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it prevents hazardous operation by breaking the circuit if the flue becomes obstructed or the inducer fan fails to reach the required RPMs during either stage of the heating cycle
Always identify the root cause of the high-limit trip before resuming operation
and Comfortmaker product lines
When replacing older 3-wire or 5-wire models
and thermostat wells where precise temperature sensing and heat dissipation are non-negotiable for system stability
Utica-Dunkirk 40154B012 Control Limit R-407A it prevents hazardous operation byThe Utica Dunkirk 40154B012 Control Limit is a specialized thermal high limit safety component engineered for precise temperature management within residential and commercial hydronic heating systems. Specifically listed as the CTRL LMT TI 250 220 2111, this limit control is designed to monitor and regulate the maximum allowable boiler water temperature, effectively preventing overheating and potential system damage. For technicians working with