diff --git a/interface/src/app/main/deviceValue.ts b/interface/src/app/main/deviceValue.ts
index 9078f0334..e03bf712c 100644
--- a/interface/src/app/main/deviceValue.ts
+++ b/interface/src/app/main/deviceValue.ts
@@ -36,7 +36,7 @@ export function formatValue(
     }
     return (
       (value as string) +
-      (uom === undefined || uom === 0 ? '' : ' ' + DeviceValueUOM_s[uom])
+      (value === '' || uom === undefined || uom === 0 ? '' : ' ' + DeviceValueUOM_s[uom])
     );
   }
 
diff --git a/interface/src/app/status/SystemLog.tsx b/interface/src/app/status/SystemLog.tsx
index 35b11dbf7..743ee3176 100644
--- a/interface/src/app/status/SystemLog.tsx
+++ b/interface/src/app/status/SystemLog.tsx
@@ -115,7 +115,7 @@ const SystemLog = () => {
     immediate: true,
     interceptByGlobalResponded: false
   })
-    .onMessage((message: { id: number; data: string }) => {
+    .onMessage((message: { data: string }) => {
       const rawData = message.data;
       const logentry = JSON.parse(rawData) as LogEntry;
       setLogEntries((log) => [...log, logentry]);
diff --git a/platformio.ini b/platformio.ini
index af964d982..9404a1777 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -42,7 +42,7 @@ build_flags =
   -D CONFIG_ASYNC_TCP_RUNNING_CORE=1 ; force async_tcp task to be on same core as Arduino app (default is any core)
   -D CONFIG_ASYNC_TCP_STACK_SIZE=6144 ; stack usage measured: ESP32: ~2.3K, ESP32S3: ~3.5k - (default is 16K)
   ; ESPAsyncWebServer
-  -D WS_MAX_QUEUED_MESSAGES=64
+  -D WS_MAX_QUEUED_MESSAGES=0 ; log messages are already queued in ems-esp
   -D CORE_DEBUG_LEVEL=0
 
 unbuild_flags =
diff --git a/src/core/locale_translations.h b/src/core/locale_translations.h
index cc8dabcea..bb6fcaa9c 100644
--- a/src/core/locale_translations.h
+++ b/src/core/locale_translations.h
@@ -764,6 +764,8 @@ MAKE_TRANSLATION(vacations7, "vacations7", "vacation dates 7", "Urlaubstage 7",
 MAKE_TRANSLATION(vacations8, "vacations8", "vacation dates 8", "Urlaubstage 8", "Vakantiedagen 8", "Semesterdatum 8", "urlop 8", "feriedager 8", "dates vacances 8", "izin günleri 8", "date vacanze 8", "termíny dovolenky 8", "data prázdnin 8")
 MAKE_TRANSLATION(absent, "absent", "absent", "Abwesend", "", "Frånvarande", "", "", "", "", "", "chýnajúci", "") // TODO translate
 MAKE_TRANSLATION(redthreshold, "redthreshold", "reduction threshold", "Absenkschwelle", "", "Tröskel för sänkning", "", "", "", "", "", "zníženie tresholdu", "") // TODO translate
+MAKE_TRANSLATION(solarinfl, "solarinfl", "solar influence", "Solareinfluß", "", "", "", "", "", "", "", "", "") // TODO translate
+MAKE_TRANSLATION(currsolarinfl, "currsolarinfl", "curent solar influence", "akt. Solareinfluß", "", "", "", "", "", "", "", "", "") // TODO translate
 
