A.O. Smith TC-049R3 Service Handbook page 41

RESIDENTIAL GAS AND ELECTRIC WATER HEATER
Residential Electric – continued
C-2 service "No Hot Water" – continued
Test between the two element terminals
If ...
rated voltage is not present
rated voltage is present
Complaint: Water Too Hot
Conditions:
Tank water above thermostat setting +10°F
Power on
Test between 4 and 2 or L4 and T2
If ...
rated voltage is present
lower than rated voltage is present
no voltage is present
A.O. Smith Water Products Company
©2005
SERVICE HANDBOOK
... then
check wiring from control.
repeat Ohms resistance test of element
•
check for water leaks in piping or fixtures.
•
Voltage Check
... then
replace thermostat control.
test for grounded element.
test complete.
40
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Ashland City, TN