Basic air handler wiring for beginners. Learn wiring and schematic reading necessary for beginners to develop solid diagnostic skills.. CC - Contactor Coil CCH - Crankcase Heater Yellow "ALERT" Flash Code 5 Open Circuit Yellow "ALERT" Flash Code 6 Open Start Circuit LPS - Low Pressure Switch Current only in run circuit LPS - Low Pressure Switch Yellow "ALERT" Flash Code 7 Open Run Circuit HPS - High Pressure Switch Current only in start circuit OFR - Outdoor Fan Relay Yellow.
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The wiring diagram typically includes information about the main components of the air conditioning system, such as the compressor, fan motor, condenser coil, evaporator coil, thermostat, and various switches and relays.. 6. Connect to 24 vac/40va/class 2 circuit. See furnace/air handler installation instructions for control circuit and optional relay/transformer kits. Defrost Board Operation: 1 Closing during defrost.Rating: 1 Amp. Max.