Справочник Пользователя для American Water Heater 319407-002

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IMPORTANT: The gas control valve/thermostat is a standard 

valve with wire leads that connect to a thermal switch, flue 

damper, igniter, and flammable vapor sensor 
Removing the Gas Control Valve/Thermostat:
1.  

Turn off the gas at the manual shut-off valve on the gas 

supply pipe (Figure 5).

2.  Move the ON/OFF switch on the gas control valve/

thermostat to the “OFF” position to turn off the water 
heater and unplug from the wall outlet. (Figure 22).

3.  

Drain the water heater. Refer to the section of “Draining 

and Flushing” and follow the procedure.

4.  

Disconnect the wire harness, flammable vapor sensor 

wires, and  igniter wire from the gas control valve/

thermostat. Disconnect  pilot tube (7/16” wrench) and 

manifold tube (3/4” wrench) at the gas control valve/

thermostat  (Figure 27).  NOTE: L.P. Gas systems use 

reverse (left-hand) threads on the manifold tube.

5.  

Refer to “Gas Piping” (Figure 5) and disconnect the 

ground joint union in the gas piping. Disconnect the 

remaining pipe from the gas control valve/thermostat.

6.  To remove the gas control valve/thermostat, thread a 4” 

section of gas pipe into the inlet and use it to turn the 

gas control valve/thermostat (counterclockwise.) Do not 

use pipe wrench or equivalent to grip body.  Damage 

may result, causing leaks. Do not insert any sharp 

objects into the inlet or outlet connections. Damage to 

the gas control valve/thermostat may result.

Gas Control Valve/Thermostat:
To replace the gas control valve/thermostat, reassemble 

in reverse order. When replacing the gas control valve/

thermostat, thread a 4” section of gas pipe into the inlet and 

use it to turn the gas control valve/thermostat (clockwise.) 

DO NOT OVER TIGHTEN, damage may result. 
• 

Be sure to use approved Teflon® tape or pipe joint 

compound on the gas piping connections and fitting on 

the back of the gas control valve that screws into tank.

• 

Be sure to remove the pilot ferrule nut from the new gas 

control valve/thermostat.

• 

Turn the gas supply on and check for leaks. Test the 

water heater by brushing on an approved noncorrosive 

leak detection solution. Bubbles forming indicate a leak. 

Correct any leak found. 

• 

Be sure tank is completely filled with water before 

lighting and activating the water heater. Follow the 

“Lighting Instructions” on page 16.

• 

With the burner lit, check the gas control valve/

thermostat supply line, manifold component block, 

manifold tube, and pilot tube connections for 

leaks. Check for leaks by brushing on an approved 

noncorrosive leak detection solution. Bubbles forming 

indicate a leak. Correct any leak found. IMPORTANT: 

All leaks must be fixed immediately

• 

If additional information is required, contact the Service

 

Department at: 1-877-817-6750.

5.  No leaks at pilot and manifold connection.

6.  Manifold door screws securely tightened. 
7.  Depress the button on the thermal switch.          
       

1.  Manifold gasket properly sealed.

2.  Viewport not damaged or cracked.

3.  Flame-trap free of debris and undamaged.

4.  Manifold component block properly installed.

BURNER WILL NOT IGNITE

1.  Pilot will not light

2.  Thermostat set too low

3. No 

gas

4.  Dirt in the gas lines

5.  Pilot line clogged

6.  Main burner line clogged

7.  Non-functioning gas control valve/thermostat

8.  Heater installed in a confined area

9.  Flue Damper not functioning

1.  See PILOT WILL NOT LIGHT OR REMAIN 

LIT

2.  Turn temp. dial to desired temperature

3.  Check with gas utility company

4.  Notify utility-install trap in gas line

5.  Clean, locate source and correct

6.  Clean, locate source and correct

7. Replace 

gas control valve/thermostat

8.  Provide fresh air ventilation

9.  Cycle power to the water heater off and on. If 

problem persists replace the flue damper

PILOT WILL NOT LIGHT OR 

REMAIN LIT

1.  Non-functioning Pilot\Igniter-Flame Sensor

2.  The thermal switch tripped

3.  Igniter wire connection loose

4.  Air in gas line

5.  Low gas pressure

6. No 

gas

7.  Dirt in gas lines

8. Cold 

drafts

9.  Thermostat ECO switch open

10.  Pilot line or orifice clogged

11.  Air for combustion obstructed

12.  FV Senor Lockout

13.  Flue Damper not functioning

1.  See Status Light Code Troubleshooting Table

section

2.  See Pilot Light Troubleshooting Flowchart

section

3.  Seat connector firmly in socket

4.  Bleed the air from the gas line

5.  Check with gas utility company

6.  Check with gas utility company

7.  Notify utility-install dirt trap in gas line

8.  Locate source and correct

9. Replace 

thermostat

10.  Clean, locate source and correct

11.  See maintenance section for inspection and 

cleaning of flame trap.

12.  Contact a qualified person to reset the sensor

13.  Cycle power to the water heater off and on. If 

problem persists replace the flue damper