Rheem XE40T12ES45U0 Electric Water Heater Error Codes
XE40T12ES45U0 Error Code Reference
Section titled “XE40T12ES45U0 Error Code Reference”Electric, 40 gal, 4,500 W dual element
| Error Code | Fault Description |
|---|---|
| C11 | Thermistor (temperature sensor) fault |
| C13 | High-limit (ECO) safety switch tripped |
| C4 | Upper element failure (electric models) |
| C5 | Lower element failure (electric models) |