Error Code E1 on your Rheem Eclipse Continuous Flow Electric Water Heater indicates that the inlet thermistor is disconnected or malfunctioning. The inlet thermistor is a critical component that measures the incoming water temperature to regulate heating.
If the error code persists, take note of the code and turn off the hot tap. Contact Hilton Plumbing to arrange for professional inspection and servicing. This issue involves internal components and electrical wiring, requiring specialist tools and expertise.
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