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OEM Carrier Contactor 2-Pole 24V Coil for PH1ZNA048000ABAA
Carrier

OEM Carrier Contactor 2-Pole 24V Coil for PH1ZNA048000ABAA

SKU: CARRIE-PH1ZNA048000ABAA-CONTACTOR-HN51KC024 Brand: Carrier
✓ Guaranteed to fit PH1ZNA048000ABAA — or your money back. Terms

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier Contactor 2-Pole 24V Coil for Model PH1ZNA048000ABAA

This is the factory OEM replacement contactor for the Carrier PH1ZNA048000ABAA packaged heat pump unit, carrying OEM part number HN51KC024. The contactor is a high-voltage relay that acts as the primary electrical switch between the 24V control circuit and the high-voltage compressor and condenser fan motor circuits. When the thermostat calls for cooling or heating, the 24V coil energizes and closes the contacts, allowing line voltage to reach the compressor. When a contactor fails, symptoms include the outdoor unit not starting at all, chattering or buzzing sounds from the contactor itself, burnt or pitted contact points, or the system running continuously without shutting off.

  • Specs: 2-Pole design | 24V AC coil voltage | Factory-matched contact amperage rating | Direct OEM replacement for Carrier HN51KC024
  • OEM vs Generic: This OEM contactor is built to Carrier's exact coil pull-in voltage and contact amp ratings. Generic contactors may use lower-grade contact alloys that pit and weld faster under load, shortening service life significantly in high-cycle applications.
  • Install Difficulty: 2/5 — Always shut off power at the disconnect and breaker before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring connections before removal. A stuck-closed or welded contactor must never be re-used.
  • Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.

Compatibility: Designed specifically for the Carrier PH1ZNA048000ABAA packaged heat pump unit (4-ton, 048 series). Always verify coil voltage and pole configuration against your unit's wiring diagram before ordering. Our HVAC parts specialists are available to confirm fitment — reach out before you order if you have any questions. Order today and get same-day shipping on all in-stock OEM parts.

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 PH1ZNA048000ABAA?
Yes. This is the factory-specified OEM contactor for the Carrier PH1ZNA048000ABAA. 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 PH1ZNA048000ABAA?
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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