Schneider Electric (Barber Colman) MK-4421 Actuator R-410A a different 80-series model is

a different 80-series model is required

it is the standard replacement for many Coleman and Luxaire mobile home and residential gas furnaces

Automatic Reset Functionality: Minimizes downtime by automatically restoring the SPDT circuit once pressure returns to safe operating levels

Real-Time Diagnostics: High-visibility LED indicators allow for rapid system inspections and verification of airflow logic

the Carrier HH98AA010 is a primary suspect for failing to close the safety circuit

Schneider Electric (Barber Colman) MK-4421 Actuator R-410A a different 80-series model isThe Schneider Electric (Barber Colman) MK 4421 is a heavy duty pneumatic damper actuator engineered for proportional or two position control in demanding HVACR applications. This spring return actuator is the designated direct replacement for M593 5095 and M693 5095 models, ensuring seamless integration into existing Barber Colman pneumatic control systems. Featuring a rugged cast aluminum housing and a durable neoprene diaphragm, the MK 4421 provides