The KP1 pressure switch is compatible with fluorinated refrigerants (HCFC and non-flammable HFC)

meaning it will close the circuit once the pressure drops below the differential setting

you know that keeping older Daikin-McQuay units operational requires precise HVAC replacement parts that match original specifications

this genuine Daikin part offers the exact electrical footprint and mechanical specifications required to restore factory-standard performance and prevent equipment short-cycling

Designed for direct mounting on round shafts up to 3/4 inch or square shafts up to 5/8 inch

Carrier RP-4238 Circuit Board 340793-762 The KP1 pressure switch isCarrier RP 4238 Circuit Board For Humidifier RP 4238 is the direct replacement for 4377