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5 Introduction of DIP Switch
5.1 Function DIP Switch S7
CAUTION !
Functional DIP switch S7 is located on the mainboard of the indoor unit. It is operated when the user
needs to change the default setting.
Functional DIP switch S7
DIP switch
Functional description:
DIP switch setting
0 (ON Position)
1
1(S / R)
Setting of memory mode
Standby (S)
Restore (R)
2(L / I)
Setting of control mode
Wired control (L)
Remote control (I)
3(M / S)
Setting of master/Slave indoor unit
Master indoor unit (M)
Slave indoor unit (S)
Functional description of function DIP switch:
DIP switch 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 DIP switch is factory defaulted to be at the “ON” position. For
example, if the parameters of an indoor unit set before power shutdown are High Fan and 24°C,
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°C. 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 (eg.
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 precedence. If its mode conflicts with that of the unit started later, then the unit started later
will raise a conflict mode error and stop working. In this case, it is easily understood that the mode
of the unit which starts first 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 conflicts with that of any slave unit, then this slave unit will raise a mode conflict error and
stop working. In this case, it is easily understood that the mode of the master unit always takes
