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PROBLEM CORRECTIVE ACTION
HIGH OPERATION COSTS
INSUFFICIENT HOT WATER
SLOW HOT WATER
RECOVERY
DRIP FROM RELIEF VALVE
POSSIBLE CAUSE(S)
1. Thermostat set too high
2. Sediment or lime in tank
3. Water heater too small for job
4. Wrong piping connections
5. Leaking faucets
6. Gas leaks
7. Wasted hot water
8. Long runs of exposed piping
9. Hot water piping in exposedwall
1. Thermostat set too tow
2. Sediment ortime intank
3. Water heatertoo 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. Insufficient secondary air
2. Water heater flue or vent system
blocked
3. Low gas pressure
4. Improper calibration
5. Thermostat set too low
6. Water heater too small
7. Wrong piping connections
8. Wasted hot water
1. Excessive water pressure
2. Heater stacking
3. Closed water system
,
2.
1.
2.
3.
1. Set temperature dial to lower setting
2. Drain/flush-provide water treatment if needed
3. Install adequate heater
4. Correct piping-dip tube must be in cold inlet
5. Repair faucets
6. Check with utility-repair at once
7. Advise customer
8. Insulate p!p!ng
9. Insulate piping
1. Turn temperature dial to desired setting
2. Drain/flush-provide water treatment if needed
3. Install adequate heater
4. Correct piping-dip tube must be in cold inlet
5 Repair faucets
6. Advise customer
7. Insulate piping
8. Insulate I_iping
9. Check with gas utility company
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 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
,
,
3.
THERMOSTAT FAILSTO Thermostat not functioning prop- 1. Replace thermostat
SHUT-OFF erly 2. Replace thermostat
Improper calibration
COMBUSTION ODORS Insufficient secondary air 1.
Water heater flue or vent system
blocked
Heater installed in a confined area
1. Insufficient secondary air
,
3.
1.
2.
3.
4.
5.
6.
2. Low gas pressure
3. Water heater flue or vent system
blocked
4. Thermostat not functioning prop-
erly
5. Heater installed in a confined area
6. Burner flame yellow-lazy
SMOKING AND CARBON
FORMATION (SOOTING)
1. Temperature setting too low 1.
,
2.
3.
CONDENSATION
BURNER FLAME FLOATS
AND LIFTS OFF PORTS
1. Orifice too large
2. High gas pressure
3. Water heater flue or vent system
blocked
4. Cold drafts
Use a pressure reducing valve and relief
valve
Lower the thermostat setting
See "Closed System/Thermal Expansion"
Provide ventilation to water heater. Check
flue
way, flue baffle, and burner
Clean, locate source and correct
Provide fresh air ventilation
Provide ventilation to water heater. Check
flue way, flue baffle, burner
Check with gas utility company
Clean, locate source and correct
Replace thermostat
Provide fresh air ventilation
See "Burner Flame Yellow-Lazy"
,
BURNER FLAME TOO HIGH 1. Orifice too large 1.
FLAME BURNSAT ORIFICE 1. Thermostat not functioning prop- 1.
erly 2.
2. Low gas pressure
PILOT FLAME 1. Pilot line or orifice clogged 1. Clean, locate source and correct
TOO SMALL 2. Low gas pressure 2. Check with gas utility company
Increase the temperature setting
Replace with correct orifice
Check with gas utility company
Clean flue and burner-locate source and cor-
rect
Locate source and correct
Replace with correct orifice
Replace thermostat
Check with gas utility company
3O