How do I reset a Lennox furnace after receiving an E227 error?

By: USER9642
27 Agustus 2025 Support 5 minutes
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Grade: Education Subject: Support
How do I reset a Lennox furnace after receiving an E227 error?
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After addressing the underlying cause (wiring, breaker, etc.), you can attempt a reset. Turn off power to both the furnace *and* the outdoor unit at the breakers for at least 30 seconds. Then, restore power to the outdoor unit first, wait a minute, and then restore power to the furnace. This allows the systems to re-establish communication.
Answered on 27 Agustus 2025

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