Bradford White EF120T4003NA3 Service Manual page 18

Troubleshooting
Step 2: Press "DONE" button for new setting to take effect immediately. If the "DONE" button is not pressed, the new
temperature setting will take effect in approximately 10 seconds.
To Change Temperature Format in Display from   F to   C or ˚C to ˚F
Enter "Set-Up Mode" by pressing both UP/DOWN buttons together for 3 seconds.
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