McDonnell & Miller FS1-17 Boiler Control SwitchMcDonnell & Miller FS1 17 is a dependable switch replacement designed for boilers and safety control systems. This FS1 17 replacement switch works with FS1, FS4 3, FS5, FS6, FS8 W, and AFE 1 304300 to ensure reliable operation across your equipment. Built for longevity and consistent performance, this OEM compatible part delivers precise switching and protects boiler operations from unexpected shutoffs. Engineered for easy installation and secure fit,

Its mounting is flexible for vertical/upright installations

The 0154F00003 part is easy to install for DIYers with basic HVAC knowledge and fits standard Goodman configurations that call for a 14" vent motor gasket

and reliable startup performance

Built with a rugged grommet design

Louvers-style grille promotes balanced airflow

8 A (locked rotor)

Lockout on air-flow prevents restart until safe air supply is restored

This rugged replacement boiler part is designed to replace L7148F1042 and 14662025

safety-forward design that helps maintain productive workspaces and comply with ventilation requirements

Operating Temp Range: -30 to 40°C

and a straightforward swap for parts 1172090 and 1186415

GMA-AL and GVD damper actuation for precise airflow control