- When making the replacement of units of master and slave 
etc.
1.2. Caution during test operation
Do not touch the remote control button and do not change any wirings for one minute when the 
main power supply switch is ‘on’. / (Because the unit is having automatic address setting during 
the first one minute.)
1.3. Caution during automatic address setting
When the main power supply switch is ‘on’, the P.C. board will automatically memorize the 
connecting system. / Consequently, when initial power supply is ‘on’, there mustn’t be any 
interchanging of units even of the same type and same 
capacity unit. / Therefore, connection of the unit to another system is prohibited.
2. FEATURES
2.1. Variety of excellent features
- Compact design /  Compact design 240 mm height, 840 mm width 
and 840 mm depth. (3 HP unit body)
- Automatic restart function / When the electric power resumes after 
a power failure, the unit will automatically restarts the operation in 
the pre-failure mode.
- Auto fan mode (indoor unit) / Auto fan mode is added besides HI, 
ME and LO. / It automatically adjusts the fan speed according to 
the indoor temperature.
- Dry mode function / Dry mode can make a comfortable indoor 
environment during wet season.
- Quiet operation / The sound level is 41dB (A) for 28BB model 
during High Fan speed and suitable for offices, shops, homes etc, 
when quiet operation is essential.
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