Error Code 16 on your Rheem Continuous Flow Water Heater indicates an “Over Temperature Warning.” This error occurs when water temperature exceeds safe operating limits due to flow restriction or malfunctioning temperature sensors.
Immediately switch off the electrical supply at the isolation switch and cease hot water use. Allow the unit time to cool. This problem requires a professional diagnosis due to safety concerns related to overheating. Contact Hilton Plumbing to ensure safe resolution.
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