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LG LP121HEM Ignition Control Board
The main ignition control board checks out gas intake, the ignition timing and the flame sensing circuits. It has been a very important board that some manufacturers have decided to blend to be a vital part of the main control board instead of a separate board.
What red flags are there that my ignition board is in need of replacing?
- HVAC ignition cycle can not launch no matter what
- The initial signal from the thermostat does not get to the LG control board
- Any other device attached to the system is looked at and turns out to be just fine
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