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OEM Payne Pressure Switch High/Low for PA10JA04800MADAA
Payne

OEM Payne Pressure Switch High/Low for PA10JA04800MADAA

SKU: PAYNE-PA10JA04800MADAA-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 PA10JA04800MADAA

These are the factory-specified OEM pressure switches for the Payne PA10JA04800MADAA packaged air conditioning unit. The pressure switch (also called a refrigerant safety switch) monitors system refrigerant pressure on both the high-pressure and low-pressure sides of the refrigerant circuit. When either switch detects an out-of-range pressure condition, it sends a signal to the control board to shut down the system — protecting the compressor from catastrophic damage. Common failure symptoms include the system failing to start, short-cycling, or triggering a fault code indicating a pressure trip. Two OEM part numbers are available: HK02ZA395 (High Pressure Switch) and HK02ZB028 (Low Pressure Switch) — select the correct switch for your diagnosed failure before ordering.

  • Specs: HK02ZA395 — High-Side Pressure Switch | HK02ZB028 — Low-Side Pressure Switch | Factory-calibrated trip points | Spade terminal connectors | OEM-matched contact ratings for Payne PA10JA04800MADAA
  • OEM vs Generic: OEM pressure switches are calibrated to exact factory trip-point specifications. Aftermarket switches frequently use broader tolerance ranges, risking nuisance trips or — more critically — failure to protect the compressor under genuine fault conditions.
  • Install difficulty: 3/5 — Refrigerant circuit work may require an EPA 608-certified technician depending on your local regulations. Tools needed: manifold gauge set, flathead screwdriver, multimeter. Always recover refrigerant before disconnecting pressure switch fittings if the switch is plumbed into the refrigerant line. Electrical-only switches can be swapped with the system powered down using basic hand tools.
  • Warranty: 1-year OEM factory warranty against defects in materials and workmanship. Orders ship same business day from our warehouse when placed before 3 PM local time.

Compatibility: Engineered specifically for the Payne PA10JA04800MADAA packaged air conditioning unit. Confirm your existing switch's OEM part number — HK02ZA395 for high-side or HK02ZB028 for low-side — against your unit's wiring diagram or data plate before ordering. Need help confirming fitment? Our HVAC parts specialists verify compatibility 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 $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 PA10JA04800MADAA?
Yes. This is the factory-specified OEM pressure switch for the Payne PA10JA04800MADAA. 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 PA10JA04800MADAA?
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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