If the circuit remains open when cool

providing superior capture of microscopic contaminants including pollen

while LED indicators provide immediate visual confirmation of relay activation and current trip status

while listed under Utica-Dunkirk

Reznor 221388 Timer 30067439-890 If the circuit remains openReliable ignition and combustion cycles in HVAC equipment rely on precise sequencing, making the Reznor 221388 Timer a critical OEM component for professional service calls. This 10 second timer delay relay is engineered specifically for Reznor heating units to manage the timing of electrical circuits, ensuring that blowers or burners engage and disengage at the exact intervals required for safe operation. Built to meet the rigid Reznor factory