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PROBLEM POSSIBLE CAUSE(S) CORRECTIVE ACTION
DRIP FROM RELIEF VALVE 1. Excessive water pressure 1. Use a pressure reducing valve and relief
valve
2. Closed water system 2. 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
way, flue baffle, and burner
2. Water heater flue or vent system blocked. 2. Clean, locate source and correct
3. Heater installed in a confined area 3. Provide fresh air ventilation
1. Flammable vapor incident 1. Call 1-800-4-MY-HOME _'(1-800-469-4663)
SMOKING AND CARBON
FORMATION (SOOTING)
CONDENSATION
BURNER FLAME FLOATS
AND LIFTS OFF PORTS
1. Temperature setting too low
1. Orifice too large
2. High gas pressure
3. Water heater flue or vent system blocked.
4. Cold drafts
5. Dirty burner screen
1. Increase the temperature setting
1. Replace with correct orifice
2. Check with gas utility company
3. Clean flue and burner-locate source and
correct
4. Locate source and correct
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
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