Error Codes
What are common problems with ES620SOMS water heaters?
Common problems on the State ES620SOMS electric water heater are no hot water, slow recovery (runs out of hot water), water that is too hot, and leaking from a valve or fitting. These issues most often trace back to a failed thermostat, a burned-out heating element, sediment buildup, or a temperature and pressure relief valve that is weeping.
- No hot water: tripped breaker, high-limit reset tripped, failed thermostat, or failed heating element
- Not enough hot water: one element not heating, heavy sediment insulating the element, or thermostat out of calibration
- Water too hot: thermostat stuck closed or set too high
- Popping or rumbling: sediment buildup in the tank
- Water leaking from discharge pipe: relief valve opening due to pressure/temperature conditions
For this ES620SOMS model, these are the most frequently involved replacement parts:
- Thermostat 100108424
- Element 100108358
- Water heater heating element gasket 100108379
- Relief valve 100108279
- Anode rod 100109624
| Symptom | Most likely part area | Common fix |
|---|---|---|
| No hot water | Controls/heating | Replace thermostat or element |
| Slow recovery | Heating/sediment | Replace element; flush tank |
| Water too hot | Controls | Replace thermostat; set temp correctly |
| Drips at valve/discharge | Safety valve | Replace relief valve |
| Rusty odor/corrosion signs | Tank protection | Replace anode rod |
Electric water heater problems often start small (a single element failing or sediment building up) and then turn into higher energy use, inconsistent temperatures, and leaks. Addressing the root cause early helps protect the tank and reduces the chance of water damage.
- Turn power off at the breaker before removing access covers or touching wiring.
- If you see active leaking from the tank body or severe corrosion, stop using the heater and have it evaluated.
For step-by-step troubleshooting and repair help, use our DIY resources like water heater common questions and model-appropriate guides such as how to replace an electric water heater thermostat.
Last updated: February 2026
What is the average lifespan of an electric hot water tank?
An electric tank-style water heater typically lasts 10 to 15 years. For your State ES620SOMS electric water heater, lifespan depends most on water quality, how hard the unit works (household demand), and maintenance such as periodic tank draining and replacing wear items like the anode rod 100109624.
- Electric tank water heater: 10 to 15 years
- Tankless electric water heater: 20+ years
- Shortened lifespan is common with hard water, heavy usage, or neglected maintenance
- Hard water and sediment buildup increases element stress and overheating
- Corrosion inside the tank accelerates when the anode rod is depleted
- High temperature settings increase wear on the tank and heating components
- Loose or failing controls can cause overheating or inconsistent heating (see thermostat 100108424)
- Regular draining/flushes reduce sediment and help elements last longer
| What you notice | Most likely meaning | What we recommend |
|---|---|---|
| Water around the base of the tank | Tank leak or fitting leak | If the tank itself is leaking, replacement is the fix; check fittings first |
| No hot water or slow recovery | Heating element or thermostat issue | Test and replace the failed part (often element 100108358 or thermostat 100108424) |
| Popping/rumbling sounds | Sediment buildup | Drain/flush the tank; consider element inspection |
| Dripping from discharge pipe | T&P valve opening | Check temperature/pressure; replace the valve if it won’t reseat (see relief valve 100108279) |
Once an electric hot water tank gets past the 10-year mark, the risk of internal corrosion and tank failure rises quickly. Replacing maintenance parts on schedule, especially the anode rod, is the most effective way to extend service life and protect the tank.
Last updated: February 2026
How do I find the model number on my ES620SOMS?
The model number is printed on your State water heater’s rating label (data plate). On the ES620SOMS, you’ll typically find that label on the side of the tank near the upper access panel, or sometimes near the plumbing connections.
Check these common label locations first:
- Side of the tank, above or near the upper thermostat and element access cover
- Side of the tank, mid-height where the jacket is smooth and flat
- Near the top of the tank by the hot and cold water connections
- Near the lower access panel (if your unit has two access panels)
- On a sticker inside an access cover (less common)
On most State electric water heaters, the rating label includes several identifiers. Copy the model number exactly as shown.
| Label item | What it’s used for | Example you might see |
|---|---|---|
| Model number | Matching parts and diagrams | ES620SOMS |
| Serial number | Age and production info | (varies) |
| Voltage and wattage | Confirming electrical specs | (varies) |
If the sticker is worn or painted over, these steps usually help:
- Wipe gently with a damp cloth and mild soap, then dry
- Use a flashlight at an angle to make faded print stand out
- Take a close-up photo and zoom in
- Write down every character; model numbers are case-sensitive and spacing matters
Using the exact ES620SOMS model number helps us match the correct replacement parts for your water heater, such as the thermostat 100108424 or the element 100108358, so the fit and electrical ratings stay correct.
Last updated: March 2026
