Installation and User Guide
Troubleshooting
Reset Operation
Note: If a voltage spike or static discharge blanks out the display or causes erratic thermostat operation, you can reset the thermostat by
removing the thermostat from the wall plate and removing batteries for 2 minutes. After two minutes, replace the batteries and replace
thermostat on wall plate. If the thermostat has been reset and still does not function correctly contact your heating/cooling service person
or place of purchase.
Symptom
Possible Cause
Corrective Action
No Heat/No Cool/No Fan
(common problems)
1. Blown fuse or tripped circuit breaker.
2. Furnace power switch to OFF.
3. Furnace blower compartment door or panel
loose or not properly installed.
4. Loose connection to thermostat or system.
Replace fuse or reset breaker.
Turn switch to ON.
Replace door panel in proper position to engage safety interlock or door switch.
Tighten connections.
No Heat
1. Pilot light not lit.
2. Furnace Lock-Out Condition. Heat may also
be intermittent.
3. Heating system requires service or thermostat
requires replacement.
Re-light pilot.
Many furnaces have safety devices that shut down when a lock-out condition
occurs. If the heat works intermittently contact the furnace manufacturer or local
HVAC service person for assistance.
Diagnostic: Set SYSTEM Switch to HEAT and raise the setpoint above room
temperature. Within a few seconds the thermostat should make a soft click
sound. This sound usually indicates the thermostat is operating properly. If the
thermostat does not click, try the reset operation listed above. If the thermostat
does not click after being reset contact your heating and cooling service person
or place of purchase for a replacement. If the thermostat clicks, contact the
furnace manufacturer or a HVAC service person to verify the heating is operating
correctly.
No Cool
1. Cooling system requires service or thermostat
requires replacement.
Same as diagnostic for No Heat condition except set the thermostat to COOL
and lower the setpoint below the room temperature. There may be up to a five
minute delay before the thermostat clicks in Cooling.
Heat, Cool or Fan
Runs Constantly
1. Possible short in wiring.
2. Possible short in thermostat.
3. Possible short in heat/cool/fan system.
4. FAN Switch set to Fan ON.
Check each wire connection to verify they are not shorted or touching together.
No bare wire should stick out from under terminal block. Try resetting the
thermostat as described above. If the condition persists 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.
Thermostat Setting &
Thermostat Thermometer
Disagree
1. Thermostat thermometer setting requires
adjustment.
The thermometer can be ad/- 4 degrees. See Temperature Display
Adjustment in the Configuration Menu section.
Furnace (Air Conditioner)
Cycles Too Fast or Too
Slow (narrow or wide
temperature swing)
1. The location of the thermostat and/or the size
of the Heating System may be influencing the
cycle rate.
Digital thermostats provide precise control and cycle faster than older mechanical
models. The system turns on and off more frequently but runs for a shorter time
so there is no increase in energy use. If you would like an increased cycle time,
choose SL for slow cycle in the Configuration menu, step 7 (heat) or 8 (cool). If
an acceptable cycle rate is not achieved, contact a local HVAC service person for
additional suggestions.
Forgot Keypad
Lockout Code
Press the menu key (key will disappear) and hold in for 20 seconds. This unlocks
the thermostat.
Blank display any or
keypad not responding
1. Voltage Spike or static discharge
Use the Reset Operation shown above.
Thermostat does not
have Menu Screen
Numbers
1. Earlier version of thermostat
To access the earlier version instruction sheet (37-6914E) go to
www.white-rodgers.com, enter 1F95-1291 in Model Number Search
About American Standard Heating and Air Conditioning
American Standard has been creating comfortable and affordable living environments for more than a century. For more
information, please visit www.americanstandardair.com.
The manufacturer has a policy of continuous data improvement and it reserves the right to change design and specifications without notice. We are
committed to using environmentally conscious print practices.
© 2020 American Standard Heating and Air Conditioning
11-HD17D1-1C-EN (09 Sept 2020)
Supersedes 11-HD17D1-1B-EN (08 Apr 2019)
