3
Figure 1. Typical Digital Thermostat
Fan
Mode
Temperature
Selector
System
Mode
Operating the Heat Pump for Automatic
Cooling & Heating (Autochangeover)
1. Set the thermostat system switch to AUTO and the
thermostat fan switch to AUTO.
NOTE:
Thermostats will vary. Some models will not
include the AUTO mode, others will have the AUTO in
place of 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.
Operating the Indoor Blower Continuously
Continuous indoor blower operation is typically used to
circulate the indoor air to equalize a temperature imbalance
due to a solar load, cooking, or fireplace operation.
Set the thermostat fan mode to ON (Figure 1). The indoor
blower starts immediately, and will run continuously until
the fan mode is reset to AUTO.
Continuous indoor blower operation can be obtained
with the thermostat system mode set in any position,
including OFF.
Shutting the Heat Pump Off
Change the thermostat’s system mode to OFF and the
fan mode to AUTO.
NOTE:
The system will not operate,
regardless of the temperature selector setting.
TROUBLESHOOTING
Before you call a Technician, check the following:
• Check the thermostat setting. Make sure the system
mode and temperature settings are correct.
• Check the electrical panel for tripped circuit breakers.
• Check the filters for dust accumulation.
• Check the unit and make sure it is clean and not covered
with grass or leaves.
• If the items above don’t resolve your problems, then
call your nearest service technician.
HEAT PUMP MAINTENANCE
WARNING:
This heat pump contains liquid and gaseous
refrigerant under pressure. Installation and
servicing should only be attempted by qualified,
trained personnel thoroughly familiar with the
equipment and safe responsible refrigerant
handling procedures. Failure to comply with
this warning could result in equipment damage,
personal injury, or death.
WARNING:
To prevent electrical shock, personal injury,
or death, disconnect all electrical power to
the unit before performing any maintenance
or service. The unit may have more than one
electrical supply.
Proper maintenance is important to achieve optimum
performance from the heat pump. The ability to properly
perform maintenance on this equipment requires certain
mechanical skills and tools. If you do not possess these
skills, contact your dealer for maintenance. Consult your
local dealer about the availability of maintenance contracts.
Routine maintenance should include the following:
Regular Cleaning
CAUTION:
DO NOT touch any of the internal electrical
components while cleaning the unit.
• The area around the unit and the vicinity of any other
appliances must be kept clear and free of combustible
materials, gasoline, and other flammable vapors and
liquids. Do not store or use flammable items such as
gasoline, paint, varnish, or strippers in the vicinity of
the unit.
• Keep the outdoor unit clean. Hose off periodically and
keep unit fins clear of leaves and grass clippings.
Be
careful not to damage the aluminum fins
. Clean
