15
WATER HEATER MAKES NOISE
1. Sediment or lime scale accumulations cause noises when the
heater is operating.
• The sounds are normal, however, the tank bottom should
be cleaned. Refer to MAINTENANCE for details.
2. Some of the electrical components of the water heater make
sounds, which are normal.
• Contacts click or snap as the heater starts and stops.
• Transformers often hum.
WATER LEAKAGE IS SUSPECTED
1. Check to see if the water heater drain valve is tightly closed.
Also check the cleanout-opening plug for leakage.
2. The apparent leakage may be condensation, which forms on
cool surfaces of the heater and piping.
3. If the outlet of the relief valve is leaking it may represent:
• Excessive water pressure.
• Excessive water temperature.
• Faulty relief valve.
Excessive water pressure is the most common cause of relief
valve leakage. It is often caused by a “closed system”. If a
check valve is in the inlet system it will not permit the expanded
hot water volume to equalize pressure with the main. The
relief valve must release this water or the water heater or
plumbing system will be damaged.
When such a condition is encountered, local codes or
inspection agency should be consulted to determine which
system is acceptable in your area. These may consist of:
• Installation of a second relief valve with lower setting than
the primary relief valve.
• An expansion tank of suitable size and pressure rating and
provision to avoid water logging.
REPLACEMENT PARTS
Replacement parts may be ordered through authorized servicers
or distributors, refer to your local Yellow Pages for where to call
or contact A. O. Smith Water Products Company, 5621 W. 115
th
Street, Alsip, Illinois, 60803, 1-800-433-2545. When ordering
parts, be sure to state the quantity, part number and description
of the item including the complete model and serial number as it
appears on the product. Refer to the parts list for more information.
REPLACEMENT PARTS
For additional troubleshooting information, refer to the power
burner manual.
