Whirlpool Residential Gas Water Heater with the Flame Lock S User Manual download pdf (Page 28)

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.

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Whirlpool Residential Gas Water Heater with the Flame Lock S User Manual Page 28

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