American Water Heater 30 Gallon 30000 BTU UltraLow Nox Natural Gas Water Heater UG6130T303NV user manual

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PILOT LIGHT TROUBLESHOOTING CHART 
Have you bled all the air 
from the pilot tube and 
gas supply line?NOWhile repeatedly depressing the igniter 
button, push in and hold the gas control/
temperature knob until the pilot is lit and 
maintains a stable flame, (status light 
will blink) then release the gas control/
temperature knob. 
Section A: Pilot light will not light (new installation).
Is the manual gas shut-off valve, 
located in the supply line to the 
water heater, in the on position?NO
YES
Turn the manual gas shut-off valve to 
the on position and follow the lighting 
instructions on the front of the water heater.
Is the igniter producing a 
spark?YES
NO
Follow the “Testing the Igniter 
System” section in this manual.
Check for insufficient combustion air.
Are the combustion air supply and ventilation openings 
of sufficient size? See “Combustion Air Supply and 
Ventilation” section in this manual for requirements.
Is there a furnace/air handler in the same room as the water heater?
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.
Is there proper drafting at the 
drafthood? See “Checking the 
Draft” section in this manual.
NO
Contact a local Heating, 
Ventilation, Air-Conditioning 
& Refrigeration authorized 
service provider to correct 
the combustion air supply/
ventilation issue.Correct size of 
openings to allow 
sufficient air.
NO
YES
YES
YES
NO
Check the vent 
system for restrictions/
obstructions and check 
the vent termination 
height. Refer to the 
“Installation Instructions” 
section of this manual for 
specific requirements.
NO
Section C: Pilot light will not remain lit.
Reference the number on the cover of this 
manual for service information.
YES
Set thermostat to desired temperature.
Section B: Pilot light repeatedly goes out.
Remove the burner door 
assembly. Are the flame-trap and 
burner free from debris due to 
excessive lint, dirt, dust or oil?Refer to the “Maintenance of 
your Water Heater” section of this 
manual for information on cleaning 
the flame-trap and burner. 
NO
YES
Does the diagnostic status light on the 
gas control valve/thermostat give 
a two flash error code?
Does the flame-trap 
show signs of 
discoloration? 
YES
Shut-off the gas supply to the water heater at the 
manual gas shut-off valve, use the number on the 
cover of this manual to contact Customer Service.
NOReassemble the heater and attempt to 
return the heater to service. Does the 
pilot remain lit?
YES
Set to desired temperature.
NO
YES
Refer to the “Replacing the Pilot 
Assembly” instructions in the manual.
Reassemble and restore to service. 
Go to section C. 
NO
NOTE: If you are still experiencing diffi culties after 
following the steps in sections A, B, and C,  
use the 
number on the cover of this manual to contact Customer 
Service
.
YES 
						

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REPAIR PARTS ILLUSTRATION
1A
2
38
5A
10
11
97
6A
6B
5B
4
1B
LEGEND
Special anode rod (see page 21)
Temperature and Pressure Relief Valve is required, 
but may not be factory installed
Unique: Flame Guard™ Safety System parts
When ordering repair parts always give the following 
information:
1.  Model, serial, and product number
2.  Type of gas
3. Item number
4. Parts description
Repair Parts List
Item
 No.Parts Description
1A DRAFT HOOD
1B DRAFT HOOD (50K Models only)
2 REDUCER RING - SOME MODELS
3 FLUE BAFFLE
4 HEAT TRAP (COLD) - SOME MODELS
5A HEAT TRAP (HOT) - SOME MODELS
5B HEAT TRAP/NIPPLE COMBO (HOT) 
(50K Models Only)
6A COLD WATER DIP TUBE
6B HEAT TRAP/NIPPLE/DIP TUB COMBO (COLD) 
(50K Models Only)
7 ANODE ROD
8 TEMPERATURE  & PRESSURE RELIEF VALVE
(LOCATED TOP OR SIDE)
9 DRAIN VALVE
10 GAS CONTROL VALVE/THERMOSTAT
10 CONTROL MODULE
 
11 OUTER DOOR
12A*PILOT/THERMOPILE ASSEMBLY  KIT 
12B*PILOT/THERMOPILE ASSEMBLY KIT (50K Models) 
13A* BURNER DOOR ASSEMBLY 
(Natural Gas/Low Nox)
13B* BURNER DOOR ASSEMBLY (50K Models) 
(Natural Gas/Low Nox)
14* MANIFOLD COMPONENT BLOCK 
15* BURNER DOOR GASKET
16* VIEWPORT ASSEMBLY
17* FLEXIBLE MANIFOLD TUBE
18* TEMPERATURE SENSOR
19* THERMOPILE
*Pictured on next page. 
						

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Listed Parts Kits and Illustrations
Item 12A: Pilot assembly kit, which contains the pilot, electrode, and thermopile (Natural Gas)
Item 12B: Pilot assembly kit (50K Models), which contains the pilot, electrode, and thermopile (Natural Gas)
 Item 13A: Burner Door assembly, which contains the burner, gasket, door, pilot tube, manifold component block with 
retainer clip, temperature sensor, and pilot assembly. (Natural Gas/Low Nox)
 Item 13B: Burner Door assembly (50K Models), which contains the burner, gasket, door, pilot tube, manifold component 
block with retainer clip, temperature sensor, and pilot assembly. (Natural Gas/Low Nox)
Item 14:  Contains manifold component block and retainer clip
Item 15:  Contains manifold door gasket
Item 16:  Contains viewport
Item 17:  Contains flexible manifold tube
Item 18:   Contains temperature sensor (30K and 40K BTU models only.)
Item 19:  Contains thermopile (30K and 40K BTU models use a threaded thermopile, 50K BTU models use a snap in 
thermopile.)
Item #12A
141516
1718
Item #12B
13A13B
19 
						

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NOTES 
						

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NOTES 
						

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Copyright © 2012 American Water Heater Company.  All Rights Reserved. Printed in the U.S.