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GE AZ75W18DACM1 Ignition Control Board
The main reason to have an ignition control board is that it oversees the gas valve, the ignition ignitor and all the flame sensing devices. The ignition control board was always an important electronic safety board that is now usually a standard part of the main board instead of a separate board.
Indications the major ignition board is dying
- Ignition cycle refuses to initiate at all
- Every other problem in the HVAC system is researched and comes to be a-OK
- Signal from main thermostat never reaches the main board
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