diff --git a/MitsubishiHeavyHeatpumpIR.cpp b/MitsubishiHeavyHeatpumpIR.cpp
index 6d40afd..dbbcb84 100644
--- a/MitsubishiHeavyHeatpumpIR.cpp
+++ b/MitsubishiHeavyHeatpumpIR.cpp
@@ -250,6 +250,9 @@ void MitsubishiHeavyZMHeatpumpIR::send(IRSender& IR, uint8_t powerModeCmd, uint8
     case FAN_4:
       fanSpeed = MITSUBISHI_HEAVY_ZM_FAN4;
       break;
+    case FAN_5: //Eco mode
+      fanSpeed = MITSUBISHI_HEAVY_ZM_ECONO;
+      break;
   }
 
   if ( temperatureCmd > 17 && temperatureCmd < 31)
@@ -563,4 +566,4 @@ void MitsubishiHeavyZMPHeatpumpIR::sendMitsubishiHeavy(IRSender& IR, uint8_t pow
   // End mark
   IR.mark(MITSUBISHI_HEAVY_BIT_MARK);
   IR.space(0);
-}
\ No newline at end of file
+}