Error Code 72 signifies a fault with the “Flame Sensing Device” in your Rheem Continuous Flow Water Heater. This sensor confirms proper ignition and operation of the burner. A malfunction may cause operational shutdowns or ignition failures.
Immediately turn off the electrical supply at the isolation switch and shut off the gas supply valve. Due to the importance of flame detection in ensuring safety, this issue requires professional diagnosis and repair. Contact Hilton Plumbing urgently to safely resolve this fault.
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