 MAKE_TRANSLATION(hpmode, "hpmode", "HP Mode", "WP-Modus", "Modus warmtepomp", "Värmepumpsläge", "tryb pracy pompy ciepła", "", "", "yüksek güç modu", "Modalità Termopompa", "Režim TČ", "režim tepelného čerpadla") // TODO translate
 MAKE_TRANSLATION(dewoffset, "dewoffset", "dew point offset", "Taupunktdifferenz", "Offset dauwpunt", "Daggpunktsförskjutning", "przesunięcie punktu rosy", "", "", "çiğ noktası göreli", "differenza del punto di rugiada", "posun rosného bodu", "offset rosného bodu") // TODO translate
diff --git a/src/devices/thermostat.cpp b/src/devices/thermostat.cpp
index 44d1dc2cb..8e74f3cdc 100644
--- a/src/devices/thermostat.cpp
+++ b/src/devices/thermostat.cpp
@@ -1112,6 +1112,7 @@ void Thermostat::process_RC300Monitor(std::shared_ptr<const Telegram> telegram)
     }
     has_update(telegram, hc->targetflowtemp, 4);
     has_update(telegram, hc->curroominfl, 27);
+    has_update(telegram, hc->currSolarInfl, 29);
     has_update(telegram, hc->coolingon, 32);
 
     add_ha_climate(hc);
@@ -1179,6 +1180,7 @@ void Thermostat::process_RC300Summer(std::shared_ptr<const Telegram> telegram) {
     has_update(telegram, hc->roominfluence, 0);
     has_update(telegram, hc->roominfl_factor, 1); // is * 10
     has_update(telegram, hc->offsettemp, 2);
+    has_update(telegram, hc->solarInfl, 3);
     if (!is_received(summer2_typeids[hc->hc()])) {
         has_update(telegram, hc->summertemp, 6);
         has_update(telegram, hc->summersetmode, 7);
@@ -2779,6 +2781,18 @@ bool Thermostat::set_redthreshold(const char * value, const int8_t id) {
     return false;
 }
 
+bool Thermostat::set_solarinfl(const char * value, const int8_t id) {
+    auto hc = heating_circuit(id);
+    if (hc == nullptr) {
+        return false;
+    }
+    float t;
+    if (Helpers::value2temperature(value, t)) {
+        write_command(summer_typeids[hc->hc()], 3, (int8_t)t, summer_typeids[hc->hc()]);
+        return true;
+    }
+    return false;
+}
 
 // set date&time as string dd.mm.yyyy-hh:mm:ss-dw-dst or "NTP" for setting to internet-time
 // dw - day of week (0..6), dst- summertime (0/1)
@@ -4710,6 +4724,8 @@ void Thermostat::register_device_values_hc(std::shared_ptr<Thermostat::HeatingCi
                               MAKE_CF_CB(set_redthreshold),
                               12,
                               22);
+        register_device_value(tag, &hc->solarInfl, DeviceValueType::UINT8, FL_(solarinfl), DeviceValueUOM::DEGREES, MAKE_CF_CB(set_solarinfl), -5, -1);
+        register_device_value(tag, &hc->currSolarInfl, DeviceValueType::UINT8, DeviceValueNumOp::DV_NUMOP_DIV10, FL_(currsolarinfl), DeviceValueUOM::DEGREES);
         break;
     case EMSdevice::EMS_DEVICE_FLAG_CRF:
         register_device_value(tag, &hc->mode, DeviceValueType::ENUM, FL_(enum_mode5), FL_(mode), DeviceValueUOM::NONE);
diff --git a/src/devices/thermostat.h b/src/devices/thermostat.h
index 19757d77d..a0bc6dff0 100644
--- a/src/devices/thermostat.h
+++ b/src/devices/thermostat.h
@@ -109,6 +109,8 @@ class Thermostat : public EMSdevice {
         uint8_t instantstart; // 1-10K
         uint8_t boost;
         uint8_t boosttime; // hours
+        int8_t currSolarInfl;
+        int8_t solarInfl;
 
         uint8_t hc_num() const {
             return hc_num_;
@@ -664,6 +666,7 @@ class Thermostat : public EMSdevice {
     bool set_switchProgMode(const char * value, const int8_t id);
     bool set_absent(const char * value, const int8_t id);
     bool set_redthreshold(const char * value, const int8_t id);
+    bool set_solarinfl(const char * value, const int8_t id);
 };
 
 } // namespace emsesp