Maintaining a reliable standing pilot ignition system requires components that can withstand constant thermal stress while delivering precise millivolt output

ensuring zero downtime during installation on existing TP970 thermostats

maintaining the factory-specified seal between the flue collector plate and the heat exchanger

If the internal magnets are intact but the agitator assembly wobbles

Nordyne 626338R Limit Switch Maintaining a reliable standing pilotThe Nordyne 626338R Limit Switch is a mission critical OEM safety component engineered for precision thermal monitoring in Intertherm, Miller, and Nordyne gas and electric furnaces. As a primary high limit control, this L150 40F limit switch is designed to protect the heat exchanger from damage and prevent hazardous operating conditions. The switch utilizes a snap disc mechanism that is factory calibrated to cut power to the gas valve or heating