Richmond electric water heater shows E2T and shuts off; may trip the high-limit frequently.

Safety first: Turn OFF power at the breaker. Do not restore power until the cause of overheating is corrected.

• Reset ECO: Press the red reset button on the upper thermostat. If it trips again soon, do not continue resetting without finding the cause.
• Check thermostat mounting: Ensure both upper and lower thermostats are firmly clipped against the tank surface for proper temperature sensing.
• Inspect wiring: Compare wiring to the Richmond wiring diagram on the heater. Correct any miswired connections that could bypass thermostat control.
• Descale elements: Drain the tank and remove heating elements. Inspect for heavy scale. Replace elements if heavily coated and flush the tank to remove sediment.
• Replace faulty thermostat: If a thermostat contacts are welded closed or not cycling properly, replace the thermostat assembly.