Commissioning - aquatermic XK49 Manual Del Usuario

3.1.5 Disassembly
Fig. 3.15 Disassembly diagram of wired controller

3.2 Commissioning

3.2.1 Set Master Indoor Unit
Under Off status, long press MODE button for 5s to set the corresponding indoor
unit of wired controller as master indoor unit. "MASTER" icon will be light after
finishing setting.
Note::
① If there is a master indoor unit in a system, other slave indoor units can be
set as master unit, in which case, the original master unit will become a
slave unit.
② In one system, only one set of master indoor unit is allowed. If system
detects that there are several master units, it will designate the unit with the
smallest project number as a master unit.
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Wired Controller XK49