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Lennox CB28UH-018 Ignition Control Board
Another safety feature is the ignition control board, which has control over the main gas intake valve, the ignition ignitor and some other sensors. It is an important circuit board that is now usually a part of the main control board instead of a separate board.
Major signs of a worsening chief ignition control board
- Ignition system fails to begin when it receives a proper signal
- Communication from the remote thermostat does not show up at the main control board
- Every other problem throughout the system is inspected and turns out to be flawless
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