St. Croix Low Limit Fan Switch | 110°F Proof of Fire Snap Disc for Pellet & Corn Stoves | Part #80P20038-R / 20159

St. Croix Low Limit Fan Switch (80P20038-R / 20159) – 110°F Proof of Fire Snap Disc for Pellet & Corn Stoves

Ensure safe and reliable operation of your stove with the St. Croix Low Limit Fan Switch (80P20038-R / NBK 20159), also known as a Proof of Fire (P.O.F.) switch. This flush-mount, normally open snap disc switch closes when temperatures reach 110°F, triggering the blower system. It reopens at 90°F, preventing the blower from running when the stove is not producing adequate heat. Commonly mounted on the combustion blower housing, this switch is a critical safety and efficiency component in St. Croix pellet and corn stoves.

Key Features:

• Proof of Fire Functionality – Confirms ignition before enabling blower operation
• Low Limit Temperature Activation – Closes at 110°F, reopens at 90°F
• Flush Mount Snap Disc – Compact design for secure, space-saving installation
• OEM-Compatible – Replaces St. Croix part number 80P20038-R with equivalent NBK 20159
• Safe & Efficient – Ensures the fan only runs when the stove is actively heating

Specifications:

• Part Numbers: 80P20038-R, NBK 20159, F110-20F
• Switch Type: Snap disc, normally open
• Close Temperature: 110°F
• Open Temperature: 90°F (20°F differential)
• Mounting Style: Flush mount
• Application: Combustion blower / proof of fire switch
• OEM Status: Replacement for St. Croix original part

Compatible Models:

• Afton Bay
• Ashby-MF, Ashby-P
• Auburn
• Eclipse
• Element-MF, Element-P
• Greenfield
• Hastings
• Lancaster
• Lincoln SCR (Serial # 0–300)
• Lincoln SCS (Serial # 301 and above)
• Pepin
• Prescott EX, Prescott EXP, Prescott EXL
• Revolution
• SCF-050
• York Insert

Always confirm compatibility with your owner’s manual before ordering.

Pairs well with: St. Croix Parts

Why Choose This Proof of Fire Switch?

A faulty snap switch can cause blower malfunction, leading to poor heating performance or safety risks. The St. Croix Low Limit Fan Switch (80P20038-R / NBK 20159) restores proper fan control, ensuring your stove runs only when it’s safe and producing heat. Built with durable materials, it provides long-lasting performance in demanding heating environments.