Split air conditioner
Wall mounted Type
Service manual
R410A series
CONTENTS
2
P
1
Contents
Service and Maintenance of the Air Conditioner
1
4
11
11 11
16
6
Performance Parameters
Disassembly and reassembly
Installation Explanations
KF(R)-25GW KF(R)-35GW
KF(R)-45GW KF(R)-45GW
23 23
27
31
KF(R)-25GW KF(R)-35GW
KF(R)-45GW
Remote controller
Wiring diagram
32
21
Troubleshooting
23
Exploded views and part list
KF(R)-45GW
Remote controller
4 Performance Parameters
2
SERVICE AND MAINTENANCE
1
1
3
3
2
2
1
1
3
3
2
2
Air Conditioner no use for a long time.
Start fan only for 3-4 hours to comple-
tely dry the inside of the indoor unit.
Set COOL mode or HEAT mode,
and select the highest setting tempera-
ture, then fan turns.
Turn off air conditioner, unplug the
power plug,otherwise, the accumul-
ated dirt may cause fire.
FAN OPERATION
Take the batteries out of the remote
controller.
Want to use the Air Conditioner
Clean filters and replace them to origi-
nal position.Clean indoor unit with soft
clothe.
Do not use gasoline, benzene, thinner,
grinding powder, detergent,insecticide
etc. to clean units as they can hurt the
units.
Inlets and outlets of indoor and outdo-
or units shall not be covered/blocked.
Ground wire shall not be loose.
Put in batteries, and plug the power
plug.
3
1
1
4
4
3
3
2
2
1
1
4
4
3
3
2
2
Filters should be cleaned once two every weeks.
Take out filters.
Clean filters with a vacuum cleaner
or by typing them gently. ( If they are
very dirty, wash them in warm water
below 45 dissolved with neutral
scouring agent.)
Clean filters with clean water, then
dry them in cool air.
Insert them at original position, then
push down and close front panel.
Clean deodorization filters and air cleaner.
Take out filters first, then take out
deodorization filter and air cleaner.
Clean deodorization filter, air clean-
er with warm water below 45
dissolved with neutral scouring agent.
Clean filters with clean water, then
dry them in cool air.
Insert them at original position, then
push down and close front panel.
Deodorization filter, Air cleaner, Filters must be cleaned termly.
Open front panel only after air conditioner stops completely.
C
C
SERVICE AND MAINTENANCE
PERFORMANCE PARAMETERS PERFORMANCE PARAMETERS
3
1
4
2
5
6
7
The indicated noise value is from laboratories test before leaving factory.
The rated cooling capacity and rated heating capacity value is tested under below conditions
cooling operation
heating operation
indoor
indoor
outdoor
outdoor
27
20
(DB)
(DB)
35
7
(DB)
(DB)
19
15
(WB)
(WB)
24
6
(WB)
(WB)
All above should be changed without notice.There are latest and accurate specifications on the name plate of
your air conditioner.
During COOL mode, working temperature range is: 18 ~43 . During HEAT mode, working temperature
range is:-5 ~24 . If not, the cooling and heating efficiency is not well.
If air conditioner working voltage exceeds 230V 10%. it operates abnormally.
Wiring diagram of air conditioner(indoor unit/outdoor unit) are attached to the unit.
If the power cable or connecting cable is damaged,it must be replaced by the manufacturer or its service agent
or a similar qualified person in order to avoid a hazard.
NOTICE
C
C
C
C
C
C
C
C
C
C
C
C
T1
220-240V , 50Hz
~
Rated cooling/heating capacity (W)
Rated input (W)
Rated input current(A)
Dehumidifying capacity (L/h)
Protection class
Water-proof
Refrigerant (R22) charge amount(g)
Noise dB(A)
Dimension(mm)WXHXD
Model
Function
Power
3
Air flow volume(m /h)
Climate type
Net weight (Kg)
indoor outdoor
heat pump type heat pump type heat pump type
indoor outdoor indoor outdoor
I
T1
Rated input (W)
Rated cooling capacity (W)
Rated input current(A)
Dehumidifying capacity (L/h)
Protection class
Water-proof
Refrigerant (R22) charge amount(g)
Noise dB(A)
Dimension(mm)WXHXD
Model
Function
Power
3
Air flow volume(m /h)
Climate type
Net weight (Kg)
indoor outdoor
cool only type cool only type cool only type
indoor outdoor indoor outdoor
220-240V , 50Hz
~
220-240V , 50Hz
~
220-240V , 50Hz
~
220-240V , 50Hz
~
IP20(indoor) IP24(outdoor)
IP20(indoor) IP24(outdoor)
220-240V , 50Hz
~
4
2700/2800
550
1.2
38
10
285x795x180 520x770x280
34
37 11
48
42 50
1.6
600
800(Cool)/760(heat)
3.7(Cool)/3.5(heat) 5.0(Cool)/5.1(heat)
1100(Cool)/1120(heat)
3600/3850
2700
550
1.2 1.6
600
800
3.7 5.0
1100
3600
285x795x180 520x770x280
38
10
285x795x180 520x770x280
32 35 11
48 42 50
285x795x180 520x770x280
850 1190
850 1190
AUS-09H53R51A/B/C/D01 AUS-18H53RA(G)1
AUS-18C53RA(G)1
5300/5400
900
1800
2.0
48
14 46
58
1760/1720
7.81/7.63
982X198X320 860x370x690
900
1750
2.0
48
14
45
58
1750
7.81
5300
982X198X320 860x370x690
AUS-12H53R51A/B/C/D01
AUS-09C53R51A/B/C/D01 AUS-12C53R51A/B/C/D01
5
1
1
2
2
ABBREVIATION
Ts: Setting Temperature
Tr: Room Temperature
Ti: Indoor defrost sensor temperature
To: Outdoor defrost sensor temperature
OPERATION OF MAIN BOARD
COOL MODE
If Tr > Ts, cool operation is activated. Compressor and outdoor fan are turned on.
