3WAY VRF SYSTEMControl Functions1 - 11234567892WAY VRF SYSTEMControl Functions1. CONTROL FUNCTIONS1. 1-21-31-51-131-191-231-271-291-321-381-391-412.3.4.5.6.Introduction .....................................................................................................................Selecting Outdoor Unit for Operation ...........................................................................Compressor Control .......................................................................................................Output of PCB ...............................................................................................................Outdoor Fan Control .....................................................................................................Outdoor Unit CCU (command controller unit) Control ..............................................7. Tube Refrigerant Recovery Control .............................................................................8.9.10.11.12.Oil Control ......................................................................................................................Defrost Control ..............................................................................................................Discharge Tube Accumulated Refrigerant Recovery Control ...................................Upper Current Limitation Mode (Demand control) .....................................................Backup Operation .........................................................................................................1-451-471-4913.14.15.Other Functions ............................................................................................................Detailed Settings in EEPROM of Outdoor Unit ...........................................................Outdoor Unit Control PCB ............................................................................................ContentsContents