26
TROUBLESHOOTING GUIDE
CONDITION
CAUSE
REMEDY
Leaking water.
Poorly sealed, hot or cold water
connections, gas control threads, relief
valve, or drain valve.
Tighten threaded connections.
Leakage from plumbing system or other
appliances.
Inspect plumbing system and other appliances.
Condensation.
Refer to
Condensation
.
Water drips from the relief
valve.
Heater stacking.
Lower gas control setting.
Excessive water pressure.
Install a pressure-reducing valve.
Thermal expansion in a closed water
system.
Install an expansion tank.
Improperly seated valve.
Check relief valve works properly and replace, if
necessary.
The gas control fails
to shut off.
Defective gas control.
Replace with new gas control.
Improper calibration.
Replace gas control.
Condensation.
Water heater filled for the first time.
Let water heater warm up. Problem should go away. If it
persists, check all plumbing connections for leaks.
Heavy draws of hot water with very cold
refill water.
Let water heater warm up. Problem should go away.
If it persists, check all plumbing connections for leaks.
Water heater is undersized.
Install size of water heater that meets demand.
Combustion odours.
Insufficient secondary air.
Provide fresh air ventilation.
Heater installed in a confined area.
Provide fresh air ventilation.
Flue clogged.
Clean. Check for source of trouble and correct.
Smoking and carbon formation
(sooting).
Insufficient secondary air.
Provide fresh air ventilation.
Low gas pressure.
Check with gas utility company.
Burner flame yellow, lazy.
Refer to
The burner flame is yellow and lazy
.
Flue clogged.
Clean. Check for source of trouble and correct.
Defective gas control.
Replace with new gas control.
Heater installed in a confined area.
Provide fresh air ventilation.
Smelly water.
High sulfate or mineral content in water.
Change magnesium anode to an aluminum anode and
bleach tank.
The access door temperature
high limit switch is tripping.
Not enough draft from the venting
system.
Check for any obstruction in the chimney. Ensure that the
chimney is sized and installed according to installation
instructions provided in this manual.
Not enough fresh air for the combustion.
Supply make-up air. Refer to installation instructions
provided in this manual.
Ambiant air temperature is too high.
Reduce ambiant air temperature.
Excessive dirt, dust or other debris
accumulation on the flame arrestor.
Clean the flame arrestor in the combustion chamber using a
stiff brush, compressed air and/or a vacuum cleaner.
