Same-day shipping before 3PM CST · 35,000+ OEM Parts · Texas CMBL & SAM.gov Registered · Government POs Accepted

Menu

Home Shop All Account Cart
OEM Carrier High Pressure Switch HK02ZA442 for PY1RJA060115AAWB
Carrier

OEM Carrier High Pressure Switch HK02ZA442 for PY1RJA060115AAWB

SKU: CARRIE-PY1RJA060115AAWB-PRESSURE_SWITCH-HK02ZA442 Brand: Carrier
✓ Guaranteed to fit PY1RJA060115AAWB — or your money back. Terms

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier High Pressure Switch HK02ZA442 / HK02ZB044 for Model PY1RJA060115AAWB

This OEM high pressure switch (HK02ZA442) is the factory-authorized replacement for the Carrier PY1RJA060115AAWB packaged rooftop unit. The high pressure switch monitors refrigerant pressure on the discharge side of the compressor and opens the control circuit when pressure exceeds safe limits, preventing compressor damage. A failed or out-of-tolerance pressure switch typically presents as nuisance high-pressure lockouts, compressor fault codes at startup, or a system that trips out on a warm day without an apparent refrigerant issue. The companion low pressure switch HK02ZB044 is also available — both are listed under this product for your convenience.

  • Specs (HK02ZA442 — High Pressure Switch): 448 PSI opening pressure | 327 PSI closing pressure | OEM factory-matched setpoints | Replaces HK02ZA439
  • Specs (HK02ZB044 — Low Pressure Switch): 7 PSI opening pressure | 22 PSI closing pressure | 50" leads | 24V rated | Country of origin: Mexico
  • OEM vs Generic: Factory Authorized Parts are engineered to exact Carrier Corporation pressure setpoint specifications. Off-brand switches frequently drift in setpoint calibration, causing nuisance trips or — worse — failing to protect the compressor at true high-pressure events.
  • Install difficulty: 2/5 — Recover refrigerant charge before replacing the high pressure switch on the high side. Tools needed: manifold gauge set, adjustable wrench, wire stripper, multimeter. Low-pressure switch replacement is simpler: de-energize the unit, photograph wiring, unplug leads, and swap the switch body. Always verify setpoints match the data plate before ordering.
  • Warranty: 1-year OEM factory warranty. In-stock units ship same business day from our warehouse.

Compatibility: Engineered for the Carrier PY1RJA060115AAWB packaged rooftop unit. Confirm part number HK02ZA442 (high pressure) or HK02ZB044 (low pressure) against your unit's wiring diagram or data plate before ordering. Need help verifying fitment? Our HVAC parts specialists confirm compatibility before you buy — call or chat today and get your unit 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 PY1RJA060115AAWB?
Yes. This is the factory-specified OEM pressure switch for the Carrier PY1RJA060115AAWB. 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 PY1RJA060115AAWB?
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.
Home Shop Search Account Cart
Fitment Guaranteed
MR
Mike Rivera
HVAC Parts Specialist — Online