SERVICE MANUAL
FREE COMBI SERIES
FC-C12AI, FC-C18AI
2 Technical specifications
Item
Fan Motor Speed (r/min) (SH/H/M/L)
FC-C12AI
FC-C18AI
820/720/620
820/720/620
11
11
/
/
Fan Motor Capacitor (uF)
1.5
2.5
Fan Motor RLA(A)
0.2
Output of Fan Motor (w)
Input Power of Heater (w)
0.2
centrifugal fan–1
Fan Type-Piece
φ281X148
Diameter-Length (mm)
Aluminum fin-copper tube
Evaporator
Φ9.52
Pipe Diameter (mm)
Row-Fin Gap(mm)
Coil length (l) x height (H) x coil width (L)
Swing Motor Model
2-1.5
2.-1.5
953X203.2X38.1
953X203.2X38.1
MP35EA
MP35EA
4
4
Output of Swing Motor (W)
T3.15AL 250V
Fuse (A)
Sound Pressure Level dB (A) (H/M/L)
44/40/36
47/44/39
Sound Power Level dB (A) (H/M/L)***
54/50/46
57/54/49
Main unit:600x600x230
Dimension (W/H/D) ( mm)
Panel:650x650x50
Main unit:848X678X310
Dimension of Package (L/W/H)( mm)
Panel:730X670X102
20/27
Net Weight /Gross Weight (kg)
The above data is subject to change without notice. Please refer to the nameplate of the unit.
2
Cassette Type Series
3 Part name
Ait out
Wall Pipe
Guide louver
Air intake grille
Drainage hose
Air in
Connection pipe and
connection electric
wire
Wireless remote control
3
4 Outline and installation dimension
290
Outline Dimension
650
650
Installation Dimension
230
Above 200mm
Above
Above
Above 1800mm
Ground
4
Cassette Type Series
5 Electrical circuit diagram
These circuit diagrams are subject to change without notice, please refer to the one supplied with the unit.
5
6
Controller Function Manual and Operation Instruction
Controller Function Manual
1 Temperature Parameters
Indoor ambient temperature (Tamb.)
Evaporator tube temperature (Ttube)
2 Basic Functions
2.1 Cooling Mode
1.Temp. can be set in the range of 16-30 .
2. The unit will firstly run at high fan speed for 8s and then switch to preset fan speed.
3. When error of outdoor unit occurs or the unit stops for protection, indoor unit will keep its orignal operating state.
2.2 Dehumidifying Mode
1.Temp. can be set in the range of 16-30 .
2. The unit will firstly run at high fan speed for 8s and then switch to low fan speed.
3. When error of outdoor unit occurs or the unit stops for protection, indoor unit will keep its orignal operating state.
2.3 Fan Mode
1.Temp. can be set in the range of 16-30 .Setting temp on wire controller is defaulted to 26
2. The unit will firstly run at high fan speed for 8s and then switch to preset fan speed.
.
3. When error of outdoor unit occurs or the unit stops for protection, indoor unit will keep its orignal operating state.
2.4 Heating Mode
1.Temp. can be set in the range of 16-30 .
2. If compress stops at required temp. point,indoor fan will run by blowing residual heat.
3. If compress under heating mode stops for error ,indoor fan will run by blowing residual heat.
4. Function of blowing residual heat:
Receiving the information from outdoor unit that compressor is stopped,guide louver of indoor fan becomes level and indoor
fan runs at low speed.
5. Anti-cold air
Guide louver of indoor fan becomes level and indoor fan runs at low speed.If the infomation that compressor is on sent by
outdoor unit is received, indoor fan runs at low speed and guide louver keeps level.After 30s, indoor fan and guide louver
run according to setting speed and setting state.If the infomation that compressor is off sent by outdoor unit is received,guide
louver of indoor fan turns to level position and indoor fan runs at low speed.
2.5 AUTO Mode
1) When Tamb.
