What causes a 24V transformer like the S1-025-30889-000 to fail

Designed to create long-lasting bubbles

Technical Benefits for Professionals

making it ideal for R410A high-pressure cutout applications

York S1-3120A3571 Sequencer What causes a 24V transformerThe York S1 3120A3571 Sequencer is a critical multi stage control component designed for 20 23 KW electric furnaces and high output residential HVAC systems. As a genuine OEM York replacement part, this assembly utilizes a 24V coil to manage the staged activation of up to four heating elements, preventing dangerous current spikes and nuisance breaker trips during initial startup. This electric furnace sequencer relay features four sets of normally