A.O. Smith G6-PVT4050NV Installation Instructions And Use & Care Manual page 29

TROUBLESHOOTING
LED STATUS OR ERROR CODE
8 FLASHES
INDICATES
This condition only appears if the gas control/
temperature knob has been turned off and the
thermopile continued to produce electric power.
This condition can occur if the thermopile does not
cool down as quickly as expected when the unit
is shut off. This condition can also occur if the gas
control/temperature knob has been turned off and
the pilot continues to operate because the pilot
valve is stuck in the open position.
CORRECTIVE ACTION
Make sure that the gas control valve/thermostat
knob is set to "OFF". Wait one minute. Remove
the outer door. Look through the sight glass for a
pilot flame. If a pilot flame is observed with the
gas control valve/thermostat knob set to the "OFF"
position, the pilot valve is stuck open. Turn the
main gas supply "OFF". Replace the gas control
valve/thermostat. For instructions, see "Removing
and Replacing the Gas Control Valve/ Thermostat."
If the pilot flame is not observed when the gas
control valve/thermostat knob is set to the "OFF"
position, wait 10 minutes for the thermopile to
cool, then attempt to relight the pilot by following
the lighting instructions on the water heater's
label. If this condition returns, replace the gas
control valve/thermostat. See "Removing And
Replacing The Gas Control Valve/Thermostat" for
instructions.
Residential Gas Water Heater Use and Care Guide • 29