The complaint is that wires are disconnected from the water heater and it is not heating We found that it is a 40 gallon natural gas water heater that is 4 years old We found that the wires for the thermal pile assembly have been ripped off of the heater and 1 of the wires is completely missing I’d recommend replacing the gas control valve and burner assembly Or replacing the water heater We will have to order the gas control valve and burner assembly if the repair is chosen Job not complete