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Lennox 14ACX-042 Ignition Control Board
Another safety feature is the ignition control board, which governs the main gas intake valve, the ignition sequence and all the flame sensing devices. It is an important safety feature that some companies have moved to be a major component of the main board for enhanced safety.
Key clues of an unhealthy main ignition board
- Ignition sequence does not begin no matter what
- Signal from primary thermostat never does reach the main board
- Any other device in the system checked out to be okay
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