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OEM Carrier Flame Sensor LH33WZ009A for LC350LC400676
Carrier

OEM Carrier Flame Sensor LH33WZ009A for LC350LC400676

SKU: CARRIE-LC350LC400676-FLAME_SENSOR-LH33WZ009A Brand: Carrier

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier Flame Sensor LH33WZ009A for Model LC350LC400676

This is the genuine OEM flame sensor (part number LH33WZ009A) factory-specified for the Carrier LC350LC400676 furnace. The flame sensor is a small but critical safety component — a metal rod that detects whether a flame is actually present after the gas valve opens. It passes a small electrical current through the burner flame; if no flame is sensed within seconds, the control board shuts down the gas valve to prevent unburned gas from accumulating. When the sensor fails or becomes coated with oxidation, the furnace will light briefly and then shut off after just 5 to 8 seconds, often repeating the ignition cycle two or three times before locking out entirely.

  • Specs: OEM part number LH33WZ009A | Factory-matched flame rod material and geometry | 1/4" male quick-connect terminal | Designed for Carrier single-stage gas furnaces
  • OEM vs Generic: OEM flame sensors use the exact rod alloy and mounting geometry specified by Carrier engineering. Generic alternatives may produce a weaker microamp signal, causing nuisance lockouts even after cleaning — particularly in low-ambient or humid conditions.
  • Install Difficulty: 2/5 — Turn off gas and power before beginning. Tools needed: 1/4" or 5/16" nut driver, fine steel wool or emery cloth (to clean rod if reusing), multimeter (to verify microamp draw post-install). Disconnect the single wire connector, remove the mounting screw, swap the sensor, and reconnect. Total job typically under 15 minutes.
  • Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before 3 PM local time.

Compatibility: Engineered specifically for the Carrier LC350LC400676 gas furnace. Verify your existing part number against LH33WZ009A on your unit's wiring diagram or parts label before ordering. If you're unsure of fitment, our HVAC parts specialists can confirm compatibility before you buy — same-day shipping means you won't lose another night of heat.

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 LC350LC400676?
Yes. This is the factory-specified OEM flame sensor for the Carrier LC350LC400676. 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 LC350LC400676?
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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