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Lochinvar & A.O. Smith 100165921 Flame Sensor

Special Price $54.04 Regular Price $62.15
In stock
SKU
100165921
The Lochinvar & A.O. Smith 100165921 is a Flame Sensor that is needed and allows to control of the gas-fired water heaters and boilers to prevent fire. It checks the presence of a flame during the combustion process to enable proper working of this system besides checking on the leakage of the gas. Should the flame be extinguished, the sensor alerts the control module to turn off the flow of gas making the system safe. Sturdy and built to be long-lasting, it assists in keeping warm at the temperature it needs often preventing accidents. Advantages are enhanced safety, enhanced energy efficiency, and extended life of equipment making it a standard feature in heating, air conditioning, and ventilation for residential and or commercial use.
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Specifications

  • Type: Flame Electronic Sensor
  • Dimensions: 5.5" x 1.2" x 0.6"
Manufacturer Name: Lochinvar & A.O. Smith
Product Number: 100165921
OEM Part Number: 100165921
Product Description: Flame Sensor
Weight:0.05lbs/22.68g

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Customer Questions
What maintenance is required for the Lochinvar & A.O. Smith 100165921 Flame Sensor?

Ensure the sensor probe remains free of oxidation or residue that can interfere with flame detection. Periodically confirm proper grounding and secure wiring connections. Replace carefully to maintain correct positioning in the flame path. Always shut off the gas and electrical supply before performing any servicing tasks.

What are common issues with the Lochinvar & A.O. Smith 100165921 Flame Sensor?

  • Flame signal loss triggering system lockout.
  • Sensor contamination reducing detection accuracy.
  • Weak or unstable readings affecting ignition cycle.
  • Poor grounding causing intermittent faults.
  • Burner shutdown despite active flame presence.

Installation Steps

Step 1: Switch off system power and shut gas supply before starting.

Step 2: Allow burner area to cool fully before opening access panel.

Step 3: Place and disconnect the existing flame sensor wiring carefully.

Step 4: Remove mounting screw and take out the old sensor.

Step 5: Clean the mounting area to ensure proper contact.

Step 6: Position the new flame sensor in the same orientation.

Step 7: Secure it firmly and reconnect the wiring.

Step 8: Close panel, restore gas and power, then confirm flame detection operation.