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The Goodman 0130M00074 High Pressure Cut-Off Switch is a genuine OEM safety control for the WPH4348AHBB packaged heat pump. Wired into the control circuit, it monitors refrigerant discharge pressure and opens to shut down the compressor if pressure climbs into an unsafe range — protecting against damage from a dirty condenser coil, failed fan, blocked airflow, or overcharge. This is a critical safety device, not an optional part.
The OEM 0130M00074 is calibrated to Goodman's exact factory trip and reset pressures. Generic switches with different setpoints can trip too early (nuisance lockouts) or too late (allowing dangerous pressures that damage the compressor). On a safety control, matching the OEM calibration is essential.
Moderate — Connects to the refrigerant line and control wiring. Some versions require accessing the sealed system, so EPA 608 certification is recommended. Disconnect power and relieve the appropriate line before servicing.
Genuine Goodman safety part, in stock and ready to ship. Confirm your model for an exact fit.