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Lennox HP13-048 Ignition Control Board
The main reason to have an ignition control board is that it controls the gas valve, the ignition sequence and other safety devices built into the system. It is an important device that is now usually a standard part of the main board instead of a separate board.
Key clues of a bad major ignition board
- Initial communication from the thermostat never does reach the main control board
- Every other potential issue within the furnace checked out to be problem-free
- The ignition cycle is unwilling to begin when called upon
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