TROUBLE SHOOTING
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.
Not enough or no hot water
1.Ensure that the electrical disconnect switch serving the water heater is in the “ON” position. The pilot switch(es) on the cabinet should also be in the on position. 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.
2.Check the fuses. The electrical disconnect switch usually contains fuses. The water heater has fuses located behind the cabinet front door. When replacing internal fuses in the water heater control panel, insure that the same type and size of fuse is used.
3.If the water was excessively hot and is now cold, the manual reset high limit may have operated.
To reset, turn off electricity and push the reset button. The high limit is located above the upper most heating element in the storage tank. On some high input models additional hi limits may be located behind the side access panel. Repeat operation of the high temperature
4.The capacity of the heater may have been exceeded by a large demand for hot water. 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. If the heater was installed in the summer when incoming water temperature was warm, colder ground water in the winter months can create the effect of less hot water.
6.Look for wasted hot water and leaking or open hot water faucets.
7.Sediment or lime scale may be affecting water heater operation. Refer to “Maintenance” for details.
Water is too hot
Refer to “Temperature Regulation” and reset the thermostat setpoint to a lower temperature that will meet requirements for hot water
Water heater makes sounds
1.Sediment or lime scale accumulation on the elements causes sizzling and hissing noises, when the heater is operating. If this occurs, the tank bottom and elements should be cleaned. Refer to “MAINTENANCE” for details.
2.Some of the electrical components of the water make sounds which are normal. Contactors will “click” or snap as the heater starts and stops. Transformers and contactors often hum.
Water leakage is suspected
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 if leaking, it may represent:
a.Excessive water pressure.
b.Excessive water temperature.
c.Faulty relief valve.
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