, the unit runs under cooling mode, Tpreset=25
2) When Tamb.
modes for cooling only type,Tpreset=
3) When 2 0
. (Tpreset=26
,connected with wire contrller.)
, the unit runs under heating mode for cooling and heating type,Tpreset=
Tamb.
25
.And it runs under fan
.
, the unit keeps its original operating state. If first energization, it runs under fan mode.
2.6 Mode Conflict
If indoor room receives information from outdoor unit which is mode conflict, indoor unit will stop all loads( indoor fan,swing) after
buzzer gives out a beep.Running indicator falshes 7 times and other indicators keep normal.The mode sending to outdoor
unit is also the one received by remote controller.
If indoor room receives information from outdoor unit which is mode conflict after timer on reaches, indoor unit will stop all loads
( indoor fan,auxiliary heater) after buzzer gives out a beep.Running indicator falshes 7 times and other indicators keep
normal.The mode sending to outdoor unit is also the one received by remote controller.
Note: During mode conflict, water pump is controlled according to Control of Water Pump and Water -full Protection.
3. Other Control
3.1 Buzzer
When the unit is energized or receives signal from valid button or remote controller , the buzzer will give out a beep.
3.2 Auto Fan Speed of Indoor Fan
Indoor fan will automatically select high,middle or low fan speed according to ambient temp.During switchover, there is 3min
and 30s delay protection.
6
3.3 Swing Control
Swing can be controlled by swing button of remote controller or wire controller .
As the right figure (Fig.2),A is close position , B is min. position and C is max. position.The angle between A and B is 64
degrees and betwwen B and C is 60 degrees).
$
Swing angle:
1. After energization, stepping motor is reset and swing turns toposition A.If swing is not
active after startup of unit, guide louver will stop at max. position C.If it is active ,guide
louver will swing between min. postion B and max. position C.
As shown in the right figure:
A is close position , B is min. position and C is max. position.The angle between A and B is 30
degrees and betwwen B and C is 60 degrees).
.
%
&
Fig.1
(30 or 60 degrees above indicates turning angle of guide louver).
3.4 Buttons
Test button: After energize, press this button, without pressing any other buttons or input of remote-control signal,into
forced cooling mode according to nominal cooling condition P1.The unit will be in standby state in 5min.
Press this button for above 3s into forced heating mode according to nominal heating condition P1. The unit will be in
standby state in 5min.Press this button again during test state to quit and into standby state.
Auto button: If press this button when the unit is off , the unit will run under auto mode.If press it when the unit is on,
the unit will stop running.
3.5 Sleep Function
Setting SLEEP function under COOL or DRY mode, preset temperature will automatically rise by 1
by another 1
after 2 hours. Preset temperature will rise by 2
after 1hour and rise
in total within 2 hours. After that, the unit will run at
this preset temperature.
Set the Temperature T
Tpreset +2℃
B
B
Tpreset +1℃
B
B
Tpreset
B
B
1 hour
2 hours
Over 2 hours
Setting SLEEP function under HEAT mode, the preset temperature will automatically decrease by 1 after 1hour and
decrease by another 1℃ after 2 hours. Preset temperature will decrease by 2 ℃ in total within 2 hours. After that, the
unit will run at this preset temperature.
1 hour
Tpreset
B
2 hours
Over 2 hours
B
Tpreset -1℃
B
B
preset
Tpreset -2℃ Set the Temperature T
B
B
No sleep function under fan mode and auto mode.
3.4 Timer Function
1.TIMER ON can be set when the unit is stopped. Upon the time as set , the controller will run under preset mode. The
interval of time setting is 0.5h and can be set within 0.5-24h in cycle.
2.TIMER OFF can be set when the unit is running. Upon the time as set ,the unit will be stopped.The interval of time
setting is 0.5h and can be set within 0.5-24h in cycle.
3.7 Communication Malfunction
Communication malfunction occurs, if the unit can not receivie correct signal for 3 minutes continuously.Under
.
