320386-001 - AO Smith Water Heaters

FVIR System Operational Checklist1. Manifold gasket properly sealed.2. Viewport not damaged or cracked.3. Flame-arrestor free of debris and undamaged.4. Manifold component block properly installed.5. No leaks at pilot and manifold connection.6. Manifold door screws securely tightened.7. Depress the button on the thermal switchTROUBLESHOOTING CHARTPROBLEM POSSIBLE CAUSE(S) CORRECTIVE ACTIONBURNER WILL NOT IGNITE 1. Pilot not lit1. Light pilot2. Thermostat set too low2. Turn temp. dial to desired temperature3. Main burner line clogged3. Clean, locate source and correct4. Non-functioning thermostat 4. Test Gas Control Valve/Thermostat5. Base-Ring Filter blocked with lint/ 5. Clean filter, See “External Inspection &dustCleaning of the Base-Ring Filter” section.6. Heater installed in a confined area7. FVIR Flame Arrestor blocked withlint/dust.306. Provide fresh air ventilation7. Clean filter, See “Cleaning the CombustionChamber and Flame-Arrestor” section.SMELLY WATER 1. Sulfides in the water 1. Replace the anode with a special anodeBURNER FLAME YELLOW-LAZYPILOT WILL NOT LIGHT ORREMAIN LITHIGH OPERATION COSTS1. Insufficient combustion air2. Low gas pressure3. Water heater flue or vent systemblocked4. Main burner line clogged5. Base-Ring Filter blocked with lint/dust6. Heater installed in a confined area7. FVIR Flame Arrestor blocked withlint/dust.8. Obstruction in main burner orifice1. Non-functioning igniter2. The thermal switch tripped3. Wire lead connection at thermalswitch loose4. Thermopile connection loose5. Air in gas line6. Low gas pressure7. No gas8. Dirt in gas lines9. Cold drafts10. Thermostat temperature limit was exceeded.Status light will blink 4 flashes.11. Pilot line or orifice clogged12. Non-functioning thermopile13. Air for combustion obstructed14. FVIR Flame Arrestor blocked withlint/dust15. Flammable vapors incident, FVIRfunction actuated16. Base-Ring Filter blocked with lint/dust1. Thermostat set too high2. Sediment or lime in tank3. Water heater too small for job4. Wrong piping connections5. Leaking faucets6. Gas leaks7. Wasted hot water8. Long runs of exposed piping9. Hot water piping in exposed wallINSUFFICIENT HOT WATER 1. Thermostat set too low2. Sediment or lime in tank3. Water heater too small4. Wrong piping connections5. Leaking faucets6. Wasted hot water7. Long runs of exposed piping8. Hot water piping in outside wall9. Low gas pressure1. Provide ventilation to water heater2. Check with gas utility company3. Clean, locate source and correct4. Clean, locate source and correct5. Clean filter, See “External Inspection &Cleaning of the Base-Ring Filter” section.6. Proper fresh air ventilation7. Clean filter, See “Cleaning the CombustionChamber and Flame-Arrestor” section.8. Clean or replace orifice1. Replace igniter pilot assembly2. See Pilot Light Troubleshooting Flowchart section3. Remove and reconnect the wire leads atthermal switch, confirm connections are tightand not loose4. Finger tighten; then 1/4 turn with wrench5. Bleed the air from the gas line6. Check with gas utility company7. Check with gas utility company8. Notify utility-install dirt trap in gas line9. Locate source and correct10. Replace thermostat11. Clean, locate source and correct12. Replace thermopile13. See maintenance section for inspection andcleaning of flame arrester14. Clean filter, See “Cleaning the CombustionChamber and Flame-Arrestor” section.15. Replace water heater, eliminate flammablevapors source. Contact Technical Assistance.16. Clean filter, See “External Inspection &Cleaning of the Base-Ring Filter” section.1. Set temperature dial to lower setting2. Drain/flush-provide water treatment if needed3. Install adequate heater4. Correct piping-dip tube must be in cold inlet5. Repair faucets6. Check with utility-repair at once7. Advise customer8. Insulate piping9. Insulate piping1. Turn temperature dial to desired setting2. Drain/flush-provide water treatment if needed3. Install adequate heater4. Correct piping-dip tube must be in cold inlet5 Repair faucets6. Advise customer7. Insulate piping8. Insulate piping9. Check with gas utility company