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The Goodman 0130M00075 is a genuine OEM low pressure switch for the APH1536M41CA packaged heat pump. It monitors suction-side refrigerant pressure and opens the control circuit when pressure drops too low — the classic loss-of-charge or frozen-coil scenario — stopping the compressor before it runs dry and self-destructs. Like its high-pressure counterpart, it is a factory safety device.
A generic low pressure switch with the wrong cut-out point will either lock out a healthy system in cold-weather heat-pump operation or ignore a genuine low-charge condition. The OEM 0130M00075 carries Goodman's factory pressure calibration and correct fitting, ensuring the switch protects the compressor without nuisance trips during defrost.
Moderate (3/5). Mounted on the suction line. Schrader-fitting versions swap without recovery; brazed versions require refrigerant recovery and evacuation. Best handled by an EPA-certified technician. Disconnect power and verify pressures before servicing.
Compatible with APH1536M41CA. Verify your model and part number before ordering.