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SUPCO FLS700 flame sensor with 3 inch straight probe and fixed bracket

SUPCO

SUPCO FLS700 Flame Sensor 3 in Probe Fixed Bracket LP/NG

SKU CH-WTSH-8JZKB

Universal replacement flame sensor with a 3-inch straight probe, fixed bracket and stud mount for direct spark ignition systems on LP or natural gas HVAC equipment

  • Universal replacement for direct-spark systems
  • Fixed bracket with straight 3 in probe for easy mounting
  • Hardwired connection ensures reliable signal to control board
  • Withstands 1800 Degrees F rod temperature for long service
  • Compatible with ICP and York models 025-27773-700 and 1380679

Universal Replacement Flame Sensor

The SUPCO FLS700 is a universal replacement flame sensor designed for HVAC systems using direct spark ignition. It serves technicians and maintenance teams who need a compatible part for ICP or York equipment running on LP or natural gas. The fixed bracket and straight probe tip simplify installation on existing stud mounts. This component restores flame detection without requiring system redesign.

Sustained High-Temperature Operation

The probe withstands a maximum rod temperature of 1,800 degrees F during continuous burner cycles. Hardwired electrical connection maintains signal integrity under prolonged heat exposure. Fixed bracket construction prevents positional drift that could interrupt the flame signal over time. Reliable performance depends on the sensor remaining clean and properly positioned in the flame path.

Direct Spark Ignition Compatibility Limits

This sensor functions only with direct spark ignition systems and cannot support hot surface or intermittent pilot configurations. Compatibility is limited to the listed manufacturer model numbers including 025-27773-700 and 1380679. The three-inch probe length and stud mounting pattern restrict use to equipment with matching geometry. Fuel type is limited to LP and natural gas applications.

Highlights

  • Universal replacement for direct-spark systems
  • Fixed bracket with straight 3 in probe for easy mounting
  • Hardwired connection ensures reliable signal to control board
  • Withstands 1800 Degrees F rod temperature for long service
  • Compatible with ICP and York models 025-27773-700 and 1380679

Specifications

BrandSUPCO

Questions about this item

Does the 3 in probe overheat during continuous LP/NG furnace cycles?

The rod is rated to 1,800 degrees F, well above normal flame temperatures, so it tolerates all-day operation without degradation.

Which ignition system must my furnace already use for this sensor to function?

It requires a Direct Spark Ignition system; standing-pilot or hot-surface units will not work with this replacement.

Will the fixed bracket and stud mount fit my existing ICP or York burner assembly?

Yes, the fixed bracket and stud mount match ICP and York models 025-27773-700 and 1380679 for direct replacement.

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