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International Comfort Products H8DNL100L20A1 Ignition Control Board
Another safety feature is the ignition control board, which keeps an eye on gas intake, the ignition timing and all the flame sensing devices. It has always been a vital safety device that some companies have moved to be a vital part of the main control board in order to have better control over the system.
Main clues the major ignition board is in need of replacing
- The ignition cycle is unable to begin then the thermostat send a signal
- Any other device within the heating and AC system checked out to be a-OK
- Signal from main thermostat never makes contact with the main board
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