Four Seasons 20946 HVAC Binary Switch

Pressure Switch for HVAC Control

Four Seasons 20946 is a system-mounted HVAC binary pressure switch built for pressure-based A/C circuit control. It uses a male connector, female 3/8 in. x 24 fitting, and a 2-terminal Weather Pack design for a secure electrical connection in the HVAC system.

Compatible With Honda Passport, Subaru Forester, Isuzu Trooper, Acura SLX, and related Isuzu applications, this Four Seasons Pressure Switch is a direct-fit service part for vehicles that use a binary pressure switch in the A/C system. The Four Seasons pressure switch line focuses on replacement components that match OE-style fitment and system requirements.

Key Features

• Part number 20946
• HVAC binary switch with pressure-based operation
• System-mounted design
• Male connector with 2 terminals
• Female fitting, 3/8 in. x 24 thread size
• Steel construction
• Weather Pack connection
• Meets or exceeds OEM requirements

Detailed Description

This Four Seasons Pressure Switch 20946 is used in HVAC systems that rely on a binary pressure switch to monitor refrigerant pressure and support proper A/C circuit operation. The steel-bodied, system-mounted design is built for direct replacement service on select Honda, Subaru, Acura, and Isuzu vehicles. Cross-reference part numbers include Global Parts Distributors LLC 1711477 and Four Seasons 20946 for the same application.

Fits 1994-2002 Honda Passport, N/A; Fits 2001 Subaru Forester, N/A; Fits 1995-2000 Isuzu Trooper, N/A; Fits 1996-1999 Acura SLX, N/A; Fits 1998 Isuzu Amigo, N/A; Fits 1994 Isuzu Amigo, N/A; Fits 1994-1998 Isuzu Rodeo, N/A; Fits 1994 Isuzu Pickup, N/A; Fits 1993 Isuzu Amigo, N/A, From 4/93; Fits 1993 Isuzu Pickup, N/A, From 4/93; Fits 1993 Isuzu Trooper, N/A, From 4/93.

Common Problems It Can Address

• A/C compressor cycling caused by a faulty pressure switch
• Loss of refrigerant pressure signal to the HVAC control circuit
• Intermittent A/C engagement on select Honda, Subaru, Acura, and Isuzu models
• Electrical connection issues at the HVAC pressure switch
• Pressure switch replacement during A/C system service

Installation Notes and Tips

Verify the connector style, fitting thread size, and system-mounted location before installation. Confirm the vehicle uses a binary pressure switch and compare the original part number or interchange reference before replacing the component. Inspect the HVAC connector and sealing surfaces for corrosion or damage during service.

Quality Assurance

Four Seasons 20946 is listed as meeting or exceeding OEM requirements and is built as a replacement HVAC pressure switch for the specified applications.