Dial-Up - Gree DC Inverter Multi VRF Service Manual

DC INVERTER MULTI VRF
Connection Schematics for Indoor / Outdoor Power Cords and Communication Line

9.4 Dial-up

Gree DC Multi VRF unit is provided with three dial-up, i.e. function dial-up, address dial-up and
capacity dial-up. ou may adjust the function dial-up to set the control, mode and functions of the
unit; adjust the address dial-up to set the matching relation between indoor unit and wired
controller; and adjust the capacity dial-up to set the capacity demands of the indoor unit.
9.4.1 Function Dial-up
The S7 function dial-up is located on the mainboard of indoor unit. It can be
CAUTIONS!
operated only when the client needs to change the default function settings; otherwise the default
position shall be maintained.
DIP
swicth
Functional description of function dial-up:
DIP swicth 1 (S/R): Setting of memory mode, including the standby mode and restoration mode.
The standby mode refers to that the previous parameters will be kept but the
unit will not run automatically after the power supply is resumed. This setting is
factory defaulted (DIP swicth pulled to "ON" position). For example, if the
parameters of an indoor unit set before power shutdown are High Fan and 24 ,
the unit will be under standby state after the power supply is resumed and after
the unit is manually started, the parameters will remain as High Fan and 24 .
The restoration mode refers to that not only the previous parameters will be kept,
but also that the unit can start automatically after the power supply is resumed.
But if the unit is under STOP state before power shutdown, it will be also under
STOP state after the power supply is resumed.
DIP swicth 2 (L/I): Setting of control mode, including wired control and remote control. The wired
control mode refers to that the indoor unit is controlled from wired controller
(wired controller). This setting is factory defaulted (DIP swicth pulled to "ON"
position). When the setting is wired control mode, the function dial-up on S7 for
"setting of memory mode" and "setting of master / slave indoor unit" will be
disabled. These two settings can be done from the wired controller directly. The
remote control mode refers to that the indoor unit is controlled from remote
controller. When the setting is remote control mode, its function dial-up must be
set on S7.
DIP swicth 3 (M/S): The setting of master / slave indoor unit refers to the master / slave setting of
indoor run mode, mainly used to meet the needs of special people on priority
(e.g. leader, patients, etc). The factory default setting is that all indoor units are
master (DIP swicth pulled to "ON" position).
When all the indoor units are set as slave, the outdoor unit will run according to
Functional dial switch S7
Functional Description:
Setting of memory
mode
Setting of control mode
Setting of master / slave
indoor unit
Setting of ambient
temperature acquisition
point
Setting of high / low
static pressure fan
Dial-up Setting
0 (ON Position)
Standby (S) Restore (R)
Wired control Remote
(L) control (I)
Master indoor Slave indoor
unit (M) unit (S)
Return air inlet
Receiver (O)
(I)
Low static
High static(H)
pressure (L)
INSTALLATION
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