diff --git a/src/fsfw/devicehandlers/DeviceHandlerBase.cpp b/src/fsfw/devicehandlers/DeviceHandlerBase.cpp
index acb9e1d2..b725b186 100644
--- a/src/fsfw/devicehandlers/DeviceHandlerBase.cpp
+++ b/src/fsfw/devicehandlers/DeviceHandlerBase.cpp
@@ -1472,11 +1472,11 @@ void DeviceHandlerBase::performOperationHook() {}
 
 ReturnValue_t DeviceHandlerBase::initializeLocalDataPool(localpool::DataPool& localDataPoolMap,
                                                          LocalDataPoolManager& poolManager) {
-  if (thermalSet != nullptr) {
-    localDataPoolMap.emplace(thermalSet->thermalStatePoolId,
-                             new PoolEntry<DeviceHandlerIF::dh_thermal_state_t>);
-    localDataPoolMap.emplace(thermalSet->heaterRequestPoolId,
-                             new PoolEntry<DeviceHandlerIF::dh_heater_request_t>);
+  if (thermalStateCfg.has_value()) {
+    localDataPoolMap.emplace(thermalStateCfg.value().thermalStatePoolId,
+                             new PoolEntry<DeviceHandlerIF::dh_thermal_state_t>());
+    localDataPoolMap.emplace(thermalStateCfg.value().thermalRequestPoolId,
+                             new PoolEntry<DeviceHandlerIF::dh_heater_request_t>());
   }
   return returnvalue::OK;
 }
@@ -1490,11 +1490,12 @@ ReturnValue_t DeviceHandlerBase::initializeAfterTaskCreation() {
   this->poolManager.initializeAfterTaskCreation();
 
   if (thermalStateCfg.has_value()) {
-    ThermalStateCfg& val = thermalStateCfg.value();
-    thermalSet = new DeviceHandlerThermalSet(this, val.thermalSetId, val.thermalStatePoolId,
-                                             val.thermalRequestPoolId);
+    ThermalStateCfg& cfg = thermalStateCfg.value();
+    thermalSet = new DeviceHandlerThermalSet(this, cfg);
+  }
+  if (setStartupImmediately) {
+    startTransition(MODE_ON, getInitialSubmode());
   }
-  startTransition(MODE_ON, getInitialSubmode());
   return returnvalue::OK;
 }
 
diff --git a/src/fsfw/devicehandlers/DeviceHandlerThermalSet.h b/src/fsfw/devicehandlers/DeviceHandlerThermalSet.h
index 944d7c0f..49ebd5f4 100644
--- a/src/fsfw/devicehandlers/DeviceHandlerThermalSet.h
+++ b/src/fsfw/devicehandlers/DeviceHandlerThermalSet.h
@@ -7,27 +7,21 @@
 
 class DeviceHandlerThermalSet : public StaticLocalDataSet<2> {
  public:
-  DeviceHandlerThermalSet(
-      HasLocalDataPoolIF* hkOwner, uint32_t setId = DeviceHandlerIF::DEFAULT_THERMAL_SET_ID,
-      lp_id_t thermalStateId = DeviceHandlerIF::DEFAULT_THERMAL_STATE_POOL_ID,
-      lp_id_t heaterRequestId = DeviceHandlerIF::DEFAULT_THERMAL_HEATING_REQUEST_POOL_ID)
-      : DeviceHandlerThermalSet(hkOwner->getObjectId(), setId, thermalStateId, heaterRequestId) {}
+  DeviceHandlerThermalSet(HasLocalDataPoolIF* hkOwner, ThermalStateCfg cfg)
+      : DeviceHandlerThermalSet(hkOwner->getObjectId(), cfg) {}
 
-  DeviceHandlerThermalSet(
-      object_id_t deviceHandler, uint32_t setId = DeviceHandlerIF::DEFAULT_THERMAL_SET_ID,
-      lp_id_t thermalStateId = DeviceHandlerIF::DEFAULT_THERMAL_STATE_POOL_ID,
-      lp_id_t thermalStateRequestId = DeviceHandlerIF::DEFAULT_THERMAL_HEATING_REQUEST_POOL_ID)
-      : StaticLocalDataSet(sid_t(deviceHandler, setId)),
-        thermalStatePoolId(thermalStateId),
-        heaterRequestPoolId(thermalStateRequestId) {}
+  DeviceHandlerThermalSet(object_id_t deviceHandler, ThermalStateCfg cfg)
+      : StaticLocalDataSet(sid_t(deviceHandler, cfg.thermalSetId)),
+        thermalStatePoolId(cfg.thermalStatePoolId),
+        heaterRequestPoolId(cfg.thermalRequestPoolId) {}
 
   const lp_id_t thermalStatePoolId;
   const lp_id_t heaterRequestPoolId;
 
   lp_var_t<DeviceHandlerIF::dh_thermal_state_t> thermalState =
-      lp_var_t<DeviceHandlerIF::dh_thermal_state_t>(thermalStatePoolId, sid.objectId, this);
+      lp_var_t<DeviceHandlerIF::dh_thermal_state_t>(sid.objectId, thermalStatePoolId, this);
   lp_var_t<DeviceHandlerIF::dh_heater_request_t> heaterRequest =
-      lp_var_t<DeviceHandlerIF::dh_heater_request_t>(heaterRequestPoolId, sid.objectId, this);
+      lp_var_t<DeviceHandlerIF::dh_heater_request_t>(sid.objectId, heaterRequestPoolId, this);
 };
 
 #endif /* FSFW_DEVICEHANDLERS_DEVICEHANDLERTHERMALSET_H_ */