) Furnace power switch to OFF
3.) Furnace blower compartment
door panel loose or not
properly installed
4.) Loose connection to
thermostat or system
1.) System Switch not set to
Heat
2.) Loose connection to
thermostat or system
3.) Heating System requires
service or thermostat
requires replacement
CAUTION
!
Corrective Action
1.) Replace fuse or reset breaker
2.) Turn switch to ON
3.) Replace door panel in proper position to engage
safety interlock or door switch
4.) Tighten Connections
Verify thermostat and system wires are securely
attached.
Diagnostic: Set System Switch to Heat and raise
the setpoint above room temperature. Within five
minutes the thermostat should make a soft click
sound and "Heat On" should appear on display.
This sound indicates the thermostat is operating
properly. If the thermostat does not click, try the
reset operation listed below. If the thermostat does
not click after being reset, contact your heating and
cooling service person or place of purchase for a
replacement. If the thermostat clicks, contact the
furnace manufacturer or a service person to verify
the heating system is operating correctly.
or
until your selected
7
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