... In heat mode, defrost according to temperature difference of inlet and outlet air3. Out-door fan controlled by a standalone output ... agent(liquid) protection.7. Mode: auto, cool, dry, fan and heat8. Avoid cold wind in heat mode9. FAN: high, medium ... Emergent on/off key14. Aux heater control 15.Timer inline/offlinePictures Universal air conditioning control with LCD display for cabinet air conditioner ( ...