Description
The Lochinvar & A.O. Smith 100279407 is an OEM replacement rear flame sensor supplied complete with a gasket for a leak-free, secure installation. Flame sensors are a critical combustion safety component in boilers and water heaters — they confirm the presence of a burner flame and signal the control board to keep the gas valve open. A failed or fouled flame sensor can cause nuisance lockouts, short-cycling, and no-heat calls, making this a high-priority service part for any technician working on Lochinvar or A.O. Smith equipment.
Key Features
- OEM replacement rear flame sensor designed for Lochinvar and A.O. Smith boilers and water heaters
- Includes gasket for a proper, sealed installation at the combustion chamber
- Rear-mount configuration for straightforward access and replacement
- Restores accurate flame-detection signal to the appliance control board
- Helps eliminate nuisance lockouts caused by a degraded or failed sensor
- Direct OEM part number cross-reference ensures correct fit and function
Application
- Compatible with select Lochinvar and A.O. Smith boilers and water heaters requiring a rear flame sensor
- Verify compatibility using the OEM part number 100279407 against your equipment’s parts list or service manual
Installation Notes
Always de-energize the appliance and allow the combustion chamber to cool before servicing. Use the supplied gasket to ensure a proper seal at the sensor port. After installation, cycle the unit and verify normal flame-sensing operation through the control board’s status indicators.
Reviews
There are no reviews yet.