We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
SUPCO FLS301 flame sensor with 90 degree 3 in probe

SUPCO

SUPCO FLS301 Flame Sensor 3 in 90 Degree Probe

SKU CH-V2M3-H1G29

A 3-inch, 90-degree universal flame sensor for direct-spark HVAC systems using LP or natural gas

  • Universal replacement for Packard and Rheem systems
  • 90-degree probe angle fits tight burner compartments
  • 3-inch probe length reaches flame zone reliably
  • Withstands 1800°F rod temperature for long service life
  • Works with LP and natural gas fuel types

Direct-Spark Flame Sensor

The SUPCO FLS301 is a universal replacement flame sensor designed for direct-spark ignition systems in LP and natural-gas HVAC equipment. It mounts via a fixed stud bracket and features a 90-degree probe tip that reaches three inches into the burner assembly.

Stud-Mount Installation

Installation consists of securing the sensor to the existing stud mount and routing the hardwired lead to the control board. The fixed bracket cannot be repositioned, so the probe must align with the flame path without adjustment. Misalignment is the most common cause of nuisance lockouts after replacement.

High-Temperature Operation

The probe rod is rated to withstand 1,800 degrees Fahrenheit during continuous burner operation. Under sustained load the sensor maintains a stable microamp signal to the ignition control, preventing safety shutdowns that can occur when a degraded rod drops below the detection threshold.

Highlights

  • Universal replacement for Packard and Rheem systems
  • 90-degree probe angle fits tight burner compartments
  • 3-inch probe length reaches flame zone reliably
  • Withstands 1800°F rod temperature for long service life
  • Works with LP and natural gas fuel types

Specifications

BrandSUPCO

Questions about this item

How can I confirm the SUPCO FLS301 is working after installation?

The furnace should ignite and maintain a steady flame without lockout; a microamp reading on the sensor rod confirms proper flame rectification.

What comes with the SUPCO FLS301 and what must I source separately?

The sensor includes a fixed bracket with 90-degree, 3 in probe and stud mount; you must supply mounting hardware and hardwire leads.

Which SUPCO FLS301 version suits a Packard or Rheem unit using part 62-25343-01?

This FLS301 replaces Packard and Rheem part 62-25343-01 and PFS301 for LP or natural gas direct spark ignition systems.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.