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Troubleshooting
• SYMPTOM: The air conditioning does not attempt to turn on.
CAUSE: The compressor timer lockout may prevent the air conditioner
from turning on for a period of time.
REMEDY: You might want to change the Compressor Minimum Off
Minutes to 0 in setup step #26.
• SYMPTOM: The display is blank.
CAUSE: Lack of proper power.
REMEDY: Make sure the power is on to the furnace and that you have
24vac between R & C.
• SYMPTOM: The air conditioning does not attempt to turn on.
CAUSE: The cooling setpoint is set too high.
REMEDY: Lower the cooling setpoint or lower the cooling set-point limit.
See Setpoint Limits (page 21).
• SYMPTOM: The heating does not attempt to turn on.
CAUSE: The heating setpoint is set too low.
REMEDY: Raise the heating setpoint or raise the heating set-point limit.
See Setpoint Limits (page 21).
• SYMPTOM: When the Program button is pressed, the display
reads “DISABLED”.
CAUSE: Program mode is set to “NON PROGRAM”.
REMEDY: Set Program Mode (Setup 1) to 7 Day.
See Selecting Your Program Mode (page 17).
