Abstract: A cut-out circuit for an air conditioner protects the air conditioning system components when subjected to low pressure conditions, without manually resetting the system after low pressure cut-out. The cut-out circuit preferably includes a relay, connectable to a voltage source through a normally closed low pressure switch to a compressor clutch, the relay operable in a closed state to output a voltage from the voltage source through the low pressure switch to the clutch, and in an open state to interrupt the voltage. The low pressure switch may open responsive to a low pressure condition interrupting voltage flow to the clutch. The circuit includes a normally open high pressure switch, connected to the relay and a voltage source, operable to close responsive to a high pressure condition, to output a voltage from a voltage source to the relay for changing the relay operating state to open.

Abstract: A cut-out circuit for an air conditioner, which protects the air conditioning system components when subjected to low pressure conditions, without requiring manually resetting the system after low pressure cut-out, but which requires resetting after high pressure cut-out. The cut-out circuit includes a device, preferably a relay, connectable to a voltage source and through a normally closed low pressure switch to a compressor clutch, the relay being operable in a closed state to output a voltage from the voltage source through the low pressure switch to the clutch, and in an open state to cease outputting or interrupting the voltage. The low pressure switch is operable to open responsive to a low pressure condition, to interrupt voltage flow to the clutch.