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OEM Carrier Contactor 24V Coil 2-Pole for PY3GNAA24040AA
Carrier

OEM Carrier Contactor 24V Coil 2-Pole for PY3GNAA24040AA

SKU: CARRIE-PY3GNAA24040AA-CONTACTOR-HN51KC024 Brand: Carrier
✓ Guaranteed to fit PY3GNAA24040AA — or your money back. Terms

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier Contactor 24V Coil 2-Pole for Model PY3GNAA24040AA

This is the factory OEM replacement contactor (part number HN51KC024) for the Carrier PY3GNAA24040AA packaged unit. The contactor is the high-voltage relay that receives a 24V signal from the thermostat or control board and closes to send line voltage to the compressor and/or condenser fan motor. When a contactor fails — whether due to pitted contacts, a burned coil, or a stuck plunger — the most common symptom is an air conditioning system that simply will not turn on, or one that runs continuously without cycling off.

  • Specs: 24V AC coil voltage | 2-pole configuration | Replaces OEM part number HN51KC024 | Factory-matched contact rating for the PY3GNAA24040AA unit
  • OEM vs Generic: This OEM contactor is built to Carrier's exact contact gap, coil pull-in voltage, and amperage ratings. Generic contactors can have inconsistent coil resistance and lower-grade contact materials, leading to premature pitting and failure — especially in high-cycle cooling seasons.
  • Install difficulty: 3/5 — Work must be performed with power fully disconnected at the disconnect box AND the breaker panel. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter, and wire labels or tape for documenting existing wiring. Photo all wire positions before removal.
  • Warranty: 1-year OEM factory warranty. Orders placed before cutoff ship the same business day from our warehouse.

Compatibility: Designed as the direct OEM replacement for Carrier model PY3GNAA24040AA. Always verify the coil voltage and pole configuration on your existing contactor's data label before ordering. Our fitment specialists are available to confirm compatibility — just reach out 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 $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 PY3GNAA24040AA?
Yes. This is the factory-specified OEM contactor for the Carrier PY3GNAA24040AA. 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 PY3GNAA24040AA?
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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