don't show boiler details if it isnt connected

src/ems-esp.cpp

@@ -270,6 +270,9 @@ void showInfo() {
     }
 
     myDebug_P(PSTR(""));
+
+    // show boiler stats if connected
+    if (ems_getBoilerEnabled()) {
         myDebug_P(PSTR("%sBoiler stats:%s"), COLOR_BOLD_ON, COLOR_BOLD_OFF);
 
         // version details
@@ -362,6 +365,7 @@ void showInfo() {
                       (EMS_Boiler.UBAuptime % 1440) / 60,
                       EMS_Boiler.UBAuptime % 60);
         }
+    }
 
     // For SM10/SM100/SM200 Solar Module
     if (ems_getSolarModuleEnabled()) {