Fvir System Operational Checklist; Troubleshooting Checklist - A.O. Smith GAS WATER HEATER Installation Instructions And Use & Care Manual

FVIR System Operational Checklist

1. Manifold gasket properly sealed.
2. Viewport not damaged or cracked.
3. Flame-arrestor free of debris and undamaged.
4. Manifold component block properly installed.
PROBLEM
BURNER WILL NOT IGNITE
SMELLY WATER
BURNER FLAME YELLOW-
LAZY
PILOT WILL NOT LIGHT OR
REMAIN LIT
HIGH OPERATION COSTS
INSUFFICIENT HOT WATER 1.
TROUBLESHOOTING CHART
POSSIBLE CAUSE(S)
1. Pilot not lit
2. Thermostat set too low
3. Main burner line clogged
4. Non-functioning thermostat
5. Base-Ring Filter blocked with lint/
dust
6. Heater installed in a confined area
7. FVIR Flame Arrestor blocked with
lint/dust.
1. Sulfides in the water
1. Insufficient combustion air
2. Low gas pressure
3. Water heater flue or vent system
blocked
4. Main burner line clogged
5. Base-Ring Filter blocked with lint/
dust
6. Heater installed in a confined area
7. FVIR Flame Arrestor blocked with
lint/dust.
8. Obstruction in main burner orifice
1. Non-functioning igniter
2. The thermal switch tripped
3. Wire lead connection at thermal
switch loose
4. Thermopile connection loose
5. Air in gas line
6. Low gas pressure
7. No gas
8. Dirt in gas lines
9. Cold drafts
10. Thermostat temperature limit was ex-
ceeded. Status light will blink 4 flashes.
11. Pilot line or orifice clogged
12. Non-functioning thermopile
13. Air for combustion obstructed
14. FVIR Flame Arrestor blocked with
lint/dust
15. Flammable vapors incident, FVIR
function actuated
16. Base-Ring Filter blocked with lint/
dust
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 exposed wall
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
5. No leaks at pilot and manifold connection.
6. Manifold door screws securely tightened.
7. Depress the button on the thermal switch
1. Light pilot
2. Turn temp. dial to desired temperature
3. Clean, locate source and correct
4. Test Gas Control Valve/Thermostat
5. Clean filter, See "External Inspection &
Cleaning of the Base-Ring Filter" section.
6. Provide fresh air ventilation
7. Clean filter, See "Cleaning the Combustion
Chamber and Flame-Arrestor" section.
1. Replace the anode with a special anode
1. Provide ventilation to water heater
2. Check with gas utility company
3. Clean, locate source and correct
4. Clean, locate source and correct
5. Clean filter, See "External Inspection &
Cleaning of the Base-Ring Filter" section.
6. Proper fresh air ventilation
7. Clean filter, See "Cleaning the Combustion
Chamber and Flame-Arrestor" section.
8. Clean or replace orifice
1. Replace igniter pilot assembly
2. See Pilot Light Troubleshooting Flowchart section
3. Remove and reconnect the wire leads at
thermal switch, confirm connections are tight
and not loose
4. Finger tighten; then 1/4 turn with wrench
5. Bleed the air from the gas line
6. Check with gas utility company
7. Check with gas utility company
8. Notify utility-install dirt trap in gas line
9. Locate source and correct
10. Replace thermostat
11. Clean, locate source and correct
12. Replace thermopile
13. See maintenance section for inspection and
cleaning of flame arrester
14. Clean filter, See "Cleaning the Combustion
Chamber and Flame-Arrestor" section.
15. Replace water heater, eliminate flammable
vapors source. Contact Technical Assistance.
16. Clean filter, See "External Inspection &
Cleaning of the Base-Ring Filter" section.
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 piping
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 piping
9. Check with gas utility company
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CORRECTIVE ACTION