and 150 Series controls

How do I resolve a high-limit trip on this unit

This indicates a 170°F opening temperature (high limit) with a 40°F differential

Key Benefits System Continuity: Allows for control bulb replacement or maintenance without draining the boiler or closed-loop system

technicians can minimize downtime and ensure the long-term operational integrity of commercial and residential heating systems without the risk of compatibility issues often found with generic alternatives

Reznor 125342 Ventor Assembly Refrigerant and 150 Series controlsTo ensure peak combustion efficiency and safe exhaust drafting, the Reznor 125342 Ventor Assembly remains the industry standard induced draft solution for commercial gas fired unit heaters. This genuine OEM assembly is specifically engineered for the Reznor SC100 300 series, delivering the precise static pressure required to pull combustion air through the heat exchanger. Operating on a 115V venter motor, this complete kit includes a factory balanced