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The Goodman 0130M00075 is a factory OEM low pressure switch that safeguards the compressor in APH1543M41CA series heat pumps. It monitors suction-side refrigerant pressure and opens the safety circuit if pressure drops too low — a classic sign of a leak, loss of charge, or restricted flow. Shutting the system down under these conditions prevents the compressor from running dry and burning out. This genuine switch restores proper loss-of-charge protection and clears low-pressure lockouts.
Genuine Goodman switches carry the precise low-pressure cut-out setpoint this unit requires. A generic switch set to the wrong threshold can either nuisance-trip in cold weather or fail to protect the compressor during an actual leak. For a safety-critical part, OEM calibration is worth it.
Moderate — refrigerant system. Mounts on the suction line and ties into the low-voltage safety circuit. Depending on the fitting, refrigerant recovery may be required. Always disconnect power first. An EPA-certified HVAC technician is recommended. About 30–60 minutes.