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OEM Carrier Flame Sensor LH33WZ009A for LC350HE400816
Carrier

OEM Carrier Flame Sensor LH33WZ009A for LC350HE400816

SKU: CARRIE-LC350HE400816-FLAME_SENSOR-LH33WZ009A Brand: Carrier

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Texas CMBL #19328542014
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OEM Carrier Flame Sensor LH33WZ009A for Model LC350HE400816

This is the factory OEM flame sensor (part number LH33WZ009A) for the Carrier LC350HE400816 furnace. The flame sensor is a safety rod that detects the presence of a burner flame by passing a small electrical current through it. When the sensor's rod becomes coated with oxidation or carbon buildup, it can no longer reliably confirm ignition — causing the control board to cut gas flow as a safety measure. The result is a frustrating cycle: the furnace lights, runs for 5–8 seconds, then shuts off completely, often triggering a lockout fault code. Replacing the flame sensor is one of the most common and cost-effective furnace repairs.

  • Specs: OEM part number LH33WZ009A | Factory-matched rod diameter and mounting bracket | 1/4" female spade terminal | Stainless steel sensing rod with porcelain insulator
  • OEM vs Generic: This is the genuine Carrier factory part, ensuring correct rod geometry, insulator rating, and terminal fit. Generic sensors may have incorrect rod length or angle, leading to unreliable flame signal readings and repeat nuisance shutdowns.
  • Install Difficulty: 2/5 — Turn off power and gas before servicing. Tools needed: 1/4" or 5/16" hex driver, needle-nose pliers. Disconnect the single wire harness, remove the one mounting screw, swap the sensor, and reconnect. Avoid touching the rod with bare fingers — skin oils degrade the signal.
  • Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Designed specifically for the Carrier LC350HE400816 furnace. Verify part number LH33WZ009A against your unit's data plate or existing sensor before ordering. Our fitment team is available to confirm compatibility before you buy — don't let a $35 part keep your heat off another night.

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 $75
  • 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 LC350HE400816?
Yes. This is the factory-specified OEM flame sensor for the Carrier LC350HE400816. 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 LC350HE400816?
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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