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The Goodman 0130M00074 High Pressure Cut-Off Switch is a genuine OEM safety control for the APH1624H41AC heat pump. This normally-closed switch monitors refrigerant discharge pressure and opens the control circuit if pressure climbs to an unsafe level — protecting the compressor from damage caused by a dirty condenser coil, blocked airflow, or an overcharge. When a system short-cycles or trips on a high-pressure fault, a failed switch is a common cause.
This factory OEM switch is calibrated to the exact cut-out and cut-in pressures specified for this compressor. Generic pressure switches may use different trip points, leading to nuisance trips or, worse, failure to protect the compressor. Because this is a safety component, the OEM-matched pressure rating is strongly recommended.
Easy to Moderate — Most versions thread onto a Schrader-style fitting so refrigerant recovery is not required; simply disconnect power, unplug the two spade terminals, and swap the switch. If the port is not self-sealing, recovery and evacuation are needed — leave that to an EPA-certified technician. Plan 15–30 minutes. Always cut power at the breaker first.