Page 8.1
SECTION 8
TroubleShootingTroubleShooting
8
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: Consult the Owner's Manual in the Setup
section to defeat the cycles per hour and
compressor timeguard.
SYMPTOM: The display is blank.
CAUSE: Lack of proper power.
REMEDY: Make sure power is turned on to the furnace
and that you have 24vac between R & W. If C is
used, 24vac between R & C.
SYMPTOM: The air conditioning does not attempt to
turn on.
CAUSE: The cooling setpoint is set too high.
REMEDY: Consult the Owner's Manual in the Setup
section to lower the cooling setpoint limit.
SYMPTOM: The heating does not attempt to turn on.
CAUSE: The heating setpoint is set too low.
REMEDY: Consult the Owner's Manual in the Setup
section to raise the heating setpoint limit.
NOTE: Due to the Random Start feature, outputs may not energize for up to 30
seconds when the thermostat is first powered (see page 16.4 of the
Owner’s Manual)
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