Installation of (6) new water adjustment valves (2 valves in each tankless unit). Installed (4) of (6) water adjustment valves on the far right and middle unit Restored power and water to the units and they are both producing hot water at the time The far right unit tripped into an ER-445, after calling Navian they informed me to simply just restart the unit and see if it repopulates After restarting the unit could not get the er to replicate Once the valves for this left unit are in well will be back to replace Also talked to manager about the dishwasher and the possibility of adding a gasket seal to the door to prevent future issues with water leakage