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CONTROL
2) Cool/Heat Switching Setting
There are the following 5 methods to switch between cooling and heating.
The indoor unit remote controller sets cooling or heating for individual outdoor unit system.
The cool/heat selector sets cooling or heating for individual outdoor unit system.
The indoor unit remote controller sets cooling or heating for multiple outdoor unit systems collectively
in accordance with the collective master outdoor unit.
The cool/heat selector sets cooling or heating for multiple outdoor unit systems collectively in accor-
dance with the collective master outdoor unit.
The cool/heat central controller sets cooling or heating for the outdoor unit systems collectively for
each outdoor external control adapter.
The following is the explanation of each method.
The indoor unit remote controller sets cooling or heating for individual outdoor unit system.
(Refer to P145 for setting of check code No.81.)
1) It does not matter whether there is a wiring between outdoor units or not.
2) Set the master control to "Indoor unit" by setting #1pin to "OFF" in the check code No.81.
3) Set the master control to "Individual setting" by setting #2 and #3 pins to "ON" in the check code No.81.
The cool/heat selector sets cooling or heating for individual outdoor unit system.
(Refer to P145 for setting of check code No.81.)
1) It does not matter whether there is a wiring between outdoor units or not.
2) Set the master control to "Outdoor unit" by setting #1pin to "ON" in the check code No.81.
3) Set the master control to "Individual setting" by setting #2 and #3 pins to "ON" in the check code No.81.
The indoor unit remote controller sets cooling or heating for multiple outdoor unit systems collectively
in accordance with the collective master outdoor unit. (Refer to P145 for setting of check code No.81.)
1) Install the outdoor external control adapter (sold separately) on either of the outdoor-outdoor or indoor-outdoor
transmission line.
2) Set SS2 of the outdoor external control adapter to "OFF".
3) Make the desired outdoor unit "Master collective" and other outdoor units "Dependent collective" by setting #2
and #3 pins in the check code No. 81.
4) Set the master control of the outdoor unit designated as "Master collective" to "Indoor unit" by setting #1pin to
"OFF" in the check code No.81.
5) Set SS 1 of the outdoor external control adapter to "BOTH" (factory setting) or "C/H", and set SS 2 to "OFF"
(factory setting).
The cool/heat selector sets cooling or heating for multiple outdoor unit systems collectively in accordance
with the collective master outdoor unit. (Refer to P145 for setting of check code No.81.)
1) Add the following items to "The indoor unit remote controller sets cooling or heating for multiple outdoor
unit systems collectively in accordance with the collective master outdoor unit." shown above.
Install the cool/heat selector on the collective master outdoor unit.
Set the master control of the outdoor unit designated as "Master collective" to "Outdoor unit" by setting #1pin
to "ON" in the check code No.81.
The cool/heat central controller sets cooling or heating for the outdoor unit systems collectively for each
outdoor external control adapter. (Refer to P145 for setting of check code No.81.)
1) Install the outdoor external control adapter (sold separately) on any of the outdoor-outdoor, indoor-outdoor or
indoor-indoor transmission line.
2) Set all the outdoor units to "Dependent collective" by setting #2 pin to "OFF" and #3 pin to "ON" in the check
code No.81.
3) Set SS 1 of the outdoor external control adapter to "BOTH" (factory set) or "C/H", and set SS 2 to "ON".
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