Ballu KFR-3601GW User manual

-
KFR 3601GW/BPE
KFR- 4001GW/BPE
KFR- 3502GW/BPE
SERVICE
MANUAL
SPLIT TYPE INVERTER AIR CONDITIONER
CONTENTS
1.PART NAMES AND FUNCTIONS...................
2.SPECIFICATION............................................
3.OUTLINES AND DIMENSIONS.......................
4.WIRING DIAGRAM.........................................
5.REFRIGERANT SYSTEM DIAGRAM...............
6.PERFORMANCE DATA..................................
7.CONTROL MODE ..........................................
8.TROUBLESHOOTING....................................
9.SERVICE FLOW CHART...............................
10.SENSOR PARAMETER................................
11.DISASSEMBLY INSTRUCTIONS...................
12.PARTS LIST.................................................

1. PART NAMES AND FUNCTIONS
Vertical Vane
INDOOR UNIT
OUTDOOR UNIT
Tubes and cable
Drainage hose
Drainage hole (bottom)
Air outlet
Air inlet (rear and side)
1
KFR-3601W/BPE
KFR-4001W/BPE
KFR-3601G/BPE
KFR-4001 /BPEG
Switch button
VFD screen
Power plug
Air outlet
Air inlet grille
Front cover
Air filter Air fresh filter Indoor coil sensor(inside)
Horizontal Vane

Tubes and cable
Drainage hose
Air inlet (rear and side)
Air outlet
Drainage hole(bottom)
Air inlet Air filter
Front panel
Horizontal Vane
Power plug
Air outlet
Vertical vane
Color display screen
INDOOR UNIT
KFR-3502G/BPE
KFR-3502G/BPE
OUTDOOR UNIT
2
1. PART NAMES AND FUNCTIONS

REMOTE CONTROL UNIT
1Сʱ
AA
T.SETTINGT.SETTING
C
A
A
A
HOUR
ON
OFF
H.P. ON/OFF TEMP.
SLEEP
FLAP
ON OFF
SET CLR
SENSOR
BATTERY
FAN/MUTE
SOFT
RESET
TEMP.DISP
ATR EX.
MODE
Sensor
Testing the ambient temperature
of the remote control unit
LCD
Displaying the running condition.
Hi-power running button
Sleep button
Press the button, the appliance enter
sleep mode.
Flap
Up-down adjustment
Timer on/off button
Setting the time of appliance on/off.
Set/cancel timer button
Set or cancel the time of appliance
on/off.
A/C sensor button
Press the button if the remote
control unit is liable to be affected by
the heat resource, such as electric
blanket, radiator or sunlight, this will
use the sensor of indoor unit, the
symbol will appear on the LCD.
Transmitter
Transmitting signals to the indoor unit,
the symbol will appear on the top of
LCD.
On/Off button
Press the button to run, press again
to cease.
Temperature setting button
Press the button marked " "or
the temperature.
Air exchange button
When this function works, the air
can be keep fresh.
Mode selection button
Auto heating dehumidification
Fan cooling
Fan speed selection button
Temperature displaying button
setting the temperature in the screen
of indoor unit
Reset button
Press the button after batteries are
loaded and indication appears on
LCD.
Duel energy-saving
This function can be used for
Restricting the max. electric current
by control software.
Sliding cover
Battery compartment
" " to increase or decrease
3
KFR-3601G/BPE
KFR-4001 /BPEG
1. PART NAMES AND FUNCTIONS
REMARK: The remote controller transmits signal to indoor unit at 3 minutes intervals. If the indoor unit
has not received the signal for more than 10 minutes due to remote controller missing or other reason,
the sensor on indoor unit will be used for detecting indoor temperature automatically. Here, ambient
temperature of remote controller is likely to slightly different from that detecting by the indoor unit,
temperature will be compensated automatically. When the remote controller is missing or the batteries
are exhausted, please use the temporary switch.

