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International Comfort Products T9MPD075F12A1 Ignition Control Board
The main reason to have an ignition control board is that it has control over gas intake, the ignition timing and all the flame sensing devices. It is an important electronic safety board that some companies have moved to be a standard part of the main board instead of having two separate boards.
Some clues of an unhealthy main ignition board
- The initial signal from the remote thermostat never does reach the control board
- Initial ignition sequence is unable to initiate even though it is supposed to
- Any other problem within the furnace is looked at and turns out to be in fine condition
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