Troubleshooting An E8 Error On A Fogatti Tankless Water Heater

Published 07/16/2024

Question:

Hi, I’m getting a E8 code on my FOGATTI tankless water heater model # FS08B1SA. What steps should I take to diagnose it? The unit is 3 months old and only used for 2 separate trips.

asked by: Michael

Expert Reply:

Hey Michael,

An E8 error code means you have a wind pressure switch failure. When the power is turned on for 5 seconds, the wind pressure switch is closed or the wind pressure is continuously disconnected for 2 seconds. There isn't much you can do besides check the exhaust tube to see if it's clogged or see if the sensor has a loose connection. I recommend reaching out to Fogatti for a warranty replacement.

expert reply by: Kevin C