diff --git a/power-supply/power_supply.cpp b/power-supply/power_supply.cpp
index fdb1227..b61d7e5 100644
--- a/power-supply/power_supply.cpp
+++ b/power-supply/power_supply.cpp
@@ -119,7 +119,7 @@
 
             checkInputFault(statusWord);
 
-            if (powerOn)
+            if (powerOn && !vinUVFault && !inputFault)
             {
                 checkFanFault(statusWord);
                 checkTemperatureFault(statusWord);