Lifetime Warranty
[Lifetime Warranty] 69W43 Furnace Flame Sensor
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$17.16
Regular price
$19.22
Sale price
$17.16
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CONFIRM THE FIT FOR YOUR MODEL
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69W43 Furnace Flame Sensor
Key Features
- Sensing rod detects flame presence for furnace operation
- Angled probe design
- Overall width: 4-5/8 in
- Features a 3/16 in male terminal for connection
- Durable construction for long service life
Replaces / Cross-Reference Part Numbers
- 69W4301
- LB-74940B
- 10-6840
Compatibility & Fitment
- Direct replacement for specific furnace models from brands including:
- Armstrong
- Ducane
- Lennox
- Verify compatibility with your furnace model number prior to purchase.
When to Replace
- Furnace starts the ignition sequence but shuts off after a few seconds.
- Furnace control board indicates a flame sensor fault code.
- Visible carbon buildup, corrosion, or damage on the existing sensor rod.
- The ceramic insulator is cracked or broken.
Installation Tips
- Disconnect electrical power to the furnace unit before servicing.
- Avoid touching the metal rod with bare hands; handle by the ceramic base.
- Ensure the sensor is correctly positioned in the pilot or main burner flame.
- Confirm the mounting screw and wire are securely fastened.
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WIDE COMPATIBILITY
Replaces Part Numbers 69W43, 69W4301, LB-74940B, LB74940B Compatible with specific Furnace of Lennox | Armstrong | Ducane -
FIX FURNACE'S SYMPTOMS
Short cycling | No heat or inconsistent heating | Delayed ignition | Error codes | Dirty flame sensor rod | Cracked ceramic insulator -
EFFECTIVE SOLUTION
Enjoy the great feeling when your furnace works properly like before - BlueStars brings DIY solutions to help you deal with any trouble -
IMPORTANT NOTE
This is a replacement part designed to be compatible with certain appliances. Any brand names mentioned are used solely to indicate compatibility.
LONG-LASTING SOLUTION
Made of high-grade wear-resistant Metal and Ceramics, ensuring durability and resilience against temperature changes
PRECISION FLAME DETECTION
Ensure home's safety by automatically shutting off the furnace whenever no flame is detected inside, preventing gas leaks
6 SIMPLE STEPS TO INSTALL
1. Turn off furnace power, close gas valve, and remove the front panel; 2. Disconnect the wire from the old sensor; 3. Unthread the mounting screw; 4.Slide the old sensor out; 5. Install the new one, secure it into place, and reconnect wire; 6. Reattach the panel, open gas valve and turn power back on