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Mitsubishi MUY-GE18NA Ignition Control Board
The purpose of the ignition control board is that it keeps an eye on the main gas intake valve, the igniter and a few other devices. It has always been a vital electronic safety board that, in most cases, has become a piece of the main circuit board instead of its own individual board.
Signs your main ignition board is on its last leg
- Initial communication from the main thermostat gets lost before it makes it to the main board
- The primary ignition sequence does not launch even though it is supposed to
- Any other problem in the system is looked at and turns out to be acceptable
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