Universal Furnace Flame Sensor FLS69W43 69W43

Universal Furnace Flame Sensor — FLS69W43

The ERP FLS69W43 is an aftermarket furnace flame sensor for selected heating applications. It helps the furnace control verify burner flame when the sensor specifications and fit match. A failed, contaminated, or damaged sensor can contribute to ignition lockout, no-heat symptoms, or repeated start attempts. Verify the original sensor, ignition system, dimensions, terminal, and complete furnace model before ordering.

ERP aftermarket replacement: This is not a genuine appliance-brand part and is not affiliated with any appliance manufacturer.

Compatible Part Numbers

• FLS69W43
• 69W43

Key Features

• Replacement fit: Use when the original flame sensor specifications and mounting match.
• Primary function: Helps the furnace control verify burner flame.
• Key benefit: Helps restore reliable flame proving when the original sensor fails.
• Universal specification: No specific compatible brand has been confirmed; verify the ignition system, dimensions, terminal, and appliance model before purchase.

Fixes These Symptoms

• Furnace ignites but shuts down shortly afterward
• Furnace enters ignition lockout or produces no heat
• Repeated ignition attempts or short cycling
• Flame sensor is damaged, contaminated, or corroded

Compatible Brands

• Universal catalog listing; verify the exact furnace and ignition configuration

Compatible Models

Fits various models. Please verify compatibility with us before ordering.

Always verify your model number before ordering. Match the original part number, ignition system, dimensions, terminal, and complete furnace model. Gas and combustion service must be performed by a qualified HVAC technician.