If after replacing the display controller and ribbon cable you still get an E69 code, replace the MCBA. After replacing the conversion kit or both the conversion kit and the MCBA you may see either or “A—d” on the display screen of the boiler. If that occurs, press and hold the STORE button until COPY is displayed on the screen. You may only see the word COPY appear for a brief second. Once you see COPY on the screen, the boiler should reset and start to transfer the stored information between the conversion kit and the MCBA. After replacing the conversion kit or the conversion kit and the MCBA, you may also see an E04 on the screen. Keep pressing the RESET button for no more than one second until you see “d—A”, then follow the instructions in step 3 listed above.
If after replacing the display controller and ribbon cable you still get an E69 code, replace the MCBA. After replacing the conversion kit or both the conversion kit and the MCBA you may see either or “A—d” on the display screen of the boiler. If that occurs, press and hold the STORE button until COPY is displayed on the screen. You may only see the word COPY appear for a brief second. Once you see COPY on the screen, the boiler should reset and start to transfer the stored information between the conversion kit and the MCBA. After replacing the conversion kit or the conversion kit and the MCBA, you may also see an E04 on the screen. Keep pressing the RESET button for no more than one second until you see “d—A”, then follow the instructions in step 3 listed above.
2016%20Boiler%20Knowledge%20Base%2004152016GW.docx