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While some specs may crossover
The insertion length is specific to the heat exchanger geometry
These two part numbers refer to the exact same technical specification and are 100% interchangeable in Lennox heating systems
or an audible humming from the motor without rotation
Amana-Goodman B1256558 Sequencer While some specs may crossoverThe 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
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