Existing 50 gallon heater was not sending power to the top element because the reset button on the top thermostat tripped. Once I reset the reset button the top element had 240 volts as it should. Hot water has been restored to the home. Told the homeowner I don’t know how long this fix will last and if this issue occurs again in the near future the thermostats will have to be replaced. Still wrote multiple us for us to replace/repair the existing heater. Emailed copy of invoice/estimates to homeowners email.