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OEM Carrier High Pressure Switch HK02ZA395 for PH2PPB048000AA
Carrier

OEM Carrier High Pressure Switch HK02ZA395 for PH2PPB048000AA

SKU: CARRIE-PH2PPB048000AA-PRESSURE_SWITCH-HK02ZA395 Brand: Carrier
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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier High Pressure Switch HK02ZA395 / HK02ZB044 for Model PH2PPB048000AA

This genuine OEM high pressure switch (part number HK02ZA395) is the factory-specified replacement for the Carrier PH2PPB048000AA packaged heat pump unit. The high pressure switch is a critical refrigerant-circuit safety device: it monitors discharge-side refrigerant pressure and opens the control circuit if pressure exceeds a safe threshold. When the switch fails or trips, the system may lock out on a high-pressure fault, short-cycle, or refuse to cool entirely — even when the refrigerant charge and airflow are normal. A secondary low-pressure switch (HK02ZB044) is also specified for this model and is available as an add-on.

  • Specs — HK02ZA395 (High Pressure Switch): Opens at 395 PSI | Closes at 295 PSI | 1/8" NPT male thread | 240 VAC | PMAX 41 Bar | Sensata PS80 platform | Replaces legacy P/Ns: 312926-217, 71267D1, HK02ZA380, HK02ZA396, HK02ZA400, HK02ZA401
  • Specs — HK02ZB044 (Low Pressure Switch): Opens at 7 PSI | Closes at 22 PSI | 50" lead wire | 24V control circuit | OEM Carrier/Bryant/Payne fitment
  • OEM vs Generic: OEM switches are factory-calibrated to exact trip points (±2%). Aftermarket substitutes often carry wider tolerances, risking nuisance lockouts at low ambient temperatures or delayed trip under true high-pressure conditions — both of which shorten compressor life.
  • Install Difficulty: 2/5 — Always recover refrigerant per EPA 608 regulations before replacing a refrigerant-circuit pressure switch. Tools needed: manifold gauge set, adjustable wrench or 1" open-end wrench, Teflon tape or refrigerant-rated thread sealant. Restore charge and verify system pressures after installation. Not a DIY repair in most jurisdictions — licensed technician recommended.
  • Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse when ordered by 3PM local time.

Compatibility: Engineered for the Carrier PH2PPB048000AA packaged heat pump (4-ton, R-22 refrigerant circuit). Always verify part numbers against your unit's wiring diagram and data plate before ordering. Need help confirming fitment? Our technical team verifies 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 $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 PH2PPB048000AA?
Yes. This is the factory-specified OEM pressure switch for the Carrier PH2PPB048000AA. 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 PH2PPB048000AA?
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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