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Carrier 48JZ048115300 Ignition Control Board
An ignition control board oversees the gas valve, the ignition sequence as well as other safety devices. The ignition control board was always an important electronic safety board that some manufacturers have decided to blend to be a piece of the main circuit board for safety reasons.
Simple signals the major ignition board will need to be replaced
- The on-signal from the remote thermostat never makes it to the main board
- The ignition system refuses to begin when it receives a proper signal
- Everything else in the HVAC system is inspected and turns out to be problem-free
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