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19.1.2. Automatic address setting for twin
and triple systems
Procedure:
Turn on the power supply for the indoor
and outdoor units.
Operation:
Automatic address setting will start 10 to
30 seconds after the power supply is
turned on, and will be completed after
about 1 minute.
If the power supplies for the indoor unit and outdoor unit cannot be
turned on at the same time, turn on the power supply for the outdoor
unit, the indoor unit which is connected to the remote control, and then
the other indoor units in that order.
If the order of turning on the power supply is incorrect, the master unit
setting may overlap. In such a case, turn on the power supplies for all
units in the correct order as given above, or carry out a twin/triple
automatic address reset (press dip switch 3 on the outdoor unit
continuously for 4 seconds or longer).
• • • • The indoor unit which is connected to the remote control will
have priority for becoming the master unit.
• • • • The master unit thermostat will be used as the indoor
temperature thermostat. If the master unit thermostat is
turned on, the slave unit thermostats cannot be adjusted
even if they happen to be on.
• • • • If address setting using the DIP switches is carried out after
automatic address setting has been carried out, use DIP
switch No. 3 (SW3) on the outdoor unit to carry out
automatic address resetting.
• • • • If you would like to designate a particular indoor unit as the
master unit because no master unit has been set, use the
DIP switches on the slave units to make setting.
If automatic address setting is carried out once and then the slave unit
address are set, the address will then be stored inside the EEPROM.
Thus it is not necessary to repeat automatic address setting if the
power is turned off and back on again.
19.1.3. DIP switch settings for twin/triple
slave unit addresses
Procedure:
Turn off the power supply, and then set
DIP switch 1-8 to ON.
The unit will become slave unit 1.
(Set DIP switches 1-1 and 1-8 both to
ON.
The unit will become slave unit 2.)
Turn on the power supply.
Operation:
The unit will operate as slave unit 1.
Automatic address setting is not carried
out at this time.
If the setting is made while the power is still turned on, it is easier to
mis-combine the setting with group settings. So, the setting should be
made while the power is turned off.
• • • • Only slave unit addresses can be set in this way. Master
unit setting is not possible.
• • • • If you make the DIP switch settings after the power has
been turned on, carry out twin/triple automatic address
resetting.
• • • • Be sure to set DIP switch 1-8 to ON when setting twin/triple
addresses. If DIP switch 1-1 is set to ON without setting 1-
8 to ON, group addresses will be set instead, and the
remote control open circuit error code (F26) will be
displayed.
19.1.4. Automatic address resetting for
twin/triple systems
• • • • This reset the current twin/triple
Function:
Procedure:
Press the ADDRESS RESET button SW3
(push button switch) on the outdoor unit
circuit board continuously until LEDs 2 to
8 on the outdoor unit circuit board are all
illuminated (takes approximately 3.5
seconds).
Operations:
The outdoor unit will reset the addresses
for the indoor units which it is connected
to, and will send an instruction to carry
out automatic address setting again. If
the indoor unit DIP switch have not been
manually set for twin/triple address
setting, the indoor units receive this
command and clear their existing settings
and carry out automatic address setting.
If an indoor unit has had its address set by the DIP switch (DIP switch
1-8 is ON), or if the remote control unit is connected to one of the
indoor unit, then the addresses for those indoor units cannot be reset.
43
addresses which have been set
automatically, and result in the
reoccurance of automatic twin/triple
address settings.
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