It does not feature a thermometer window or a setpoint dial opening

reset occurs once the temperature drops 35°F below the limit

An E250 code typically indicates an open limit or rollout circuit

such as a cracked heat exchanger

Honeywell 14004236-001 Coupler It does not feature aThe Honeywell 14004236 001 Coupler is a critical mechanical interface designed for MP918 Series pneumatic damper actuators. Engineered to facilitate a precise connection between the actuator shaft and a 5 16 inch pushrod, this high grade pushrod adapter ensures reliable torque transfer and linear motion in commercial HVAC air handling systems. As a veteran grade actuator shaft coupler, it is purpose built to withstand the mechanical stresses of