diff --git a/power-supply/power_supply.cpp b/power-supply/power_supply.cpp
index 15fc432..b26c96b 100644
--- a/power-supply/power_supply.cpp
+++ b/power-supply/power_supply.cpp
@@ -154,7 +154,7 @@
 
             checkInputFault(statusWord);
 
-            if (powerOn && !faultFound)
+            if (powerOn && (inputFault == 0) && !faultFound)
             {
                 checkFanFault(statusWord);
                 checkTemperatureFault(statusWord);