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Download A.O. Smith FPSH - 75 Technical information
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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: proper voltage is present: check jumper between lower high limit 2 and lower thermostat 1. • replace lower thermostat. continue to next step. • Test between the terminals of the lower element If … … then proper voltage is not present: proper voltage is present: A.O. Smith Water Products Company ©2005 check wire connections to lower controls. conduct grounded element checks. 50 Technical Training Department Ashland City, TN
