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The Goodman 0130M00074 High Pressure Cut-Off Switch is a genuine OEM refrigerant safety control engineered for the Goodman/Amana WPH4336AHAB package heat pump and compatible models. This switch continuously monitors discharge-side refrigerant pressure and automatically opens the compressor circuit if pressure climbs to an unsafe level — protecting the compressor from damage caused by overcharge, a dirty condenser coil, or restricted airflow.
This is the genuine Goodman OEM part, factory-calibrated to the exact trip and reset pressures your unit was designed around. Universal aftermarket switches often have different cut-out thresholds and connector styles, which can cause nuisance trips or fail to protect the compressor at the correct pressure. For a safety control, OEM-matched calibration is worth it.
Moderate — Requires disconnecting power and, on most units, recovering or isolating refrigerant to replace the switch on the line. Best performed by a licensed HVAC technician. Estimated time: 30–45 minutes.
Always cut power at the disconnect and follow proper refrigerant-handling procedures before servicing.