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Carrier 50TM004 Ignition Control Board
The ignition control board is a safety device that controls the natural gas, the igniter and other important devices. It is an important safety feature that is now usually a vital part of the main control board instead of its own individual board.
Clues the major ignition board has very little life left
- Initial communication from the main thermostat never turns up at the control board
- The primary ignition sequence can not fire up at all
- Every other device within the heating and AC system checks out flawless
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