diff --git a/Thermo.Active.NC/NcAdapter.cs b/Thermo.Active.NC/NcAdapter.cs
index 7ef23791..790b3d0e 100644
--- a/Thermo.Active.NC/NcAdapter.cs
+++ b/Thermo.Active.NC/NcAdapter.cs
@@ -97,7 +97,12 @@ namespace Thermo.Active.NC
                 bool answ = false;
                 if (statusCmd.Count > 0)
                 {
-                    answ = checkBitOnWord(statusCmd[0], 7);
+                    try
+                    {
+                        answ = checkBitOnWord(statusCmd[0], 7);
+                    }
+                    catch
+                    { }
                 }
                 return answ;
             }
@@ -116,7 +121,12 @@ namespace Thermo.Active.NC
                 bool answ = false;
                 if (statusCmd.Count > 0)
                 {
-                    answ = checkBitOnWord(statusCmd[0], 8);
+                    try
+                    {
+                        answ = checkBitOnWord(statusCmd[0], 8);
+                    }
+                    catch
+                    { }
                 }
                 return answ;
             }