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The Goodman 0130M00075 Low Pressure Switch is a genuine OEM safety control for the APH1624H41AC heat pump. This switch senses suction-side refrigerant pressure and opens the control circuit when pressure drops too low — the classic sign of a refrigerant leak, low charge, or restricted flow. By shutting the compressor down before it runs on insufficient refrigerant, the low-pressure switch prevents overheating and slugging damage.
This factory OEM switch is set to the correct low-pressure cut-out and cut-in values for this system. Aftermarket switches with different set points can cause nuisance lockouts in cold weather or fail to catch a slow leak. For dependable compressor protection, the OEM-calibrated switch is the safe choice.
Easy to Moderate — Where the switch mounts on a self-sealing Schrader port, no refrigerant recovery is needed: disconnect power, pull the spade terminals, and thread the new switch on. On brazed or non-sealing ports, recovery and evacuation are required and should be performed by an EPA-certified technician. Plan 15–30 minutes. Always disconnect power at the breaker first.