AA
T.SETTINGT.SETTING
C
A
A
A
HOUR
ON
OFF
H.P. ON/OFF TEMP.
SLEEP
FLAP
ON OFF
SET CLR
SENSOR
BATTERY
FAN/MUTE
SOFT
RESET
MODE
Sensor
Testing the ambient temperature
of the remote control unit
LCD
Displaying the running condition.
Hi-power running button
Sleep button
Press the button, the appliance enter
sleep mode.
Flap
Up-down adjustment
Timer on/off button
Setting the time of appliance on/off.
Set/cancel timer button
Set or cancel the time of appliance
on/off.
A/C sensor button
Press the button if the remote
control unit is liable to be affected by
the heat resource, such as electric
blanket, radiator or sunlight, this will
use the sensor of indoor unit, the
symbol will appear on the LCD.
Transmitter
Transmitting signals to the indoor unit,
the symbol will appear on the top of
LCD.
On/Off button
Press the button to run, press again
to cease.
Temperature setting button
Press the button marked " "or
" " to increase or decrease
the temperature.
Mode selection button
Auto heating dehumidification
Fan cooling
Fan speed selection button
Reset button
Press the button after batteries are
loaded and indication appears on
LCD.
Duel energy-saving
This function can be used for
Restricting the max. electric current
by control software.
Sliding cover
Battery compartment
1 HOUR
REMOTE CONTROL UNIT
KFR-3502G/BPE
4
1. PART NAMES AND FUNCTIONS
REMARK: The remote controller transmits signal to indoor unit at 3 minutes intervals. If the indoor unit
has not received the signal for more than 10 minutes due to remote controller missing or other reason,
the sensor on indoor unit will be used for detecting indoor temperature automatically. Here, ambient
temperature of remote controller is likely to slightly different from that detecting by the indoor unit,
temperature will be compensated automatically. When the remote controller is missing or the batteries
are exhausted, please use the temporary switch.

2.SPECIFICATION
5
Model KFR-3601GW/BPE KFR-4001GW/BPE
Function Cooling Heating Cooling Heating
Power supply a.c 220V~ 50Hz a.c 220V~ 50Hz
Capacity KW 3.6 5.0 4.0 6.0
Dehumidification l /h 1.5 1.8
Capacity
Air flow m3/h 540 650 630 680
Power outlet A16 16 16 16
Running current A6.35 7.8 8.0 11.5
Power input W1.34 1.58 1.54 2.14
Auxiliary heater A(KW) ----- ----- ----- -----
Power factor %90 90 90 90
Starting current A17 17
Compressor motor current A 6.2 6.2
Electrical
data
Fan motor current A0.2 0.2
Coefficient of performance(C.O.P) 2.68 3.16 2.6 2.8
Model SGZ20EG2UY SGZ20EG2UY
Output W1100 1100
Compressor
Winding resistance (at20 ) 1.05 1.05
Model YYW16-4-411 YYW16-4-411
340 ( main) 340 ( main)
Indoor
fan motor Winding resistance (at20 )
395(assisitant) 395(assisitant)
Model UE6T-C41A4 UE6T-C41A4 Outdoor
fan motor Winding resistance (at20 ) 151.4 151.4
Width mm 860 860
Height mm 285 285
Indoor unit
Depth mm 235 235
Width mm 800 800
Height mm 555 555
Dimensions
Outdoor unit
Depth mm 260 260
Indoor unit kg 11.5 11.5Wei gh t
Outdoor unit kg 39.0 39.0
Air direction 66
Indoor unit dB 39 40 42 43Sound lever
(Hi) Outdoor unit dB 48 49 48 49
Indoor unit rpm 1100 1200 1220 1250Fan speed
(Hi) Outdoor unit rpm 680 680
Indoor unit 44Fan speed
regulator Outdoor unit 33
Refrigerant filling capacity(R-22) kg 1.10 1.18
RT1(at25 ) k 58 58
RT2(at25 ) k 5.3 5.3
Special
remarks
Thermitstor
RT3(at25 ) k 55
NOTE :Test conditions
Cooling : Idoor DB27 / WB19 , Outdoor DB35 / WB24
Heating: Indoor DB20 / WB15 , Outdoor DB7 / WB 6
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°Ñ
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°Ñ
°Ñ °Ñ
°Ñ
°Ñ
°Ñ
°Ñ
°Ñ

