DURASTAR DRA2U18M1A User manual

OUTDOOR UNITS:
DRA2U18M1A, DRA3U28M1A, DRA4U36M1A, & DRA5U48M1A
INDOOR UNITS:
DRAC09F1A, DRAC12F1A, DRAC18F1A, DRAC24F1A,
DRAD09F1A, DRAD12F1A, DRAD18F1A, DRAD24F1A,
DRAW09F1A, DRAW12F1A, DRAW18F1A, DRAW24F1A,
DRAS12F1A, DRAF18F1A, & DRAF24F1A
SERVICE MANUAL
MULTI ZONE MINI SPLIT

Table of Contents Page
1. Specications ................................................................................................ 4
1. Model Reference
2. External Appearance
3. Features
4. Part names of Indoor units
5. General Specifications
6. Indoor Unit Combination
7. Dimensional Drawings
8. Centre of Gravity
9. Air Velocity and Temperature Distributions
10. Electrical Wiring Diagrams
11 Refrigerant Cycle Diagrams
12. Capacity Tables
13. Noise Criterion Curves
14. Electrical Characteristics
15. Static Pressure
2. Product Features ........................................................................................... 99
1. Operation Modes and Functions
2. Remote Controller Functions
3. Troubleshooting ............................................................................................ 122
1. Safety Caution
2. General Troubleshooting
3. Complain Record Form
4. Information Inquiry

Table of Contents Page
5. Outdoor Unit Point Check Function
6. Error Diagnosis and Troubleshooting Without Error Code
7. Quick Maintenance by Error Code
8. Troubleshooting by Error Code
9. Check Procedures
Appendix ............................................................................................................. 180
i) Temperature Sensor Resistance Value Table for T1,T2,T3 and T4 (°C – K)
ii) Temperature Sensor Resistance Value Table for TP (°C – K)
iii) Pressure On Service Port

Contents
1. Model Reference .................................................................................................... 5
2. External Appearance ............................................................................................. 6
3. Features .................................................................................................................. 8
4. Part names of Indoor units ................................................................................. 16
5. General Specifications ......................................................................................... 18
6. Indoor Unit Combination .................................................................................... 23
7. Dimensional Drawings ........................................................................................ 24
8. Centre of Gravity ................................................................................................. 31
9. Air Velocity and Temperature Distributions ...................................................... 33
10. Electrical Wiring Diagrams .................................................................................. 61
11 Refrigerant Cycle Diagrams ................................................................................ 79
12 Capacity Tables .................................................................................................... 83
13. Noise Criterion Curves ......................................................................................... 85
14. Electrical Characteristics ...................................................................................... 94
15. Static Pressure ...................................................................................................... 95
Specications

Specifications
Page 5
1. Model Reference
Refer to the following table to determine the specific indoor and outdoor unit model number of your purchased
equipment.
Indoor Unit Outdoor Unit Power Supply
Slim Ducted
DRAD09F1A
DRA2U18M1A
DRA3U28M1A
DRA4U36M1A
DRA5U48M1A
1, 208-230V~, 60Hz
DRAD12F1A
DRAD18F1A
DRAD24F1A
Cassette
DRAC09F1A
DRAC12F1A
DRAC18F1A
DRAC24F1A
Floor Ceiling
DRAF18F1A
DRAF24F1A
Wall Mounted
DRAW09F1A
DRAW12F1A
DRAW18F1A
DRAW24F1A

Specifications
Page 6
2. External Appearance
2.1 Indoor Unit
DRAC09F1A, DRAC12F1A, DRAC18F1A DRAC24F1A
DRAF18F1A, DRAF24F1A DRAD09F1A, DRAD12F1A, DRAD18F1A, DRAD24F1A
DRAW09F1A, DRAW12F1A, DRAW18F1A, DRAW24F1A

Specifications
Page 7
2.2 Outdoor Unit
DRA2U18M1A, DRA3U28M1A, DRA4U36M1A DRA5U48M1A

