diff --git a/src/main/resources/static/dashboard/data_manager.js b/src/main/resources/static/dashboard/data_manager.js
index 889ac2a..7fe0fe8 100644
--- a/src/main/resources/static/dashboard/data_manager.js
+++ b/src/main/resources/static/dashboard/data_manager.js
@@ -151,14 +151,15 @@ class DataManager {
             }).done(function(data) {
                 dataManager.copperValues = JSON.parse(data);
                 dataManager.copperStatus='OK';
-                window.document.body.style='border-top: 1px solid green; margin: 1px'
                 if (!this.editable) {
                     dataManager.refreshUI();
                 }
             }).fail(function() {
                 dataManager.copperStatus='KO';
-                window.document.body.style='border-top: 10px solid red; margin: 0px'
                 console.log("ERROR: Copper values /ws/values read failed.");
+                if (!this.editable) {
+                    dataManager.refreshUI(); // Refresh with old values but with copperStatus KO
+                }
             });
         }
 
diff --git a/src/main/resources/static/dashboard/widgets.js b/src/main/resources/static/dashboard/widgets.js
index 85276de..141c645 100644
--- a/src/main/resources/static/dashboard/widgets.js
+++ b/src/main/resources/static/dashboard/widgets.js
@@ -97,6 +97,7 @@ class UIWidgetRunnable extends UIWidget {
             return {"id":-1,"key":"UNKNOWN","value":"?","timestampFrom":"1980-01-01T00:00:00","timestampTo":"3000-12-31T01:00:00","nbValues":1};
         }
         var widget = this.widget;
+        var copperStatus = dataManager.copperStatus;
 
 		try {
 			return eval(expression);