Duct Type Split Air Conditioner
Service Manual
ooper&Hunter International Corporation
(USA)
CONTENTS
PRODUCT.......................................................................................................................................2
1 MODELS LIST....................................................................................................................2
2 NOMENCLATURE.............................................................................................................2
3 FUNCTION ..........................................................................................................................3
4 PRODUCT DATA................................................................................................................4
4.1 Product Data at Rated Condition.................................................................................4
4.2 Operation Range........................................................................................................11
5 PIPING DIAGRAM...........................................................................................................12
5.1 Cooling Only.............................................................................................................12
5.2 Heat Pump................................................................................................................. 13
CONTROL ....................................................................................................................................16
1 OPERATION FLOWCHART..........................................................................................16
1.1 Cooling/Dry Operation..............................................................................................16
1.2 Heating Operation .....................................................................................................17
2 MAIN LOGIC....................................................................................................................17
2.1 Cooling......................................................................................................................18
2.2 Dry Mode ..................................................................................................................18
2.3 Heating Mode............................................................................................................ 19
2.4 Defrosting..................................................................................................................20
2.5 Fan Mode ..................................................................................................................20
3 WIRELESS REMOTE CONTROLLER......................................................................... 20
3.1 Operation View .........................................................................................................20
3.2 Display View.............................................................................................................22
4 WIRED REMOTE CONTROLLER................................................................................24
4.1 Operation View .........................................................................................................24
4.2 Display View.............................................................................................................25
4.3 Dimension .................................................................................................................26
4.4 Installation................................................................................................................. 26
5 CENTRALIZED CONTROLLER................................................................................... 28
5.1 Centralized Controller-not with week timer..............................................................28
5.2 Centralized Controller-week timer............................................................................29
5.3 Field Setting ..............................................................................................................32
5.4 Control Wiring Design ..............................................................................................33
INSTALLATION...........................................................................................................................35
1 INDOOR UNIT INSTALLATION ...................................................................................35
1.1 Before Installation.....................................................................................................35
1.2 Installation Site..........................................................................................................35
1.3 Dimension Data.........................................................................................................35
1.4 Installation Clearance Data .......................................................................................36
1.5 Drain Piping Work ....................................................................................................37
2 OUTDOOR UNIT INSTALLATION...............................................................................37
1
2.1 Before Installation.....................................................................................................37
2.2 Installation Site..........................................................................................................37
2.3 Dimension Data.........................................................................................................38
2.4 Installation Clearance Data .......................................................................................39
3 REFRIGERATION PIPING WORK...............................................................................39
3.1 Refrigeration Piping Work Procedures......................................................................39
3.2 Cautions for Connecting Pipes..................................................................................40
3.3 Specification of Connection Pipe..............................................................................40
4 ELECTRIC WIRING WORK.......................................................................................... 41
4.1 Wiring Principle ........................................................................................................41
4.2 Electric Wiring Design..............................................................................................41
4.3 Specification of Power Supply Wire and Air Switch ................................................43
MAINTENANCE.......................................................................................................................... 45
1 TROUBLE T A BLE............................................................................................................45
2 FLOW CHART OF TROUBLESHOOTING............................................................. 47
2.1 E1 Compressor High Pressure Protection .................................................................47
2.2 E3 Compressor Low Pressure Protection.................................................................. 48
2.3 E4 Compressor Discharge Temp. Protection.............................................................49
2.4 E5 Overcurrent Protection (Compressor Overloading Protection)............................49
2.5 E6 Communication Error ..........................................................................................50
2.6 E8 Overload of Indoor Fan........................................................................................51
2.7 F0 Failure of Indoor Room Sensor at Air Intake....................................................... 51
2.8 F1 Failure of Evaporator Temp. Sensor ....................................................................52
2.9 F2 Temperature Sensor Error of Condenser .............................................................. 52
3 WIRING DIADRAM.................................................................................................... 53
4 DISASSEMBLY AND ASSEMBLY PROCEDURE OF MAIN PARTS...................60
5 EXPLODED VIEWS AND PART LIST......................................................................63
2
COMMERCIAL AIR CONDITIONER DUCT TYPE SPLIT AIR CONDITIONER
PRODUCT
1
DUCT TYPE SPLIT AIR CONDITIONER PRODUCT
PRODUCT
1 MODELS LIST
Units
Series
Duct Type
Capacity
Model Name
FGR20/C-M 19.5/5.5 22.5/6.4
FG20/C-M 19.5/5.5 /
FGR25/C-M 24.5/6.9 27.5/7.8
FG25/C-M 24.5/6.9 /
FGR30/C-M 29.5/8.4 32.5/9.3
（kW/Ton）
Cooling Heating
Re
f
R2
2
R2
2
R2
2
Appearance
Outdoor Indoor
FG30/C-M 29.5/8.4 /
FGR40/C-M 38/10.8 41/11.7
FG40/C-M 38/10.8 /
2 NOMENCLATURE
FG
R2
2
Note:1Ton =12000Btu/h = 3.517kW
Supplementation code
Control method
Frequency conversion system
Static pressure type
Cooling capacity
Product type
Air-duct air supply
2
DUCT TYPE SPLIT AIR CONDITIONER PRODUCT
Meaning of standard model before“/”
Meaning Expression method
FG Air-duct air supply
Unit type
Cooling capacity Nominal cooling capacity (kW)
Static pressure type
Cooling only type-omitted
Heat pump auxiliary electric heat type-R
Auxiliary hot water plate and pipe type-W
Common type-omitted
High static pressure-H
The outdoor unit is not expressed.
