Start The Water Heater; If Water Heater Does Not Start Correctly; Set Water Heater Temperature - A.O. Smith 400 - 2100 Installation & Operation Manual

6
Start-up

Start the water heater

Read and follow the Lighting Instructions in FIG. 6-1, on page
43.

If water heater does not start correctly

1. Check for loose connections or service switch off?
2. Is external limit control (if used) open? Is water temperature
above 200°F (93.3°C)?
3. Is thermostat set below tank temperature?
4. Is gas turned on at meter or unit?
5. Is incoming gas pressure less than 4.5" water column?
If none of the above corrects the problem, refer to the
Troubleshooting Section of the Genesis Service Manual.
The venting system must be installed so that
WARNING
it will prevent flue gas spillage and carbon
monoxide emissions, which will result in
severe personal injury or death.

Set water heater temperature

To activate the Adjust Menu:
1. Press in and hold all three (3) programming buttons (Select,
+, and -) for three (3) seconds. The LCD screen will change
from the "View" Menu to the "Adjust" Menu.
2. Press the SELECT key until Target 1 appears, then use the +
and - keys to adjust the target to the desired setting.
3. Press the SELECT key to advance to Diff 1 and then use the
+ and - keys to adjust to the desired setting.
4. Repeat Steps 1 thru 3 above to set Target 2 and Diff 2.
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Installation & Operation Manual