In this estimate we will have to open up the tankless unit run diagnosis and change out the high limit switch. After that is done we need to run a Descale flush on the unit. Check for any air codes and make sure everything functions properly. After installing the high limit switch and running the flash through the system we then reconnected everything opened up the valves and ran a full system test at the Fossett in the kitchen and fixtures in the bathrooms. Customer also did a few things with the Fossett to try and make an error code get sent off on the unit like it was doing before we ran the test two times and came to the end result that everything is functioning properly. Customer seems to be happy and satisfied with the work performed and we look forward to servicing them in the future.