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PROBLEM
POSSIBLE CAUSE(S)
CORRECTIVE
ACTION
THERMOSTAT
FALLS TO
Thermostat
not functioning properly
1.
Replace thermostat
SHUT-OFF
Improper calibration
2.
Replace thermostat
COMBUSTION
ODORS
Insufficient secondary air
1.
Provide ventilation to water heater. Check flue
way, flue baffle, and burner
Water
heater
flue
or
vent
system
2.
Clean, locate source and correct
blocked
Heater installed in a confined area
3.
Provide fresh air ventilation
Insufficient secondary air
SMOKING AND CARBON
FORMATION (SOOTING)
1,
2.
1.
2.
3.
1.
2.
3.
4.
5.
6.
1.
Low gas pressure
Water
heater
flue
or
vent
system
blocked
Thermostat
not functioning properly
Heater installed in a confined area
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 thermostat
5.
Provide fresh air ventilation
6.
See "Burner Flame Yellow-Lazy"
CONDENSATION
Temperature setting too low
1.
Increase the temperature setting.
Refer to the
"Condensation"
sub-section
of this manual's
Troubleshooting
Guide.
BURNER FLAME FLOATS
1.
Orifice too large
1.
Replace with correct orifice
AND LIFTS OFF PORTS
2.
High gas pressure
2.
Check with gas utility company
3.
Water
heater
flue
or
vent
system
3.
Clean flue and burner-locate source and correct
blocked
4.
Cold drafts
4.
Locate source and correct
BURNER FLAME TOO HIGH
1.
Orifice too large
1.
Replace with correct orifice
FLAME BURNS AT ORIFICE
1.
Thermostat
not functioning properly
1.
Replace thermostat
2.
Low gas pressure
2.
Check with gas utility company
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
36
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Table of Contents
Troubleshooting
