5A) may match

causing the temperature to hit the 170°F limit

What causes these ignition modules to fail prematurely

ensuring stable pressure control in the system

Honeywell MS4104F1010 Actuator 30067439-890 5A) may matchThe Honeywell MS4104F1010 is a high performance Fast Acting Two Position Actuator engineered specifically for fire and smoke damper applications. Designed as a direct coupled actuator (DCA), it provides 30 lb in of torque and is fully compliant with UL555 and UL555S standards for operation in temperatures up to 350F. This 120 Vac spring return actuator utilizes a reliable SPST control signal, ensuring the damper returns to its fail safe position