Single CAC Outdoor Unit
2. List of Functions
4
Standard Inverter - Synchro
 3 Phase Inverter - Synchro
Note
1. O : Applied, X : Not applied
Accessory model name : Installed at field, ordered and purchased separately by the corresponding model name, supplied with separate package.
• * : If outdoor side air temperature is low on cooling mode, outdoor unit controls the fan speed for continuous operation without the installation 
of additional accessory.
Category Functions
AUUW428D2
[UU43W U32]
AUUW488D2
[UU49W U32]
Reliability
Defrost / Deicing O O
High pressure switch X X
Low pressure switch X X
Phase protection O O
Restart delay (3-minutes) O O
Self diagnosis O O
Soft start O O
Convenience
Test function O O
Night Silent Operation O O
Peak Control X X
Mode Lock X X
Forced Cooling Operation 
(Outdoor Unit)
OO
Network 
function
Network solution(LGAP) O O
ODU Dry Contact X X
Device
AUUW428D2
[UU43W U32]
AUUW488D2
[UU49W U32]
Central Con- 
troller
AC Ez (Simple Controller) PQCSZ250S0 PQCSZ250S0
AC Ez Touch PACEZA000 PACEZA000
AC Smart IV X X
ACP IV X X
AC Manager IV X X
PI485 PMNFP14A1 PMNFP14A1
Installation
Y branch Accessory Accessory
Header branch Accessory Accessory
BNU (Building 
Network Unit)
LONWORKS Gateway X X
BACnet Gateway X X
Low Ambient Kit O (Logical operation*) O (Logical operation*)