TROUBLESHOOTING GUIDE (Continued)

PROBLEM

 

POSSIBLE CAUSE(S)

 

CORRECTIVE ACTION

DRIP FROM RELIEF VALVE

1.

Excessive water pressure

1.

Use a pressure reducing valve and relief

 

2.

Closed water system

2.

valve

 

See “Thermal Expansion”

THERMOSTAT FAILS TO

1.

Non-functioning thermostat

1.

Replace thermostat

SHUT OFF

2.

Improper calibration

2.

Replace thermostat

COMBUSTION ODORS

1.

Insufficient air

1.

Provide ventilation to water heater.

 

 

 

 

Check flue

 

2.

Water heater flue or vent system blocked.

2.

way, flue baffle, and burner

 

Clean, locate source and correct

 

3.

Heater installed in a confined area

3.

Provide fresh air ventilation

SMOKING AND CARBON

1.

Flammable vapor incident

1.

Call 1-800-4-MY-HOME®(1-800-469-4663)

FORMATION (SOOTING)

 

 

 

 

CONDENSATION

1.

Temperature setting too low

1.

Increase the temperature setting

BURNER FLAME FLOATS

1.

Orifice too large

1.

Replace with correct orifice

AND LIFTS OFF PORTS

2.

High gas pressure

2.

Check with gas utility company

 

3.

Water heater flue or vent system blocked.

3.

Clean flue and burner-locate source and

 

4.

Cold drafts

4.

correct

 

Locate source and correct

 

5.

Dirty burner screen

5.

Clean burner screen. See “Ultra Low

 

 

 

 

NOx Natural Gas Burner” section of this

 

 

 

 

manual.

FLAME BURNS AT ORIFICE

1.

Non-functioning thermostat

1.

Replace thermostat

 

2.

Low gas pressure

2.

Check with gas utility company

 

3.

Non-functioning burner

3.

Replace burner assembly

PILOT FLAME TOO SMALL

1.

Pilot line or orifice clogged

1.

Clean, locate source and correct

 

2.

Low gas pressure

2.

Check with gas utility company

 

3.

Dirty pilot

3.

Clean pilot

29