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LG ARNU123SEL2 Control Board
Heating and cooling systems will not even be able to function without the main control board configured and seated properly. The control board is created to command everything including the gas valve, the ignition igniter, all the sensors as well as the air circulator all in one unit. A matching board is supposed to have a part number that matches both the make and model of air handler system you have. It is of utmost importance when you decide to replace your control board due to the vast differences in brands, models and types of systems.
Simple indications poorly running LG control board
- Power to the circuit board has to be turned off and back on quite often in order to run
- AC or heating system ceases to go properly
- When turned on, there is lit up error code being shown somewhere on the board
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