01-0841 Nordyne Heat Sequencer

Overview

The Nordyne 01‑0841 is an OEM heat sequencer used in Intertherm, Miller, and Nordyne electric furnaces. It controls staged heating element activation, preventing high inrush current and ensuring safe, reliable warm‑up and cool‑down cycles.

• When the 24V coil is energized, the top two switches (M5/M6 & M7/M8) close after 30–90 seconds.

This timing profile is used across many Nordyne electric furnace models.

Key Features

• OEM Nordyne / Nortek heat sequencer

• 30–90 second ON delay (confirmed)

• Multi‑switch staging for heat strips

• Prevents breaker trips and overheating

• Compatible with Intertherm, Miller, and Nordyne electric furnaces

• Direct replacement for systems requiring 01‑0841 timing

Common Symptoms Requiring Replacement

• Heat strips not energizing

• Furnace blowing cold air

• Heat strips staying on continuously

• Breaker tripping during heat operation

• Burnt or welded sequencer contacts

2 pole replacement sequencer. H30-90 on, C1-30 off. When the 24V coil is energized at the bottom terminals labeled H, the top two switches (ie poles)labeled M5/M6 & M7/M8 close in 30-90 seconds. When 24V power is cut to the bottom terminals, the top switches open in 1-30 seconds. Replaces 621381 & 6213810.