3.2 Comp Low- pressure Protection E3 .......................................................................................... 118 
3.3 Comp Discharge Temp Protection E4 ...................................................................................... 119 
3.4 Overload Protection of Compressor or Driver Error ................................................................. 120 
3.5 DC Fan Error EF ....................................................................................................................... 121 
3.6 Temperature Sensor Error ........................................................................................................ 121 
3.7 Communication Malfunction E6 ................................................................................................ 122 
3.8 Capacity Switch Error (Code:"C5") ........................................................................................... 123 
4 Diagnosis of Driving ............................................................................................................................ 124 
4.1 Diagnosis Flowchart of Driving of Single-phase Unit and Three-phase Unit ........................... 124 
5 Daily Maintenance and Repair ............................................................................................................ 129 
5.1 Daily Maintenance .................................................................................................................... 129 
5.2 Troubleshooting ........................................................................................................................ 130 
5.3 Repair ........................................................................................................................................ 131