Indoor fan runs at the set speed.
If Tr Ts-1 cool operation is terminated. Compressor and outdoor fan are
turned off.
The range of Ts is 16-31
Indoor fan speed can be adjusted for low, medium, high and auto.Compressor will
be delayed for 3 minutes before it is turned on or off.
C
C
Indoor de-ice
This process is checked by the indoor defrost sensor (Ti). If Ti =2 , indoor fan increase
to high speed, when Ti -1 for 1 minute continuously, compressor and outdoor fan are
turn off , indoor fan increases to high speed . When Ti 8 for 5 minutes continuously,
compressor and outdoor are turn on.
de-ice operation is on for more than 8 minutes, system will return to normal operation.
C
C
C
AUTO CHANGEOVER MODE
Per Room
Temperature (RT)
Cooling only type
Mode PRE-SET Temperature PRE-SET Temperature Mode
24
26
RT-2 RT-2
Cool Cool
Dry RT-2
RT-2 Dry
Heat
Heat pump type
above 26
25-26
23-25
below 23
C 24 C C
C
C
C
C
FAN MODE
Indoor fan runs at the set speed while compressor and outdoor fan are turned off.
Indoor fan speed can be adjusted for low, medium and high.
When this mode is selected, the system will change from AUTO COOL to AUTO
DRY to AUTO HEAT mode according to the room temperature and will run
according to the programmed temperature set points as in the following table.
If the unit is restarted after it is stopped for less than 2 hours, it will resume at the
previously established mode before it was stopped. (i.e. AUTO COOL or AUTO
DRY or AUTO HEAT)
If the unit is restarted after it is stopped for more than 2 hours, it will run in a new
mode according to the room temperature when it is restarted.
During this mode the temperature set point can only be set + or - 2 Deg. C of the
room temperature.
C
CONTROLS SPECIFICATION
6
Outdoor de-ice
After 40 minutes of continuous heating operation, if To -4 , the outdoor de-ice
operation is activated. Compressor is turned off. Indoor fan speed reduces to low
speed. After 30 seconds delay, 4 way value and outdoor fan will be turned off, indoor
fan reduces to low speed, 15 seconds later, the compressor is turned on and indoor fan
turn off for the de-ice operation, if To 15 or 10 minutes has elapsed, the de-ice
operation will be terminated. Then, the compressor is turned off. After 30 seconds
delay, 4 way valve and outdoor fan are turned on, 15 seconds later, compressor and
outdoor fan are turned on for return to normal operation, indoor fan is turned on for
return to normal operation also.
C
C
4WV
COMPRESSOR
30S
15S
MAX 10 MINS
HEAT MODE
If Tr < Ts, heat operation is activated. Compressor and outdoor fan are turned on.
If Tr Ts + 1 , heat operation is terminated. Compressor and outdoor fan are
turned off.
The range of Ts is 16 - 31 .
Indoor fan speed can be adjusted for low, medium, high and auto.
Compressor will delay for 3 minutes before it is turned on or off.
C
C
Compressor will delay for 3 minutes before it is turned on or off.
HEAT MODE
OPT
-4
15 C
C
DE-ICE
INDOOR FAN
OUTDOOR FAN
30S
15S
DRY MODE
If Tr 15 , dry operation is activated. Compressor and outdoor fan are
turned on interval.
C
If Tr 23 ,. Compressor and outdoor fan are operating in sequence as follows:
See A of fig1 If Tr<23 Compressor and outdoor fan are operating in sequence
as follows: see B of FIG1.
