It can control indoor&outdoor fan speed,electric heater,compressor,valve, sweep etc ... or VFD f. It can control indoor&outdoor fan speed,electric heater,compressor,valve, sweep etc. g. ... outdoor controller h. It can run cool,heat,fan,dehumidify,save,forcing mode i. It has timer ... It has 3minutes compressor,sensor fault, anti-cool-fan,defrosting,overload,over voltage,over pressure protection etc. ...