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TROUBLESHOOTING
Check the following before contacting your licensed HVAC installing contractor:
Problem
Cooling, heating, or indoor
fan does not operate.
Insufficient cooling or
heating.
If none of the possible remedies above were able to resolve the problem, then please contact your
licensed HVAC installing contractor for service. You can also search for a licensed HVAC
contractor near you by going to the following site:
Possible Cause
Thermostat not set to cool,
heat, or fan on.
Thermostat temperature
setting.
No power.
Utility company override
control.
Dirty air filter.
Thermostat temperature
setting.
Closed or blocked grilles.
Opened doors or windows.
Rooms exposed to excessive
direct sunlight.
Restricted airflow at outdoor
unit.
www.greecomfort.com/find-a-contractor/
5
Possible Remedy
Verify thermostat mode
settings and adjust
accordingly.
Adjust thermostat
temperature setpoint.
Verify circuit breakers and
service disconnects are in
the on position
If enrolled in an energy
discount plan, contact utility
company for further details.
Clean or replace indoor
return air filter.
Adjust thermostat
temperature setpoint.
Verify all return and supply
grilles in each room are not
closed or blocked.
Keep all doors and windows
closed while operating
system in cooling or heating.
Close window covering to
reduce heat load.
Keep area around outdoor
unit clear and remove any
debris or leaves from unit.