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Lennox

OEM Lennox Flame Sensor Kit — Y5352 (DKVLT-050/075/100)

SKU: LNX-Y5352 Brand: Lennox
$19.95 $26.95

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Texas CMBL #19328542014
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The genuine OEM Lennox Y5352 flame sensor kit is designed for wall-mounted DKVLT-050, DKVLT-075, and DKVLT-100 condensing gas boilers. This flame-rectification sensor confirms the presence of a stable burner flame and signals the control board to keep the gas valve open — a critical safety function that shuts the boiler down if flame is lost, preventing raw gas from accumulating.

Common failure symptoms: the boiler ignites and then locks out after a few seconds, intermittent flame-failure fault codes, repeated ignition retries, or a unit that won't stay lit. A carbon-coated, corroded, or cracked sensor rod loses its ability to conduct the microamp flame signal and triggers these nuisance shutdowns.

Why OEM matters: flame sensing depends on precise rod length, ceramic insulator integrity, and correct positioning within the flame envelope. The OEM Y5352 is built to Lennox specifications so the flame current stays within the control's detection window, ensuring reliable ignition and code-compliant safe operation of your condensing boiler.

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 — Y5352 (DKVLT-050/075/100)?
Yes. This is the factory-specified OEM flame sensor for the Lennox OEM Lennox Flame Sensor Kit — Y5352 (DKVLT-050/075/100). 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 — Y5352 (DKVLT-050/075/100)?
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
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