Robertshaw 4200-025 Gas Thermostat 30067439-890 A steady red light typically

A steady red light typically signals internal control board failure

Replacement is required if the threads are damaged

the AL-190 serves as the direct replacement for AL-99 and AL-100 models

Featuring a 2-inch face and a dedicated On/Off indicator

This transducer is designed for utility meter pulse conversion of dry contact signals

Robertshaw 4200-025 Gas Thermostat 30067439-890 A steady red light typicallyThe Robertshaw 4200 025 Gas Thermostat is a heavy duty, high capacity commercial control designed for precision temperature management in professional kitchen environments. This FDO model thermostat operates within a 150F to 550F range, making it a versatile solution for commercial deck ovens, convection ranges, and fryers. Engineered for durability, it features a 54 inch nickel plated copper capillary and a 3 16" x 14 3 4" sensing bulb that ensures