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OEM Carrier High & Low Pressure Switch Kit HK02ZA395 / HK02ZB044 — PH2
Carrier

OEM Carrier High & Low Pressure Switch Kit HK02ZA395 / HK02ZB044 — PH2

SKU: CARRIE-PH2PNB060000AB-PRESSURE_SWITCH-HK02ZA395 Brand: Carrier
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Texas CMBL #19328542014
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OEM Carrier High & Low Pressure Switch Kit HK02ZA395 / HK02ZB044 for Model PH2PNB060000AB

This OEM pressure switch kit includes both the high pressure switch (HK02ZA395) and the low pressure switch (HK02ZB044) — the factory-specified refrigerant safety switches for Carrier model PH2PNB060000AB heat pumps. These switches protect the compressor from operating outside safe refrigerant pressure limits. When either switch fails or trips, the system will lock out and refuse to run heating or cooling cycles. Common failure symptoms include the system shutting off immediately after startup, an error code indicating a pressure fault, or a unit that won't call for cooling or heating despite a valid thermostat signal.

  • Specs — High Pressure Switch (HK02ZA395): Opens at 406 PSI | Closes at 300 PSI | 1/8" NPT thread | Sensata PS80 platform | 240 VAC rated | Replaces legacy part numbers including 312926-217, HK02ZA380, HK02ZA400, and HK02ZA435
  • Specs — Low Pressure Switch (HK02ZB044): Opens at 7 PSI | Closes at 22 PSI | 50" lead wires | 24V | Country of origin: Mexico | OEM Carrier RCD component
  • OEM vs Generic: OEM Carrier pressure switches are manufactured to exact factory tolerances and certified to EN12263, EN60730-2-6, and ENEC05 safety standards. Aftermarket alternatives frequently deviate from specified cut-in/cut-out pressures, risking compressor damage and voiding equipment warranties.
  • Install difficulty: 3/5 — Requires recovering refrigerant before disconnecting high-side switch per EPA Section 608 regulations. Tools needed: manifold gauge set, torque wrench, 1/8" NPT fittings, leak detector. Always verify system pressure after reinstallation before restarting the compressor.
  • Warranty: 1-year OEM factory warranty on both switches. In stock — ships same business day from our warehouse.

Compatibility: Engineered specifically for Carrier PH2PNB060000AB packaged heat pump units. Verify your model and serial number on the unit's data plate before ordering. Our HVAC parts specialists are available to confirm fitment — contact us before you order if you have any questions.

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 OEM Carrier High & Low Pressure Switch Kit HK02ZA395 / HK02ZB044 — PH2?
Yes. This is the factory-specified OEM pressure switch for the Carrier OEM Carrier High & Low Pressure Switch Kit HK02ZA395 / HK02ZB044 — PH2. 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 OEM Carrier High & Low Pressure Switch Kit HK02ZA395 / HK02ZB044 — PH2?
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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