Specifications
Page 8
3. Functions
3.1 Slim Ducted Type
3.1.1 High Static Pressure
Capable to be installed in various applications that requires static pressure of 160Pa.
3.1.2 Eccentric Fan Design
New eccentric fan design improves the airflow at the air outlet, resulting better performance.
3.1.3 Slim Design
The industry lowest height is designed to be fitted into tight roof space.
3.1.4 2 Types Installation
Two types of installation methods can be selected: ceiling concealed and floor concealed(optional)

Specifications
Page 9
3.1.5 Flexible Air Intake
The frame size of air inlet in rear and bottom is the same. It’s very easy to switch to match dierent
applications.
3.1.6 Built-in Drain Pump
The built-in drain pump can lift condensing water up to 750mm.
3.1.7 Easy Clean
You can pull out the filter from left, right, or from the bottom for easy cleaning.

Specifications
Page 10
3.2 Cassette Type
3.2.1 Compact design
• The body size is 570×260×570mm, it’s just smaller than the ceiling board, so it’s very easy for installation and will
not damage the decoration. The panel size is 647×50×647mm.
• The hooks are designed in the four corners of the body, which can save installation space.
3.2.2 Fire-proof Controller Box
• Electrical control box adopts new design which can meet higher fire safety requirements.
3.2.3 Reserved remote on-o and alarm ports (Optional for fixed-speed units, standard for
inverter units)
• Remote on-o: With the reserved ports. a remote switch can be easily connected to realize remote control.
• Alarm: The built-in PCB can output alarm signal, which achieve setting up an external alarm light or vibration gauge
possible.
3.2.4 Build-in Drain Pump
• The drain pump can lift the condensed water up to 750mm.
• It’s convenient to install drainage piping under most space condition.
3.2.5 Fresh Air
• Fresh air intake function brings you fresh and comfortable air feeling.

Specifications
Page 11
3.2.6 Wired Controller(Optional)
• Compared with infrared remote controller, wired controller can be fixed on the wall and avoid mislaying. It's
mainly used for commercial zone and makes air conditioner control more convenient.
3.3 24K Cassette Type
3.3.1 360 o Air Flow
• 360°directional wind can deliver air evenly throughout every corner in any space, reducing hot and cold spots in the
room.
3.3.2 Independent Vane Control
• There are 4 air deflectors at each of sides with the cassette unit which enable it to change the air flow direction of
any side independently as needed.

Specifications
Page 12
3.3.3 Easy Installation
• The Cassette is much slimmer due to the redesigned heat exchanger and overall structures. It now requires less space
for installation.
3.3.4 Reserved Air Outlet for Duct
• The cassette unit is equipped with reserved connection for air outlet at the side of the indoor unit. It can connect to
an air duct to cool a small room nearby.
3.3.5 Reserved remote on-o and alarm ports (Optional for fixed-speed units, standard for
inverter units)
• Remote on-o: With the reserved ports. a remote switch can be easily connected to realize remote control.
• Alarm: The built-in PCB can output alarm signal, which achieve setting up an external alarm light or vibration gauge
possible.
3.3.6 Build-in Drain Pump
• The drain pump can lift the condensed water up to 750mm. Which is convenient to install drainage pipes under
most conditions. The drainage pipe can be installed on either the left or the right side.

Specifications
Page 13
3.3.7 Fresh Air
• Fresh air intake function brings you fresh and comfortable air feeling.
3.3.8 Wired Controller(Optional)
• Compared with infrared remote controller, wired controller can be fixed on the wall and avoid mislaying. It's
mainly used for commercial zone and makes air conditioner control more convenient.

