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The 0130M00075 is a genuine OEM low-pressure switch for the Goodman/Amana APH1549M41BA packaged heat pump. Installed in the 24V safety circuit, it senses refrigerant suction pressure and opens the circuit to stop the compressor when pressure drops too low — the classic sign of a refrigerant undercharge, restriction, or loss-of-charge condition. This loss-of-charge protection prevents the compressor from running dry and burning out.
Like all pressure controls, the cut-out and reset set points are what matter. A generic switch with mismatched pressures can shut the system down needlessly or fail to catch a real loss of charge. The OEM 0130M00075 carries the factory-calibrated set points for the APH1549M41BA, so it protects the compressor exactly as designed.
Moderate (3 of 5). The switch mounts to a refrigerant port, typically over a Schrader-style fitting that keeps the system sealed during the swap. De-energize the unit, remove the two spade leads, unthread the old switch, install and torque the replacement, then reconnect. Confirm there is a Schrader depressor before starting; otherwise recovery is required. Budget 30–45 minutes.
Ships from a US warehouse. Fitment questions? Contact info@nationalhvacparts.com.