Four Seasons HVAC Binary Switch 20953
Four Seasons HVAC Binary Switch 20953 - view 2
Four Seasons HVAC Binary Switch 20953 - view 3
Four Seasons HVAC Binary Switch 20953 - view 4
Four Seasons HVAC Binary Switch 20953
Four Seasons HVAC Binary Switch 20953 - view 2
Four Seasons HVAC Binary Switch 20953 - view 3
Four Seasons HVAC Binary Switch 20953 - view 4

Four Seasons HVAC Binary Switch P/N:20953

Be the first to review this product
$65.99
MPN: 20953
Item Package Quantity: 1
Adding to cart… The item has been added

Have questions?

Ask an Expert
Four Seasons HVAC Binary Switch P/N:20953
Four Seasons HVAC Binary Switch P/N:20953
$65.99

Help protect your A/C compressor from unsafe refrigerant pressure with this Four Seasons switch, part number 20953. It is a system-mounted binary pressure switch built as a direct-fit replacement for the 1993 Mazda 626, 1992-1993 Mazda MX-3 and 1992-1993 Mazda MX-6. A binary switch monitors refrigerant pressure in the A/C system and opens the compressor clutch circuit when pressure drops too low or climbs too high, which helps guard the compressor against damage.

  • Zinc coated: the switch carries a zinc coating to resist corrosion.
  • Vehicle-specific: built for specific applications, not as a universal switch.
  • Seals included: comes with the gaskets, O-rings or seals needed to replace the product properly.
  • Color coded: marked for easy identification.

Four Seasons engineers and tests its products and backs them with more than 50 years of mobile A/C experience. A failed binary switch may cause a compressor that will not engage, warm air from the vents, or erratic compressor cycling. These symptoms can have other causes, so diagnose the system before replacing the switch. See the Buyer's Guide tab for engine details.

Interchange: 1551029 · 207765 · 11120953 · 19188177 · 1711496 · GA2A61503 · A07765 · MT0642 · SW11147 · SW11217C

This part cross-references / interchanges with the following part numbers:

1551029, 207765, 20953, 11120953, 19188177, 1711496, GA2A61503, A07765, MT0642, SW11147, SW11217C

Frequently Asked Questions

What does the Four Seasons 20953 binary switch do?

It monitors A/C refrigerant pressure and interrupts the compressor clutch circuit if pressure falls too low or rises too high, helping protect the compressor.

Which vehicles does this binary switch fit?

It is a direct-fit replacement for the 1993 Mazda 626, 1992-1993 Mazda MX-3 and 1992-1993 Mazda MX-6. See the Buyer's Guide tab for engine details.

What comes with the switch?

The switch includes the gaskets, O-rings or seals needed to replace the product properly. It is also zinc coated to resist corrosion and color coded for easy identification.

What are signs a binary switch may need replacing?

Signs include an A/C compressor that won't engage, warm air from the vents, or erratic compressor cycling. These can have other causes, so diagnose the system first.

Does replacing it require A/C service?

The switch mounts on the A/C system, so replacing it may require recovering the refrigerant first. Follow the vehicle service information and use proper A/C service equipment.

Related Products

!