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Lennox OF24-105 Ignition Control Board
An ignition control board has control over the main gas intake valve, the ignition sequence as well as other safety devices. It has been a very important circuit board that is now usually a standard part of the main board instead of having two separate boards.
Main clues the ignition board will die soon
- Signal from remote thermostat never moves to the Lennox control board
- The main ignition cycle declines to initiate at all
- Any other problem attached to the system checked out to be OK
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