diff --git a/AUXHeatpumpIR.cpp b/AUXHeatpumpIR.cpp
index f4db1e7..cc47b02 100644
--- a/AUXHeatpumpIR.cpp
+++ b/AUXHeatpumpIR.cpp
@@ -15,7 +15,7 @@ void AUXHeatpumpIR::send(IRSender& IR, uint8_t powerModeCmd, uint8_t operatingMo
   // Sensible defaults for the heat pump mode
 
   uint8_t powerMode = AUX_AIRCON1_MODE_ON;
-  uint8_t operatingMode = AUX_AIRCON1_MODE_HEAT;
+  uint8_t operatingMode = AUX_AIRCON1_MODE_AUTO;
   uint8_t fanSpeed = AUX_AIRCON1_FAN_AUTO;
   uint8_t temperature = 23;
   uint8_t swingV = AUX_AIRCON1_VDIR_MANUAL;
@@ -130,4 +130,4 @@ void AUXHeatpumpIR::sendAUX(IRSender& IR, uint8_t powerMode, uint8_t operatingMo
   // End mark
   IR.mark(AUX_AIRCON1_BIT_MARK);
   IR.space(0);
-}
\ No newline at end of file
+}