Error Code 52 indicates a “Gas Modulating Valve Fault” on your Rheem Continuous Flow Water Heater. This valve controls the gas flow precisely for efficient heating. A fault can lead to improper operation or system shutdown.
Turn off electrical power at the isolation switch and ensure the gas supply valve is closed immediately. Gas modulating valve issues require professional evaluation due to safety risks. Contact Hilton Plumbing promptly to have the unit safely inspected and repaired.
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