17
Troubleshooting
MORN DAY EVE NITE
HEAT HEAT HEAT HEAT
COOL COOL COOL COOL
SATURDAY
6
MORN DAY EVE NITE
HEAT HEAT HEAT HEAT
COOL COOL COOL COOL
SUNDAY
7
Symptom Remedy
No display Check batteries; display is blank when batteries are not present or are dead
System fan does not come on
properly
Verify wiring is correct, check Gas/Electric switch position
Program schedule activates at the
wrong time
Check time (AM/PM) set on thermostat (see “Setting the Time,” Page 12)
Thermostat turns on and off too
frequently
Adjust temperature differential (see “Setting the Temperature Differential,”
Page 8)
Thermostat does not follow program Verify it is operating in Program mode; check time (AM/PM); check if in Hold
mode
“PROGram” flashes (in Hold mode) Press Hold button to remove from Hold mode
Fan runs continuously Check Fan Auto/On switch
Low battery indicator Batteries need to be replaced
Problem not listed above Press reset button once*
* Reset Button Function:
Time, day and program/non-program changed to last saved settings (saved after
program or configuration change), configuration and program unchanged, ASC
timer reset to 0.
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