ClimaTek S1-3115-3571 Heat Sequencer Relay – Replacement for Coleman, Goodman, Nordyne

Overview

The ClimaTek S1-3115-3571 heat sequencing relay is a brand-new replacement component designed to fit a range of furnace models that rely on a sequencing relay in the heat call path. It provides a dependable substitute when the original part shows signs of wear or intermittent operation, focusing on reliable sequencing of heat calls to help maintain consistent furnace cycling.

Key benefits at a glance

• Direct compatibility with multiple part numbers including S1-3115-357, S1-3400-357, B12565-53, B12565-58, and 621678.
• Plug-and-play design that minimizes the need for wiring modifications during replacement.
• Rugged construction built for demanding furnace environments and long-term performance.
• Broad brand compatibility spanning Coleman, Evcon, Goodman, Janitrol, Nordyne, Intertherm, Carrier, Bryant, and more.

Compatibility and installation

Engineered as a direct replacement, this relay aligns with common furnace control architectures without requiring electrical or hardware modifications. The compact module slots into place to restore the sequencing rhythm that drives the heating cycle.

To install, ensure power is off, disconnect the original relay, and seat the ClimaTek unit in the same orientation. If you’re replacing multiple components at once, plan for a safe, methodical approach to prevent miswiring.

Real-world use possibilities

In many homes, a failed sequencing relay can lead to uneven heat or incomplete heat calls. Replacing with a known-brand option like ClimaTek offers a practical path to reestablish consistent furnace operation. This part provides a practical substitute that may help your system function smoothly as older equipment ages.

What you get

• 1x ClimaTek heat sequencing relay S1-3115-3571
• Direct replacement for listed part numbers and compatible brands