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TROUBLESHOOTING CHART
BURNER FLAME FLOATS AND
LIFTS OFF PORTS
1. High gas pressure
2. Orifice too large
3. Flue clogged
4. Cold drafts
1. Check with gas utility company
2. Replace with correct orifice
3. Clean flue and burner-locate source & correct
4. Locate source and correct
BURNER FLAME TOO HIGH
1. Orifice too large 1. Replace with correct orifice
FLAME BURNS AT ORIFICE
1. Low gas pressure
2. Defective thermostat
1. Check with gas utility company
2. Replace thermostat
PILOT FLAME
TOO SMALL
1. Low gas pressure
2. Pilot line or orifice clogged
1. Check with gas utility company
2. Clean, locate source and correct
SLOW HOT WATER RECOVERY
DRIP FROM RELIEF VALVE
THERMOSTAT FAILS TO SHUT OFF
CONDENSATION
COMBUSTION ODORS
SMOKING AND CARBON
FORMATION (SOOTING)
1. Provide ventilation to water heater vent.
Check vent
2. Check with gas utility company
3. Clean, locate source and correct
4. Replace thermostat
5. Provide fresh air ventilation
6. See Burner Flame Yellow-Lazy
1. Insufficient secondary air
2. Low gas pressure
3. Flue clogged
4. Defective thermostat
5. Heater installed in a confined area
6. Burner flame yellow-lazy
1. Insufficient secondary air
2. Vent clogged
1. Provide ventilation to water heater . Check
vent
2. Clean, locate source and correct
1. Temperature setting too low 1. Increase the temperature setting
1. Replace thermostat
2. Replace thermostat
1. Defective thermostat
2. Improper calibration
1. Use a pressure reducing valve and relief valve
2. Lower the thermostat setting
3. See Closed System/Thermal Expansion
1. Excessive water pressure
2. Heater stacking
3. Closed water system
1. Provide ventilation to water heater. Check vent
2. Clean vent, locate source and correct
3. Check with gas utility company
4. Replace thermostat
5. Turn temperature dial to desired setting
6. Install adequate heater
7. Correct piping-dip tube must be in cold inlet
8. Advise customer
1. Insufficient secondary air
2. Vent clogged
3. Low gas pressure
4. Improper calibration
5. Thermostat set too low
6. Heater too small
7. Wrong piping connections
8. Wasted hot water
PROBLEM POSSIBLE CAUSE(S) CORRECTIVE ACTION