2.SPECIFICATION
6
Model KFR-3502GW/BPE
Function Cooling Heating
Power supply a.c220 50Hz
Capacity KW 3.5 4.8
Dehumidification l /h 1.8 ——
Capacity
Air flow m3/h 540 640
Power outlet A16
Running current A6.5 10.0
Power input W7.8 12.0
Auxiliary heater A(KW) ——
Power factor %90 90
Starting current A20
Compressor motor current A 7.2
Electrical data
Fan motor current A 0.2
Coefficient of performance(C.O.P) 2.7 3.0
Model SHV130FGEC
Output W650
Compressor
Winding resistance (at20 ) 0.87
Model YZW16W-4-411Indoor
fan motor Winding resistance (at20 ) KFR-3601GW/BPE
Model UE6T-C41A4Outdoor
fan motor Winding resistance (at20 ) 151.4
Width mm 285
Height mm 220
Indoor unit
Depth mm 805
Width mm 316
Height mm 555
Dimensions
Outdoor unit
Depth mm 867
Indoor unit kg 9.5Wei gh t
Outdoor unit kg 39
Air direction 66
Indoor unit dB 39/30 39/33Sound lever
(Hi) Outdoor unit dB 48/41 48/41
Indoor unit rpm 1180 1230Fan speed
(Hi) Outdoor unit rpm 750 750
Indoor unit 44Fan speed
regulator Outdoor unit 33
Refrigerant filling capacity(R-22) kg 1.15
RT1(at25 ) k 58
RT2(at25 ) k 5.3
Special remarks
Thermitstor
RT3(at25 ) k 5
NOTE :Test conditions
Cooling : Idoor DB27 / WB19 Outdoor DB35 / WB24
Heating: Indoor DB20 / WB15 Outdoor DB7 / WB 6
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°Ñ
°Ñ
°Ñ
°Ñ
°Ñ
°Ñ °Ñ
°Ñ
°Ñ °Ñ
°Ñ
°Ñ
°Ñ

