GREE Multi Variable Air Conditioners Indoor Unit
60
4 Introduction to Unit Functions
Function Application of IDUs
Indoor unit functions cover user operation functions and engineering application functions. For user
operation functions, refer to operating instructions of the IDU, wired controller, and remote controller.
Engineering application functions include:
Master IDU query and settings
Indoor unit project number query and settings
Engineering parameter query
Engineering parameter settings
Engineering application functions can be operated through the IDU wired controller (XK46 /XK49or
XK79) or remote controller (YV1L1, fittings selectable).
4.1 Engineering Application Functions Operated through the XK46
Wired Controller
4.1.1 Master IDU Settings
The master IDU can be set through the wired controller or remote controller. The methods for setting
the master IDU through the wired controller are as follows:
Method 1:
Step 1: Set an IDU to power-off status.
Step 2: Press and hold the "MODE" button on the wired controller for more than five seconds.