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The heat pump operates in the heating cycle by redirecting
heating to cooling or vice versa, the piston in the reversing
temperature and the outdoor coil temperature, the greater
provide supplementary heat for all heat pump installations
heat to handle the entire heating requirement should
there be a component failure of the heat pump, such as a
freezing point, frost forms on the surfaces of the outdoor
time, the outdoor fan stops to hasten the temperature
rise of the outdoor coil and lessen the time required for
and 90 minutes may be selected by setting the circuit