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LG AMNH093D4A0 Control Board
The control board is constructed to regulate everything including the gas valve, the igniter, most sensors as well as the air circulator all at once. The entire heating and cooling system will not run without this vital piece of hardware is accurately installed and configured. A replacement board should have part numbers that match both the brand and specific model of HVAC system. You must be sure when choosing a control board because of the diversity of HVAC systems.
Subtle hints your main board will soon need to be replaced
- Power to the control board has to be turned off and back on quite a lot in order to operate
- Your HVAC unit will not do anything whatsoever
- When turned on, there is an error code being displayed on the circuit board
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