Gree HOME GMV [104/367] Note during following connection of wirings pay special attention to them to avoid malfunction to units for electromagnetic interference ① keep the signal lines or wirings communication of region controller or wired controller at least 20 cm from the power cords or connecting lines between indoors and outdoors to prevent abnormal communication ② shielding twisted pair line must be adopted as signal line or wiring communication once the unit is installed in the place where there is serious electromagnetic interference

Gree HOME GMV [104/367] Note during following connection of wirings pay special attention to them to avoid malfunction to units for electromagnetic interference ① keep the signal lines or wirings communication of region controller or wired controller at least 20 cm from the power cords or connecting lines between indoors and outdoors to prevent abnormal communication ② shielding twisted pair line must be adopted as signal line or wiring communication once the unit is installed in the place where there is serious electromagnetic interference
Dc Inverter VRF plus Water Heater Solution Service Manual CONTROL
100
16 Set
“SET” blinks when the unit is on and commanded.
“SET” is displayed when the unit is on without command.
17 (set temp.)
Set temp. value is displayed when the selected indoor unit is on and not in
timer inquiry or setting status.
18 HR (hour) “HR” is displayed during timer inquiry or setting.
19 .5
“.5” is displayed when the timer time value includes 0.5 hr and the unit is
during timer inquiry or setting.
20
Setting temp. and
timer time
During timer inquiry, integer of setting time of timer is displayed.
During timer setting, integer of setting time of timer is displayed.
Set temp. value is displayed when the unit is not during timer inquiry or
setting.
Note:
Contents in the double quotation marks indicate the display in LCD. Following part is the same to it.
Online indoor units to Mini Centralized Controller indicate that in a region. Following part is the same to it.
No signal control function for region wired controller, and “SINGLE” won’t be displayed either.
5.4 Connection Between Region Controller and the Unit
Insert the 4-core twisted pair line to wired controller, if which is with the indoor unit, into region controller
wiring terminal CN1 (or CN2), and then connect the other wiring terminal CN2 (or CN1) with the main board of
indoor unit.
If there is no wired controller with indoor unit, introduce a 4-core twisted pair line to indoor unit main board and
connect it with region controller wiring terminal CN1 (or CN2).
NoteAny main board of the indoor unit controlled by the region controller can be connected. If the region
controller is used as a region wired controller, wired controller with the indoor unit must be removed.
Fig2.1 Power cords and communication lines for region controller
Before installation and connection, make sure the power supply is off. After installation and
connection, check the connection result again to prevent loose or short.
There are 4 connection lines (included in the 4-core twisted pair line) to the controller, from CN1 or
the upper and right CN2 to the upper they respectively are: Ground line (GND), communication
line A (A), communication line B(B) and power cord (+12 v).
Note:
During following connection of wirings, pay special attention to them to avoid malfunction to
units for electromagnetic interference.
Keep the signal lines or wirings (communication) of region controller or wired controller at
least 20 cm from the power cords or connecting lines between indoors and outdoors to prevent
abnormal communication.
Shielding twisted pair line must be adopted as signal line or wiring (communication) once
the unit is installed in the place where there is serious electromagnetic interference.

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