|Some things to check
before calling for service
Outdoor Unit - Inspect the outdoor unit for clogged condenser coil
(grass cuttings, leaves, dirt, dust, lint or bushes). Ensure that
branches, twigs or other debris are not obstructing the condenser fan.
Air Filter - If it is very dirty it
can restrict airflow and reduce performance
Thermostat setting - Make sure that
the system switch of the thermostat is "on" or switched to the correct
mode ("heat" or "cool") and that the temperature is set low enough for
cooling or high enough for heating.
Energy management system - If the
power company has a load management device, learn from them what the
lights on their control box mean.
Circuit Breaker - If either unit
does not run (most homes have two sections - indoor and outdoor) check the
circuit breaker. Some breakers do not show that they are tripped. Shut it
off all the way and switch it back on again to be sure that it is reset.
Only try this once. If it trips or the system stops soon, you have a
problem that needs service.
What's that cloud of steam coming off my
heat pump? - In heating season or cold weather, outdoor heat pump
sections may accumulate frost during certain operating conditions. Defrost
cycles will run until all frost is melted or for up to ten minutes before
switching back to the heating cycle automatically. The cloud you see
coming off your heat pump is merely water vapor condensing into a mist in
the cold outside air.
No air blowing - If there is no air
blowing at the indoor registers there may be ice on the indoor coil
restricting airflow. At the thermostat set the fan to "on" instead of
"auto" and set the heat/cool/off switch to "off" to allow the ice to melt.
And call for service.