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OEM Carrier High Pressure Switch 395/295 PSI for PY2PNB030040NB
Carrier

OEM Carrier High Pressure Switch 395/295 PSI for PY2PNB030040NB

SKU: CARRIE-PY2PNB030040NB-PRESSURE_SWITCH-HK02ZA395 Brand: Carrier
✓ Guaranteed to fit PY2PNB030040NB — or your money back. Terms

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Texas CMBL #19328542014
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OEM Carrier High Pressure Switch 395/295 PSI — HK02ZA395 for Model PY2PNB030040NB

This factory-authorized OEM high pressure switch (part number HK02ZA395) is the direct replacement for the Carrier PY2PNB030040NB packaged or split-system unit. The high pressure switch is a critical refrigerant-circuit safety device: it continuously monitors system discharge pressure and opens the control circuit if pressure exceeds the factory-set cutout threshold, protecting the compressor from catastrophic over-pressure failure. When this switch fails or becomes erratic, you'll typically experience nuisance high-pressure lockouts, compressor short-cycling, or a system that trips on a fault code and requires manual reset — even when refrigerant charge and airflow appear normal.

  • Specs: Opens at 395 PSI | Closes (auto-reset) at 295 PSI | 240 VAC rated | 1/8" NPT thread | Sensata PS80-03-0018 platform | Cross-ref: HK02ZA395A, 406-300
  • OEM vs Generic: This is a genuine Carrier Factory Authorized Part. OEM switches are factory-calibrated to exact cutout/reset tolerances — critical for compressor protection. Aftermarket alternatives often carry ±5–10% pressure tolerances, risking either premature trips or under-protection of the compressor.
  • Install difficulty: 2/5 — Always recover refrigerant and depressurize the system before replacing a high pressure switch. Tools needed: refrigerant recovery unit, adjustable wrench, 1/8" NPT thread sealant (PTFE rated for refrigerant), multimeter to confirm continuity at rest. Photograph existing wiring before disconnecting spade terminals.
  • Warranty: 1-year OEM factory warranty. In stock and ships same business day from our NationalHVACParts.com warehouse.

Compatibility: Designed for the Carrier PY2PNB030040NB. Also replaces legacy part numbers 312926-217, 71267D1, HK02ZA380, HK02ZA396, and several other HK02ZA-series switches — always verify PSI ratings on your unit's data plate before ordering. Our team is available to confirm fitment prior to purchase. Order today and get back up and running fast.

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 PY2PNB030040NB?
Yes. This is the factory-specified OEM pressure switch for the Carrier PY2PNB030040NB. 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 PY2PNB030040NB?
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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