TROUBLESHOOTING
Symptom
Heat, Cool or Fan Runs Constantly.
Furnace Cycles Too Fast or Too Slow
(narrow or wide temperature swing)
Cooling Cycles Too Fast or Too Slow
(narrow or wide temperature swing)
Thermostat Setting and Thermometer
Disagree
Clock Loses or Gains Time
Heat or Cool Starts Early
ThermostatDoes Not Follow Program
Blank Display and/or Keypad Not
Responding
Possible Cause
1. FAN Switch set to Fan ON.
2. Possible short in wiring.
3. Possible short in thermostat.
4. Possible short in Heat/Cool/Fan system.
1. The location of the thermostat and/or the size
of the Heating System may be influencing the
cycle rate.
1.The location of the thermostatand/orthe size
of the CoolingSystemmay be influencingthe
cycle rate.
1.Thermostatthermometersetting requires
adjustment.
1. Loss of power to thermostat and low batteries.
1. EMRactivated
1.AMor PMset incorrectlyin program.
2. AM or PM set incorrectlyonthe clock.
3.Voltage spike or staticdischarge.
1. Loss of power and dead batteries.
2. Voltage Spike or Static Discharge.
Corrective Action
Check each wire connection to verify they are
not shorted or touching together. No bare wire
should stick out from under terminal screws.
Try resetting the thermostat. If the condition
_ersists the manufacturer of your system
or service person can instruct you on how
to test the Heat/Cool system for correct
operation. If the system operates correctly,
replace the thermostat.
Item 2 in the Configuration Menu is the adjustment
that controls the cycle rate. If an acceptable cycle
rate is not achieved using the FA (Fast) or SL
(Slow) adjustment contact a local service person
for additional suggestions.
The cycle rate for cooling is fixed and can not be
adjusted. Contact a local service person for
suggestions.
The thermometer can be adjusted +/- 4 degrees as
listed in item 7 of the Configuration Menu. No other
adjustment is possible.
The thermostat will maintain its program in memory
even with no power/no batteries but the clock time
will be incorrect when power is restored. See No
Heat/No Cool/No Fan (common problems) above
for items to check in the system.
See Configuration Menu (Item 4).
Check current clock and program settings including
the AM or PM designations for each time period.
If a voltage spike or static discharge occurs use the
Reset Operation listed above.
Replace batteries and check heat/cool system for
proper operation. Ifa voltage spike or static discharge
occurs use the Reset Operation listed above.
PROGRAMMING HELP LINE: 1-800-284=2925
White-Rodgers is a division
of Emerson Electric Co.
The Emerson logo is a
trademark and service mark
of Emerson Electric Co.
White
Rodgers,o
St. Louis, Missouri Markham, Ontario
www.white-rod gers.com
EMERSON
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