Furnace Flame Sensor Universal For: 02527773700, 2527773700, S1-025-25434-700

Furnace Flame Sensor Universal For: 02527773700, 2527773700, S1-025-25434-700

Safety first: Shut off electrical power to the furnace before servicing, and shut off the gas supply when applicable. Gas and combustion work should be performed by a qualified technician.

Restore reliable ignition monitoring with this ERP replacement furnace flame sensor. The flame sensor confirms that the burners have lit; when it becomes coated with silica or fails, the control board shuts the gas off within seconds and the furnace locks out. This sensor is a direct replacement for the listed part numbers. Verify the exact part number, dimensions, connector arrangement, and complete appliance model before ordering.

Product Details

• SKU: ER2527773700
• UPC: 840993022531
• Country of origin: China

Compatible Part Numbers

• 02527773700
• 2527773700
• S1-025-25434-700

Key Features

• Direct replacement: Replaces the listed furnace flame sensor part numbers.
• Flame proving: Confirms burner ignition so the control board keeps the gas valve open.
• Durable build: High-temperature flame rod with ceramic insulator for dependable sensing.
• Easy installation: Simple mounting screw and quick-connect terminal swap.

Fixes These Symptoms

• Furnace burners ignite but shut off after a few seconds
• Furnace short cycles or locks out with a flashing status light
• Furnace fails to stay lit or produces no heat

Compatible Brands

Universal is the catalog label used when no specific compatible brand is confirmed. It does not mean this part fits every appliance, brand, or model. Verify the exact part number, ratings, dimensions, and appliance model before purchase.

Compatible Models

Fits various models. Please verify compatibility with us before ordering

Installation Instructions

1. Shut off electrical power to the furnace, and shut off the gas supply when applicable.
2. Confirm the appliance model, original part number, sensor length, and connector type.
3. Remove the mounting screw and old sensor, then clean the mounting surface.
4. Install the new sensor without touching the rod, reconnect the terminal, and secure the mounting screw.
5. Restore power and gas, then run a full heating cycle and verify the burners stay lit.

Use a qualified HVAC technician for gas connections and combustion safety checks.

For appliance cleaning products, visit affresh appliance cleaning products.

Safety Disclosure

Prop 65 Warning: Cancer and Reproductive Harm – www.P65Warnings.ca.gov