FVI12 E6 Error Code Tech Support Updated March 15, 2017 17:45 Follow Tech Support Hello John Smith, Good day! We are glad that the unit is now back to its running condition. We appreciate your cooperation and patience on this matter! Please do not hesitate to reach back if you need further assistance. Thank you! Enjoy your hot water! Regards, Technical Support Team Eccotemp Systems LLC 1-866-356-1992 (Mon-Fri 9am-8pm PM EST) www.eccotemp.com John Smith I tried the given suggestion. First, I checked the fan and it spins freely. No obstructions at all. Then I checked the vacuum switch that you told me to blow and it seems stuck at some point. I tried it harder and it finally moved. I plugged the unit back to the outlet, turn my shower on and the unit ran. I ran it for several minutes with no failure. I will take a shower now and I will let you know if I get the same or different issue. Thank you for all your help.. I appreciate it so much! Thank you. John Smith Tech Support Hello John Smith, Good day! We apologize for the inconvenience. The E6 and E7 error codes indicates that there is a problem with air flow. This can either involve the fan, the vacuum/air-flow switch, the connections between them, or an exhaust blockage. Please locate the vacuum switch which is located on left upper hand corner of the FVi12 with a rubber hose with metal braid connecting to the fan assembly. Remove the connection from the fan and gently suck and blow back and forth into the tube. You should be able to feel the diaphragm moving inside as you blow or suck air from it. Please also check the fan it turns on or not and it it spins freely even by just pushing the propeller by you finger. Please let us know how you wish to proceed. Thank you! Regards, Technical Support Team Eccotemp Systems LLC 1-866-356-1992 (Mon-Fri 9am-8pm PM EST) www.eccotemp.com John Smith Hello Water heater has been showing an E6 error code recently and now will not run. I have gone through the online troubleshooting without any success. I've checked the wiring and it all appears to be properly connected with no apparent shortages. Could there be any other possible issues not listed that I can try? Thank you J. Smith Related articles FVI12NG - E6 Error FVI12 E3 FV112-LP owner/installation manual 40HI-NG getting E5 Unit shut down when mixing hot and cold Comments 0 comments Please sign in to leave a comment.