normal, and the unit will periodically defrost itself. During the defrost cycle, the outdoor fan will stop, and the compressor will continue to run and heat the outdoor coil, causing the snow and ice to melt. After the snow and ice have melted, some steam may rise from the outdoor unit as the warm coil causes some melted frost to evaporate.
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:
Be certain 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.
d.Certain models have external panels fabricated from a premium grade of steel designed to inhibit cor- rosion. For such units, if the unit is located in a coastal region or other area subjected to high concentrations of salt, then the unit should be hosed off after storms and monthly otherwise to maintain its new appearance.
CAUTION:
Do not
2.Before Calling a Service Technician, Be Certain:
a.The unit thermostat is properly
b.The unit disconnect fuses are in good condition, and the electrical power to the unit is turned on.
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