Bradford White EF120T4003NA3 Service Manual page 14

The following procedure is for service and installation personnel only. Resetting lockout conditions without correcting
the malfunction can result in a hazardous condition.
Water Heater Display and Control Buttons
The display has a "Diagnostic Mode" for accessing information in aiding servicing of the water heater. This
procedure is for service and installation personnel only. To enter the Diagnostic Mode, follow the steps
illustrated below:
The following procedure is for service and installation personnel ONLY. Resetting lockout conditions
without correcting the malfunction can result in a hazardous condition.
Step 1: Press and hold the lower right button under "Next" in the lower right display for at least 3 seconds.
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Troubleshooting
WARNING
WARNING
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