OEM Goodman Low Pressure Switch for WPH4324AMAB — 0130M00075

Goodman 0130M00075 Low Pressure Switch

The genuine Goodman 0130M00075 is a low-pressure safety switch for the WPH4324AMAB packaged heat pump and compatible Goodman/Amana systems. Installed on the low (suction) side of the refrigerant circuit, it opens the control circuit and stops the compressor when suction pressure drops too low — protecting against loss-of-charge, a restricted metering device, or freeze conditions. This prevents the compressor from running dry and slugging, which is a common cause of costly compressor failure.

Specifications

• Part type: Low-pressure (loss-of-charge) safety switch
• Circuit side: Low (suction) side
• Fit: Goodman/Amana WPH4324AMAB packaged unit
• Function: Opens control circuit on low-side underpressure
• Factory-matched cut-out / cut-in pressure setpoints

OEM vs. Generic

The OEM 0130M00075 uses the exact factory cut-out and cut-in setpoints tuned to this refrigerant system. Generic replacements with the wrong setpoints either lock out the compressor in cold weather or fail to protect against a genuine loss of charge. OEM ensures the switch trips only when it should.

Install Difficulty: Moderate

Low-pressure switches frequently mount on a Schrader access port so charge is preserved during the swap, but refrigerant-side service should be done by an EPA 608-certified technician. Cut power to the unit, thread on the new switch, land the control leads on the correct terminals, and confirm normal suction pressures at startup with gauges.