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Lennox

OEM Lennox Flame Sensor Kit — Y5353 (DKVLT-150/200)

SKU: LNX-Y5353 Brand: Lennox
$19.95 $26.95

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

The genuine OEM Lennox Y5353 flame sensor kit is engineered for wall-mounted DKVLT-150 and DKVLT-200 condensing gas boilers. As a flame-rectification device, it verifies that the burner has established a stable flame and continuously reports that signal to the boiler control, which keeps the gas valve energized only while a valid flame is detected. If the flame is lost, the sensor forces an immediate safe shutdown.

Common failure symptoms: ignition followed by a rapid lockout, flame-loss or flame-failure error codes, multiple failed ignition attempts, or a boiler that cycles on and off without reaching temperature. Oxidation, soot buildup, or a hairline crack in the sensor rod weakens the flame signal and produces these faults.

Why OEM matters: the larger DKVLT-150/200 burners require a sensor with the exact rod geometry and insulator rating this model provides. The OEM Y5353 restores the correct flame-current range so your Lennox boiler ignites dependably and satisfies its built-in flame-safety logic — protection generic parts can compromise.

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 Lennox OEM Lennox Flame Sensor Kit — Y5353 (DKVLT-150/200)?
Yes. This is the factory-specified OEM flame sensor for the Lennox OEM Lennox Flame Sensor Kit — Y5353 (DKVLT-150/200). 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 Lennox OEM Lennox Flame Sensor Kit — Y5353 (DKVLT-150/200)?
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 Lennox 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 Lennox 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
HVAC Parts Specialist — Online