TROUBLESHOOTING

Reset Operation

Note: When thermostat is reset, installer configuration menu settings and programming will reset to factory settings.

If a voltage spike or static discharge blanks out the display or causes erratic thermostat operation, you can reset the thermostat by removing the wires from terminals R and C (do not short them together) and removing batteries for 2 minutes. After resetting the thermostat, replace the wires and batteries. If the thermostat has been reset and still does not function correctly contact your heating/cooling service person or place of purchase.

Note: Be sure to review the installer configuration menu settings.

To reset the programming, clock and configuration settings, press and and the FAN button simultaneously. The thermostat should go blank and then all segments will be displayed momentarily.

Symptom

Possible Cause

Corrective Action

 

 

 

 

No Heat/No Cool/No Fan

1.

Blown fuse or tripped circuit breaker.

Replace fuse or reset breaker.

(common problems)

2.

Furnace power switch to OFF.

Turn switch to ON.

 

3.

Furnace blower compartment door or

Replace door panel in proper position to engage safety

 

 

panel loose or not properly installed.

interlock or door switch.

 

4.

Loose connection to thermostat or system.

Tighten connections.

 

 

 

 

No Heat

1.

Pilot light not lit.

Re-light pilot.

 

2.

Furnace Lock-Out Condition. Heat

Many furnaces have safety devices that shut down when

 

 

may also be intermittent.

a lock-out condition occurs. If the heat works intermittently

 

 

 

contact the furnace manufacturer or local HVAC service

 

 

 

person for assistance.

 

3.

Heating system requires service or

Diagnostic: Set SYSTEM Switch to HEAT and raise the

 

 

thermostat requires replacement.

setpoint above room temperature. Within a few seconds the

 

 

 

thermostat should make a soft click sound. This sound usu-

 

 

 

ally indicates the thermostat is operating properly. If the ther-

 

 

 

mostat 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

Same as diagnostic for No Heat condition except set the

 

 

thermostat requires replacement.

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

1.

Possible short in wiring.

Check each wire connection to verify they are not shorted or

Runs Constantly

2.

Possible short in thermostat.

touching together. No bare wire should stick out from under

 

3.

Possible short in heat/cool/fan system.

terminal block. Try resetting the thermostat as described

 

4.

FAN Switch set to Fan ON.

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 oper-

 

 

 

ates correctly, replace the thermostat.

 

 

 

 

Thermostat Setting &

1.

Thermostat thermometer setting

The thermometer can be adjusted +/- 4 degrees. See

Thermostat Thermometer

 

requires adjustment.

Temperature Display Adjustment in the Configuration Menu

Disagree

 

 

section.

 

 

 

 

Furnace (Air Conditioner)

1.

The location of the thermostat and/or

Digital thermostats provide precise control and cycle faster

Cycles Too Fast or Too Slow

 

the size of the Heating System may

than older mechanical models. The system turns on and off

(narrow or wide

 

be influencing the cycle rate.

more frequently but runs for a shorter time so there is no

temperature swing)

 

 

increase in energy use. If you would like an increased cycle

 

 

 

time, choose SL for slow cycle in the Configuration menu,

 

 

 

step 8 (heat), 9 (cool) or 10 (heat pump). If an acceptable

 

 

 

cycle rate is not achieved, contact a local HVAC service

 

 

 

person for additional suggestions.

 

 

 

 

Thermostat does not have

1.

Earlier version of thermostat.

Refer to Instruction Sheet 37-6749D.

Menu Screen Numbers

 

 

 

 

 

 

 

White-Rodgers is a division of Emerson Electric Co.

The Emerson logo is a trademark and service mark of Emerson Electric Co.

Homeowner Help Line: 1-800-284-2925

www.white-rodgers.com

www.emersonclimate.com

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White Rodgers 37-7248A specifications Troubleshooting, Reset Operation

37-7248A specifications

The White Rodgers 37-7248A is a sophisticated multi-stage digital thermostat known for its reliability and user-friendly features, making it a popular choice among homeowners seeking precise temperature control. This thermostat is designed to work seamlessly with various heating and cooling systems, including central air conditioning and heating units, heat pumps, and gas furnaces.

One of the main features of the 37-7248A is its compatibility with both single-stage and multi-stage heating and cooling systems. This versatility provides homeowners with greater flexibility when selecting their home’s climate control systems. The thermostat supports up to two stages of heating and two stages of cooling, which enables it to efficiently manage the temperature fluctuations that can occur in different conditions.

The digital display of the White Rodgers 37-7248A is another standout characteristic. It features an easy-to-read LCD screen, which allows users to quickly view the current temperature settings and make adjustments as needed. This thermostat also incorporates a set of intuitive buttons designed for straightforward navigation through various settings, ensuring that users can customize their comfort without a steep learning curve.

Energy efficiency is a key focus of the White Rodgers 37-7248A. It includes programmable features that allow homeowners to set specific heating and cooling schedules to align with their routines, thereby reducing energy consumption when the home is unoccupied. The thermostat supports a wide range of programming options, enabling users to create tailored schedules that fit both busy weekdays and relaxed weekends.

Furthermore, the 37-7248A includes advanced technologies such as anticipatory control, which helps to optimize HVAC system operation. This technology enables the thermostat to learn the heating and cooling patterns of the home, adjusting its operation to ensure that the desired temperatures are reached before scheduled changes.

In terms of installation, the White Rodgers 37-7248A is designed to fit most standard wall connections, making it relatively easy for both professional installers and DIY enthusiasts. Its robust construction ensures durability, providing a long-lasting solution for temperature regulation.

In summary, the White Rodgers 37-7248A is a multipurpose digital thermostat that excels in versatility, energy efficiency, and ease of use. Its array of features, including multi-stage compatibility, programmable scheduling, and anticipatory control technology, make it an excellent choice for enhancing home comfort while promoting energy savings. This thermostat is ideal for homeowners who seek a dependable and effective solution for climate control.