Service Procedure Xi: Display Module Replacement - Bradford White UCG100H3993N Service Manual

Display Module Replacement
Step 1. Position main power switch to "OFF"
Step 2. Disconnect (unplug) water heater from 120 volt
power source.
Step 3. Remove four screws that hold the display into the
enclosure (shown on the right).
Step 4. After removing the screw pull the display out of the
enclosure.
Step 5. Once the display is removed disconnect the two mating
plugs.
Step 6. Connect in new display and replace into the enclosure.
Step 7. Use the four screws from step 3 and reinstall the display
onto the enclosure.
Step 8. Restore 120 volt power supply to water heater and confirm
proper operation following the lighting instructions on the
lighting instruction label or the lighting instruction located in
the installation and operating instruction manual.
Service Procedure XI:
Display Module Replacement
Disconnect
120 volt potential exposure. Isolate the
appliance and reconfirm power is disconnected
using a multi-meter.
Display and Enclosure
37
WARNING
37