Whirlpool Residential Gas Water Heater with the Flame Lock Safety System - Manual (Page 28)

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STATUS LIGHT CODE TROUBLESHOOTING CHART
LED STATUS PROBLEM CORRECTIVE ACTION
0 FLASHES (LED NOT LIT) Pilot light is not lit. Not enough
power (millivolts) to keep it lit.
Follow the lighting instructions on the front of the
water heater and record any diagnostic codes.
See Diagnostic Status Light Code section.
1 FLASH (EVERY 3 SECONDS) Normal operation. No corrective action necessary.
2 FLASHES Insufficient power (millivolts) to the
gas control valve/thermostat.
1. Check all wiring connections. If problem
persists proceed to step 2.
2. Replace the thermopile. See “Replacing the
Pilot/Thermopile Assembly.”
4 FLASHES High water temperature has
activated the over heat sensor.
Replace the gas control valve/thermostat. See
“Removing and Replacing the Gas Control Valve/
Thermostat.”
5 FLASHES Sensor failure Replace the gas control valve/thermostat. See
“Removing and Replacing the Gas Control Valve/
Thermostat.”
7 FLASHES Gas Control Valve/Thermostat
failure.
Replace the gas control valve/thermostat. See
“Removing and Replacing the Gas Control Valve/
Thermostat.”
8 FLASHES 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.
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.