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COMBUSTION ODOURS
1. Insufficient secondary air
2. Flue clogged
3. Heater installed in a confined area
1. Provide ventilation to water heater. Check
flue way, flue baffle, burner
2. Clean, locate source and correct
3. Provide fresh air ventilation
CONDENSATION
SMOKING AND CARBON FOR-
MATION (SOOTING)
BURNER FLAME FLOATS AND
LIFTS OFF PORTS
FLAME BURNS AT ORIFICE
BURNER FLAME TOO HIGH
1. Insufficient secondary air
2. Low gas pressure
3. Flue clogged
4. Defective gas control/thermostat
5. Heater installed in a confined area
6. Burner flame yellow-lazy
1. Provide ventilation to water heater. Check
flue way,flue baffle, burner
2. Check with gas utility company
3. Clean, locate source and correct
4. Replace gas control/thermostat
5. Provide fresh air ventilation
6. See “Burner Flame Yellow-Lazy”
1. Temperature setting too low
2. Water heater too small
1. Increase the temperature setting
2. Install adequate size heater
1. Orifice too large
2. High gas pressure
3. Flue clogged
4. Cold drafts
1. Replace with correct orifice
2. Check with gas utility company
3. Clean flue and burner-locate source & cor-
rect
4. Locate source and correct
1. Orifice too large 1. Replace with correct orifice
1. Defective gas control/thermostat
2. Low gas pressure
3 Orifice not properly installed
1. Replace gas control/thermostat
2. Check with gas utility company
3 Reinstall the orifice
PROBLEM
POSSIBLE CAUSE(S)
CORRECTION
INSUFFICIENT HOT WATER
1. Thermostat set too low
2. Sediment or lime in tank
3. Water heater too small
4. Wrong piping connections
5. Leaking faucets
6. Wasted hot water
7. Long runs of exposed piping
8. Hot water piping in outside wall
9. Low gas pressure
1. Turn temperature dial to desired setting
2. Drain/flush-provide water treatment if need-
ed
3. Install adequate size heater
4. Correct piping-dip tube must be in cold inlet
5. Repair faucets
6. Advise customer
7. Insulate piping
8. Insulate piping
9. Check with gas utility company
1. Insufficient secondary air
2. Flue clogged
3. Low gas pressure
4. Improper calibration
5. Gas control/thermostat set too low
6. Water heater too small
7. Wrong piping connections
8. Wasted hot water
1. Provide ventilation to water heater. Check
flue way, flue baffle and burner
2. Clean flue, locate source and correct
3. Check with gas utility company
4. Replace gas control/thermostat
5. Turn temperature dial to desired setting
6. Install adequate size heater
7. Correct piping-dip tube must be in cold inlet
8. Advise customer
DRIP FROM RELIEF VALVE
1. Excessive water pressure
2. Heater stacking
3. Closed water system
4. Temperature setting too high
1. Use a pressure reducing valve and relief
valve
2. Lower the thermostat setting
3. See “Closed System/Thermal Expansion”
4. Decrease the temperature setting
THERMOSTAT FAILS TO SHUT
OFF
1. Defective gas control/thermostat
2. Improper calibration
1. Replace gas control/thermostat
2. Replace gas control/thermostat
SLOW HOT WATER RECOVERY