RESIDENTIAL GAS AND ELECTRIC WATER HEATER
SERVICE HANDBOOK
Residential Electric – continued
Power Enters High
Limit 1 and 3
Through High Limit
1, 2 and 3, 4
Through High Limit (2) Jumper
to Thermostat (1) Terminal
And High Limit (4) to Element
Thermostat 1, 2 is Closed
Element is “On”
Tank Water is Heated
Thermostat 1, 2 Opens
C-2 Circuit
Prior to 1996
After having confirmed that the water heater
has been installed per the installation
manual instructions:
C-2 Circuit
• Single element
• Single thermostat
• Single High Limit
A.O. Smith Water Products Company Technical Training Department
©2005 Ashland City, TN
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