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Lennox CB30U-51 Ignition Control Board
An ignition control board has control over gas intake, the igniter and the flame sensing circuits. It is an important circuit board that is usually a piece of the main circuit board for safety reasons.
Important hints the ignition board will have to be replaced
- The initial signal from the home thermostat never makes it to the Lennox control board
- Ignition system refuses to start when called upon
- Everything else in the HVAC system is researched and comes to be just fine
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