Fixed frequency-omitted Frequency conversion system
Frequency conversion-P
Routine -omitted Control method
Remote monitoring-Y
Meaning of supplementation code after “/”
Meaning Expression method
Design No. Arranged based on A, B, C…
Refrigerant
Production method Self-control-omitted
Indoor and outdoor unit code
R22-omitted
R407-N
R410a-Na
Others to be applied for when they are used
380V 3Ph～,50Hz -M Power type
(The unit to be exported must be expressed)
Outdoor unit-（O）
Indoor unit-（I）
The entire unit is not expressed.
3 FUNCTION
Features-outdoor units
Features Description
Quality
condenser coil
Coil protected Coils are protected from damage by a metal grill
Protected
compressor
Resisting
corrosion
Low operating Low noise fan and low noise compressor with isolator
3
The coil is constructed of golden aluminum sheet and inner groove copper
pipe
High/low pressure protection, discharge high temperature protection, overload
protection, reverse (open) phase protection, sensor malfunction alarm
Cabinet is made of pre-painted steel. The pre-treated flat galvanized steel
provides a better paint to steel bond, which resists corrosion and rust creep.
Special primer formulas ensure minimal fading when exposed to sunlight
DUCT TYPE SPLIT AIR CONDITIONER PRODUCT
sound level
Low
Quality compressor and motor are used
maintenance
Factory tested All units are factory tested prior to dispatch to verify system operation and
control functioning before shipment
Features-indoor units
features Description
Flexible
installation
Long-distance
duct air supply
The capacity
Condensing water tube and refrigerant tube are in same direction, it’s better
for installation
It adopts high static pressure design, so air is centralized handling in the
indoor unit and implant long-distance duct air supply
The capacity range is 20kW to 40kW
range
Convenient
operation
Good indoor air
quality
Simple controller and intelligent remote controller make unit more
convenient operation
It can connect many supply-air outlet to the duct, so that it can make the
temperature and humidity of the whole room equality, meanwhile, it can lead
in fresh air, makes well indoor unit air quality. All units are provided with
filters that are easily accessible from the rear of the unit.
Microcomputer
control
The controls provide for compressor delay protection, Remote control
function, temperature setting, fan function, sleep function, memory function,
self-diagnosis with alarm function.
