On the covered AO Smith gas water heater, 0 flashes (light not lit) means the control is off or the pilot is out. First, follow the lighting instructions on the front of the water heater and relight the pilot, then confirm through the view port that it is lit.
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0 of 2 completedWhat to do first
ReversibleFollow the lighting instructions on the front of the water heater and relight the pilot, then confirm through the view port that it is lit.
Correct only the documented fault domain
ReversibleA. O. Smith's handbook says: if the pilot lights but does not hold, check for a tripped thermal switch, and if it is tripped, check for flammable vapors and make sure the unit has adequate combustion air and proper draft before relighting; the switch resets by pressing the button in its center. Make sure the filter and flame arrestor are clean. If the pilot lights and holds, record any status code and follow the procedure for it. If the pilot will not light at all, confirm the piezo igniter is sparking and the supply gas pressure is correct, and check the thermopile wiring. Some of this is technician work.
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What does 0 flashes (light not lit) mean on a AO Smith gas water heater?+
The control is off or the pilot is out.