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Carrier 38QRR024 Ignition Control Board
The main reason to have an ignition control board is that it may control the main gas intake valve, the ignition timing and a few other devices. It has been a very important electronic safety board that is now usually a piece of the main circuit board for enhanced safety.
Subtle hints the major ignition board has very little life left
- Any other problem within the heating and AC system checks out in good health
- The primary ignition sequence is unwilling to start at all
- Signal from main thermostat never reaches the main control board
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