Quality evaporator Evaporator coils are constructed of inner groove copper tube and hydrophilic
aluminum sheet
Low operating
The fan motors are resilient mounted to minimize vibration and noise
sound
4 PRODUCT DATA
4.1 Product Data at Rated Condition
FGR/C-M(I) Indoor
Models
Nominal Capacity
At Rated ESP
Power Supply V/Ph/Hz 380/3/50
Power Consumption
Running Current Cooling A 15.8 18.9 21.8
4
Cooling
Heating
Cooling 8.5 10.2 12.1
Heating
Unit
Outdoor
Unit
Btu/h 66537 83598 100658
kW 19.5 24.5 29.5
Btu/h 76773 93834 110895
kW 22.5 27.5 32.5
kW
20 25 30
FGR/C-M(O)
20 25 30
6.8 9 10.1
DUCT TYPE SPLIT AIR CONDITIONER PRODUCT
Heating 12.5 16.8 19.2
Refrigerant Type R22
Refrigerant Charge kg 7 7 8.5
Power Supply V/Ph/Hz 380/3/50
Type Centrifugal / Belt Drive
CFM 2354 2825 3237
m3/h 4000 4800 5500
in.wg 0.36 0.44 0.52
Pa 90 110 130
－
dB(A) 54 54 57
－
－
－
mm
－
－
2/16 3/16 4/16
1000/1200 1000/1200 1000/1200
Wired Control with LED Display + Wireless Controller
Overload protection
Inner Groove Copper Tube
Aluminum
Standard Washable Synthetic
Fan
Indoor Unit
Coil
(Outline/Package)
Air flow
Input Power W 1500 1500 1500
Running Current A 3.2 3.4 3.6
Rated ESP
Fan Motor Protection
Sound Pressure Level
(H/M/L/SL)
Tube
Fin
Coil Area Sqm 0.66 0.63 0.66
Dimensions
Weight(Net/Gross) kg 150/200 150/200 150/200
System Operation Control
Condensate Drainage(O.D) mm 25.4
Air Filter
Material
Diameter mm 9.52 7.94 9.52
Material
No.of Rows/FPI
Height 500/673 500/673 500/673
Width 1500/1840 1500/1840 1500/1840
Depth
Indoor
Unit
Models
Outdoor
Unit
FGR/C-M(I)
20 25 30
FGR/C-M(O)
20 25 30
Power Supply V/Ph/Hz 380/3/50
Compressor Type Scroll
Compressor
Outdoor Unit
Nominal Current 12.21 15.27 15.5
L.R.A
A
98 142 111
Vibration Isolator Rubber
Protection Device Auto Reset Thermal Overload
Fan Type/Drive Inner Groove Copper Tube
Fan Speed rpm 850 850 660
Fan
Blade Material Plastic
Diameter mm 524 524 750
Coil Tube Material Inner Groove Copper Tube
5
DUCT TYPE SPLIT AIR CONDITIONER PRODUCT
Dimension
(Outline/Package)
Pipe sizes
Nominal Capacity
At Rated ESP
Power Supply V/Ph/Hz 380/3/50
Power Consumption
Running Current
Refrigerant Type R22
Refrigerant Charge kg 7 6.6 10
Fan
Indoor Unit
Coil
Fin
Material Aluminum
No.of Rows/FPI 2/15 2/15 2/14
Coil Area Sqm 1.22 1.49 2.08
Sound Pressure Level dB(A) 66 66 67
Height 1350/1460 1600/1715 1772/1950
Width 1150/1305 1150/1305 990/1162
Depth
mm
360/502 360/502 880/980
Weight(Net/Gross) kg 180/195 185/200 250/280
Suction Φ28
Liquid
Models
Cooling
Heating
Cooling 8.5 10.2 12.1
Heating
Cooling 15.8 18.9 21.8
Heating
Power Supply V/Ph/Hz 380/3/50
Type Centrifugal / Belt Drive
Air flow
Input Power W 1500 1500 1500
Running Current A 3.2 3.4 3.6
Rated ESP
Fan Motor Protection
Sound Pressure Level
(H/M/L/SL)
Tube
Fin
Material
Diameter mm 9.52 7.94 9.52
Material
No.of Rows/FPI
Unit
Outdoor
Unit
Btu/h 66537 83597 100658
kW 19.5 24.5 29.5
Btu/h / / /
kW / / /
kW
A
CFM 2354 2825 3237
m3/h 4000 4800 5500
in.wg 0.36 0.44 0.52
Pa 90 110 130
－
dB(A) 54 54 57
－
－
－
mm
Φ16
FG/C-M(I) Indoor
20 25 30
FG/C-M(O)
20 25 30
/ / /
/ / /
Overload protection
Inner Groove Copper Tube
Aluminum
2/16 3/16 4/16
6
DUCT TYPE SPLIT AIR CONDITIONER PRODUCT
Coil Area Sqm 0.66 0.63 0.66
Dimensions
(Outline/Package)
Weight(Net/Gross) kg 150/200 150/200 150/200
System Operation Control
Condensate Drainage(O.D) mm 25.4
Air Filter
Height 500/673 500/673 500/673
Width 1500/1840 1500/1840 1500/1840
Depth
mm
－
－
1000/1200 1000/1200 1000/1200
Wired Control with LED Display + Wireless Controller
Standard Washable Synthetic
FG/C-M(I) Indoor
Compressor
Outdoor Unit
