COMPONENTS

COMPONENTS
Contactor
This control is activated (closed) by the room T-stat for both
heating and cooling. It is de-energized (open) during
emergency heat. The contactor has a 24 Volt coil and
supplies power to the compressor and outdoor fan motor.
Crank Case Heater
These heaters are factory wired in such a manner that they
are in operation whenever the main power supply to the unit
is "ON". It warms the compressor crankcase, preventing liquid
migration and subsequent compressor damage. It is
connected electrically to the contactor L1 and L2 terminals.