FVI12 Comprehensive Troubleshooting Guide
Eccotemp Systems, LLC
315a Industrial Rd. Summerville, SC 29483
www.eccotemp.com
1-866-356-1992
E1:
An E1 is directly related to an issue involving your gas supply.
If you are getting an E1 error code, first verify that your water heater is the correct gas type. On the right side of the water
heater, there is a plate that specifies LP for Liquid Propane or NG for Natural Gas. This should match the type of gas that
is being supplied. If this matches, verify that your installer checked to make sure that the gas is the correct pressure for
your 40H/HI. The pressure needed for this model is 11 inches of water column for Liquid Propane and 8 inches of water
column for Natural Gas. Also, make sure your installer used a regulator capable of delivering the proper gas flow needed
for the 133,000BTU 40H/HI. Next, verify that your gas supply is turned on. Lastly, after doing all of this, make sure that
you are not out of gas.
If these steps do not fix your issue, please contact technical support at 866-356-1992. Prior to calling, please be in front
of the water heater so we can troubleshoot over the phone. If you can’t be in front of the water heater, please be prepared
to answer these questions:
Can you hear the water heater trying to ignite? In a proper ignition sequence, the fan will come on, the display will show
ground water temperature, and you will hear a series of fast, high pitched clicking followed by a few lower pitched clicks
which are noticeably slower. It should go through this sequence twice if it does not ignite.
Does the water heater ignite, run briefly, and then shut itself down?
E2
An E2 error code indicates that there is something occurring electrically, within the water heater.
A common solution for this is to first unplug the water heater from its electrical supply. Next, remove the cover by
unscrewing the four screws that hold it in place. The indoor mounted 40HI models have a ribbon cable connecting the
display to the computer board. Please be careful as to not damage this wire. You will need to disconnect it using the
black connector located 6 inches from the display itself.
Once inside 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. You can
then screw the computer board back in place, replace the cover, plug up the power supply, and attempt to run the water
heater as normal.
If this does not fix your issue, please contact technical support at 866-356-1992
