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International Comfort Products N8MPN050B12A1 Ignition Control Board
Another safety feature is the ignition control board, which keeps an eye on the main gas intake valve, the ignition sequence and some other sensors. The ignition control board was always an important device that, in most cases, has become a vital part of the main control board instead of having two separate boards.
Some clues of a bad main ignition board
- Signal from main thermostat does not get to the control board
- Ignition system declines to kick in even when the thermostat kicks it on
- Every other thing within the furnace checks out just fine
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