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International Comfort Products PGF048S120F Ignition Control Board
The purpose of the ignition control board is that it oversees the natural gas, the ignition timing and the flame sensing circuits. It is an important safety device that some manufacturers have decided to blend to be a vital part of the main control board in order to have better control over the system.
Subtle hints the chief ignition control board is going out
- Every other thing in the heating and cooling system is inspected and seems to be OK
- HVAC ignition cycle is unwilling to kick in no matter what
- Initial communication from the main thermostat never gets to the main board
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