C
C
Tr 23
Tr 23 < C C
OUTDOOR FAN
INDOOR FAN
COMPRESSOR
8mins 3mins 4mins
1min
2mins 3mins
8mins
1min
2mins
4mins
1min 1min
Fig.1
A
B
CONTROLS SPECIFICATION
7
CONTROLS SPECIFICATION
TIMER
Timer off can only be set when the system is operating.
Timer on can only be set when the system is off.
The maximum set time is 12 hours.
Changing of on/off state will cancel timer mode.
HIGH PRESSURE PROTECTION
If Ti > 47 , the outdoor fan is turned off. After that, if Ti < 42 , the system will
start again.
If Ti > 60 , the compressor is turned off. After that, if Ti < 53 , the system will
start again.
C C
C C
Compressor ON
Outdoor Fan OFF
Compressor ON
Outdoor Fan ON
Normal Operation zone
Compressor ON
Outdoor Fan OFF
(High pressure protection)
Compressor OFF
Outdoor Fan OFF
(High pressure protection)
Compressor ON
Outdoor Fan ON
Normal Operation zone
Temp Increasing
Temp decreasing
09 type
If Ti > 50 , the outdoor fan is turned off. After that, if Ti < 47 , the system will
start again.
If Ti > 63 , the compressor is turned off. After that, if Ti < 50 , the system will
start again.
C C
C C
12 type
If Ti > 50 , the outdoor fan is turned off. After that, if Ti < 45 , the system will
start again.
If Ti > 60 , the compressor is turned off. After that, if Ti < 50 , the system will
start again.
C C
C C
18 type
47 C (09type)
50 C (12 18type)
42 C (09type)
45 C (18type)
47 C (12type)
60 C
53 C (09 12type)
50 C (18type)
8
In cool mode, if Tr-Ts < 0 , indoor fan is run at low speed.
If 0 <Tr-Ts<2 , if indoor fan is running at low speed, there will be
no change in speed , if fan is running at medium speed ,there will be
no change in speed ,if indoor fan is run at high speed ,it will change
to medium speed.
If 2 <Tr-Ts<4 indoor fan keep original speed.
If Tr-Ts>4 indoor fan is run at high speed.
AUTO FAN SPEED
C C
C
C
0
Tr-Ts
HIGH SPEED
MEDIUM SPEED
LOW SPEED
C 2C 4C
C
C
In heat mode, if Tr-Ts < 1 , indoor fan is run at low speed.
If 1 <Tr-Ts<3 , if indoor fan is run at low speed, there will be no
change in speed , if fan run at medium speed ,there will be no change
in speed , if indoor fan is run at high speed ,will change to medium
speed .
If 3 <Tr-Ts<5 indoor fan keep original speed.
If Tr-Ts>5 indoor fan is run at high speed.
C C
C
C
0
Tr-Ts
HIGH SPEED
MEDIUM SPEED
LOW SPEED
C 2C 4C
C
C
CONTROLS SPECIFICATION
SLEEP MODE
In cool mode, after sleep mode is set, Ts will increase 1 in first hours, will
increase 2 in second hours and will operation as the temperature
In heat mode, after sleep mode is set, Ts will decrease 2 in first hours, will
increase 2 in second hours and will operation as the temperature
Changing of operation mode will cancel sleep mode.
C
C
C
C
HEAT MODE
COOL MODE
Ts
Ts-1
Ts-2
Ts
Ts+1
Ts+2
1 HR 1 HR 1 HR
Time
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MANUAL OPERATION BUTTON
3
3
OPERATION OF CONTROL PANEL ON INDOOR UNIT
Every press of this button will turn the system on or off.
SYSTEM LED LIGHT
When system is operating, the RUN light is on. When system is off, the light is off.
(Cool only type)
Every time the switch is pressed, it changes in sequence of
COOL STOP.
(Heat pump type)
Every time the switch is pressed, it changes in sequence of
COOL HEAT STOP.
MANUAL run operation procedure as the following:
In the first 30 minutes operation, the compressor don't stop ,indoor fan hold high speed. After
30 minutes, emergency run operation start.
Mode
Setting temperature
Deflector
Swing
Swing
HEAT
Fan speed
High
High
COOL
24
C
24
C
When sleep mode is operating, the SLEEP light is on. When sleep mode is off,
the light is off.
When timer is operating, the TIME light is on. When time is over, the light is off.
CONTROLS SPECIFICATION
MANUAL SWING (STEPPING MOTOR)
If the indoor fan is operating, the louver will swing or can be stopped at a preferred
location in any mode. The louver change location follow the order of :
If a command is received, the system will respond with a beep.
BUZZER
9
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Roadstar Split Air Conditioner Wall Mounted Type R410A Series Service Manual
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