diff --git a/Python_script/VNA.py b/Python_script/VNA.py
index dafa59eae3471db2bd469338631ea678723a0d43..35d240c92301ac49e6d56a4d634bcdc6cef3fa82 100755
--- a/Python_script/VNA.py
+++ b/Python_script/VNA.py
@@ -230,10 +230,8 @@ class Vna:
         #wait until finished
         self.vna.query('*OPC?')
         
-    # method to reset status regsisters and queues of VNA, Michael  
+    # reset status registers and queues of the VNA
     def reset_status(self):
-        
-        # reset status byte, standard event register, clear output buffer and error buffer, Michael
         self.vna.write('*CLS')
     
     def close(self):
diff --git a/Python_script/VNA_dummy.py b/Python_script/VNA_dummy.py
index 69260881b8b9cf1149e6f02f12ea365906f370a3..ab2e3178e2a0f5816267aac5bcd80247a73cd7d1 100644
--- a/Python_script/VNA_dummy.py
+++ b/Python_script/VNA_dummy.py
@@ -153,3 +153,6 @@ class VnaDummy:
 
     def do_single_sweep(self):
         pass
+
+    def reset_status(self):
+        pass
diff --git a/Python_script/climate_chamber.py b/Python_script/climate_chamber.py
index 1a2eb8dca9d91e489e34a7e3c4b45c3753cdf69b..3512e434d410d6d710a324dd43cee781b0f9db64 100755
--- a/Python_script/climate_chamber.py
+++ b/Python_script/climate_chamber.py
@@ -248,7 +248,6 @@ class ClimateChamber:
             time.sleep(10)
             break
     
-    # request percentage temperature heater, humidity heater from climate chamber, Michael 
     def get_heater_percentage(self):
         
         response = self.chamber.query("%?", delay=MONITOR_COMMAND_DELAY)
diff --git a/Python_script/climate_chamber_dummy.py b/Python_script/climate_chamber_dummy.py
index 3b62f3531224aa71e550d525263cb45ad58d9abc..e98f919fecc733297484e86603112b1c1201d2a9 100644
--- a/Python_script/climate_chamber_dummy.py
+++ b/Python_script/climate_chamber_dummy.py
@@ -161,3 +161,7 @@ class ClimateChamberDummy:
 
     def __del__(self):
         self.close()
+
+    def get_heater_percentage(self):
+        return 0.0, 0.0
+