AUTO HEAT
or HEAT mode, the unit runs with blowing residual heat.Under other modes, indoor fan keeps its original
.
operating state. If
signal from wire controller can not be received for 1min continuously, wire controller may not be connected.
..
.
7
3.8 Memory Function
1.What can be memorized includes: mode(auto.cool,dry,fan.heat),swing, setting temperature, preset fan speed and so on.
2.If the unit is running before re-energization,the indoor unit will send signal of sta to outdoor unit in 3-min. delay.
3.After re-energization, the unit will run under the state befor power failure. .
4.If indoor unit does not connect wire controller and TIMER function is not set at the last remote control command,the
system after power failure will memorize the the last remote control command and it runs at the running mode set at last
time.If TIMER function is set at the last remote control command,the system after power failure will automatically cancel
TIMER. It should be reset.
5. If the system is connected with wire controller.It will run according to wire contoroller's command before power failure
and after re-energization.
3.9 Indoor Indicators
1.Communication indicator of indoor mainboard
When indoor unit communicates with outdoor unit or with
wire controller, Communication indicator flashes for once.
2. Indicators of indoor light board
Under normal operation, red indicator (running indicator), yellow indicator (heating indicator) and green indicator (cooling indicaor)
will show according to corresponding running state.Malfunction is shown priorly and many malfunctions are shown in cycle.
Note:1) Once malfunction occurs,it will be shown.
2). Malfucntion indicator flashes once every 0.5s.The show interval beween two malfucntions is 3s.
No.
Malfunction
Red indicator Yellow indicator Green indicator
(running)
Heating
Cooling
1
System high pressure protection
Flash once
2
Anti-freezing protection
Flash twice
3
System low pressure protection
Flash 3 times
4
Exhaust protection
Flash 4 times
5
Flash 5 times
6
Low pressure overcurrent protection
Communication malfunction
7
Mode conflict
Flash 7 times
8
Flash 15 times
Jumper cap malfunction
Flash once
Defrosting/heating oil return
Compressor overload protection
Flash 3 times
System abnormality (for overload
Flash 4 times
cooling,detect outdoor tube temp and
for heating ,detect indoor tube temp
Module protection
Flash 5 times
PFC protection
Flash 6 times
9
10
11
12
13
14
15
16
17
18
19
20
21
22
Flash 6 times
Compressor desynchronizing error
Flash 7 times
including degaussing error
Water-full protection
Flash 8 times
Short and open circuit of indoor
Flash once
ambient temp sensor
Short and open circuit of evaporator
Flash twice
(including outlet/inlet/mid tube temp)
Short and open circuit of outdoor
Flash 3 times
ambient temp sensor
Short and open circuit of outdoor
Flash 4 times
condenser temp sensor
Short and open circuit of exhaust
Flash
5 times
temp sensor
E2 is wrong read by reserved
Flash 11 times
outdoor unit
When this temp sensor is used,indoor ambient
Ambient temp sensor malfucntion temp sensor malfuction is shown.
of wire controller
(green indicator flashes once)
8
3.10 Turbo Function (invalid when connected with wire controller)
After setting of turbo function by remotr controller, indoor fan will run at high speed forcibly and turbo.setiing is send to outdoor
unit at the same time.
.
4. Water Pump Control and Water-full Protection
1.During cooling,dehumidifying ,startup of compressor or antifreezing protection,water pump must run at the same time.
2.During stop or stop of unit under cooling or dehumidifying or switchover to other mode, water pump will be stopped in 5 mim.
3.Under any mode water is detected to be full, water pump will start.
4.Water is detected to be full for 8s continuously when the unit is on,the unit will be protected for water full and indoor unit will
stop in 1min.
5.During water-full protection, if it is solved and water pump has worked for 10min,water pump should be stopped immediately .
but if water pump has not worked for 10min, it can't be stopped until 10min is reached.
