Error Code 56 on your Rheem Continuous Flow Water Heater indicates a “Bypass Valve Fault.” This fault relates to the internal valve controlling water flow within the unit, affecting normal hot water operation and efficiency.
Immediately turn off the electrical supply at the isolation switch and close all hot water taps. A bypass valve fault requires internal inspection and repairs by a professional technician. Contact Hilton Plumbing promptly to resolve this issue safely.
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