Duke Energy EnergyWise Business User Manual page 24

Troubleshooting (continued)
No Heat
Possible Cause
Pilot light not lit.
System switch not set to HEAT.
Furnace lock-out condition. Heat may also be intermittent.
Heating system requires service or thermostat requires
replacement.
Furnace or Air Conditioner Cycles Too Fast or Too Slow (Narrow or Wide Temperature Swing)
Possible Cause
The location of the thermostat and/or the size of the
heating system may be influencing the cycle rate.
EnergyWise Business Wi-Fi Thermostat User's Manual
®
EnergyWise Business Portal
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duke-energy.com/EWBportal
Corrective Action
If it will not stay lit, call for service from your HVAC
contractor.
Press the thermostat's SYSTEM button one or more times
to select HEAT and press
setpoint above room temperature.
Many furnaces have safety devices that shut down when a
lock-out condition occurs. If the heat works intermittently,
contact the furnace manufacturer or your HVAC contractor
for assistance.
To diagnose this condition:
Press SYSTEM button to select HEAT and press
raise the temperature 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 after
being reset, contact EnergyWise Business for a replacement
thermostat. If the thermostat does click, contact the
furnace manufacturer or your HVAC contractor for a service
visit to verify the heating is operating correctly.
Corrective Action
Electronic thermostats, like this one, 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 to maintain the
desired temperature, but runs for a shorter time so there is
no increase in overall energy use.
to raise the temperature
to
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