6.After water-full protection is solved, press ON/OFF button to stop unit and then press it again to restart unit to quit protection.
7.If water-full protection signal can not be cleared within 2hr, cut off power supply of water pump.
8.If indoor unit in off state during cooling and oil return is stoped by remote controlelr,water pump won't start.Or else, water pump
will start.After oil return,the unit will be stopped once cooling temp is reached.(Corresponding expansion valve will be stopped
in 5 min.
Note:
1). With wire controller.If water full protection occurs,wire controller will always display E9 (including after protection
signal is cleared).It can't be cleared until the unit is stooped.
2) During water full protection ,the signal of turning off the outdoor door unit will be send .
Instruction to Wire Controller (Optional)
NOTE:
1. Never install the wire controller in a place where is water leakage.
2.Avoid bumping, throwing, tossing or frequently opening the wire controller.
Composition of wire controller
9
1
2
3
4
5
6
7
8
9
Timer display
Fan speed display (Auto, High, Middle,
Defrosting display
Saving state display
Set temp. display
Ambient temp. display
Fresh air display
Mode (COOL, DRY, FAN, HEAT, AUTO)
Malfunction display
10
11
12
13
14
15
16
17
18
Sleep display
MODE button
Button for temp. increase
Button for temp. decrease
FAN button
SWING button
TIME button
ON/OFF button
Display of Swing state
The Codes of Failure Definitions are as Follows:
Fault code Meaning
Wire controller
1
Compressor high pressure protection unit stop
E1
2
Indoor unit anti-freezing protection
E2
3
Low-pressure protection unit stop
E3
4
Air exhaust protection unit stop
E4
5
Over current protection unit stop
E5
6
Communication malfunction unit stop
E6
7
Unit modes conflict
E3
8
Jumper malfunction
E3
9
Defrosting /Heating oil return
10
Compressor overload protection unit stop
E5
11
System Unit malfunction
F2
12
IPM modular protection unit stop
E5
13
PFC protection unit stop
E5
14
Compressor malfunction
E9
15
Water spill protection
E9
16
Indoor ambient temp. sensor malfunction
F0
17
Indoor pipe temp. sensor malfunction
F1
18
Outdoor ambient temp. sensor malfunction
F3
19
Outdoor pipe temp. sensor malfunction
F2
20
Outdoor air exhaust temp. sensor malfunction
F4
21
E2 PROM Error
E3
22
Wire controller ambient temp. sensor malfunction
F5
10
defrost
Cassette Type Series
7 Dissassembly Procedures
Operating Procedures / Photos
1.Disassemble Front Grill Assy
Push the clasp of front grill toward middle and then
lift it to 45 degrees angle.Then remove the front grill.
Clasp
Front Panel
2.Disassemble Front Panel
Unscrew the 4 screws fixing front panel and remove
front panel to pull out each wiring terminal to take
the front panel out.
Screws
Water Tray
3.Disassemble Water Tray
Unscrew the 4 screws fixing water tray.Lift the water
tray to remove it.Pay attention to fresh air foam at
one side.
Screws
11
Operating Procedures / Photos
4.Disassemble Electric Box
Unscrew the 2 screws fixing electirc box cover plate
to remove it.
Pull out wiring terminals of motor and temp sensor
andunscrew the 2 screws fixing electirc box cover
to remove it.
Screws
Electirc box cover
Screws
Electirc box
5.Disassemble Outlet Pipe Plate
Outlet pipe plate
Unscrew the 2 screws fixing outlet pipe plate and
turn it upwards to remove it.
Screws
6.Disassemble Water Pump
Unscrew the 2 screws fixing water pump mounting
rack to pull out drainage pipe of water pump so that
water pump and its mounting rack can be removed
together.
Unscrew the 2 screws fixing water pump drainage
pipe to take drainage pipe out.
