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The Goodman 0130M00074 High Pressure Cut-Off Switch is a genuine OEM safety control for the WPH4436AHAB packaged heat pump and compatible R-410A WPH-series units. Wired into the compressor control circuit, this switch opens and de-energizes the compressor when discharge pressure climbs to an unsafe level — protecting against a blocked condenser, failed fan, or overcharge that could otherwise rupture components or destroy the compressor.
Safety controls are not the place to save a few dollars. The OEM switch is calibrated to the exact cut-out and cut-in setpoints for this R-410A system. Generic switches with off-spec setpoints either nuisance-trip or, worse, fail to protect the compressor. Always use OEM for pressure safeties.
Moderate (2/5). Some models thread onto a Schrader-style fitting for tool-free replacement without recovery; brazed-in versions require refrigerant recovery and EPA certification. Confirm the connection type before ordering. 20–40 minutes for a technician.