Repeated tripping of the 426 PSI high-pressure limit typically indicates a dirty condenser coil

disconnect the leads and test the terminals at room temperature

factory-calibrated unit to ensure tamper-proof operation and consistent safety limits

meeting the identical wattage and base requirements

maintaining the safety circuit's integrity even under varying draft conditions

MARS 43335 Pressure Switch Repeated tripping of the 426The MARS 43335 Pressure Switch is a high performance, fixed setting control engineered for demanding HVACR applications, particularly those utilizing R410A refrigerant. This high pressure cut out switch features a SPST (Single Pole Single Throw) normally closed contact configuration, calibrated to "open on rise" at 600 PSI cut out and automatically reset (cut in) at 475 PSI. Built with a tamper proof, hermetically sealed sensor, the 43335 ensures long