Furrion E3 fault code — Water heater
Applies to: F2GWH, Lippert PN 2022107551
What E3 means
The Furrion F2GWH manual lists E3 as ECO open before ignition or during normal operation, normally from outlet water over 140 F.
Owner-safe checks
- Turn the appliance off and allow water to cool.
- Do not restart if hot-water temperature seems unsafe.
- Contact Furrion or a qualified technician if E3 returns.
Service-only work
- Internal sensor, ignition, flame-sense, ECO, blower, pressure-switch, linear-valve, wiring, and controller diagnosis is qualified service work.
Safety boundary
Do not keep operating a tankless gas water heater with repeated display faults, abnormal heat, blocked exhaust, gas odor, or unstable hot-water temperature.
Official sources
Related symptom guides
- Furrion tankless water heater low flow or low temperature
- Pre-service checklist for RV appliance calls