Description
Lochinvar & A.O. Smith 100330341 Flame Sensor with Gasket
Keep your Lochinvar or A.O. Smith heating equipment operating safely and efficiently with this genuine OEM replacement flame sensor. Part number 100330341 includes the flame sensor and a matching gasket, ensuring a complete, leak-free installation right out of the box.
Product Overview
The flame sensor is a critical safety component in gas-fired heating systems. It detects the presence of a burner flame via the principle of flame rectification, sending a signal to the control board to confirm ignition. If the sensor becomes fouled or fails, the system will lock out as a safety precaution. Replacing it with the correct OEM part restores reliable flame detection and prevents nuisance lockouts.
Key Features
- OEM replacement part — designed specifically for compatible Lochinvar and A.O. Smith appliances
- Includes matching gasket for a complete, sealed installation
- Restores accurate flame rectification signal to the control board
- Helps prevent nuisance burner lockouts caused by a faulty or contaminated sensor
- Direct drop-in replacement — no modifications required
- Supports safe, code-compliant system operation
Application
This flame sensor is intended for use in compatible Lochinvar and A.O. Smith gas-fired water heaters and boilers. Always verify compatibility with your specific model before installation.
Installation Notes
- Disconnect power and gas supply before servicing
- Replace the gasket included with this kit to ensure a proper seal
- Inspect wiring harness and connector for damage during replacement
- Consult the equipment service manual for torque specifications and wiring details







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