From 4755020730e30dcce72da8f877fb954dd5a7321e Mon Sep 17 00:00:00 2001
From: s0170071 <drk@posteo.de>
Date: Fri, 2 Oct 2026 18:08:03 +0200
Subject: [PATCH] Wechselrichter: Hybrid-Korrektur nicht erneut anwenden, wenn
 kein neuer Wert gesetzt wurde

---
 packages/modules/common/store/_inverter.py     |  6 +++++-
 .../modules/common/store/_inverter_test.py     | 18 ++++++++++++++++++
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/packages/modules/common/store/_inverter.py b/packages/modules/common/store/_inverter.py
index d7e28a996c..73219fcedb 100644
--- a/packages/modules/common/store/_inverter.py
+++ b/packages/modules/common/store/_inverter.py
@@ -1,3 +1,4 @@
+import copy
 import logging
 
 from control import data
@@ -33,10 +34,13 @@ def __init__(self, delegate: LoggingValueStore) -> None:
         self.delegate = delegate
 
     def set(self, state: InverterState) -> None:
+        self._raw_state = state
         self.delegate.set(state)
 
     def update(self) -> None:
-        state = self.fix_hybrid_values(self.delegate.delegate.state)
+        # Kopie, damit bei ausbleibendem set() (Lesefehler) die Hybrid-Korrektur nicht erneut auf den bereits
+        # korrigierten Wert angewendet wird.
+        state = self.fix_hybrid_values(copy.copy(self._raw_state))
         self.delegate.set(state)
         self.delegate.update()
 
diff --git a/packages/modules/common/store/_inverter_test.py b/packages/modules/common/store/_inverter_test.py
index 682c9ca2d8..9b66bd2414 100644
--- a/packages/modules/common/store/_inverter_test.py
+++ b/packages/modules/common/store/_inverter_test.py
@@ -50,3 +50,21 @@ def test_fix_hybrid_values(params):
 
     # evaluation
     assert vars(state) == vars(params.expected_state)
+
+
+def test_update_without_new_reading_does_not_apply_hybrid_fix_twice():
+    # setup
+    data.data.counter_all_data.data.get.hierarchy = HYBRID_HIERARCHY
+    data.data.bat_data["bat2"] = Mock(spec=Bat, data=Mock(
+        spec=BatData, get=Mock(spec=Get, currents=[0]*3, power=223, exported=100, imported=200)))
+    delegate = Mock(delegate=Mock(num=1))
+    purge = PurgeInverterState(delegate=delegate)
+    purge.set(InverterState(power=-5786, exported=200))
+
+    # execution
+    purge.update()
+    purge.update()  # Lesefehler: kein erneutes set()
+
+    # evaluation
+    state = delegate.set.call_args.args[0]
+    assert (state.power, state.exported) == (-6009, 300)