5.REFRIGERANT SYSTEM DIAGRAM3.OUTLINES AND DIMENSIONS
KFR-3601W/BPE KFR-4001W/BPE KFR-3502W/BPE
9

4.WIRING DIAGRAM
ELECTRICAL WIRING DIAGRAM
0
1
2
3
4
(L) AC IN1
AC OUT1
ACIN2(CN06.2)
+5V(CN01.1)
GND(CN01.2)
CS(CN01.3)
SO(CN01.4)
CLK(CN01.5)
REMOTE(CN01.6)
BRIGHT(CN02.1)
-27V(CN02.2)
4.6B(CN02.3)
4.6A(CN02.4)
+5V(CN08.1)
GND(CN08.2)
CS(CN08.3)
SO(CN08.4)
SCK(CN08.5)
REMOTE(CN08.6)
BRIGHT(CN02.1)
-27V(CN02.2)
4.6B(CN02.3)
4.6A(CN02.4)
FLAPI(CN16.1)
FLAPI(CN16.2)
FLAPI(CN16.3)
FLAPI(CN16.4)
FLAPI(CN16.5)
FLAP2(CN17.1)
FLAP2(CN17.2)
FLAP2(CN17.3)
FLAP2(CN17.4)
FLAP2(CN17.5)
VCC(CN09.1)
GND(CN09.2)
VEN(CN09.3)
FAN(CN07.1)
FAN(CN07.2)
FAN(CN07.3)
+5V(CN11.1)
PH(CN11.2)
GND(CN11.3)
SW(CN15.1)
GND(CN15.2)
SI(CN06.1)
TRANSE(CN04.1)
TRANSE(CN04.2)
TRANSE(CN05.1)
TRANSE(CN05.2)
TRANSE(CN10.1)
TRANSE(CN10.3)
CAP(CN06.1)
CAP(CN06.2)
4.6A(CN01.1)
MID(CN01.2)
4.6B(CN01.3)
9V(CN01.4)
9V(CN01.5)
AC22V(CN01.6)
AC22V(CN01.7)
(L)
(N)
LEN
(SI)
ROOM(CN20.1)
ROOM(CN20.2)
COIL(CN19.1)
COIL(CN19.2)
1
2
3
4
5
1
2
3
4
5
1
2
3
1
2
3
1
2
3
1
2
TERM.PANEL CONTROL BOARD
EVAP.
POWER TRAN.
POWER TRAN.
POWER WIRE
INDOOR SENSOR
EVAP. SENSOR
FAN CAP.
ELECTRICAL WIRING DIAGRAM INDICATOR BOARD
STEP. MOTOR 1
STEP. MOTOR 2
AIR EX. FAN
FAN MOTOR
PHASE TEST
POWER SWITCH
BRN
BLK
WHT
RED
BLK
BLK
VUPC(CN12.1)
VUP1(CN12.2)
VVPC(CN12.4)
VVP1(CN12.5)
VWPC(CN12.7)
VWP1(CN12.8)
VNC(CN12.10)
VN1(CN12.11)
VUPC(CN15.1)
VUP1(CN15.2)
VVPC(CN15.4)
VVP1(CN15.5)
VWPC(CN15.7)
VWP1(CN15.8)
VNC(CN15.10)
VN1(CN15.11)
SI(CN09)
IN2
IN1
E
OUT1
OUT2
OUT3
AC
AC
++
PTC
AC IN1(CN04)
AC IN2(CN05)
DC OUT1(CN11)
DC OUT2(CN01)
P(CN07)
N(CN06)
W(CN03)
V(CN04)
U(CN05)
AC OUT1(CN03)
VFC(CN05.1)
GND(CN05.2)
+5V(CN05.3)
Z(CN05.4)
Y(CN05.5)
X(CN05.6)
W(CN05.7)
V(CN05.8)
U(CN05.9)
VFC(CN18.1)
GND(CN18.2)
+5V(CN18.3)
Z(CN18.4)
Y(CN18.5)
X(CN18.6)
W(CN18.7)
V(CN18.8)
U(CN18.9)
DC IN1(CN02)
SV(CNI0.1)
SV(CNI0.2)
FAN CAP(CN06.1)
DC IN2(CN07)
PTC
FAN CAP(CN06.2)
PTC
GAIKI(CN17.1)
GAIKI(CN17.2)
COIL(CN13.1)
COIL(CN13.2)
COMP(CN16.1)
COMP(CN16.2)
C(CN08.1)
AC(CN08.2)
H(CN08.3)
M(CN08.4)
L(CN08.5)
THERMO(CN12.1)
THERMO(CN12.2)
R S T
EARTH
C
AC
H
M
L
EARTH
1
2
3
4
+
_
OUTDOOR UNIT
FUSE
FIL. BOARD
TERM. PANEL
REC. BRIDGE
INDUCTOR
CAP.
ELEC. CAPACITOR
OUTDOOR SENSOR
CONDENSOR SENSOR
DISCHARGE SENSOR
OLP
ELECTRICAL WIRING DIAGRAM
CONTROL BOARD IPM BOARD
4-WAY VALVE
FAN CAP.
COMPRESSOR
FAN MOTOR
BLK BLK
BLK
WHT
WHT
WHT
RED
WHT
YEL/GRN
YEL/GRN
YEL/GRN
YEL/GRN
YEL
YEL
ORG
ORG
ORG
BLK
BLK
BRN
RED
WHT
BLU
BLK
BLU
YEL
YEL
RED
RED
BLU
10
KFR-3601GW/BPE
KFR-4001 /BPEGW

