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International Comfort Products N9MP1100J20A1 Control Board
The control board is constructed to command the gas valve, the igniter, all the various sensors and the blower all at once. The HVAC system will be unable to be able to function unless the control board is accurately installed and configured. You must do some research while selecting a replacement due to differences in brand and air handler types. The correct control board must be compatible with the brand and the model of air handler system you have.
Simple indications to watch for in a failing main board
- System declines to initialize at all
- System has a certain error code shown on the board
- The entire system has to be reset repeatedly for the furnace or AC to kick on
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