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International Comfort Products GDL075N12A1 Control Board
The HVAC system will be unable to be able to function unless this board is correctly installed. The control board is designed to regulate everything including the gas valve, the igniter, all the various sensors as well as the blower all at once. A replacement board will have a matching part number that will fit in both the brand and specific model of air handler system you have. You must do some research when you choose a control board due to the vast differences in brands, models and types of systems.
Clues to watch for in a bad main board
- When turned on, there is a type of code shown on the front of the control board
- The entire system has to be reset all the time for the thermostat to kick in
- Air conditioning or heating system cannot go well
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