238-47104-00A - Bradford White

SERVICE PROCEDURE RE-IIHeating Element TestingTesting For Open Or Burned Out Element.Step 1. TURN OFF POWER TO WATER HEATER.Step 2. Remove access cover(s) from front of waterheater. Remove insulation and plastic coverfrom thermostat.WARNINGHigh voltage exposure. Be sure power is turnedOFF to water heater prior to performing thisprocedure.Step 3. Disconnect wires from heating element.Step 4. Set multi-meter to “ohms” setting.Step 5. Touch probes of multi-meter to screwterminals of heating element(see illustration 4).Step 6. Reading should be 12.8 ohms (±6%) for a 240volt, 4500 watt element:Ohms = Volts 2WattsA reading outside the range using the formulaabove (±6%), indicates a bad element and theelement must be replaced.Meter ProbeElement Screw TerminalsIllustration 4Testing For Heating Element Short Circuit ToGround.Step 1. TURN OFF POWER TO WATER HEATER.Step 2. Remove access cover(s) from front of waterheater. Remove insulation and plastic coverfrom thermostat.Step 3. Disconnect wires from heating element.Step 4. Set multi-meter to “ohms” setting.Step 5. Touch one probe of multi-meter to either screwterminal of heating element and the other onthe element flange (see illustration 5). Thereshould be no reading on the ohm meter. Anyreading indicates a grounded element and theelement must be replaced. Repeat this step forthe other screw terminal.Element Screw TerminalMeter ProbeElement FlangeIllustration 5Page 1515