Duke Energy H?M Energy Manager Homeowner's Manual page 25

Troubleshooting (continued)
No Cool
Possible Cause
System switch not set to COOL.
Outdoor unit disconnect or breaker tripped.
Cooling system requires service or thermostat requires
replacement.
Multi-stage Air Conditioner or Heat Pump:
Second, Third, or Fourth Stage Won't Come On
Possible Cause
Your thermostat is designed to determine the optimum
time to activate the second stage. Simply raising the
temperature in heating or lowering it in cooling will not
always force the thermostat to bring the second stage on
quickly. There is a time delay of 0 to 30 minutes depending
on the performance of the first stage of the system.
HōM™ Energy Manager Web-Programmable Thermostat Homeowner's Manual
HōM Energy Manager Portal
homenergymgr.com/portal/engagement
Corrective Action
Press SYSTEM button to select COOL and press
lower the temperature setpoint below room temperature.
Verify the outdoor unit disconnect or breaker has not been
tripped.
To diagnose this condition:
Press SYSTEM button to select COOL and press
lower the temperature setpoint below 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 your installing contractor for a
replacement thermostat. If the thermostat clicks, contact
the furnace manufacturer or HVAC contractor for a service
visit to verify the cooling is operating correctly.
Corrective Action
Wait for the second, third, or fourth stage to come on.
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