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The Goodman 0130M00075 Low Pressure Switch is a genuine OEM safety control built for the Goodman/Amana WPH4336AHAB package heat pump and compatible models. It monitors suction-side refrigerant pressure and interrupts the compressor circuit when pressure drops too low — protecting against loss-of-charge, refrigerant leaks, and freeze-up conditions that would otherwise damage the compressor.
The genuine Goodman OEM switch is factory-set to the correct cut-out and reset pressures for your system. Generic replacements may trip at different thresholds or use mismatched fittings and terminals, leading to false lockouts or inadequate protection. Choosing OEM keeps your unit's safety logic exactly as the manufacturer intended.
Moderate — Requires power disconnection and proper refrigerant handling to access the suction-line port. Recommended for a licensed HVAC professional. Estimated time: 30–45 minutes.
De-energize the unit at the disconnect and follow EPA refrigerant-handling practices before beginning any repair.