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The 0130M00075 is a genuine OEM low-pressure switch for the Goodman/Amana APH1630M41AB heat pump. Installed on the suction/low side of the refrigerant circuit, it opens the control circuit to stop the compressor when suction pressure drops too low — the classic sign of a refrigerant leak, loss of charge, or restricted flow. This loss-of-charge protection prevents the compressor from running dry and overheating. Trip and reset set points are pre-calibrated for the unit's R-410A system, and the switch auto-resets when pressure recovers.
OEM ensures the correct low-side cut-out/cut-in pressures and matching fitting and terminal layout. A generic switch with off-spec set points can leave the compressor unprotected during a slow leak or cause repeated nuisance trips. For loss-of-charge safety, OEM calibration is the right call.
Rating: Moderate–Hard (Pro Recommended) — Schrader-port variants allow a quick no-recovery replacement; sealed or braze-in ports require EPA-certified recovery and recharge. Confirm your port type first.