Troubleshooting - Emerson Delwarva Power Web-Programmable Thermostat Owner's Manual

Troubleshooting

Common Problems: No Heat, No Cool, or No Fan
Possible Cause
Blown fuse or tripped circuit breaker.
Furnace power switch set to OFF.
Furnace blower compartment door or panel is loose or
not properly installed.
No Heat or No Cool
Possible Cause
Thermostat may be in an Energy Wise Rewards
conservation period. "Event in Progress" will be
displayed on top line of home screen.
System switch is set to OFF.
Heat, Cool, or Fan Runs Constantly
Possible Cause
Fan set to ON.
Thermostat Setting and Thermometer Disagree
Possible Cause
Thermostat thermometer setting requires adjustment.
Delmarva Power Web-Programmable Thermostat Homeowner's Manual
Corrective Action
Replace fuse or reset breaker.
Turn switch to ON.
Replace door panel in proper position to engage safety
interlock or door switch.
Corrective Action
Wait for the Energy Wise Rewards conservation period
to end.
Press the thermostat's SYSTEM button one or more
times to select HEAT or COOL (as appropriate).
Corrective Action
Change Fan to AUTO.
Corrective Action
The thermometer can be adjusted + / – 5 degrees.
See Adjust Temperature Display on page 9.
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