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OEM Payne Pressure Switch High/Low for PA10PA03600MABAA
Payne

OEM Payne Pressure Switch High/Low for PA10PA03600MABAA

SKU: PAYNE-PA10PA03600MABAA-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 PA10PA03600MABAA

These OEM pressure switches — HK02ZA395 (High Pressure Switch) and HK02ZB028 (Low Pressure Switch) — are the factory-specified replacements for the Payne PA10PA03600MABAA packaged air conditioning unit. Pressure switches prove that the system's refrigerant pressures are within safe operating limits before allowing the control board to proceed through the startup sequence. When either switch fails, the unit will typically lock out before ignition, trip a fault code, or cycle off immediately after startup — symptoms often misdiagnosed as a refrigerant or compressor issue.

  • Specs: HK02ZA395 — High-side pressure switch, factory-calibrated cut-out set point | HK02ZB028 — Low-side pressure switch, factory-calibrated cut-in set point | OEM-matched pressure ratings for R-410A refrigerant systems | Direct plug-in spade terminal connectors for drop-in replacement
  • OEM vs Generic: OEM Payne/Carrier pressure switches are factory-calibrated to exact W.C. or PSI set points for this model. Generic alternatives frequently carry wider tolerances that can allow unsafe operating pressures, risking compressor damage or nuisance lockouts.
  • Install difficulty: 2/5 — Shut off power at the disconnect and verify zero voltage before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter for continuity verification. Always photograph existing wiring and hose routing before disconnecting. Note which switch (high or low side) is being replaced to ensure correct reinstallation.
  • Warranty: 1-year OEM factory warranty. In-stock units ship same business day from our warehouse when ordered before cutoff.

Compatibility: These pressure switches are engineered specifically for the Payne PA10PA03600MABAA packaged air conditioning unit. Verify OEM part numbers HK02ZA395 and HK02ZB028 against your unit's wiring diagram or data plate before ordering. Need fitment confirmation? Our HVAC parts specialists verify compatibility before you buy — contact us today and get your system back online 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 PA10PA03600MABAA?
Yes. This is the factory-specified OEM pressure switch for the Payne PA10PA03600MABAA. 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 PA10PA03600MABAA?
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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