Specifications
Page 14
3.4 Floor Ceiling Type
3.4.1 Easy installation- 2 Style Installation
• Fashionable design and streamline appearance, suitable for dierent room style.
3.4.2 3D Airow
• Vertical air flow and horizontal airflow can be adjusted by remote controller to direct air flow to every corner of the
room.
3.4.3 Easy Maintenance-Universal Spare Parts
• More than 60% parts and assemblies (such as fan wheel,plastic cases, metal parts etc.) are universal for 3
dierent bodies, which makes maintenance much easier.
3.4.4 Fresh Air
• Fresh air intake function brings you fresh and comfortable air feeling.
3.4.5 Healthy Filters(Optional)
• Varies of healthy filters can be chosen to fix on the machine.

Specifications
Page 15
3.5 Wall Mounted Type
3.5.1 Powerful Cooling
• The optimized indoor and outdoor unit design improves cooling performance and generate a strong air flow as long
as 12m and air speed 0.3m/s, keeping your entire room cool all through the summer.
3.5.2 3D Air Flow
• The unit has horizontal swing and auto vertical swing function, which supplies more even and comfortable air flow.
3.5.3 Golden Fin
• The unique anticorrosive golden coating on the heat exchangers can withstand the salty air, rain and other corrosive
elements. It also eectively prevents bacteria from breeding and improves heat efficiency.
• After one year of operation, the prototype with golden coating shows better performance in all working conditions
than the prototype with blue coated foil.
• Dry-wet cycle tests 3000 times (equivalent to using an air conditioner for 10 years): the golden fin still has good
hydrophilicity (hydrophilic angle 30°).
3.5.4 Fireproof Electronic Control Box
• The electric control box uses ABS material with a 5VA flame retardant rating, and the outer surface is covered with
sheet metal, which isolates the electric control box from fire.
3.5.5 ECO mode
• The air conditioner is equipped with the ECO energy-saving technology, which perfectly synergized with highly
efficient inverter technology. You can indulge in comfortable coolness while significantly reducing energy
consumption over 8 hours.

Specifications
Page 16
4. Part names of Indoor units
Slim Ducted Type
Air outlet
Air inlet
Drain pipe
Electric control box
Refrigerant connecting pipe
Cassette Type
Drain pump
(within indoor unit)
Drain pipe
Air outlet
Air inlet
Display panel
Front grille
Louver
Refrigerant pipe

Specifications
Page 17
Floor Ceiling Type
Air inlet
Display panel
Air outlet
grille
Louver
Installation part
Wall Mounted Type
Installation
plate
Mounting screw
ST3.9 25-C-H
Clip anchor
Remote
controller
holder

