diff --git a/packages/modules/smarthome/nxdacxx/watt.py b/packages/modules/smarthome/nxdacxx/watt.py
index b440f1c72..17809ca98 100644
--- a/packages/modules/smarthome/nxdacxx/watt.py
+++ b/packages/modules/smarthome/nxdacxx/watt.py
@@ -37,7 +37,7 @@
 with open(file_stringcount5, 'w') as f:
     f.write(str(count5))
 modbuswrite = 0
-if dactyp == 3:
+if (dactyp == 3) or (dactyp == 1):
     neupower = uberschuss + aktpoweralt
 else:
     neupower = uberschuss