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Sanyo XHS1872 Ignition Control Board
The ignition control board is a safety device that oversees the gas valve, the igniter and the flame sensing circuits. It has been a very important board that some companies have moved to be a standard part of the main board instead of having two separate boards.
Main clues the major ignition board will die soon
- Heating and cooling system is unwilling to activate when it receives a proper signal
- Every other problem in the system is inspected and turns out to be a-OK
- Initial communication from the home thermostat never makes it to the main board
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