A.O. Smith 710 ASME Service Manual page 73

<Freeze Protection pump setting mode>
To set the Freeze protection pump mode in 710, please follow the procedures below:
1. While in Standby mode (cannot be in combustion, forced-combustion, or FM adjustment modes),
press and hold the "Increase" button for 5 seconds or longer to start a display of "A" at "7-seg LED"
on the computer board.
2. While "A" is displayed, press the "Number display" button.
The "7-seg LED" will display "o"..."F"..."F", and then repeat the 3 letters. ("oFF" signifies the default
setting)
3. While "oFF" is blinking, press the "Number display" button again.
The "7-seg LED" will display "o"..."n", and then repeat the 2 letters.
4. While "on" is blinking, press the "Increase" button to fix the setting.
"b" will then be displayed.
5. Press the "Decrease" button to finish the setting.
710 / 710 ASME Service Manual
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CONFIDENTIAL
Ver. 1.00