ELECTRICAL WIRING DIAGRAM
0
1
2
3
4
(L) L IN
L OUT1
ACIN2(CN03.2)
+5V(CN01.1)
GND(CN01.2)
CS(CN01.3)
SO(CN01.4)
CLK(CN01.5)
REMOTE(CN01.6)
SW(CN01.7)
-27V(CN02.1)
4.6B(CN02.2)
4.6A(CN02.3)
+5V(CN08.1)
GND(CN08.2)
CS(CN08.3)
SO(CN08.4)
SCK(CN08.5)
REMOTE(CN08.6)
SW(CN08.7)
-27V(CN02.2)
4.6B(CN02.3)
4.6A(CN02.4)
FLAP2(CN17.1)
FLAP2(CN17.2)
FLAP2(CN17.3)
FLAP2(CN17.4)
FLAP2(CN17.5)
FAN(CN07.1)
FAN(CN07.2)
FAN(CN07.3)
+5V(CN11.1)
PH(CN11.2)
GND(CN11.3)
SI(CN03.1)
TRANSE(CN04.1)
TRANSE(CN04.2)
4.6A(CN01.1)
MID(CN01.2)
4.6B(CN01.3)
9V(CN01.4)
9V(CN01.5)
AC22V(CN01.6)
AC22V(CN01.7)
(L)
(N)
LEN
(SI)
ROOM(CN20.1)
ROOM(CN20.2)
COIL(CN19.1)
COIL(CN19.2)
1
2
3
4
5
1
2
3
1
2
3
ELECTRICAL WIRING DIAGRAM
TERM.PANEL CONTROL BOARD
INDICATOR BOARD
EVAP.
POWER TRAN. POWER WIRE
STEP MOTOR
FAN MOTOR
PHASE TEST
INDOOR SENSOR
EVAP. SENSOR
BRN
BLK
WHT
RED
KFR-3502G/BPE
11
4.WIRING DIAGRAM

VNC(CN12.10)
VN1(CN12.11)
VNC(CN15.10)
VN1(CN15.11)
SI(CN09)
IN2
IN1
E
OUT1
OUT2
OUT3
YEL/GRN
AC
AC
++
PTC
AC IN1(CN04)
AC IN2(CN05)
DC OUT1(CN11)
DC OUT2(CN01)
P(CN07)
N(CN06)
W(CN03)
V(CN04)
U(CN05)
AC OUT1(CN03)
VFC(CN05.1)
GND(CN05.2)
+5V(CN05.3)
Z(CN05.4)
Y(CN05.5)
X(CN05.6)
W(CN05.7)
V(CN05.8)
U(CN05.9)
VFC(CN18.1)
GND(CN18.2)
+5V(CN18.3)
Z(CN18.4)
Y(CN18.5)
X(CN18.6)
W(CN18.7)
V(CN18.8)
U(CN18.9)
DC IN1(CN02)
SV(CNI0.1)
SV(CNI0.2)
FAN CAP(CN06.1)
DC IN2(CN07)
PTC
FAN CAP(CN06.2)
PTC
GAIKI(CN17.1)
GAIKI(CN17.2)
COIL(CN13.1)
COIL(CN13.2)
COMP(CN16.1)
COMP(CN16.2)
C(CN08.1)
AC(CN08.2)
H(CN08.3)
M(CN08.4)
L(CN08.5)
R S T
EARTH
C
AC N
H
M
L
EARTH
1
2
3
4
+
_
FUSE
TERM. PANEL
REC. BRIDGE
CONTROL BOARD IPM BOARD
INDUCTOR CAP.
ELEC. CAPACITOR
OUTDOOR SENSOR
CONDENSOR SENSOR
DISCHARGE SENSOR
4-WAY VALVE
FAN CAP.
COMPRESSOR
FAN MOTOR
BLK BLK
RED
FIL. BOARD
WHT
YEL/GRN
BLK
WHT
WHT
WHT
YEL
YEL
ORG
ORG
ORG
BLU
BLU YEL
YEL
BRN
BLK
BLK
BLK
RED
WHT
BLU
YEL/GRN
YEL/GRN
KFR-3502W/BPE
12
4.WIRING DIAGRAM

5.REFRIGERANT SYSTEM DIAGRAM
MAX. REFRIGERANT PIPING LENGTH
Piping size O.D : mm Length of connecting pipe : m
Modles
Refrigerant Piping
Max. Length : m
A Gas Liquid Indoor unit Outdoor unit
KFR-3502GW/BPE 15 12.7 6.35
KFR-3601GW/BPE 1512.7 6.35
KFR-4001GW/BPE 15 12.7 6.35
MAX. HEIGHT DIFFERENCE
Indoor
unit
`
Refrigerant piping
Max. length
Max. Height A
difference 5m
Outdoor unit
ADDITIONAL; REFRIGERANT CHARGE(R-22 : g)
Refrigerant piping length (one way)Modles Outdoor unit precharged
(up to 7m) 7m 10m 15m
KFR-3502GW/BPE 1150 075 200
KFR-3601GW/BPE 1100 075 200
KFR-4001GW/BPE 1180 075 200
14

