Whirlpool Residential Gas Water Heater Installation Instructions And Use & Care Manual page 28

STATUS LIGHT CODE TROUBLESHOOTING CHART
LED STATUS
0 FLASHES (LED NOT LIT)
1 FLASH (EVERY 3 SECONDS)
2 FLASHES
4 FLASHES
5 FLASHES
7 FLASHES
8 FLASHES
28
PROBLEM
Pilot light is not lit. Not enough
power (millivolts) to keep it lit.
Normal operation.
Insufficient power (millivolts) to the
gas control valve/thermostat.
High water temperature has
activated the over heat sensor.
Sensor failure
Gas Control Valve/Thermostat
failure.
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
Follow the lighting instructions on the front of the
water heater and record any diagnostic codes.
See Diagnostic Status Light Code section.
No corrective action necessary.
1. Check all wiring connections. If problem
persists proceed to step 2.
2. Replace the thermopile. See "Replacing the
Pilot/Thermopile Assembly."
Replace the gas control valve/thermostat. See
"Removing and Replacing the Gas Control Valve/
Thermostat."
Replace the gas control valve/thermostat. See
"Removing and Replacing the Gas Control Valve/
Thermostat."
Replace the gas control valve/thermostat. See
"Removing and Replacing the Gas Control Valve/
Thermostat."
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.