RESIDENTIAL GAS AND ELECTRIC WATER HEATER
SERVICE HANDBOOK
Residential Electric – continued
C-2 service “No Hot Water” – continued
Test between the two element terminals
If … … then
rated voltage is not present check wiring from control.
rated voltage is present • repeat Ohms resistance test of element
• check for water leaks in piping or fixtures.
Complaint: Water Too Hot
Conditions:
Tank water above thermostat setting +10°F
Power on
Voltage Check
Test between 4 and 2 or L4 and T2
If … … then
rated voltage is present replace thermostat control.
lower than rated voltage is present test for grounded element.
no voltage is present test complete.
A.O. Smith Water Products Company Technical Training Department
©2005 Ashland City, TN
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