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International Comfort Products T9MPD100J20A1 Ignition Control Board
The main reason to have an ignition control board is that it manages the main gas intake valve, the ignition timing and the flame sensing circuits. It has been a very important safety feature that some manufacturers have decided to blend to be a major component of the main board instead of its own individual board.
Subtle cues of a laboring main ignition board
- The initial signal from the remote thermostat does not turn up at the control board
- Everything else within the system is inspected and turns out to be in fine condition
- HVAC ignition system refuses to fire up at all
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