2 Packs 025-37499-000 Gas Furnace Flame Sensor

Key Features

• Package contains two (2) flame sensors.
• Detects the presence of flame in the burner assembly.
• Signals the furnace control to shut off the gas valve if no flame is detected, preventing unburnt gas accumulation.
• Constructed from durable, high-temperature resistant materials for longevity.
• Direct-fit replacement for specified models.

Replaces / Cross-Reference Part Numbers

• 025-37499-000
• 1-025-37499-000
• S1-025-37499-000

Compatibility & Fitment

• Fits select gas furnace models from brands including York, Luxaire, and Coleman.
• Confirmed fit for models such as CP9C080812MP12C, CP9C080B12MP11, CP9C080B12MP12C, CP9C080C16MP12C, ACS90453BXA, and ACS90703BXA.
• Verify compatibility by checking your furnace's original part number or service manual.

When to Replace

• Furnace ignites but shuts down after a few seconds.
• Main burners fail to remain lit during the heating cycle.
• Visible carbon buildup, corrosion, or pitting on the sensor's metal rod.
• Cracked or damaged porcelain insulator.

Installation Tips

• Disconnect all electrical power to the furnace before servicing.
• Locate the flame sensor, typically mounted with a single screw near the last burner in the ignition sequence.
• Remove the mounting screw and disconnect the single wire.
• Handle the new sensor by its ceramic base; avoid touching the metal rod with bare hands as skin oils can damage it.
• Install the new sensor, ensuring it is correctly positioned in the flame path.
• Reconnect the wire, restore power, and test the furnace for proper operation.