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Carrier 58MSA100 Ignition Control Board
The main reason to have an ignition control board is that it controls gas flow, the igniter and all the flame sensing devices. The ignition control board was always an important board that some manufacturers have decided to blend to be a standard part of the main board instead of having two separate boards.
Important clues of a weakening major ignition board
- Every other problem in the heating and cooling system checked out to be just fine
- The electrical signal from the thermostat does not show up at the control board
- Initial ignition sequence does not commence no matter what
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