clean burner, replace safety sensor thermo couple Upon arrival customer made me aware that she had no hot water from a water heater that was manufactured 17 March in 2020 all symptoms pointed to a bad thermocouple, so I gave the customer that upfront price and we made the repair after the repair was made the pilot light was still not hold it is believe this to be the bad batch of Rheem water heater control valves on Monday morning I will be ordering a control valve under the customers name under warranty to our shop and once I come back and do the install of the Cost of the thermal couple will be credited towards control valve replacement, water heater flush and cleaning of the burner assembly Nick pleasants Durham,nc