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Whynter ARC-12S Ignition Control Board
Another safety feature is the ignition control board, which checks gas flow, the igniter and all the flame sensing devices. It has been a very important safety feature that has now become a part of the main control board instead of having two separate boards.
Signals of a barely functioning main ignition board
- Initial communication from the thermostat never makes it to the main board
- Every other thing in the HVAC system is explored and ends up being acceptable
- HVAC ignition cycle can not start even though it is supposed to
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