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The information on this web site is supplemental to the printed instructions that came with your water heater. To reduce the risk of property damage, serious injury or death, read and follow all labels on the water heater and the safety instructions in the printed owner's manual.
No tools or supplies are needed for this guide.
Four flashes every three seconds means the pilot is lit but the gas valve has detected an over-temperature condition.
Turn the gas control knob OFF, turn the gas supply valve OFF, and click on "Need More Help" below.