74
Multi VRF Indoor
Unit Service Manual
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 failure, it
will be also under STOP state after the power supply is resumed.
DIP switch 2 (L/I):
Setting of the control mode through either the wired controller or the remote controller. When it is under
the wired controller mode, the “Setting of Momory Mode” of switch 1 and the “Setting of Master/Slave Unit” of
switch 3 can only be set through the wired controller; when it is under the remote controller, both two settings
can still be set through this function DIP switch S7.
DIP switch 3 (M/S):
The setting of master/save indoor unit is intended to set which units as the master units and which as
the slave units, mainly used to meet the needs of speical people given priority (e.g. leaders, patients, etc.). All
indoor units are factory defaulted to be master units, with this switch set to the “ON” position.
When all indoor units are set as the slave units, the mode of that who start first will always takes
always takes precedence.
When only one indoor unit is set as the master unit, no mater if it is firstly started or not, if its mode
case, it is easily understood that the mode of the master unit always takes precedence.
When several indoor units are set as master, the mode of master indoor unit with a lower address code
will be taken as the master run mode of the unit. when the master indoor unit with the lowest address code is
changed from STOP state to RUN state, the mode of other master indoor units or slave indoor units shall be
several master indoor units, the address code of the unit shall be set from lower to higher according to priority
level.
DIP switch 4 (I/O):
Setting of ambient temperature setpoint. This setting is mainly used when the temperature of air
conditioner area differs largely from the air inlet temperature of the unit. Meanwhile, this setting is only valid
when the receiver is connected, including the setting of temperature setpoint at air inlet and setting of the
temperature setpoint at receiver head. The factory default setting is setpoint of air inlet temperature,The DIP
switch is set to the “ON” position.
DIP switch 5 (L/H):
Setting of high / low static pressure fan. This setting includes the setting of high static pressure fan and low
static pressure fan, adjusted as needed for the project. The factory default setting is low static pressure fan,The
DIP switch is set to the “ON” position.
Cautions:
1) The above settings must be done under power OFF state.
Model Functional DIP switch
Four-position
Three-position
Five-position
Three-position function DIP switch (It is located on the switch board Z6N).
No function DIP switch (memory function, wireless control, master/slave
indoor unit setting are realized through the combined buttons
on the front panel of the unit)
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