3
some steam may rise from the outdoor unit as the warm
coil causes the melting frost to evaporate. When defrost
is completed, the outdoor fan motor will start, and the
compressor will turn off again. In approximately 30
seconds the compressor will start up again and continue
normal operation.
operating the Heat Pump for automatic
Cooling & 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.
operating the Indoor Blower Continuously
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.
Set the thermostat fan mode to ON (Figure 1). The indoor
blower starts immediately, and will run continually until the
fan mode is reset to AUTO.
The 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. See Figure 1.
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:
The T4BD 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
the outdoor coil and fins as necessary using a mild
detergent and water. Rinse thoroughly with water.
• Keep the outdoor unit clear of obstructions. DO NOT
obstruct airflow with tall plants or shrubs. Check for and
remove any obstructions such as twigs, sticks, etc.
• Inspect the condensate drain and outdoor coil at the
beginning of each cooling season. Remove any debris.
• Annually inspect the physical support of the unit to
ensure that it is physically sound without sagging,
cracks, gaps, etc.
