FVI12 Comprehensive Troubleshooting Guide
Eccotemp Systems, LLC
315a Industrial Rd. Summerville, SC 29483
www.eccotemp.com
1-866-356-1992
Inside the water heater, at the bottom left, you will see the fan. Again, with the water heater unplugged, reach in and spin
the inside of the fan to make sure that it spins freely. After doing so, on the right side of the water heater, you will see a
grey box which contains the computer board located on the right side. If you remove the two screws on the face of the
computer board, it will slide out freely from the box. Next, disconnect and reconnect all of the wires which are connected
to the computer board to verify that everything is seated properly. Lastly, you will see two blue rubber boots on the
computer board. Remove the rubber boot from the fuse closest to the middle of the board and check to make sure it is
still intact. If it is not intact (the small metal wire in the center of it is broken), replace the fuse. Then, reinstall the board,
replace the cover, plug up the water heater to its power supply, and see if your issue is resolved.
If these steps do not fix your issue, please contact technical support at 866-356-1992.
E6
An E6 is extremely rare and is caused by the water heater not being able to maintain temperature, but not overheating.
This can be due to a low temperature setting, low water low, a higher than normal ground water temperature, or a
combination of the three. Increasing your water flow should fix this.
If these steps do not fix your issue, please contact technical support at 866-356-1992.