Verify that the thermopile is generating at least 350 mV (open circuit) and that the status light is blinking

its germicidal effectiveness significantly degrades after 9

While these are factory-calibrated

The York S1-324-40880-002 is a professional-grade

These genuine Carrier air cleaner parts are built to withstand the high-voltage environment of electronic air purification systems without degrading or losing structural integrity

Heat Controller 12100102000001 Blower Wheel 320074-702 Verify that the thermopile isThe Heat Controller 12100102000001 Blower Wheel is a precision engineered centrifugal fan component designed for high static pressure applications within commercial and industrial HVAC systems. This OEM replacement blower wheel is critical for restoring factory spec airflow in Heat Controller air handlers and packaged units. Constructed with heavy duty galvanized steel or aluminum, it features balanced housing and blades to minimize vibration and