Description
Product Summary
The A. O. Smith 100109221 is an igniter / flame sensor from A. O. Smith, described by the manufacturer as: piezo kit with Igniter/Bracket 9003410015.
Igniters, flame sensors, pilots and thermocouples handle the lighting and flame-proving side of a gas or oil burner. The igniter or pilot lights the gas, and the flame sensor, thermocouple or thermopile tells the control that flame is present. A cracked or weak igniter, a sooty pilot, or a flame sensor with a low microamp reading are common reasons a burner lights and then shuts off or never lights at all.
Before you order, match 100109221 to the part number on the part you are replacing or in your equipment's repair parts list, and confirm the voltage, size and connections match your equipment. If you are not sure which part your equipment needs, call us at 1.888.509.3391 with the model and serial number and we will confirm it for you.
Key Features
- Genuine A. O. Smith part: Manufacturer part number 100109221, factory new.
- Part type: Igniter / Flame Sensor.
- Ready to ship: In stock with live quantities shown on this page.
Frequently Asked Questions
Is this a genuine A. O. Smith part?
Yes. This is the A. O. Smith 100109221, a factory-new igniter / flame sensor from A. O. Smith.
How do I make sure it fits my equipment?
Compare 100109221 with the part number printed on the part you are replacing or listed in your equipment's repair parts list, and confirm the voltage and connections match. If you are not sure, call us at 1.888.509.3391 with your model and serial number and we will confirm it.
Can I clean a flame sensor instead of replacing it?
Often, yes. Cleaning the rod restores the signal in many cases. Replace it if the porcelain is cracked or the signal stays low after cleaning and checking the ground.
Should a professional install this part?
Yes. Gas, electrical, hydronic and combustion components should be installed by a qualified technician who can test the system afterward and follow the codes that apply where you live.
