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OEM Carrier High Pressure Switch 406/300 PSI — PY2PEB042090AA
Carrier

OEM Carrier High Pressure Switch 406/300 PSI — PY2PEB042090AA

SKU: CARRIE-PY2PEB042090AA-PRESSURE_SWITCH-HK02ZA395 Brand: Carrier
✓ Guaranteed to fit PY2PEB042090AA — or your money back. Terms

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier High Pressure Switch HK02ZA395 — 406/300 PSI for Model PY2PEB042090AA

This OEM high pressure switch (part number HK02ZA395) is the factory-specified safety control for the Carrier PY2PEB042090AA packaged unit. The high pressure switch continuously monitors refrigerant circuit pressure and cuts power to the compressor if system pressure exceeds the safe threshold — protecting the compressor from catastrophic failure caused by over-pressurization. When this switch fails or becomes stuck open, the system will lockout on a high pressure fault, preventing any cooling operation. Common symptoms include: intermittent compressor shutdowns, an active high pressure fault code on the control board, or a complete no-cooling condition even with the system calling for cooling.

  • Specs: Opens at 406 PSI | Closes at 300 PSI | Rated 6(6)A at 240 VAC | PMAX 41B | Manufacturer: Sensata (OEM for Carrier) | Part No. HK02ZA395 / HK02ZA395A
  • OEM vs Generic: This is a genuine Carrier Factory Authorized Part (FAP). OEM pressure switches are calibrated to exact cut-out/cut-in setpoints. Aftermarket alternatives may deviate from the 406/300 PSI rating, risking compressor damage or nuisance lockouts — especially critical in packaged commercial units.
  • Install Difficulty: 3/5 — Refrigerant circuit pressure must be at equilibrium before replacement. Tools needed: flat-head and Phillips screwdrivers, multimeter (to confirm switch continuity), wire labels. Always de-energize the unit at the disconnect before servicing. Verify refrigerant charge after installation to rule out underlying high-pressure faults.
  • Warranty & Shipping: 1-year OEM factory warranty against defects. In stock and ships same business day from our warehouse — get your system back online fast.

Compatibility: Verified direct-fit OEM replacement for Carrier model PY2PEB042090AA. Also replaces legacy part numbers: 312926-217, 71267D1, HK02ZA380, HK02ZA396, 19240027, HK02ZA400, 312926-225, 312926-226, 312926-233, HK02ZA401, HK02ZA435, HK02ZA500, and HK02ZA501. Always confirm the pressure switch setpoint rating on your unit's data plate before ordering. Our HVAC parts specialists are available to verify fitment — contact us before you buy.

Shipping Information

  • Orders placed before 3PM CST ship same business day
  • Standard delivery: 2-5 business days
  • Express shipping available at checkout
  • Free shipping on orders over $99
  • Tracking number emailed upon shipment

Return Policy

  • 30-day returns on unused parts in original packaging
  • Electrical parts (capacitors, contactors, control boards) are final sale once installed
  • Email info@nationalhvacparts.com to initiate a return
  • Refunds processed within 5-7 business days

Frequently Asked Questions

Does this Pressure Switch fit my Carrier OEM Carrier High Pressure Switch 406/300 PSI — PY2PEB042090AA?
Yes. This is the factory-specified OEM pressure switch for the Carrier OEM Carrier High Pressure Switch 406/300 PSI — PY2PEB042090AA. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.
How do I replace the pressure switch on my Carrier OEM Carrier High Pressure Switch 406/300 PSI — PY2PEB042090AA?
Difficulty: Medium (20–30 min)
Step 1: Turn off power. Step 2: Locate pressure switch near draft inducer. Step 3: Note tubing orientation. Step 4: Disconnect tubing and wires. Step 5: Remove screw, install new switch. Step 6: Reconnect tubing and wires, restore power.
My furnace shows a pressure switch error. What do I replace?
Furnace LED showing pressure switch error = switch not detecting draft inducer airflow. Try first: clear the rubber tubing to the switch (often clogged with condensation). If problem persists, replace the pressure switch.
Is this pressure switch compatible with Bryant or Payne too?
Many Carrier parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.
Should I use OEM or aftermarket for my Carrier pressure switch?
OEM recommended for reliability and warranty compatibility. OEM parts match exact factory specifications for proper fit, performance, and safety. While aftermarket alternatives cost less upfront, the risk of improper fit and reduced lifespan usually makes OEM the better value long-term.
How fast does National HVAC Parts ship?
Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.
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Mike Rivera
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