A.O. Smith TC-049-R2 Service Handbook, Residential Gas And Electric Water Heater, Test Condition

RESIDENTIAL GAS AND ELECTRIC WATER HEATER

SERVICE HANDBOOK

Residential Electric – continued

A-7 service – Voltage Checks “Lack of Hot Water” – continued

Test Condition

Lower tank water is at least 15°F below lower thermostat setting

Test between lower high limit 4 and lower thermostat 2 or lower high limit L4 and lower thermostat T2

If …	… then
proper voltage is not present:	•	check jumper between lower high limit
		2 and lower thermostat 1.
	•	replace lower thermostat.
proper voltage is present:	continue to next step.

Test between the terminals of the lower element

If …	… then
proper voltage is not present:	check wire connections to lower controls.
proper voltage is present:	conduct grounded element checks.

A.O. Smith Water Products Company	43	Training Department
©2002		Ashland City, Tennessee