TROUBLESHOOTING
5
Check the following before contacting your licensed HVAC installing contractor:
Problem
Possible Cause
Possible Remedy
Cooling, heating, or indoor
fan does not operate.
Thermostat not set to cool,
heat, or fan on.
Verify thermostat mode
settings and adjust
accordingly.
Thermostat temperature
setting.
Adjust thermostat
temperature setpoint.
No power.
Verify circuit breakers and
service disconnects are in
the on position
Utility company override
control.
If enrolled in an energy
discount plan, contact utility
company for further details.
Insufficient cooling or
heating.
Dirty air filter.
Clean or replace indoor
return air filter.
Thermostat temperature
setting.
Adjust thermostat
temperature setpoint.
Closed or blocked grilles.
Verify all return and supply
grilles in each room are not
closed or blocked.
Opened doors or windows.
Keep all doors and windows
closed while operating
system in cooling or heating.
Rooms exposed to excessive
direct sunlight.
Close window covering to
reduce heat load.
Restricted airflow at outdoor
unit.
Keep area around outdoor
unit clear and remove any
debris or leaves from unit.
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:
www.greecomfort.com/find-a-contractor/