Specifications
Page 18
5. General Specications
Indoor model DRAD09F1A DRAD12F1A DRAD18F1A DRAD24F1A
Power supply (Indoor ) V- Ph-Hz 208~230-1-60 208~230-1-60 208~230-1-60 208~230-1-60
Indoor fan motor
Model ZKFN-55-8-22 ZKFN-55-8-22 ZKFN-160-8-1-2 ZKFN-160-8-1-2
Qty 1 1 1 1
Input W 130.0 130.0 90.0 90.0
Capacitor uF --- --- --- ---
Speed(Hi/Med/Lo) r/min 1170/1030/850 1170/1030/850 850/700/450 880/820/690
Indoor coil
a.Number of rows 3 3 3 3
b.Tube pitch(a)x row pitch(b) mm 21x13.37 21x13.37 21x13.37 21x13.37
c.Fin spacing mm 1.4 1.4 1.4 1.4
d.Fin type (code) Hydrophilic aluminum Hydrophilic aluminum Hydrophilic aluminum Hydrophilic aluminum
e.Tube outside dia.and type mm 7 Inner groove tube 7 Inner groove tube 7 Inner groove tube 7 Inner groove tube
f.Coil length x height x width mm 526x210x40.11 526x210x40.11 695x252x40.11 915x294x40.11
g.Number of circuits 4 4 4 7
Indoor air flow (Hi/Med/Lo) m3/h 600/480/300 600/480/300 900/765/630 1320/1180/740
ESP
Rated Pa 25 25 25 25
Range Pa 0-40 0-40 0-100 0-160
Indoor noise level (Hi/Med/Lo)(Standard pressure) dB(A) 38/32/25 38/33.5/26 39/37/35 44/41/34
Indoor unit
Dimension(W*D*H) mm 700x506x200 700x506x200 880x674x210 1100x774x249
Packing(W*D*H) mm 860x540x275 860x540x275 1070x725x270 1305x805x305
Net/Gross weight Kg 17.7/21.9 17.8/22 23.8/29.5 39.4/46.7
Design pressure MPa 4.2/1.5 4.2/1.5 4.2/1.5 4.2/1.5
Drainage water pipe dia. mm OD 25 OD 25 OD 25 OD 25
Refrigerant piping Liquid side/ Gas side mm(inch) 9.52/ 15.9(3/8"/5/8")
Controller Wired Control Wired Control Wired control Wired control
Operation temperature °C 17~30 17~30 17~30 17~30
Room temperature
Cooling °C 17~32 17~32 17~32 17~32
Heating °C 0~30 0~30 0~30 0~30
Qty’per 20’ /40’ /40’HQ 176/352/396 176/352/396 120/264/297 77/161/198
Notes:
1) Capacities are based on the following conditions:
Cooling: - Indoor Temperature 26.7°C(80°F) DB /19.4 °C(67°F) WB Heating: - Indoor Temperature 21.1°C(70°F) DB / 15.6°C(60°F) WB
-Outdoor Temperature 35 °C(95°F) DB /23.9 °C(75°F) WB -Outdoor Temperature 8.3°C(47°F) DB / 6.1°C(43°F) WB
-Interconnecting Piping Length 7.5m - Interconnecting Piping Length 7.5 m
- Level Dierence of Zero. - Level Dierence of Zero.
2) Capacities are net capacities.
3) Due to our policy of innovation some specifications may bechangedwithout notification .

Specifications
Page 19
Indoor model DRAC09F1A DRAC12F1A DRAC18F1A DRAC24F1A
Power supply (Indoor ) V- Ph-Hz 208~230-1-60 208~230-1-60 208~230-1-60 208~230-1-60
Indoor fan motor
Model ZKFP-46-8-1 ZKFP-46-8-1 ZKFP-46-8-1 ZKFP-42-8-1
Qty 1 1 1 1
Input W 45.0 45.0 45.0 58.0
Capacitor uF --- --- --- ---
Speed(Hi/Med/Lo) r/min 600/520/460 680/580/500 730/630/570 600/520/450
Indoor coil
a.Number of rows 3.0 1 2 2 2
b.Tube pitch(a)x row pitch(b) mm 21x13.37 21x13.37 21x13.37 21x13.37
c.Fin spacing mm 1.3 1.3 1.3 1.4
d.Fin type (code) Hydrophilic aluminum Hydrophilic aluminum Hydrophilic aluminum Hydrophilic aluminum
e.Tube outside dia.and type mm
f.Coil length x height x width mm 1380x210x13.37 1360x210x26.74 1360x210x26.74 1940x168x26.74+
2010x168x26.74
g.Number of circuits 2 4 4 8
Indoor air flow (Hi/Med/Lo) m3/h 600/520/460 574/490/422 956/825/746 1400/1250/1000
Indoor sound pressure level (Hi/Med/Lo) dB(A) 41/39/37 41/38/35 46/43/41 51/47/43
Indoor unit
Dimension (W x Dx H)(body) mm 570x570x260 570x570x260 570x570x260 840x840x205
Packing (W x Dx H)(body) mm 655x655x290 655x655x290 655x655x290 900x900x225
Dimension (W x Dx H)(panel) mm 647x647x50 647x647x50 647x647x50 950x950x55
Packing (W x Dx H)(panel) mm 715x715x123 715x715x123 715x715x123 1035x1035x90
Net/Gross weight(body) kg 14.5/17.3 16/18.6 16.2/21.3 21/24.6
Net/Gross weight kg 2.5/4.5 2.5/4.5 2.5/4.5 5/8
Design pressure MPa 4.2/1.5 4.2/1.5 4.2/1.5 4.2/1.5
Drainage water pipe dia. mm OD 25 OD 25 OD 25 OD 32
Refrigerant piping Liquid side/ Gas side mm(inch) 9.52/ 15.9(3/8"/5/8")
Controller Remote Control Remote Control Remote Control Remote control
Operation temperature °C 17~30 17~30 17~30 17~30
Room tempera -
ture
Cooling °C 17~32 17~32 17~32 17~32
Heating °C 0~30 0~30 0~30 0~30
Qty’per 20’ /40’ /40’HQ 186/375/429 186/375/429 186/375/429 148/312/342
Notes:
1) Capacities are based on the following conditions:
Cooling: - Indoor Temperature 26.7°C(80°F) DB /19.4 °C(67°F) WB Heating: - Indoor Temperature 21.1°C(70°F) DB / 15.6°C(60°F) WB
-Outdoor Temperature 35 °C(95°F) DB /23.9 °C(75°F) WB -Outdoor Temperature 8.3°C(47°F) DB / 6.1°C(43°F) WB
-Interconnecting Piping Length 7.5m - Interconnecting Piping Length 7.5 m
- Level Dierence of Zero. - Level Dierence of Zero.
2) Capacities are net capacities.
3) Due to our policy of innovation some specifications may bechangedwithout notification .