Fan
Coil
Dimension
(Outline/Package)
Pipe sizes
Models
Power Supply V/Ph/Hz 380/3/50
Compressor Type Scroll
Nominal Current 12.21 15.27 15.5
L.R.A
Vibration Isolator Rubber
Protection Device Auto Reset Thermal Overload
Fan Type/Drive Inner Groove Copper Tube
Fan Speed rpm 850 850 660
Blade Material Plastic
Diameter mm 524 524 750
Tube Material Inner Groove Copper Tube
Fin
Coil Area Sqm 1.22 1.49 2.08
Sound Pressure Level dB(A) 66 66 67
Weight(Net/Gross) kg 180/195 185/200 250/280
Material Aluminum
No.of Rows/FPI 2/15 2/15 2/14
Height 1350/1460 1600/1715 1772/1950
Width 1150/1305 1150/1305 990/1162
Depth
Suction Φ28
Liquid
Unit
Outdoor
Unit
A
mm
mm
20 25 30
FG/C-M(O)
20 25 30
98 142 111
360/502 360/502 880/980
Φ16
7
DUCT TYPE SPLIT AIR CONDITIONER PRODUCT
FGR/C-M(I) Indoor
Nominal Capacity
At Rated ESP
Power Consumption
Running Current
Fan
Indoor Unit
Coil
Dimensions
(Outline/Package)
System Operation Control
Condensate Drainage(O.D) mm 25.4
Models
Cooling
Heating
Power Supply V/Ph/Hz 380/3/50
Cooling 16
Heating
Cooling 30.5
Heating
Refrigerant Type R22
Refrigerant Charge kg 11
Power Supply V/Ph/Hz 380/3/50
Type Centrifugal / Belt Drive
Air flow
Input Power kW 2.2
Running Current A 4.2
Rated ESP
Fan Motor Protection
Sound Pressure Level
(H/M/L/SL)
Tube
Fin
Coil Area Sqm 0.86
Weight(Net/Gross) kg 215/265
Air Filter
Material
Diameter mm 9.52
Material
No.of Rows/FPI
Height 650/835
Width 1700/1890
Depth
Unit
Outdoor
Unit
Btu/h 129675
kW 38
Btu/h 139912
kW 41
kW
A
CFM 4120
m3/h 7000
in.wg 0.60
Pa 150
－
dB(A) 58
－
－
－
mm
－
－
Wired Control with LED Display + Wireless
Overload protection
Inner Groove Copper Tube
Standard Washable Synthetic
40
FGR/C-M(O)
40
13.5
25.7
Aluminum
3/16
1100/1460
Controller
8
DUCT TYPE SPLIT AIR CONDITIONER PRODUCT
FGR/C-M(I) Indoor
Compressor
Outdoor Unit
Fan
Coil
Dimension
(Outline/Package)
Pipe sizes
Models
Power Supply V/Ph/Hz 380/3/50
Compressor Type Scroll
Nominal Current 20.2
L.R.A
Vibration Isolator Rubber
Protection Device Auto Reset Thermal Overload
Fan Type/Drive Inner Groove Copper Tube
Fan Speed rpm 730
Blade Material Plastic
Diameter mm 750
Tube Material Inner Groove Copper Tube
Fin
Coil Area Sqm 2.71
Sound Pressure Level dB(A) 69
Weight(Net/Gross) kg 300/330
Material Aluminum
No.of Rows/FPI 2/14
Height 1772/1950
Width 1290/1370
Depth
Suction Φ35
Liquid
Unit
Outdoor
Unit
A
mm
mm
40
FGR/C-M(O)
40
140
880/980
Φ16
9
DUCT TYPE SPLIT AIR CONDITIONER PRODUCT
FG/C-M(I) Indoor
Nominal Capacity
At Rated ESP
Power Consumption
Running Current
Fan
Indoor Unit
Coil
Dimensions
(Outline/Package)
System Operation Control
Condensate Drainage(O.D) mm 25.4
Models
Cooling
Heating
Power Supply V/Ph/Hz 380/3/50
Cooling 16
Heating
Cooling 30.5
Heating
Refrigerant Type R22
Refrigerant Charge kg 11
Power Supply V/Ph/Hz 380/3/50
Type Centrifugal / Belt Drive
Air flow
Input Power kW 2.2
Running Current A 4.2
Rated ESP
Fan Motor Protection
Sound Pressure Level
(H/M/L/SL)
Tube
Fin
Coil Area Sqm 0.86
Weight(Net/Gross) kg 215/265
Air Filter
Material
Diameter mm 9.52
Material
No.of Rows/FPI
Height 650/835
Width 1700/1890
Depth
Unit
Outdoor
Unit
Btu/h 129675
kW 38
Btu/h /
kW /
kW
A
CFM 4120
m3/h 7000
in.wg 0.60
Pa 150
－
dB(A) 58
－
－
－
mm
－
－
Wired Control with LED Display + Wireless
Overload protection
Inner Groove Copper Tube
Standard Washable Synthetic
40
FG/C-M(O)
40
/
/
Aluminum
3/16
1100/1460
Controller
10
DUCT TYPE SPLIT AIR CONDITIONER PRODUCT
Models
Power Supply V/Ph/Hz 380/3/50
Compressor Type Scroll
Nominal Current 20.2
Compressor
Outdoor Unit
Note：
① Nominal capacities are based on the follow conditions.
