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OEM Carrier Contactor 24V Coil 2-Pole for PY3GNA042090NA
Carrier

OEM Carrier Contactor 24V Coil 2-Pole for PY3GNA042090NA

SKU: CARRIE-PY3GNA042090NA-CONTACTOR-HN51KB024 Brand: Carrier
✓ Guaranteed to fit PY3GNA042090NA — or your money back. Terms

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier Contactor 24V Coil 2-Pole for Model PY3GNA042090NA

This is the factory-specified OEM replacement contactor (part number HN51KB024) for the Carrier PY3GNA042090NA packaged unit. The contactor is the high-voltage relay that your thermostat's 24V control signal energizes to send line voltage to the compressor and condenser fan motor. When the contactor fails — due to pitted or burned contacts, a stuck plunger, or a failed coil — the system will either refuse to start, run continuously without cycling off, or produce a loud chattering or buzzing noise from the electrical panel area.

  • Specs: 2-pole contactor | 24V AC coil voltage | Factory-matched contact rating for Carrier PY3GNA042090NA | Direct OEM drop-in replacement for part number HN51KB024
  • OEM vs Generic: This OEM contactor uses factory-spec contact materials and coil windings, ensuring proper pull-in voltage and long contact life. Generic contactors may use lower-grade contact alloys prone to early pitting, carbon buildup, and premature failure — especially under high-cycle summer loads.
  • Install Difficulty: 3/5 — Always disconnect and lock out power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, 1/4" and 5/16" nut drivers, needle-nose pliers, multimeter. Photograph all wiring connections before removal. Line-voltage terminals remain live until the disconnect is pulled — treat all wiring as energized until confirmed otherwise.
  • Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Designed as a direct OEM replacement for Carrier model PY3GNA042090NA packaged units. Always verify coil voltage, pole count, and amperage rating on your existing contactor's data label before ordering. Have questions about fitment? Our HVAC parts specialists confirm compatibility before you buy — no guesswork.

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 Contactor fit my Carrier PY3GNA042090NA?
Yes. This is the factory-specified OEM contactor for the Carrier PY3GNA042090NA. 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 contactor on my Carrier PY3GNA042090NA?
Difficulty: Medium (30–45 min)
Step 1: Turn off breaker. Step 2: Open condensing unit panel. Step 3: Photograph ALL wiring on the contactor. Step 4: Label each wire with tape. Step 5: Disconnect wires and remove old contactor. Step 6: Mount new contactor, reconnect wires matching your photo. Step 7: Restore power and test.
My AC clicks but the compressor won’t turn on. What’s wrong?
Clicking from the outdoor unit without the compressor starting = worn contactor. The contactor sends power to the compressor. When its contacts are pitted, it clicks but can’t make solid contact. Look for: visible pitting/burn marks on the contactor face, intermittent operation, or buzzing.
Is this contactor 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 contactor?
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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Mike Rivera
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