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International Comfort Products TCH430AKA1 Ignition Control Board
Another safety feature is the ignition control board, which oversees the natural gas, the ignition ignitor and a few other devices. The ignition control board was always an important safety feature that some manufacturers have decided to blend to be a part of the main control board instead of a separate board.
Subtle cues of a worsening main ignition board
- HVAC ignition system is unable to start when it receives a proper signal
- Every other potential issue in the system is explored and ends up being just fine
- Initial communication from the home thermostat never reaches the main control board
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