Functional Devices RIBM2401D Relay The blower door safety switch

The blower door safety switch is a furnace door interlock that prevents the system from running if the blower compartment door is not properly secured

the 93973 natural gas orifice is likely restricted by debris or carbon buildup

Does this heater run continuously

5 CFH for natural gas) as dictated by national fuel gas codes

Veteran technicians prioritize this thermal protection switch to resolve furnace short cycling and prevent dangerous high-temperature excursions

Functional Devices RIBM2401D Relay The blower door safety switchThe Functional Devices RIBM2401D is a professional grade 10 Amp DPDT relay engineered for versatile BAS and HVACR control applications. Designed for rapid installation, this 4 inch track mount relay integrates a high performance DPDT continuous duty coil that accepts multiple input voltages, including 24 Vac dc and 120 Vac. The dual pole double throw configuration provides two independent sets of contacts, making it ideal for simultaneous switching of