diff --git a/csharp/App/Backend/Services/AlarmKnowledgeBase.cs b/csharp/App/Backend/Services/AlarmKnowledgeBase.cs
index 32a11c495..e5b98f231 100644
--- a/csharp/App/Backend/Services/AlarmKnowledgeBase.cs
+++ b/csharp/App/Backend/Services/AlarmKnowledgeBase.cs
@@ -26,7 +26,7 @@ public static class AlarmKnowledgeBase
         if (GrowattAlarms.TryGetValue(normalized, out var growattDiag))
             return growattDiag;
 
-        // Try case-insensitive match for Sinexcel (alarm names may vary in casing)
+        // Try case-insensitive match for both Sinexcel and Growatt
         var lowerDesc = normalized.ToLowerInvariant();
         foreach (var kvp in SinexcelAlarms)
         {
@@ -34,6 +34,12 @@ public static class AlarmKnowledgeBase
                 return kvp.Value;
         }
 
+        foreach (var kvp in GrowattAlarms)
+        {
+            if (kvp.Key.ToLowerInvariant() == lowerDesc)
+                return kvp.Value;
+        }
+
         return null;
     }
 
diff --git a/csharp/App/Backend/Services/AlarmReviewService.cs b/csharp/App/Backend/Services/AlarmReviewService.cs
index 3ef284dbd..71c34f923 100644
--- a/csharp/App/Backend/Services/AlarmReviewService.cs
+++ b/csharp/App/Backend/Services/AlarmReviewService.cs
@@ -838,6 +838,22 @@ public static class AlarmReviewService
         foreach (var key in GrowattKeys)
             AppendEntry(sb, key, improved);
         sb.AppendLine("    };");
+        sb.AppendLine();
+
+        // Emit the lookup method so the generated file is self-contained and can fully replace AlarmKnowledgeBase.cs
+        sb.AppendLine("    public static DiagnosticResponse? TryGetDiagnosis(string alarmDescription)");
+        sb.AppendLine("    {");
+        sb.AppendLine("        if (string.IsNullOrWhiteSpace(alarmDescription)) return null;");
+        sb.AppendLine("        var normalized = alarmDescription.Trim();");
+        sb.AppendLine("        if (SinexcelAlarms.TryGetValue(normalized, out var s)) return s;");
+        sb.AppendLine("        if (GrowattAlarms.TryGetValue(normalized, out var g)) return g;");
+        sb.AppendLine("        var lower = normalized.ToLowerInvariant();");
+        sb.AppendLine("        foreach (var kvp in SinexcelAlarms)");
+        sb.AppendLine("            if (kvp.Key.ToLowerInvariant() == lower) return kvp.Value;");
+        sb.AppendLine("        foreach (var kvp in GrowattAlarms)");
+        sb.AppendLine("            if (kvp.Key.ToLowerInvariant() == lower) return kvp.Value;");
+        sb.AppendLine("        return null;");
+        sb.AppendLine("    }");
         sb.AppendLine("}");
 
         File.WriteAllText(CheckedFilePath, sb.ToString());