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OEM Carrier Flame Sensor 48GS400192 for PY3PNA018040NA
OEM Carrier Flame Sensor 48GS400192 for PY3PNA018040NA
OEM Carrier Flame Sensor 48GS400192 for PY3PNA018040NA
OEM Carrier Flame Sensor 48GS400192 for PY3PNA018040NA
Carrier

OEM Carrier Flame Sensor 48GS400192 for PY3PNA018040NA

SKU: CARRIE-PY3PNA018040NA-FLAME_SENSOR-48GS400192 Brand: Carrier
✓ Guaranteed to fit PY3PNA018040NA — or your money back. Terms

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Texas CMBL #19328542014
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OEM Carrier Flame Sensor 48GS400192 for Model PY3PNA018040NA

This is the OEM factory-specified flame sensor (part number 48GS400192) for the Carrier PY3PNA018040NA packaged unit. The flame sensor — also called a flame rod — is a safety component that detects the presence of a burner flame by measuring microamp current through the rod. When the sensor becomes coated with oxidation or carbon buildup, it can no longer reliably detect the flame, causing the control board to cut gas flow as a safety precaution. The result is a frustrating cycle: the furnace ignites normally, runs for 5–8 seconds, then shuts down and locks out. Replacing the flame sensor with a genuine OEM part restores proper operation and eliminates nuisance lockouts.

  • Specs: OEM part number 48GS400192 | Factory-matched rod geometry and ceramic insulator | Correct microamp output range for Carrier control board compatibility
  • OEM vs Generic: OEM flame sensors use the exact rod alloy and ceramic insulation specified by Carrier's engineering team. Generic alternatives may have slightly different rod lengths or tip geometry, which can produce inconsistent microamp readings and recurring lockouts — even after cleaning.
  • Install Difficulty: 2/5 — Always shut off gas supply and 120V power before beginning. Tools needed: 1/4" hex driver or nut driver, needle-nose pliers. Photograph wiring harness connector orientation before disconnecting. Lightly sand the rod with fine steel wool only if reusing; when replacing, install new sensor clean and dry.
  • Warranty: 1-year OEM factory warranty against defects. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Designed as a direct OEM replacement for the Carrier PY3PNA018040NA packaged unit. Always verify the OEM part number on your existing sensor or equipment data plate before ordering. Have questions about fitment? Our HVAC parts specialists confirm compatibility before you buy — contact us before placing your order.

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 Flame Sensor fit my Carrier PY3PNA018040NA?
Yes. This is the factory-specified OEM flame sensor for the Carrier PY3PNA018040NA. 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 flame sensor on my Carrier PY3PNA018040NA?
Difficulty: Easy (10–15 min)
Step 1: Turn off power/gas. Step 2: Open furnace panel. Step 3: Locate flame sensor rod near burners. Step 4: Remove single mounting screw. Step 5: Clean rod with 400-grit sandpaper until shiny (or replace). Step 6: Reinstall and tighten. Most common furnace repair — saves $150–$300 vs technician.
My furnace lights then shuts off after a few seconds. Why?
Furnace lights then shuts off after 3–10 seconds = dirty flame sensor in 90% of cases. The sensor can’t detect flame through oxidation buildup. Fix: clean with 400-grit sandpaper (free, 15 min). If cleaning doesn’t work, replace the sensor.
Is this flame sensor 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 flame sensor?
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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