7 degree F Fixed Differential

The manual reset (M/R) configuration requires a technician to physically inspect the system for airflow obstructions or combustion issues before restoring operation

The module enters lockout if a flame is not sensed within the three-try ignition sequence or if the flame signal is lost and cannot be re-established during the subsequent trials

also designated as model 740-1-40

This food-grade silicone bowl gasket ensures a vacuum-tight seal between the evaporator unit and the polycarbonate bowl

Aaon ASM01668 Controller 30067439-890 7 degree F Fixed DifferentialThe Aaon ASM01668 MODGAS X Controller is a high performance HVAC control module designed to provide precision modulation for gas heating systems. Engineered as the direct replacement for Aaon V12090, this electronic controller ensures seamless integration into existing commercial HVAC rooftop units. By utilizing advanced microprocessor based control, the ASM01668 optimizes burner efficiency and temperature stability, reducing energy consumption and