20
TROUBLESHOOTING GUIDE
CONDITION
CAUSE
REMEDY
Insufficient hot water.
Low gas pressure.
Check with gas utility company.
Wrong piping connections.
Correct piping, dip tube must be in cold inlet.
Sediment or lime in tank.
Drain. Check to see if water treatment is necessary.
Water heater is undersized.
Install the size of water heater that meets
the demand.
Gas control valve set too low.
Turn temperature knob to desired temperature.
Leaking faucets.
Repair faucets.
Wasted hot water.
Advise consumer.
Long runs or exposed piping.
Insulate piping.
Hot water piping on outside wall.
Insulate piping.
Slow hot water recovery.
Insufficient secondary air.
Check that the vent-air intake terminal is not blocked.
Low gas pressure.
Check with gas utility company.
Gas control valve set too low.
Turn temperature dial to desired temperature.
Improper calibration.
Replace gas control valve.
Flue clogged.
Clean. Check for source of trouble and correct.
Water heater is undersized.
Install size of water heater that meets demand.
Wrong piping connection.
Correct piping, dip tube must be in cold inlet.
Wasted hot water.
Advise consumer.
Leaking water.
Poorly sealed, hot or cold water connections,
Tighten threaded connections.
gas control valve threads, relief valve,
or drain valve.
Leakage from plumbing system or
Inspect plumbing system and other appliances.
other appliances.
Condensation.
Refer to
Condensation
.
Water drips from the
Heater stacking.
Lower gas control valve setting.
relief valve.
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 valve fails
Defective gas control valve.
Replace with new gas control valve.
to shut-off.
Improper calibration.
Replace gas control valve.
