LIMITED OPERATION BY TWIN AND GROUP COMBINATION
NOTES
Twin combination: The combination where 2 indoor units are installed for 1 outdoor unit.
Group combination: Operate air conditioners in more than one system (such as single combination and twin
combination) in same time.
Header unit: The representative unit during twin and group operation. Receive commands from remote controller
and transmit the commands to follower units.
(The header unit is indoor unit that receives START/STOP signal from the wireless remote controller.)
Follower unit: Indoor units other than the header unit are called follower unit.
Example of twin combination
Indoor
Outdoor
CAUTION
When using indoor unit in twin and group combination,
1. Hi POWER, ECO and QUIET operation will not function.
When Hi POWER or ECO or QUIET is transmitted from wireless remote controller, the receiving sound will be
heard from the indoor unit and display on the remote controller will also change. (
the indoor unit does not operate Hi POWER or ECO or QUIET. Restore the display on the remote controller
pushing Hi POWER or ECO or QUIET button.
2. Units other than the header unit cannot be operated with remote controller and the TEMPORARY
button.
When operating air conditioner with wireless remote controller, transmission should be sent to the header unit.
Header and follower units are decided through address setting upon installation. Follower unit will not receive
any signals from remote controller.
Air conditioner will not work even if the TEMPORARY button on the follower unit is pushed.
(Some follower units may receive SWING and FIX, but these operations are performed only on the unit that
received the signal.)
(When wireless remote controller is used, only the header unit receives SWING signal. If the SWING signal is
transmitted to follower unit, the sound to refuse receiving signal (3 beeps) is heard and the follower unit does
not receive the signal.
For FIX operation, both header and follower unit perform the operation by itself.
When wired remote controller is used, air flow direction can be changed on each unit by selecting the indoor
unit.)
3.
lamp lights up only on the header unit.
When the timer is set with wired remote controller, even the
EN
Indoor
Remote
controller
Example of group combination
Indoor
Remote
controller
Outdoor
lamp on the header unit will not light up.
7
Indoor
Outdoor
Control line
Other connecting line
see page 22.) However,
Indoor
Outdoor