Arrived on, 9-2-23 Seth-Call Out-Found unit on set at 10 but not boiling or calling for heat. Adjusted temp control now cycling on off and maintaining a boil at setting 8. Sys ops ok. Returned on, 9-7-23 Seth-Replaced temperature control board. Definitely had water damage. Advised customer to try to keep water away from controls. Tested unit and let it cycle on many different settings. Sys ops ok.