The Contactor provides voltage to the outside condenser which houses the fan, reversing valve, and compressor... earlier we connected the reversing valve so our focus now is the outdoor fan and compressor. There are 2 contacts that act as switching legs that pass power to each device. The contactor is controlled 24 volts from the thermostat.
Connect the Heat Sequencer
Connect the Reversing valve
Connect the Fan Relay
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NATE stands for North American Technician Excellence and it's the nation's largest non-profit certification organization for heating, ventilation, air conditioning and refrigeration technicians. NATE is owned, operated, developed and supported by the entire HVAC/R industry and participation is strictly voluntary.
