State Water Heater E57 Error Code — What It Means
An E57 error code does not appear in the published State Water Heaters technical documentation available at this time. State uses a variety of control platforms across its product line, and error codes vary by model family and manufacture date. Before attempting any repair, confirm the exact code displayed on your unit’s control board or LED indicator and locate the model number on the data plate (typically on the front or side of the tank). Some codes that look similar (such as E5, E7, or others in the E-series) relate to sensor faults, ignition problems, or flow issues on tankless models, but without manufacturer confirmation you cannot safely assume E57 has the same meaning.
Common Causes
- Misread or transposed code The display may show a different code (E5, E7, or a numeric code like 57) that you recorded as E57.
- Aftermarket or replaced control board A non-original controller may use a code set that does not match State’s published lists.
- Model-specific or regional variant Some State models sold under private label or in specific markets use fault codes not included in the main service literature.
- Firmware or software update Newer or updated control software may introduce codes that have not yet been added to printed manuals.
Step-by-Step Fix
- Write down the full model and serial number from the data plate on the water heater and note the exact characters shown on the display.
- Power off the unit at the circuit breaker or by turning the gas control knob to Off, wait thirty seconds, then restore power to see if the code reappears or changes.
- Photograph the display clearly so you have a record of the code, including any flashing pattern or accompanying indicators.
- Search the model number on the State Water Heaters website or call their technical support line with the photo and model data to request the correct fault definition.
- Do not proceed with parts replacement until you have confirmed what E57 means for your specific model, since misdiagnosis can lead to unnecessary expense and safety risks.
Parts Often Needed
| Part | Notes |
|---|---|
| Control board (model-specific) | Amazon | Only order after confirming the fault definition and verifying the board is faulty, not a sensor or wiring issue. |
| Temperature sensor or thermistor | Amazon | Common failure point if E57 turns out to be a sensor-related code on your model. |
When to Call a Pro
Call a licensed plumber or gas technician immediately if you smell gas, see water pooling, or if the unit has been showing any error code for more than a few power cycles. Because E57 is not defined in available State literature, professional diagnosis is the safest path. A technician with access to the manufacturer’s service portal or an updated code library can identify the fault correctly and avoid trial-and-error part swaps. If your water heater is still under warranty, unauthorized repair attempts may void coverage, so contact State or your installer first.