Specifications

1817
Operation
lamp
Inspection
display
Unit No.
Malfunction
code
Nature of malfunction
Blinking Blinking Blinking A1 Indoor unit : Print circuit board error
Indoor unit: Electronic expansion valve drive unit (YIE) errorBlinking Blinking Blinking A9
Blinking
Blinking Blinking
U4
Transmission error : Indoor unit Outdoor BS unit ; 
Outdoor unit BS unit
Elevator
8, 10, 12 HP Outdoor Unit
8 HP 15%
10 HP 13%
5 HP Outdoor Unit
Inverter Control
210 Hz–52 Hz
20 Steps
Large
Load
Small
Compressor Capacity Control
100%
24%
14, 16 HP Outdoor Unit
Large
Load
Small
100%
11%
No. 1 
Compressor
Inverter Control
No. 1 
Compressor
Inverter Control
No. 1 
Compressor
Inverter Control
Inverter Control
210–52 Hz 20 steps
No. 3
Compressor
100% Operation
No. 2
Compressor
100% Operation
No. 2
Compressor
100% Operation
210 Hz–52 Hz
+ No. 2 + No.3
Compressor 
35 Steps
100%
210 Hz–52 Hz
+ No. 2 
Compressor
29 Steps
No. 1 
Compressor
Inverter Control
No. 1 
Compressor
Inverter Control
Large
Load
Small
No. 2
Compressor
100% Operation
Compressor Capacity Control
Compressor Capacity Control
Time
Suction air temp.
(Cooling)
VRV System (DAIKIN PID Controls)
ON/OFF controlled air conditioner (2.5 HP)
Light weight, Compact Units
Installation by Floor
If necessary, installation can be performed by floor. The
installers do not have to wait until the entire system is
installed in the building to test the system in each section.
Self-Diagnosis Function for Efficient Servicing and Maintenance
The self-diagnosis function detects malfunctions in major locations in the system and displays the type of malfunction and location. This
allows servicing and maintenance to be performed more efficiently.
The VRV system is an advanced system that offers convenience and comfort for end users.
Electronic expansion valves respond to changes in load in
indoor units and continually control the flow rate of refrigerant.
In this way, the VRV system maintains a nearly constant room
temperature without the typical temperature changes that occur
with a conventional ON/OFF control system. The extremely
refined PID control maintains the room temperature within
±
0.5°C of the set temperature.
Precise Room Temperature Control
Automatic Cooling and Heating Switching
The difference between the set temperature and actual room temperature is
detected and the cooling or heating mode is automatically switched over.
Auto Swing Low Operating Sound Design
All indoor units have a low operating sound design.
LCD Remote Controller
The remote controller uses an easy-to-read liquid crystal
display for easy operation. A full line of wired and wireless
controllers is available for the indoor units of all types.
Auto Restart Function
Even if there is an extended power failure, the VRV system will
automatically restart operation. A power failure will not cause any
settings to be lost, thus eliminating the need for re-programming.
Indoor units are so lightweight and compact that they can be
installed in any ceiling space. Outdoor units do not require
special cranes or conveyors to move them. They can even be
hauled in a building elevator.
Whether it be a ceiling-mounted cassette (double- flow/multi-
flow/600 x 600 multi-flow) type, ceiling-mounted cassette corner
type, ceiling-suspended type or wall-mounted type, all these
indoor units have an Auto Swing mechanism that helps keep the
room temperature uniform.
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