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Goodman GMS91155DXA Ignition Control Board
The main reason to have an ignition control board is that it regulates gas flow, the ignition timing and the flame sensing circuits. It is an important safety device that some companies have moved to be a vital part of the main control board for enhanced safety.
Red flags the chief ignition control board will have to be replaced
- The primary ignition sequence refuses to start when it is supposed to
- Every other problem in the heating and cooling system checks out good
- The electrical signal from the main thermostat never reaches the control board
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