Fan
Coil
Dimension
(Outline/Package)
Pipe sizes
Cooling
Heating
Piping Length 7.5m
Fin
Sound Pressure Level dB(A) 69
Weight(Net/Gross) kg 300/330
Indoor Outdoor
DB：27℃(80.6℉)
WB：19℃(66.2℉)
DB：20℃(68℉)
WB：/℃(/℉)
Coil Area Sqm 2.71
L.R.A
Vibration Isolator Rubber
Protection Device Auto Reset Thermal Overload
Fan Type/Drive Inner Groove Copper Tube
Fan Speed rpm 730
Blade Material Plastic
Diameter mm 750
Tube Material Inner Groove Copper Tube
Material Aluminum
No.of Rows/FPI 2/14
Height 1772/1950
Width 1290/1370
Depth
Suction Φ35
Liquid
Indoor
Unit
Outdoor
Unit
A
mm
mm
DB：35℃(95℉)
WB：/℃(/℉)
DB：7℃(44.6℉)
WB：6℃(42.8℉)
FG/C-M(I)
40
FG/C-M(O)
40
140
880/980
Φ16
4.2 Operation Range
Max. Cooling 32/23 43/26
11
Indoor unit dry / wet bulb Temp.（℃） Outdoor unit dry / wet bulb Temp（℃）
DUCT TYPE SPLIT AIR CONDITIONER PRODUCT
Min. Cooling 21/15 21/15
Max. Heating 27/- 24/18
Min. Heating 20/- -5/-6
5 PIPING DIAGRAM
Name
Sign
Name
Sign
compressor
Temperature
Sensor
5.1 Cooling Only
4-way
valve
Pressure
Switch
Heat
Exchanger
with Axial
Flow Fan
Stop
Va l v e
Check
Va l v e
Heat
Exchange
with Cross
Flow Blower
Capillary Filter
Heat Exchanger
with Centrifugal
Fan
Thermal
Expansion
Va l v e
Electronic
Expansion
Va l v e
Vapour
Liquid
Separator
12
DUCT TYPE SPLIT AIR CONDITIONER PRODUCT
5.2 Heat Pump
13
DUCT TYPE SPLIT AIR CONDITIONER PRODUCT
Note: FG（R）40/C-M has oil separator. The electric expansion valve is connected with the throttle capillary.
14
COMMERCIAL AIR CONDITIONER DUCT TYPE SPLIT AIR CONDITIONER
CONTROL
15
COMMERCIAL AIR CONDITIONER DUCT TYPE SPLIT AIR CONDITIONER
CONTROL
1 OPERATION FLOWCHART
1.1 Cooling/Dry Operation
16
COMMERCIAL AIR CONDITIONER DUCT TYPE SPLIT AIR CONDITIONER
1.2 Heating Operation
2 MAIN LOGIC
17
COMMERCIAL AIR CONDITIONER DUCT TYPE SPLIT AIR CONDITIONER
2.1 Cooling
cooling mode
compressor
outdoor fan
indoor fan
way
valve
OFF
OFF
OFF
OFF
turn on
the unit
ON
ON
ON
turn off the
unit manually
OFF
OFF
OFF
time
When T ambient ≥T setting＋1 , the unit starts cooling. I℃ n that case, the compressor, the outdoor
fan and the indoor fan will run. The outdoor fan will run for 15s before the compressor runs.
