Jest
* Mode: auto, cool, dry, fan and heat
* FAN: high, medium and low
* Over heat/cold protection for room coil pipe
* In heat mode, defrost according to temperature difference of inlet and outlet air
* Lack of cooling agent(liquid) protection.
* Out-door fan controlled by a standalone output to make defrost effect well
* Blow residual heat function
* 3 minutes protecting delay to restart compressor
* Panel control all function, LED digits display
* Avoid cold wind in heat mode
* Two temperature sensors
* Wind direction control
* Emergent on/off key
* Aux heater control
* Timer inline/offline
* Sleep
