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Lennox CB30M-51 Ignition Control Board
Another safety feature is the ignition control board, which governs gas flow, the ignition sequence and a few other devices. It has been a very important safety feature that some companies have moved to be a standard part of the main board instead of having two separate boards.
Clues your Lennox ignition control board is going to die
- Signal from home thermostat never gets to the main control board
- Every other problem within the furnace is inspected and turns out to be flawless
- HVAC ignition system does not kick in when called upon
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