Installation guide
4
TO OPERATE YOUR HEAT PUMP 
FOR AUTOMATIC COOLING AND 
HEATING —
1.  Set the thermostat system switch to AUTO 
and the thermostat fan switch to AUTO. (See 
Figure 1)
  Note: Thermostats will vary. Some models 
will not include the AUTO mode, and others 
will have the AUTO in place of the HEAT and 
COOL, and some will include all three.
2.  Set the thermostat temperature to the 
desired heating and cooling temperature 
level(s). The outdoor unit and the indoor 
blower will then cycle on and off in either 
the heating or cooling mode of operation 
as required to automatically maintain the 
indoor temperature within the desired 
limits.
TO SHUT OFF YOUR HEAT PUMP —
Set the thermostat system switch to OFF and 
the thermostat fan switch to AUTO. (See Figure 
1) The system will not operate, regardless of the 
thermostat temperature selector(s) setting.
TO OPERATE THE INDOOR BLOWER 
CONTINUOUSLY —
Set the thermostat fan switch to ON (See Figure 
1). The indoor blower will start immediately, and 
will run continually until the fan switch is reset 
to AUTO.
The continuous indoor blower operation can be 
obtained with the thermostat system switch set 
in any position, including OFF.
The continuous indoor blower operation is 
typically used to circulate the indoor air to 
equalize a temperature unbalance due to a sun 
load, cooking, or fireplace operation.
TO MAINTAIN YOUR HEAT PUMP —
 CAUTION:
Make sure the electrical power to the 
outdoor unit and the furnace/air handler 
is disconnected before doing the 
following recommended maintenance.
1. Regularly:
a.  Clean or replace the indoor air filter at the 
start of each heating and cooling season, 
and when an accumulation of dust and dirt 
is visible on the air filter. Inspect the filter 
monthly.
b.  Remove any leaves and grass clippings from 
the coil in the outdoor unit, being careful 
not to damage the aluminum fins. 
c.  Check for any obstruction such as twigs, 
sticks, etc.
 CAUTION:
Do not over-oil, or oil motors not 
factory-equipped with oil tubes. The 
compressor is hermetically “sealed” 
and does not require lubrication.
2.  Before Calling a Service Technician, Be 
Certain:
a.  The unit thermostat is properly set — see 
“To Operate Your Heat Pump for Cooling” 
and “To Operate Your Heat Pump for 
Heating.”
b.  The unit disconnect fuses are in good 
condition, and the electrical power to the 
unit is turned on.
Read Your Warranty
Please read the separate warranty document 
completely. It contains valuable information 
about your system.
GENERAL INFORMATION
Read the following instructions completely before 
performing the installation.
 CAUTION:
This unit uses refrigerant R-410A. DO 
NOT under any circumstances use 
any other refrigerant besides R-410A 
in this unit. Use of another refrigerant 
will damage this unit.
Outdoor Unit Section — Each outdoor unit 
is shipped with a refrigerant charge adequate 
to operate the outdoor section with an indoor 
matching coil or air handler. Units with braze 
connections include the proper amount of 