When T ambient ≤T setting—1 , the unit stops cooling.
fan will stop running while the indoor fan will run. The outdoor fan will stop after the compressor
stops for 15s.
When T ambient＝T setting, the compressor and the outdoor fan will remain the previous running
state and the indoor fan will run.
℃ In that case, the compressor, the outdoor
2.2 Dry Mode
compressor
outdoor fan
indoor fan
way
valve
OFF
OFF
OFF
OFF
dry mode
turn on
the unit
ON
ON
ON
turn off the
unit manually
OFF
OFF
OFF
time
18
COMMERCIAL AIR CONDITIONER DUCT TYPE SPLIT AIR CONDITIONER
When T ambient ≥T setting＋2 , the unit starts cooling. In that case, the compressor, the outdoor ℃
fan and the indoor fan will run. The outdoor fan will run for 15s before the compressor runs.
When T setting－2 < T
℃ ambient < T setting＋2 , the compress℃ or and the outdoor fan will repeat
running for 6min and stopping for 4min, while the indoor fan will run.
When T ambient ≤T setting—2 , the compressor, the outdoor fan will stop running. The outdoor
℃
fan will stop after the compressor stops for 15s.
2.2.2 Dual System
When T ambient≥T setting＋2 , the unit starts cooling. The indoor fan will run at low speed. ℃
The outdoor fan A will run for 15s before the compressor runs. After the compressor A runs for
15s, the outdoor fan B will run. The compressor B will run 15s later.
During running, the unit will run according to the following situation for 6-min interval:
When T setting－2 < T
℃ ambient < T setting＋2 , the compressor A and the outdoor fan A will ℃
repeat running for 6min and stopping for 4min, while the compressor will remain the previous
running state.
When T ambient≤T setting－2 , the compressor A will stop. The outdoor fan A will stop 15s
later. It will detect the temperature 6min later. When T ambient≤T setting－2 , the compressor B will
℃
℃
stop. The outdoor fan B will stop 15s later.
2.3 Heating Mode
heating mode
turn on the
unit
compressor
outdoor fan
indoor fan
auxiliary
heator
way
valve
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ON
meet the
running
condition
anti-cold
air
When T ambient –T supplement ≤T setting -1 , the unit stars heating. The selector valve, the ℃
outdoor fan and the compressor will be energized and start running, while the indoor fan will run
according to anti-cold air. The outdoor fan will run for 1s before the compressor runs. The 4-way
valve will work 20s later.
When T ambient- T supplement＝T setting, the compressor, the selector valve and the outdoor fan
will remain the previous running state and the indoor fan will run.
turn off the
unit manually
OFF
OFF
OFF
OFF
OFF
time
19
COMMERCIAL AIR CONDITIONER DUCT TYPE SPLIT AIR CONDITIONER
When T ambient – T supplement ≥T setting＋1 , the compressor and the outdoor fan stop running. ℃
The selector valve is still energized, and the indoor fan will run according to blowing residual heat.
(In that case, the indoor fan must keep running in case of heat accumulation inside the air duct.)
The compressor will stop running 15s earlier than the outdoor fan.
2.4 Defrosting
defrosting mode
stop
defrostin g
compressor
defrosting
ON
outdoor fan
indoor fan
auxiliary
heater
way
valve
ON
ON
ON
ON ON
OFF
OFF
OFF
OFF
ON
ON
run at setting
speed
meet running
condition
ON
time
Defrosting Condition
When the heating time accumulates to 44min and T condenser ≤－5 lasts for 1min, the unit ℃
will start defrosting. In that case, the selector valve, the outdoor fan and auxiliary e-heater will
stop running, while the compressor will run forcibly and the indoor fan will run according to
anti-cold air. (The indoor fan will not run during defrosting. After defrosting, with T evaporator
≥35 or time ≥45s, the indoor fan will start running. ℃ )
Defrosting Terminating Condition
The defrosting will terminate after it lasts for 10min or T condenser ≥＋10 lasts for 1s. In that
℃
case, the selector valve and the outdoor fan will run at the same time.
After defrosting, the 4-way valve is switched. The outdoor fan will run 1s later.
2.5 Fan Mode
Only the indoor fan is running.
