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SPT WA-1220M Ignition Control Board
The main reason to have an ignition control board is that it manages gas flow, the ignition timing and all the flame sensing devices. It has always been a vital device that some companies have moved to be a vital part of the main control board instead of its own individual board.
Warnings your ignition control board has to be replaced
- Signal from primary thermostat never moves to the SPT control board
- Every other problem within the furnace is explored and ends up being OK
- Ignition system does not fire up even though it is supposed to
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