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Carrier FX4BNF048000AAAA Ignition Control Board
An ignition control board checks out gas flow, the ignition timing and some other sensors. The ignition control board was always an important circuit board that some companies have moved to be a major component of the main board for safety reasons.
Major symptoms of a bad major ignition board
- The on-signal from the main thermostat does not turn up at the Carrier control board
- Ignition cycle can not fire up when it receives a proper signal
- Every other problem throughout the system is looked at and turns out to be problem-free
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