replacing obsolete switches 68266 and 125133

preventing system cycling issues and ensuring thermal consistency

What causes these blowers to fail

If the circuit stays open when the furnace is cool

the "/U" suffix simply denotes a "Universal" retail-packaged version of the same Honeywell HVAC part

Reznor 270474 Light 321894-706 replacing obsolete switches 68266 andThe Reznor 270474 is a professional grade 24V red indicator light designed for precise status monitoring in commercial and industrial HVAC systems. Engineered for a 12. 7 mm mounting hole (approximately 1 2 inch), this industrial pilot light provides immediate visual feedback for system diagnostics, lockout conditions, or heater operation. This specific HVAC indicator lamp is a factory authorized replacement part, ensuring electrical compatibility