Diagnosed state water heater cleaned air intake screen which tripped thermal sensor relit and status light on control valve is now saying normal operation I am also waiting on prices for a gas control valve and thermal pile on state water heater as a possible back up plan I am waiting on Wilkinson to provide me with pricing when they get back to me I will re-open the invoice and email that third option to the customer so that we’re aware of what we’re looking at on next visit if need be Nick pleasants Morrisvile,NC