16. Electronic Function ............................................................................................................................... 181 
16.1 Abbreviation ............................................................................................................................. 181 
16.2 Display function ....................................................................................................................... 181 
16.3 Main Protection ........................................................................................................................ 181 
16.4 Operation Modes and Functions ............................................................................................. 183 
17. Troubleshooting ..................................................................................................................................... 196 
17.1 Indoor Unit Error Display ......................................................................................................... 197 
17.2 Error Display on Two Way Communication Wired Controller ................................................. 199 
17.3 Outdoor unit error display ........................................................................................................ 200 
For 9K-24K outdoor unit: ................................................................................................................. 200 
For 36K-60K Outdoor Unit ............................................................................................................... 201 
Outdoor check function .................................................................................................................... 201 
17.4 Diagnosis and Solution ............................................................................................................ 204 
17.5 Main parts check ..................................................................................................................... 241 
18. Disassembly Instructions ..................................................................................................................... 251 
18.1 Indoor unit ................................................................................................................................ 251 
18.2 Outdoor unit ............................................................................................................................. 273