Aaon R51280 Limit Switch 320788-703 this flame rod detects the

this flame rod detects the presence of ions within the flame

Inspect the stainless steel probes for scale buildup or rust

this low pressure switch is designed to interrupt the electrical signal to the contactor if system pressure drops below a safe threshold

Can this filter drier be installed in the liquid line

Whether integrated into a new furnace build or used as a critical replacement part

Aaon R51280 Limit Switch 320788-703 this flame rod detects theThe Aaon R51280 Limit Switch is a critical safety component engineered for precision temperature monitoring in high performance HVAC systems. This 3 inch L195 30F limit switch features a fixed temperature setting designed to open the electrical circuit at 195F and automatically reset when temperatures drop by 30F. As a vital HVAC high limit control, it prevents equipment overheating by interrupting power to the heat source if airflow is restricted or