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International Comfort Products NBF100J20A1 Control Board
The control board is constructed to direct everything including the gas valve, the ignition igniter, the flame sensor and the blower all at once. Your air handler will be unable to operate whatsoever without this vital piece of hardware is in place and connected. Be absolutely sure when you are choosing a replacement board due to the many differences between certain brands. The correct control board should have a replacement part number that matches both the make and model of furnace or air handler you have.
What red flags are there that my main board has to be replaced?
- There is a type of code instantly appearing somewhere on the board
- The power to the system has to be turned off and back on often for the system to continue working
- The unit does not function correctly
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