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Mitsubishi MUZ-FD12NA Ignition Control Board
The main ignition control board checks the gas valve, the ignition sequence and the flame sensing circuits. It has always been a vital circuit board that has now become a part of the main control board in order to have better control over the system.
Major warnings to watch for in a failing chief ignition control board
- Initial sequence can not kick in no matter what
- The initial signal from the thermostat never moves to the Mitsubishi control board
- Every other problem within the furnace checked out to be in good condition
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