Arrived at location on 5/19/22 - Checked over unit. Found pilot low and thermocouple burnt. Pulled pilot to clean and found it would not go back on due to corrosion on feral and threads on pilot. Will need new pilot and thermocouple ordered. Returned to location on 6/2/22 - Replaced pilot and thermocouple. Checked for leaks and found none. Tested and found all operational at this time.