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International Comfort Products NAC218GKA1 Control Board
It is impossible for your furnace or air handler to even operate unless this board is properly connected to the unit. The control board is constructed to regulate the gas valve, the ignition igniter, all the sensors as well as the air circulator all at once. A matching board should have part numbers that match both the brand and specific model of your heating and cooling system. It is of utmost importance while picking a new replacement board due to variances between HVAC systems.
What symptoms are present when the main circuit board really needs to be replaced?
- The entire system is unwilling to run at all
- There may be a strange type of error code indicated on the circuit board
- The power to the system has to be powered down and back up a lot in order to continue running
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