COOLING CAPACITY
Outdoor intake air DB
20 25 30 35 40 45
model
Indoor
Intake Air
(WB )CA PC CA PC CA PC CA PC CA PC CA PC
16 3787 1425 3671 1439 3420 1498 3123 1501 2855 1564 2649 1637
18 4117 1459 3876 1445 3775 1525 3475 1527 3244 1637 2879 1643
20 4301 1436 4160 1434 3947 1499 3644 1501 3367 1583 2958 1599
KFR-3601GW/BPE
(220V/50Hz)
22 4492 1405 4326 1432 4223 1488 3930 1495 3632 1584 3235 1613
16 3622 1296 3425 1409 3308 1512 3000 1520 2775 1598 2473 1590
18 3665 1295 3330 1176 3380 1350 3068 1359 2789 1434 2433 1430
20 3811 1296 3792 1406 3633 1542 3417 1528 3128 1584 2792 1606
KFR-3502GW/BPE
(220V/50Hz)
22 3908 1293 3941 1420 3882 1518 3600 1530 3370 1623 2973 1617
HEATING CAPACITY
Outdoor intake air WB
-15 -10 -5 0 5 10 15
model
Indoor
Intake Air
(DB )CA PC CA PC CA PC CA PC CA PC CA PC CA PC
153452 1759 3871 1746 4242 1781 4792 1805 5362 1802 5209 1498 5619 1492
20 3341 1896 3694 1871 4027 1815 4447 1787 4908 1776 4857 1499 5230 1495
KFR-3601
GW/BPE
（220）25 3257 1776 3465 1781 3697 1774 4198 1838 4576 1800 4488 1494 4844 1511
15 3462 1754 4075 1739 4627 1788 4780 1644 5133 1582 5123 1457 5017 1385
20 3362 1751 3861 1781 4285 1761 4545 1765 5022 1663 5092 1579 5113 1390
KFR-3502
GW/BPE
25 3265 1743 3638 1793 3963 1744 4296 1777 4706 1684 4934 1625 4991 1453
Note CA: Capacity(W)
PA: Power consumption(Kw)
6.PERFORMANCE DATA
1
6. PERFORMANCE DATA
6
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7.CONTROL MODE
17
1. Automatic
1.1 When the air conditioner is switched on and the remote controller is set to Auto mode, the air
conditioner will select running modes automatically according to the difference between the room
temperature and the setting temperature.
1.2 The running mode will be set when the machine is first switched on. Once set, the running mode
cannot be changed within 30 minutes.
1.3 If the difference between the room temperature and the setting temperature exceeds 3 degrees,
change the running mode immediately.
1.4 If the machine is turned off and restarted using the remote controller, the above conditions are
still good.
1.5 If the machine is powered off and restarted, the running mode must be re-selected.
1.6 The running frequency will be determined by the temperature difference.
2. Cooling
2.1 In the cooling mode, the preset temperature is determined by the remote controller. The
temperature range is 16 —30 .
2.2 The compressor will start immediately when the machine is first powered on; it will take at least
3min for the compressor to restart if the machine is restarted.
2.3 The fan speed changes in auto mode.
Tsetting-Tindoor Fan speed Tsetting-Tindoor Fan speed
0Low 0Low
1Mid 1Mid
2Mid 2Mid
3Mid 3Mid
4Mid 4High
Temperature
difference
5High
Temperature
difference
5High
2.4 Outdoor fan speed
T outdoor 28 High
T
outdoor 28 Determined by the outdoor coil tube temperature T outdoor coil tube, when
T outdoor coil tube 40 High
35 T
outdoor coil tube 40 Mid
T
outdoor coil tube 35 Low
2.5 The four-way valve is off.
Dehumidification
1.1 In the dehumidification mode, the temperature is determined by the remote controller. The
temperature range is 16 —30 . The controller will determine the running mode according to
the indoor and outdoor temperature difference.
1.2 When the room temperature is 2 higher than the preset temperature, cooling run will be started.
When the temperature difference between the indoor and outdoor is lower than or equal to 2 ,the
drying mode will be started. When running in the drying mode, the compressor will alternate between
the low and high frequencies.
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7.CONTROL MODE
1.1 In this mode, the outdoor fan will work as follows:
Outdoor temperature 28 High
Outdoor temperature 28 and condenser temperature 40 High
Outdoor temperature 28 and 40 condenser temperature 35 Mid
Outdoor temperature 28 Low
Heating
1.1 In the heating mode, the set temperature is determined by the remote controller. The temperature
range is 16 —30 .
1.2 The compressor will start immediately when the machine is switched on; it will take at least 3min
