E3
State
High Limit / ECO (Energy Cut Off) Trip
State electronic gas tank-type water heater LED flashes E3; unit may overheat or shut down.
Advertisements
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Advertisements
Possible Causes
Overheating due to thermostat failure, Scale buildup reducing heat transfer, ECO switch open
How to Fix / Troubleshooting
Safety: Turn gas control to OFF and allow the tank to cool. Do not bypass safety devices.
- Check temperature setting: Ensure the thermostat is not set excessively high.
- Inspect for scale: In hard water areas, drain some water from the tank and check for heavy sediment. Flush the tank if needed.
- ECO reset: Some models have a manual-reset ECO on the gas control or tank. Press the reset if provided. If it trips again, the root cause must be corrected.
- Replace gas control: If the ECO is integral and will not reset, replace the gas control valve/thermostat.
Advertisements
Repair Difficulty
Medium
3/5
Required Part
Gas Control Valve / Thermostat
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements