Installation and Operation Manual -
HRG18xxS1P
Page 22 of 23
508133M01
Issue 2106
Programmable Thermostats
Your system may be controlled by a programmable
thermostat. These thermostats provide the added feature of
programmable time-of-day set points for both heating and
cooling. Refer to the user’s information manual provided
with your particular thermostat for operation details.
Important System Information
• Your system should never be operated without a clean
air filter properly installed.
• Return air and supply air registers should be free from
restrictions or obstructions to allow full flow of air.
IF YOUR SYSTEM DOES NOT WORK, BEFORE
REQUESTING A SERVICE CALL:
1. Ensure thermostat is set below (cooling) or above
(heating) room temperature and that the system lever
is in the “COOL”, “HEAT” or “AUTO” position.
2.
Inspect your return air filter: If it is dirty, your heat pump
may not function properly.
3. Check indoor and outdoor disconnect switches.
Confirm circuit breakers are ON or that fuses have not
blown. Reset breakers/replace fuses as necessary.
4. Inspect the outdoor unit for clogged condenser coils,
(grass cuttings, leaves, dirt, dust or lint). Ensure that
branches, twigs or other debris are not obstructing the
condenser fan.
IF YOUR SYSTEM STILL DOES NOT OPERATE,
CONTACT YOUR SERVICING DEALER.
Be sure to describe the problem, and have the model and
serial numbers of the equipment available.
If warranty replacement parts are required, the warranty
must be processed through a qualified distribution location.
