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OEM Payne Pressure Switch High/Low for PA13NR018000ACAA
Payne

OEM Payne Pressure Switch High/Low for PA13NR018000ACAA

SKU: PAYNE-PA13NR018000ACAA-PRESSURE_SWITCH-HK02ZA395 Brand: Payne

Order before 3PM CST — ships same day.
Standard delivery 2-5 business days. Express options at checkout.

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OEM Payne High & Low Pressure Switch for Model PA13NR018000ACAA

This OEM pressure switch replacement covers both the high pressure switch (HK02ZA395) and low pressure switch (HK02ZB028) for the Payne PA13NR018000ACAA split-system air conditioner. Pressure switches are safety devices that monitor refrigerant pressure on both the high and low sides of the refrigerant circuit. When either switch detects a pressure reading outside the safe operating range — too high or too low — it opens the circuit and shuts down the system to prevent compressor damage. Common failure symptoms include the system refusing to start, short-cycling immediately after startup, or the control board logging a pressure fault lockout code.

  • Specs: High Pressure Switch — OEM part HK02ZA395 | Low Pressure Switch — OEM part HK02ZB028 | 24V control circuit compatible | Factory-calibrated cut-out and cut-in set points for R-410A refrigerant systems
  • OEM vs Generic: OEM pressure switches are calibrated to exact factory set-point tolerances for the PA13NR018000ACAA refrigerant circuit. Generic substitutes frequently use wider pressure tolerances, risking nuisance trips or, worse, missed fault conditions that can damage the compressor.
  • Install difficulty: 3/5 — Refrigerant circuit work must be performed by an EPA 608-certified technician. Tools needed: manifold gauge set, multimeter, flathead and Phillips screwdrivers. Always recover refrigerant before disconnecting pressure switch lines and verify pressure readings after reassembly.
  • Warranty: 1-year OEM factory warranty on both HK02ZA395 and HK02ZB028. Orders placed by 3 PM ship same business day from our warehouse.

Compatibility: Engineered specifically for the Payne PA13NR018000ACAA 1.5-ton split-system air conditioner. Confirm your existing switch part numbers (HK02ZA395 for high-side, HK02ZB028 for low-side) against your unit's wiring diagram or data plate before ordering. Need help verifying fitment? Our HVAC parts specialists confirm compatibility before you buy — contact us today and get your system back up 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 $75
  • 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 support@nationalhvacparts.com to initiate a return
  • Refunds processed within 5-7 business days

Frequently Asked Questions

Does this Pressure Switch fit my Payne PA13NR018000ACAA?
Yes. This is the factory-specified OEM pressure switch for the Payne PA13NR018000ACAA. 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 Payne PA13NR018000ACAA?
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 Payne 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 Payne 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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