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Four Seasons 20962 A/C Trinary Switch
| Brand | Four Seasons 20962 |
|---|---|
| Comp Open/Closed | Open |
| Connector Gender | Female |
| Connector Shape | Square |
| Description | System Mounted Trinary Pressure Switch |
| Fan Open/Closed | Open |
| Fitting Gender | Male |
| Fitting Thread Size | 3/8" x 24 |
| Item Included A Desc | 24606 |
| Item Included A Qty. | 1 |
| Material | Steel |
| Meets / Exceeds OEM? | YES |
| Mnt Sys Loc | System Mounted |
| Number of Terminals | 4 |
| Operate Psi High Off | 420 |
| Operate Psi High On | 280 |
| Operate Psi Low Off | 22 |
| Operate Psi Low On | 25 |
| Operate Psi Med Off | 188 |
| Operate Psi Med On | 240 |
| Style | Pressure |
| Terminal Type | Pin |
| Type | Trinary |
| Voltage | 12 |
| Weather Pack? | Yes |
| Product line | Pressure Switch |
| Fits | INFINITI and Nissan · 28 vehicles |
OE-spec replacement. Meets or exceeds OEM requirements for dependable system control.
Trinary pressure switch. Monitors pressure to help manage compressor and fan operation.
Steel construction. Built with a durable metal body and weather-pack connection.
Cross-references Four Seasons 20962, Global Parts Distributors LLC 1711491 and UAC SW11179C for the same application. See all 15.
Four Seasons 20962 A/C Trinary Pressure Switch
The Four Seasons Pressure Switch 20962 is a system-mounted A/C trinary switch built for 12-volt HVAC systems. It monitors refrigerant pressure and helps control compressor and condenser fan operation in the air conditioning circuit.
Key Features
- System-mounted trinary pressure switch for A/C clutch and compressor control
- 12-volt electrical design with 4 terminals
- Square female connector with pin terminals
- Male fitting with 3/8" x 24 thread size
- Steel construction
- Weather Pack sealed connection
- Meets or exceeds OEM requirements
- Pressure operating points: low on 25 psi, low off 22 psi, medium on 240 psi, medium off 188 psi, high on 280 psi, high off 420 psi
Product Details
This Four Seasons trinary pressure switch is part of the Pressure Switch line and is used in HVAC systems that need pressure-based compressor protection and fan control. The 20962 is a direct-fit style replacement for select Nissan and INFINITI applications, including 1997-2001 INFINITI Q45, 1997-1999 INFINITI I30, 1999-2002 INFINITI G20, 1997-1999 Nissan Maxima, 1998-2001 Nissan Altima, 1997-1998 Nissan 240SX, 1999-2002 Nissan Frontier, and 2000-2002 Nissan Xterra. This part cross-references UAC SW11179C and Global Parts Distributors LLC 1711491 for the same application. Four Seasons 20962 is a practical choice when replacing a worn A/C trinary switch on Nissan Frontier, Nissan Xterra, or INFINITI Q45 HVAC systems.
What It Helps Address
- Compressor cycling caused by incorrect refrigerant pressure readings
- Condenser fan control issues tied to the pressure switch circuit
- A/C shutdown from an open or failed pressure switch
- Intermittent cooling performance in the HVAC system
- Electrical connection problems at the pressure switch interface
Installation Notes
Verify connector shape, terminal count, fitting thread size, and pressure thresholds before installation. This is a system-mounted switch, so confirm the original mounting location and refrigerant circuit configuration on the vehicle. Always compare the existing part number and connector style before replacing the switch on compatible Nissan and INFINITI models.
Quality Assurance
Four Seasons states that this pressure switch meets or exceeds OEM requirements. The steel housing and Weather Pack connection support dependable service in automotive HVAC environments.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2002 | INFINITI | G20 | — | — | N/A | Pressure Switch |
| 2002 | Nissan | Frontier | 3.3L | V6 | N/A | Pressure Switch |
| 2002 | Nissan | Xterra | 3.3L | V6 | N/A | Pressure Switch |
| 2001 | INFINITI | G20 | — | — | N/A | Pressure Switch |
| 2001 | INFINITI | Q45 | — | — | N/A | Pressure Switch |
| 2001 | Nissan | Altima | — | — | N/A | Pressure Switch |
| 2001 | Nissan | Frontier | 3.3L | V6 | N/A | Pressure Switch |
| 2001 | Nissan | Xterra | 3.3L | V6 | N/A | Pressure Switch |
| 2000 | INFINITI | G20 | — | — | N/A | Pressure Switch |
| 2000 | INFINITI | Q45 | — | — | N/A | Pressure Switch |
| 2000 | Nissan | Altima | — | — | N/A | Pressure Switch |
| 2000 | Nissan | Frontier | 3.3L | V6 | N/A | Pressure Switch |
| 2000 | Nissan | Xterra | 3.3L | V6 | N/A | Pressure Switch |
| 1999 | INFINITI | G20 | — | — | N/A | Pressure Switch |
| 1999 | INFINITI | I30 | — | — | N/A | Pressure Switch |
| 1999 | INFINITI | Q45 | — | — | N/A | Pressure Switch |
| 1999 | Nissan | Altima | — | — | N/A | Pressure Switch |
| 1999 | Nissan | Frontier | 3.3L | V6 | N/A | Pressure Switch |
| 1999 | Nissan | Maxima | — | — | N/A | Pressure Switch |
| 1998 | INFINITI | I30 | — | — | N/A | Pressure Switch |
| 1998 | INFINITI | Q45 | — | — | N/A | Pressure Switch |
| 1998 | Nissan | 240SX | — | — | N/A | Pressure Switch |
| 1998 | Nissan | Altima | — | — | N/A | Pressure Switch |
| 1998 | Nissan | Maxima | — | — | N/A | Pressure Switch |
| 1997 | INFINITI | I30 | — | — | N/A | Pressure Switch |
| 1997 | INFINITI | Q45 | — | — | N/A | Pressure Switch |
| 1997 | Nissan | 240SX | — | — | N/A | Pressure Switch |
| 1997 | Nissan | Maxima | — | — | N/A | Pressure Switch |
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