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OEM Carrier Flame Sensor 90° w/ Bracket for PY3PNA042090NB
OEM Carrier Flame Sensor 90° w/ Bracket for PY3PNA042090NB
OEM Carrier Flame Sensor 90° w/ Bracket for PY3PNA042090NB
OEM Carrier Flame Sensor 90° w/ Bracket for PY3PNA042090NB
Carrier

OEM Carrier Flame Sensor 90° w/ Bracket for PY3PNA042090NB

SKU: CARRIE-PY3PNA042090NB-FLAME_SENSOR-48GS400192 Brand: Carrier
✓ Guaranteed to fit PY3PNA042090NB — or your money back. Terms

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier Flame Sensor (48GS400192) for Model PY3PNA042090NB

This is the genuine OEM Carrier flame sensor, part number 48GS400192, factory-specified for the Carrier PY3PNA042090NB gas furnace. The flame sensor is a critical safety component: after the hot surface igniter lights the burners, this rod-style sensor uses flame rectification to confirm combustion is present. If the control board doesn't receive a valid microamp signal within seconds, it shuts off the gas valve as a safety measure. A failed or carbon-coated flame sensor is one of the most common causes of furnace short-cycling — the furnace fires up, runs for 5–8 seconds, then shuts down and locks out.

  • Specs: 90° angled sensing rod | Includes factory mounting bracket | Replacement OEM part number 48GS400192 | Flame rectification detection method | Approximate rod length 1.6" | Overall dimensions approx. 4.9" × 1.75"
  • OEM vs Generic: This is a genuine Carrier OEM part, not an aftermarket substitute. OEM sensors maintain precise microamp output tolerances required by the Carrier IFC control board. Generic sensors can produce inconsistent readings, triggering nuisance lockouts or failing prematurely.
  • Install Difficulty: 2/5 — Straightforward swap. Turn off gas and power at the disconnect before starting. Tools needed: 1/4" hex driver or nut driver, needle-nose pliers. Disconnect the single wire connector, remove the mounting screw, swap the sensor, and reconnect. Always clean the burner port area and inspect the wire harness for heat damage while you have access.
  • Warranty: 1-year OEM manufacturer warranty against defects. Ships same business day from our warehouse in original factory packaging.

Compatibility: Designed for the Carrier PY3PNA042090NB gas furnace. Always verify your model and serial number on the data plate inside the furnace door before ordering. Need help confirming fitment? Our HVAC parts specialists are standing by — order with confidence and get it shipped today.

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 PY3PNA042090NB?
Yes. This is the factory-specified OEM flame sensor for the Carrier PY3PNA042090NB. 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 PY3PNA042090NB?
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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