for the compressor to restart if the machine is restarted.
1.3 If the compressor is started, it must run at least 5min.
1.4 When the air conditioner is switched off, the compressor will stop and the outdoor four-way valve
will be delayed off. The remaining heat will be discharged by the indoor unit before it stops.
1.5 Cold air prevention. When the air conditioner is started, the indoor unit will not run immediately.
It will not start until the indoor heat exchanger is warmed up.
1.6 During operation, when the preset temperature is met, the indoor compressor will stop to cause
the indoor fan to stop. So when the compressor restarts, the cold air prevention will still be
working.
1.7 In this mode, the outdoor fan will work as follows:
Outdoor temperature 24 : Low
15 outdoor temperature 10 : Mid
Outdoor temperature 10 : High
1.8 The four-way valve is in conducting state.
2. Defrosting
2.1 The defrosting is done through changing the flow direction of refrigerant inside of the four-way
valve.
2.2 Defrosting conditions:
Continuous heating run for more than 30min
During single machine operation, T outdoor – T outdoor coil 7 and lasts 5 minutes
2.3 Defrosting process:
Compressor and outdoor fan motor off four-way valve off compressor on defrosting
conditions met compressor off four-way valve on compressor on outdoor fan on
end
3. Ventilation(Fan mode)
During fan operation, only the indoor fan and the flap are running in the setting mode. If the fan speed
is set to Auto, it will enter in low-speed run.
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7.CONTROL MODE
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1. Energy-saving
4.1 Press the SOFT button on the remote controller to activate the energy-saving function. Now the
energy-saving symbol appears on the screen. Press the button again to cancel this function, the
corresponding symbol will go off.
4.2 During energy-saving mode, the electric current will be limited to 60% of the rating level through
adjusting the compressor revolving frequency and limiting the maximum current.
4.3 This mode cannot be cancelled by the switching-on and off operations. When the machine is
turned off, the energy-saving symbol will remain on.
2. Sleeping
5.1 During heating or cooling mode, press the SLEEP button on the remote controller, the sleeping
mode can be set or cancelled and the sleeping symbol on the screen will light up or go off
accordingly.
5.2 Heating: After this function is enabled, the setting temperature will fall down 3 degrees within an
hour. Two hours later, the temperature will fall down another 4 degrees, and the machine will be
turned off after running for another 5 hours.
5.3 Cooling: After this function is started, the setting temperature will rise 1 degree within an hour,
and the machine will be turned off automatically after another 7 hours.
5.4 The default mode is sleeping off. The sleeping function will be cancelled after the machine is
switched off.
3. High-power
In this mode, the indoor fan speed will go into high level. The compressor runs at the max permissible
frequency, which will be displayed on the screen. The original running mode will be automatically
resumed after running for 15 minutes.
4. Temporary switch
7.1 If the remote controller is missing, press the temporary switch and the system starts in the
automatic mode, press the switch again to stop the system. Automatic mode follows:
A indoor temperature 26 cooling mode temperature setting 26
B indoor temperature 23 heating mode temperature setting 26
C 23 indoor temperature 26 fan mode
Indoor fan speed is automatic in automatic mode.
7.2 Hold down the temporary switch for 5 seconds or longer and the system is forced to run in the
cooling mode regardless of indoor temperature.
NOTE:
Operating frequency and rated values of the compressor:
Item KFR-3601GW/BPE KFR-4001GW/BPE KFR-3502GW/BPE
Hz
Mode
Frequency
range
Rated
frequency
Frequency
range
Rated
frequency
Frequency
range
Rated
frequency
Cooling 30-110 84 30-110 94 15-110 82
Heating 30-137 96 30-137 112 15-137 92
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