Fvir System Operational Checklist; Troubleshooting Checklist - A.O. Smith High Efficiency 100 series Installation Instructions 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. Two piece wire connector properly installed.
PROBLEM
BURNER WILL NOT IGNITE
PILOT WILL NOT LIGHT OR
REMAIN LIT
BURNER FLAME YELLOW-
LAZY
HIGH OPERATION COSTS
TROUBLESHOOTING CHART
POSSIBLE CAUSE(S)
1. Pilot will not light
2. Thermostat set too low
3. No gas
4. Dirt in the gas lines
5. Pilot line clogged
6. Main burner line clogged
7. Non-functioning gas control valve/thermo-
stat
8. Heater installed in a confined area
9. Flue Damper not functioning
1. Non-functioning Pilot\Igniter-Flame Sensor
2. The thermal switch tripped
3. Igniter wire connection loose
4. Air in gas line
5. Low gas pressure
6. No gas
7. Dirt in gas lines
8. Cold drafts
9. Thermostat ECO switch open
10. Pilot line or orifice clogged
11. Air for combustion obstructed
12. FV Senor Lockout
13. Flue Damper not functioning
1. Insufficient secondary air
2. Low gas pressure
3. Flue clogged
4. Flue damper partially open
5. Main burner line clogged
6. Heater installed in a confined area
7. Obstruction in main burner orifice
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
10. Flue Damper seal not functioning
5. No leaks at pilot and manifold connection.
6. Manifold door screws securely tightened.
7. Depress the button on the thermal switch
1. See PILOT WILL NOT LIGHT OR REMAIN
LIT
2. Turn temp. dial to desired temperature
3. Check with gas utility company
4. Notify utility-install trap in gas line
5. Clean, locate source and correct
6. Clean, locate source and correct
7. Replace gas control valve/thermostat
8. Provide fresh air ventilation
9. Cycle power to the water heater off and on. If
problem persists replace the flue damper
1. See Status Light Code Troubleshooting Table
section
2. See Pilot Light Troubleshooting Flowchart
section
3. Seat connector firmly in socket
4. Bleed the air from the gas line
5. Check with gas utility company
6. Check with gas utility company
7. Notify utility-install dirt trap in gas line
8. Locate source and correct
9. Replace thermostat
10. Clean, locate source and correct
11. See maintenance section for inspection and
cleaning of flame trap.
12. Contact a qualified person to reset the sensor
13. Cycle power to the water heater off and on. If
problem persists replace the flue damper
1. Provide ventilation to water heater
2. Check with gas utility company
3. Clean, locate source and correct
4. Cycle gas control valve/thermostat OFF then
ON. If problem persists replace damper
5. Clean, locate source and correct
6. Proper fresh air ventilation
7. Clean or replace orifice
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
10. Replace the flue damper
29
CORRECTIVE ACTION