Four Seasons 20965 HVAC Binary Switch

Pressure Switch for Mitsubishi HVAC Systems

Four Seasons 20965 is a system-mounted HVAC binary pressure switch built for pressure-based A/C control in select Mitsubishi applications. It uses a rectangular male connector, a 2-terminal layout, and a steel body with a brown finish for direct replacement service.

Compatible With Mitsubishi 3000GT, Diamante, Galant, Montero, Mirage, and Sigma applications that use this pressure switch configuration, Four Seasons 20965 is an OE-style replacement that meets or exceeds OEM requirements.

Key Features

• Binary HVAC pressure switch for system-mounted installation
• Rectangular male connector with 2 terminals
• 3/8 in. x 24 male thread fitting
• Steel construction with brown housing
• Low-off at 28 psi and low-on at 30 psi
• Meets or exceeds OEM specifications

Detailed Description

This Four Seasons Pressure Switch, part number 20965, is used in HVAC systems to monitor refrigerant pressure and signal compressor control based on system pressure thresholds. The binary style design helps maintain proper A/C operation by switching at the specified low-off and low-on pressures. This part cross-references Continental 50009 for the same application.

Fits 1991-1993 Mitsubishi 3000GT, N/A. Fits 1992-1993 Mitsubishi Diamante, N/A. Fits 1988-1993 Mitsubishi Galant, N/A. Fits 1989-1993 Mitsubishi Montero, N/A. Fits 1987-1992 Mitsubishi Mirage, N/A. Fits 1989-1990 Mitsubishi Sigma, N/A. Four Seasons 20965 is a direct-fit pressure switch option for these Mitsubishi HVAC systems when the connector, thread size, and pressure settings match the original part.

Common Issues It Can Address

• A/C compressor cycling that does not follow normal pressure thresholds
• HVAC system pressure switch failure codes or intermittent control signals
• Compressor engagement problems related to pressure sensing
• Electrical connection issues at the pressure switch interface
• Replacement needs for a worn or damaged system-mounted switch

Installation Notes and Tips

Verify the connector shape, terminal count, and 3/8 in. x 24 thread size before installation. Confirm the system pressure switch location and compare the original low-off and low-on specifications to the replacement part. Always inspect the connector and surrounding HVAC components for corrosion or damage before installing Four Seasons 20965.

Quality Assurance

Four Seasons 20965 is built to meet or exceed OEM requirements for fit and function in the listed Mitsubishi applications. Four Seasons is a recognized aftermarket brand for HVAC service parts, and this pressure switch is engineered for replacement use in pressure-controlled A/C systems.