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Whirlpool Ultra Low Nox Installation Instructions And Use & Care Manual page 27

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PILOT LIGHT TROUBLESHOOTING CHART
Section A: Pilot light will not light.
|ls the gas turned on? ^NO i
YES
Check the manual gas shut-off valve to
see if it is in the open position, if it is open
then contact the gas utility company.
Have you bled all the air
from the pilot tube and
gas supply line?
■NOi
YES
While repeatedly depressing the igniter button,
hold down the reset button until the pilot is lit and
maintains a stable flame, then slowly release the
reset button.
Is the igniter producing a
spark?
■NOi
Follow the Testing the Igniter System
instructions in this manual.
YES
Is the pilot tube and/or orifice
free from dirt and debris?
■NOi
YES
Follow Hie Replacing the Pilot Assembly
instructions found in this manual to access
pilot tube and orifice. Clean as needed and
reinstall pilot tube and orifice.'
Is the pilot free from dirt and
debris?
■NOi
Follow the Cleaning the Pilot Assembly
instructions found in this manual.*
YES
Is the pilot protected from cold
drafts that could prevent it
from lighting.
■NOi
Eliminate any drafts. See the
'Site Location" instructions found
in this manual.
YES
Remove the burner door assembly. Is
the flame-trap free from dirt or debris?
See 'Removing the Burner Door
Assembly" section of the manual for
removal instructions.*
Clean the flame-trap
with a soft bristle brush
or vacuum cleaner.
YES
| Check the water heater for a Flammable Vapor (FV) event. |
If the flame-trap show signs of discoloration, shut-off the gas supply
to the water heater at the manual gas shut-off valve, then contact
Customer Service at: 1-877-817-6750.
' This procedure requires the removal of water heater components.
Section B: Pilot light will not remain lit or repeatedly goes out.
Is the thermocouple securely
connected to the gas control
valve/thermostat?
■NOi
Make sure the thermocouple is securely
connected. Finger tighten then give a
additional 1/2 turn with a wrench.
YES
Test the thermocouple using the following procedure: Disconnect the thermocouple
from the gas control valve/thermostat. Using a multimeter with alligator clip leads,
attach the red lead lo the body (copper part) of the thermocouple. Attach the black lead
to the end (silver part) of the thermocouple that connects to the gas control valve/
thermostat. Follow the instruction to light the pilot and watch the voltage readings on
the multimeter. After 45 seconds the meter should read 12 millivolts DC or more.'
[Does the thermocouple pass the test?^N
Is the thermocouple fully
seated in the pilot bracket?
YES
YES
NO
|Replace the thermocouple.
Push the thermocouple
forward until it is fully seated in
the pilot bracket and retest.*
Is the pilot tube and/or orifice
free from dirt and debris?
■NOi
YES
Follow the Replacing the Pilot Assembly
instructions round in this manual to access
pilot tube and orifice. Clean as needed and
reinstall pilot lube and orifice.*
|ls the pilot free from dirt and debris?
\mttO ■
YES
+
,
ICheck for insufficienl combustion air. I
Follow the Cleaning the Pilot Assembly
instructions found in this manual.'
Are there openings for
make-up air to enter the
room?
Install correct size make-up air openings per the
Combustion Air Supply and Ventilation section in
this manual.
YES
Are the openings of sulficient size?
See Combustion Air Supply and Ventilation
section in this manual for requirements.
Correct size of openings to
allow sufficient air.
YES
NO^Is there a furnace/air handler in the same room as the waler heater?|
YES
Does the return air duct for the furnace/
air handler draw its air from a separate
location than the water heater? See the
Location Requirements section and the
Combustion Air Supply section.
■NOi
Contact a local Heating,
Ventilation, Air-Conditioning
& Refrigeration authorized
service provider.
YES
Is there proper drafting at the
draft hood? See Checking the
Draft section in this manual.
■NOi
YES
Check the vent system for
restrictions/obstructions and check
Ihe vent termination height. Refer to
the Installation Instructions section of
this manual for specific requirements.
Remove the burner door
assembly. Is Ihe dame-trap and
burner free from debris due to
excessive lint, dirt, dust or oil?
Refer lo the Use & Care Guide section
of this manual for information on
cleaning the flame-trap and burner.
YES
| Does the flame-trap show signs of discolorationTfNO
YES
Shut-off the gas supply to the water heater at
the manual gas shut-off valve, then contact
Customer Service at: 1-877-817-6750.
Replace the gas control
valve/thermostal.*
27

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