3 WIRELESS REMOTE CONTROLLER
3.1 Operation View
1) Controller-Duct Type
20
COMMERCIAL AIR CONDITIONER DUCT TYPE SPLIT AIR CONDITIONER
SWING
AUTO FAN
AUTO
SWING
MODE
FAN
OPER
AIR
ON/OFF
NO. Name Function description
1 ON/OFF button Press the button to set start or close unit
Press the button to select the mode, cooling, heating, fan or auto
2 Mode button
mode.
3 Increase/Decrease button Press this button to increase/decrease the setup temp
4 LCD Screen Display the status of remote information
5 Swing button Press this button set swing function
6 Fan speed button Press this button to set fan speed
2) Controller-Cassette Type and Ceiling Type
21
COMMERCIAL AIR CONDITIONER DUCT TYPE SPLIT AIR CONDITIONER
SWING
Auto Fan
AUTO
SWING HUMID
TIMER
ON/OFF
MODE
AIR
LIGHT
ON/OFF
OPER
FAN
SAVE
HR
SWING
AUTO FAN
AUTO
SWING
TIMER
ON/OFF
SLEEP
LIGHT
MODE
TIME OFFTIME ON
HUMID
AIR
LIGHT
ANION
ON/OFF
FAN
OPER
SAVE
HR
AIR
HUMID
SAVE
NO. Name Function description
1 Swing button Press this button to set swing function
2 Increase/Decrease button Press this button to increase/decrease the setup temp
Press the button to select the mode, cooling, heating, fan or auto
3 Mode button
mode.
4 ON/OFF button Press the button to set start or close unit
5 LCD Screen Display the status of remote information
6 Fan speed button Press this button to set fan speed
7 Sleep button Press the button to set sleep function
8 Time on Press the button to set time on function
9 Time off Press the button to set time off function
3.2 Display View
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COMMERCIAL AIR CONDITIONER DUCT TYPE SPLIT AIR CONDITIONER
SWING
AUTO FAN
AUTO
SWING HUMID
TIMER
ONOFF
No. Display Function description
1 Fan Speed
FAN
OPER
AIR
LIGHT
SAVE
HR
：auto fan speed, ：low fan speed,
：middle fan speed ：high fan speed，
：Auto running； ：Cool running；
2 Run Mode
3 Setup temp Temperature value of setting
4 Swing function Swing is on
5 Sleep mode Sleep mode is on
6 Time value Timing value of setting
7 OPER The controller is on
：Dry Running； ：Fan Running；
：Heat running (Heat and Cool unit only)
23
COMMERCIAL AIR CONDITIONER DUCT TYPE SPLIT AIR CONDITIONER
4 WIRED REMOTE CONTROLLER
4.1 Operation View
MODE
SLEEP
TIMER
ON/OFF
NO. Name Function description
1 MODE button
2 Increasing button Press this button to increase the setup temp.
3 Decreasing button Press this button to decrease the setup temp.
4 Fan speed button The button is invalid
5 Sleep button Press the button to set sleep/swing function
6 Timer button Press the button to set timer function
7 On/off button Press the button to set start or close unit
8 Remote window Get remote information
9 LCD display Display unit information
Press the button to select the mode,
Cooling, heating, fan or auto mode.
Note:
1) MEMORY function setup: At unit turned off, press “MODE” button for 10 seconds, could
switch whether turn on or off the unit state after powered off.
2) Lock function: Press “▲”and“▼” at the same time for 5 seconds, the set temp. will display
“EE” and shield, all buttons will sound; and repress the“▲”and “▼”at the same time for 5
seconds, the lock function will be released.(for details, please read corresponding parts of
manual).
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COMMERCIAL AIR CONDITIONER DUCT TYPE SPLIT AIR CONDITIONER
4.2 Display View
MODE
SLEEP
TIMER
ON/OFF
NO. Name Function description
1 Timer value Display time value
2 Timer on/off
3 Fan speed display
: display timer on, : display timer off,
When fan is on,
displays circularly; when fan is off,
nothing displays.
4 Set temp display
5 Run mode display
Display set temp value, its range is 16~30
: auto mode, : cool mode, : dry mode,
: fan mode, : heat mode(only cool and heat unit)
6 Indoor temp display Display surrounding temp indoor
7 Outdoor temp display The display is invalid
8 Frost display When unit frosts ,it display
9 Sleep display Display sleep at Sleep mode
10 Swing display The display is invalid (no swing function)
11 Error display When unit error, error code display
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