Water
pump
Screws
12
Cassette Type Series
Operating Procedures / Photos
Drainage Pipe
Screws
Left baffle plate
7.Disassemble Left Baffle Plate
Unscrew the 2 screws fixing left baffle plate and
lift the plate to remove it.
Screws
Centrifugal fan
8.Disassemble Centrifugal Fan
Unscrew the nut fixing centrifugal fan and lift it
to remove it.
Nut
13
Operating Procedures / Photos
Evaporator connecting board
9.Disassemble Evaporator
Unscrew the screws fixing connecting board and
fixed mount of evaporator to remove them and then
remove evaporator.
Evaporator
Evaporator fixed mount
Motor
10.Disassemble Motor
Unscrew the 4 screws fixing fan to remove it.
Screws
14
Cassette Type Series
8 Explosive view and spare parts list
Exploded View and Parts List of Front Panel
15
No
Part Code
T07
22242716
Description
Qty
1
Inner Conner Cover I
2
/
3
Connecting Wire (8 Core)
4
Right NetHook
5
Air Guider
10512702
4
6
Left NetHook
26252705
1
7
Clamp
26252704
2
8
Air Outlet Foam I
12312704
4
9
Front Panel
20002704
1
10
Receiver PCB KJ
30261001
1
11
Receiving Window
22432705
1
12
Air Outlet Foam II
12312705
4
13
Connecting Lever
10582704
2
14
Gimbal
10562704
4
15
Universal Joint
10562703
8
16
Filter
11122703
1
17
Air Inlet Grille
22412704
1
18
Inner Conner Cover I
22242715
2
19
Small Gear
73012701
2
20
Large Gear
73012702
2
21
Synchronous Motor MP35EA
15210104
2
/
The above data are subject to be changed without notice.
16
2
/
400300791
1
26252705
1
Cassette Type Series
Exploded View of Components and Parts
17
No
Description
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
Remote Controller Y512
Water Tray
Water Tray Foam for Fresh Air Intaking
Water Tray Foam
Fan Fixer
Centifugal Fan
Motor FN11T
Evap Support
Evaporator Assy
Motor Support
Motor Gasket
Water Tray support
Front Side Plate
Body Fixer
Right Side Plate
Tube-exit plate
Cable-cross Loop
Wire Clamp
Electric Box Assy
Terminal Board RS9413
Transformer 57X35E
Capacitor
Main PCB M901F2J
Electric Box Cover
Base Plate
Cord Baffle Plate
Connecting Wire
Connecting Cable
Tube Sensor
Tube Sensor
Tube Sensor
Sensor Insert B
Left Baffle Plate
Evap Connection
Water Level Switch Support
Right Baffle Plate
Water Level Switch
Pump Gasket 1
Pump Gasket 2
Pump Drainage
Pump Support
Water Pump PSB-7
Room Sensor
Wire Clamp
Part Code
FC-C12AI
30512520
20182703
12312702
12312703
76712709
10312702
15012707
01072714
01002921
01702702
76712705
01332706
01302741
01332705
01302743
01382719
76515202
71010003
01402705
420111041
43110013
33010020
30039370
01412723
01222712
01362701
40030079
400204056
390001981
390001982
390001983
42020063
01362703
01072713
24212705
01362702
450127012
76712707
76712708
05232722
01332707
43130320
3900019813
71010105
The above data are subject to be changed without notice.
18
FC-C18AI
30512520
20182703
12312702
12312703
76712709
10312702
15012707
01072714
01002921
01702702
76712705
01332706
01302741
01332705
01302743
01382719
76515202
71010003
01402705
420111041
43110013
33010026
30039370
01412723
01222712
01362701
40030079
400204056
390001981
390001982
390001983
42020063
01362703
01072713
24212705
01362702
450127012
76712707
76712708
05232722
01332707
43130320
3900019813
71010105
Qty
1
1
1
1
1
1
1
1
1
1
3
4
2
4
2
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
3
1
1
1
1
1
1
1
1
1
1
1
1
">
