TROUBLESHOOTING CHECKLIST
Before calling for service, check the following points to see if the cause of trouble can be identified and corrected. Reviewing this checklist may eliminate the need of a service call and quickly restore hot water service.
The illustration in the Features and Components section of this manual identifies the location of most of the heater components.
BE SURE TO TURN OFF THE ELECTRICITY (ELECTRICAL DISCONNECT SWITCH) WHEN CHECKING EQUIPMENT.
Not Enough or No Hot Water
1.Be certain the electrical disconnect switch serving the water heater is in the ON position. The pilot toggle switch on the cabinet should be ON.
In some areas water heater electrical service may be limited by the power company. If the heater operates on a controlled circuit, heater recovery may be affected.
The optional manual override switches on the cabinet front may be turned off,
2.Check the fuses.
The electrical disconnect switch usually contains fuses.
The water heater has fuses located behind the cabinet front door, see the Features and Components section on page 6 of this manual for their location.
3.If the water was excessively hot, and is now cold, the ECO high limit switch may have activated.
•See Temperature Regulation section on page 16 of this manual for more information on how to reset the ECO high limit controls.
Repeated activation of the ECO high limit switch should be investigated by a Qualified Service Agent.
4.The storage capacity and/or recovery rate of the water heater may have been exceeded by a large demand for hot water. See the Recovery Data tables in this manual on page 5.
Large demands require a recovery period to restore water temperature.
5.Cold incoming water temperature will lengthen the time required to heat water to the desired temperature.
6.If the water heater was installed when incoming water temperature was warm, colder water creates the effect of less hot water.
7.Sediment or lime scale may be affecting water heater operation. Refer to the MAINTENANCE section on page 30 of this manual for details.
HARD WATER
Where hard water conditions exist, water softening or the threshold type of water treatment is recommended. This will protect the dishwashers, coffee urns, water heaters, water piping and other equipment.
See the Maintenance Section in this manual on page 30 for sediment and lime scale removal procedures.
Water Is Too Hot
Refer to the TEMPERATURE REGULATION section of this manual.
Water Heater Makes Strange Sounds
1.Sediment or lime scale accumulations on the elements causes sizzling and hissing noises when the heater is operating.
The sounds are normal, however, the tank bottom and elements should be cleaned. Refer to MAINTENANCE section on page
30 of this manual for details.
2.Some of the electrical components of the water heater make sounds which are normal ie. contactors will “Click” or snap as the heater starts and stops.
Leakage Checkpoints
1.Check to see if the drain valve is tightly closed.
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 temperature and pressure relief valve.
Excessive water pressure is the most common cause of Temperature
Relief Valve leakage. Water supply systems may, because of code
requirements or such conditions as high line pressure, among others, have installed devices such as pressure reducing valves, check
valves, and back flow preventers. Devices such as these cause the
water system to be a closed system.
As water is heated, it expands (thermal expansion). In a closed system the volume of water will grow when it is heated. As the volume of
water grows there will be a corresponding increase in water pressure due to thermal expansion. Thermal expansion can cause intermittent
the valve due to excessive pressure build up. This condition is not covered under the limited warranty. The
A properly sized thermal expansion tank should be installed on all
closed systems to control the harmful effects of thermal expansion.
Contact a local qualified service agency to have a thermal expansion
tank installed.
4. Examine the flange area of the elements for gasket leakage.
Tighten the bolts or, if necessary, follow the WATER AND LIME SCALE REMOVAL procedure in the MAINTENANCE section on
page 30 of this manual to replace the gaskets.
IF YOU CANNOT IDENTIFY OR CORRECT THE SOURCE OF MALFUNCTION:
1.Place the water heater electrical disconnect switch in the OFF position.
2.Close the cold water inlet valve to the heater.
3.Call the toll free number on the back cover of this manual for further assistance.
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