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OEM Payne Pressure Switch High/Low for PA10JA03600GAGAA
Payne

OEM Payne Pressure Switch High/Low for PA10JA03600GAGAA

SKU: PAYNE-PA10JA03600GAGAA-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 PA10JA03600GAGAA

These OEM pressure switches — HK02ZA395 (High Pressure Switch) and HK02ZB028 (Low Pressure Switch) — are the factory-specified replacements for the Payne PA10JA03600GAGAA packaged air conditioner unit. The pressure switches monitor refrigerant circuit pressure on both the high-side and low-side to protect the compressor from operating outside safe pressure limits. When either switch fails or detects an out-of-range pressure condition, the system will lock out, preventing compressor operation and triggering a fault code. Common symptoms include the system refusing to start, short-cycling immediately after startup, or a persistent fault light on the control board.

  • Specs: HK02ZA395 — High-Side Pressure Switch | HK02ZB028 — Low-Side Pressure Switch | Factory-calibrated cut-out setpoints | Spade terminal connections | Designed for R-410A refrigerant systems
  • OEM vs Generic: OEM pressure switches from Payne (ICP/Carrier family) are precision-calibrated to exact cut-in and cut-out pressure thresholds. Generic aftermarket switches often carry wider pressure tolerances, which can allow the compressor to operate in damaging conditions or cause nuisance trips — risking costly compressor failure.
  • Install difficulty: 3/5 — Refrigerant pressure switches are located in the refrigerant circuit. While no refrigerant recovery is required to swap the switch itself, the system must be de-energized at the disconnect before service. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify continuity across switch). Always note wire polarity and snap photos before disconnecting terminals.
  • Warranty: 1-year OEM factory warranty on both HK02ZA395 and HK02ZB028. Orders ship same business day from our stocked warehouse.

Compatibility: Both switches are engineered specifically for the Payne PA10JA03600GAGAA packaged air conditioning unit (3-ton, R-410A). Verify your existing switch part number against HK02ZA395 or HK02ZB028 before ordering, and confirm refrigerant type on your unit's data plate. Need help confirming fitment? Our HVAC parts specialists verify compatibility before you purchase — contact us today and get your unit back online fast with same-day shipping.

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 PA10JA03600GAGAA?
Yes. This is the factory-specified OEM pressure switch for the Payne PA10JA03600GAGAA. 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 PA10JA03600GAGAA?
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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