diff --git a/typescript/frontend-marios2/src/content/dashboards/SodiohomeInstallations/SodistoreHomeConfiguration.tsx b/typescript/frontend-marios2/src/content/dashboards/SodiohomeInstallations/SodistoreHomeConfiguration.tsx
index e6fbe1582..de4c2ef21 100644
--- a/typescript/frontend-marios2/src/content/dashboards/SodiohomeInstallations/SodistoreHomeConfiguration.tsx
+++ b/typescript/frontend-marios2/src/content/dashboards/SodiohomeInstallations/SodistoreHomeConfiguration.tsx
@@ -46,19 +46,16 @@ function SodistoreHomeConfiguration(props: SodistoreHomeConfigurationProps) {
   const device = props.installation.device;
 
   const OperatingPriorityOptions =
-    device === 3 // Growatt
+    device === 3 || device === 4
       ? ['LoadPriority', 'BatteryPriority', 'GridPriority']
-      : device === 4 // Sinexcel
-        ? [
-          'SpontaneousSelfUse',
-          'TimeChargeDischarge',
-          // 'TimeOfUsePowerPrice',
-          // 'DisasterStandby',
-          // 'ManualControl',
-          'PvPriorityCharging',
-          // 'PrioritySellElectricity'
-        ]
-        : [];
+      : [];
+
+  // Sinexcel S3 stores WorkingMode enum names — map them to Growatt-style display names
+  const sinexcelS3ToDisplayName: Record<string, string> = {
+    'SpontaneousSelfUse': 'LoadPriority',
+    'TimeChargeDischarge': 'BatteryPriority',
+    'PvPriorityCharging': 'GridPriority',
+  };
 
   const [errors, setErrors] = useState({
     minimumSoC: false,
@@ -81,11 +78,17 @@ function SodistoreHomeConfiguration(props: SodistoreHomeConfigurationProps) {
   const { currentUser, setUser } = context;
   const { product, setProduct } = useContext(ProductIdContext);
 
+  // Resolve S3 OperatingPriority to display index (Sinexcel uses different enum names)
+  const resolveOperatingPriorityIndex = (s3Value: string) => {
+    const displayName = device === 4 ? (sinexcelS3ToDisplayName[s3Value] ?? s3Value) : s3Value;
+    return OperatingPriorityOptions.indexOf(displayName);
+  };
+
   const [formValues, setFormValues] = useState<Partial<ConfigurationValues>>({
     minimumSoC: props.values.Config.MinSoc,
     maximumDischargingCurrent: props.values.Config.MaximumChargingCurrent,
     maximumChargingCurrent: props.values.Config.MaximumDischargingCurrent,
-    operatingPriority: OperatingPriorityOptions.indexOf(
+    operatingPriority: resolveOperatingPriorityIndex(
       props.values.Config.OperatingPriority
     ),
     batteriesCount: props.values.Config.BatteriesCount,
@@ -113,7 +116,7 @@ function SodistoreHomeConfiguration(props: SodistoreHomeConfigurationProps) {
     minimumSoC: props.values.Config.MinSoc,
     maximumDischargingCurrent: props.values.Config.MaximumChargingCurrent,
     maximumChargingCurrent: props.values.Config.MaximumDischargingCurrent,
-    operatingPriority: OperatingPriorityOptions.indexOf(
+    operatingPriority: resolveOperatingPriorityIndex(
       props.values.Config.OperatingPriority
     ),
     batteriesCount: props.values.Config.BatteriesCount,
@@ -529,10 +532,10 @@ function SodistoreHomeConfiguration(props: SodistoreHomeConfigurationProps) {
                 </div>
               </>
 
-              {/* --- Sinexcel + TimeChargeDischarge --- */}
+              {/* --- Sinexcel + BatteryPriority (maps to TimeChargeDischarge on device) --- */}
               {device === 4 &&
                 OperatingPriorityOptions[formValues.operatingPriority] ===
-                'TimeChargeDischarge' && (
+                'BatteryPriority' && (
                   <>
                     {/* Power input*/}
                     <div style={{ marginBottom: '5px' }}>