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Mitsubishi PLA-ABA Ignition Control Board
Another safety feature is the ignition control board, which governs gas intake, the ignition sequence and some other sensors. It is an important board that is now usually a part of the main control board in order to have better control over the system.
Subtle hints your main ignition board is dying
- Heating and cooling system refuses to commence even when called upon
- Any other problem in the system is looked at and turns out to be all right
- Signal from home thermostat does not make it to the Mitsubishi control board
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