Error Code 80 on your Rheem Continuous Flow Water Heater means “Gas Cut-Off Defective.” This fault occurs when the gas cut-off mechanism, crucial for safe operation, malfunctions or fails to operate correctly.
Immediately switch off both electrical power and gas supply at their respective isolation points. A faulty gas cut-off mechanism poses serious safety risks and should never be repaired by homeowners. Contact Hilton Plumbing urgently for professional diagnosis and repair.
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