A.O. Smith 110-310-510 – RESETTING THE COMPUTER BOARD:

1) Verify that there is no water flowing through the unit.
2) If a temperature remote controller has been installed, turn the power off to the remote.
3) Turn off power to the unit, and then turn on again.
4) Push and hold the “INC” and “DEC” buttons on the computer board simultaneously for several seconds until the red LED lights up solid.
5) Use the Power ON?OFF switch/GFI to turn the unit off then on again. The computer board is reset.

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