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TROUBLESHOOTINGTROUBLESHOOTING
TROUBLESHOOTINGTROUBLESHOOTING
TROUBLESHOOTING
SymptomSymptom
SymptomSymptom
Symptom
FurnaceFurnace
FurnaceFurnace
Furnace
(Air Conditioner)(Air Conditioner)
(Air Conditioner)(Air Conditioner)
(Air Conditioner)
Cycles Too FastCycles Too Fast
Cycles Too FastCycles Too Fast
Cycles Too Fast
or Too Slow (narrow oror Too Slow (narrow or
or Too Slow (narrow oror Too Slow (narrow or
or Too Slow (narrow or
wide temperature swing)wide temperature swing)
wide temperature swing)wide temperature swing)
wide temperature swing)
Thermostat Setting &Thermostat Setting &
Thermostat Setting &Thermostat Setting &
Thermostat Setting &
Thermostat ThermometerThermostat Thermometer
Thermostat ThermometerThermostat Thermometer
Thermostat Thermometer
DisagreeDisagree
DisagreeDisagree
Disagree
Blank Display and/orBlank Display and/or
Blank Display and/orBlank Display and/or
Blank Display and/or
Keypad Not RespondingKeypad Not Responding
Keypad Not RespondingKeypad Not Responding
Keypad Not Responding
Heat Setpoint willHeat Setpoint will
Heat Setpoint willHeat Setpoint will
Heat Setpoint will
not Respond to thenot Respond to the
not Respond to thenot Respond to the
not Respond to the
Temperature Up KeyTemperature Up Key
Temperature Up KeyTemperature Up Key
Temperature Up Key
Cool Setpoint willCool Setpoint will
Cool Setpoint willCool Setpoint will
Cool Setpoint will
not Respond to thenot Respond to the
not Respond to thenot Respond to the
not Respond to the
Temperature Down KeyTemperature Down Key
Temperature Down KeyTemperature Down Key
Temperature Down Key
Forgot KeypadForgot Keypad
Forgot KeypadForgot Keypad
Forgot Keypad
Lockout CodeLockout Code
Lockout CodeLockout Code
Lockout Code
Why won't my 2nd orWhy won't my 2nd or
Why won't my 2nd orWhy won't my 2nd or
Why won't my 2nd or
3rd stage come on?3rd stage come on?
3rd stage come on?3rd stage come on?
3rd stage come on?
Possible CausePossible Cause
Possible CausePossible Cause
Possible Cause
1. The location of the thermostat and/or
the size of the Heating System may
be influencing the cycle rate.
1. Thermostat thermometer setting
requires adjustment.
1. Voltage spike or static discharge.
1. The desired setpoint conflicts with the
setpoint of the COOL mode.
1. The desired setpoint conflicts with the
setpoint of the HEAT mode.
Corrective ActionCorrective Action
Corrective ActionCorrective Action
Corrective Action
Digital thermostats normally provide precise
temperature control and may cycle faster than some
older mechanical models. A faster cycle rate means
the unit turns on and off more frequently but runs for
a shorter time so there is no increase in energy use.
If you would like to increase the cycle time, choose
SL SL
SL SL
SL for slow cycle in the menu, step 4. If an accept-
able cycle rate is not achieved as received or by
choosing slow cycle, contact a local service person
for additional suggestions.
The thermometer can be adjusted +/- 3 degrees.
See Temperature Display Adjustment in the
Configuration Menu section.
Use the Reset Operation at top of previous page.
Change system mode to COOL. Raise the Cool
setpoint. Return to HEAT mode and set desired
temperature.
Change system mode to HEAT. Lower the Heat
setpoint. Return to COOL mode and set desired
temperature.
With the thermostat in any mode, press
and
at the same time to enter the configuration menu at
the point where the lockout code is to be entered.
Press
and and SYSTEM button at the same
time to reset the lockout code, unlock the keypad.
Your thermostat is designed to determine the
optimum time to activate the second stage. Simply
raising the temperature in heating or lowering it in
cooling will not always force the thermostat to bring
the second stage on quickly. There is a time delay
from 0-30 minutes depending on the performance of
the first stage of the system.
White-Rodgers is a division
of Emerson Electric Co.
The Emerson logo is a
trademark and service mark
of Emerson Electric Co.
St. Louis, MO
www.white-rodgers.com
HOMEOWNER HELP LINE: 1-800-284-2925