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The Goodman 0130M00075 Low Pressure Switch is the genuine OEM loss-of-charge and freeze-protection control for the Goodman WGPH4524AMAB packaged heat pump and compatible units. This switch watches suction-line pressure and opens the control circuit if pressure drops too low — signaling a refrigerant leak, undercharge, or a frozen coil before the compressor is damaged by running dry. If your system short-cycles, locks out on a low-pressure fault, or won't start in cold weather, a worn or out-of-calibration switch is a common cause.
The OEM Goodman switch arrives with the precise low-side setpoints and the correct fitting your unit needs for a leak-free, drop-in install. Generic switches often differ in trip pressure and thread size, which can mean nuisance lockouts or fitting adapters. For reliable protection, choose OEM.
Easy to Moderate — Disconnect power, recover or isolate refrigerant as needed, swap the switch, and confirm wiring. Any open refrigerant connection should be made by an EPA-certified technician.