Specifications
Page 20
Indoor model DRAF18F1A) DRAF24F1A
Power supply (Indoor ) V- Ph-Hz 208~230-1-60 208~230-1-60
Indoor fan motor
Model ZKFN-55-8-1 ZKFN-55-8-1
Qty 1 1
Input W 100.0 100.0
Capacitor uF --- ---
Speed(Hi/Med/Lo) r/min 950/850/750 1350/1260/1120
Indoor coil
a.Number of rows 2 3
b.Tube pitch(a)x row pitch(b) mm 21x13.37 21x13.37
c.Fin spacing mm 1.3 1.3
d.Fin type (code) Hydrophilic aluminum Hydrophilic aluminum
e.Tube outside dia.and type mm
f.Coil length x height x width mm 795x294x26.74 795x294x40.11
g.Number of circuits 6 7
Indoor air flow (Hi/Med/Lo) m3/h 932/825/715 1290/1204/1017
Indoor noise level (Hi/Med/Lo) dB(A) 47/44/39 58.5/55/52
Indoor unit
Dimension(W*D*H) mm 1068x675x235 1068x675x235
Packing(W*D*H) mm 1145x755x313 1145x755x313
Net/Gross weight Kg 25.9/31 26.5/31.4
Design pressure MPa 4.2/1.5 4.2/1.5
Drainage water pipe dia. mm OD 25 OD 25
Refrigerant piping Liquid side/ Gas side mm(inch) 9.52/ 15.9(3/8"/5/8")
Controller Wired Control Wired control
Operation temperature °C 17~30 17~30
Room temperature
Cooling °C 17~32 17~32
Heating °C 0~30 0~30
Qty’per 20’ /40’ /40’HQ 102/220/252 102/220/252
Notes:
1) Capacities are based on the following conditions:
Cooling: - Indoor Temperature 26.7°C(80°F) DB /19.4 °C(67°F) WB Heating: - Indoor Temperature 21.1°C(70°F) DB / 15.6°C(60°F) WB
-Outdoor Temperature 35 °C(95°F) DB /23.9 °C(75°F) WB -Outdoor Temperature 8.3°C(47°F) DB / 6.1°C(43°F) WB
-Interconnecting PipingLength 7.5m - Interconnecting Piping Length 7.5 m
- Level Dierence of Zero. - Level Dierence of Zero.
2) Capacities are net capacities.
3) Due to our policy of innovation some specifications may be changedwithout notification .