Robertshaw 803A Cooling Stat 321042-401 instantly interrupting the gas valve

instantly interrupting the gas valve circuit if airflow obstructions or blower failures cause internal temperatures to exceed safe operational parameters

or the system failing to modulate water temperature despite dropping outdoor temperatures

preventing premature dielectric breakdown

Advanced ECM Efficiency: Utilizes X13 constant torque technology to reduce energy consumption compared to standard PSC motors

or an inability to sustain the second heating stage

Robertshaw 803A Cooling Stat 321042-401 instantly interrupting the gas valveThe Robertshaw 803A is a commercial grade line voltage cooling thermostat engineered for high performance temperature regulation in single pole applications. This SPST cooling thermostat is the direct field replacement for the legacy 803 model, featuring a bimetal sensing element for rapid thermal response without the need for mercury. Designed for versatile HVAC line voltage control, it supports 120V, 240V, and 277V AC circuits, making it a standard