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Mitsubishi MSZ-FA35VA Ignition Control Board
The main ignition control board oversees the natural gas, the ignition sequence and other safety devices built into the system. It is an important board that, in most cases, has become a piece of the main circuit board instead of its own individual board.
Major symptoms your main ignition board is failing
- Ignition system is unwilling to commence even though it is supposed to
- Any other device throughout the system checked out to be OK
- Initial communication from the home thermostat never reaches the main control board
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