Amana-Goodman B1256558 Sequencer

The Amana-Goodman B1256558 Sequencer is a critical replacement component designed for precise electric furnace control and heat pump auxiliary strip management. Engineered as a two-stack heat sequencer, this part features a 24V heater coil that initiates specific timings for staged heating elements. This staged activation prevents nuisance tripping of the main circuit breaker by managing the inrush current during the initial startup phase. The B1256558 is built for longevity in high-cycle applications, ensuring consistent fan-on and fan-off delays to optimize airflow temperature and system efficiency. As a genuine OEM replacement part, it guarantees exact fitment and terminal alignment for Goodman, Amana, and Janitrol air handlers. Technical specifications include a standard 1-20 second "on" timing and 40-110 second "off" timing across the M1-M2 and M3-M4 circuits, maintaining strict HVAC safety switch standards for residential forced-air systems.

• Precise Staging: Effectively manages electric heat element staging to reduce electrical load spikes.
• OEM Compatibility: Replaces common part numbers including B1256558, 1056558, and various Klixon sequencers.
• Multi-Circuit Control: Features a dual-pole configuration for simultaneous control of the blower motor and heating coils.
• Rugged Construction: Designed to withstand the thermal stress of high-amperage HVAC contactor operations.

What are the timing specs for this B1256558 sequencer?
This sequencer typically operates with an on-delay of 1 to 20 seconds and an off-delay ranging from 40 to 110 seconds, ensuring the heat exchanger cools before the blower shuts down.

Can this part replace a single-stack sequencer?
It is recommended to match the terminal configuration exactly. While a multi-stack sequencer can sometimes handle more loads, verify the wiring schematic of the specific air handler to ensure proper 24V transformer load management.

How do I troubleshoot a failing electric heat sequencer?
Common failure points include heating elements staying energized (stuck closed) or failing to engage (open heater coil). Use a multimeter to check for 24V at the heater terminals and continuity across the M terminals once energized.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.