Sinclair FC-C12AI, FC-C18AI User Manual

USER'S MANUAL

FC-C12AI, FC-C18AI

FREE COMBI S

ERIES

CASSETTE UNITS

CONTENTS

Thank you for purchasing this air conditioner.Please read this MANUAL carefully before using this unit and then
keep it properly for future reference.

CONTENTS

1

2

4

13

14

21

18

22

24

34

Operation procedureInstallation

Names and functions of parts

Safety cautions

Remote control operation procedure

Optimum operation

Trouble shooting

Installation notes

Care and maintenance

Installation accessories and drawings

Indoor unit installation

Test and check items after installation

Names and functions of parts

Indoor unit

1

Names and functions of parts

Safety cautions

Read the following instructions carefully before use.

Avoid direct air flow to your body and avoid
excessive heating or cooling that may makes
you feel uncomfortable and do harm to your
health.

Do not remove protection grill nets from the
outdoor unit.
Do not put hands or insert anything into the

air outlet vent of the unit.

If there is something abnormal (eg.burning
smell), cut off the power immeditely and con­tact service center.

If room air is stuffy, air the room by opening
door and window for a while, but please close
the curtains when operating the unit to prevent
conditioned air from leaking.

Check whether the installed stand is still firm
enough after the unit has operated for a long
time.
If a worn-out stand is left unfixed,the unit may
topple and do harm to others.

Do not stand on the outdoor
unit or put anything on it, or
you may fall down or people
may get hurt by the falling
things.

Do not spray any paint or
pesticide on the unit, or it
may cause fire.

Never use wrong ampere rating fire.
Use of iron wire or copper wire may
cause the unit to break down or
cause fire.

Warning

Safety cautions

2

Safety cautions

Do not check or repair during the unit is
operating. It is very dangerous.

Never place objects near the air intake and the air outlet of the unit.
It may affect performance or stop operation of the unit.

Do not splash water directly to indoor unit
It may cause trouble or electric shock.

Do not use other
heating equip­ment near the air
conditioner.
It will affect the
cooling perfor­mance.

Do not throw the remote controller and do not
press the button of the remote controller with
pointed object, or the remote controller may
be damaged.

Warning

Safety cautions

3

Remote control operation procedure

Name and Function-Remote control

SWING button

When it is pressed, the louvers
start to rotate automatically and
stop when repressed.

TEMP.button
SET TEMP. increases 1

by
pressing button once,and decreases
1

by pressing button once.
At COOL mode operation, SET
TEMP. can be selected from 16

to

30

.
At DRY mode operation, SET TEMP.
can be selected from 16

to 30 .
At HEAT mode operation, SET
TEMP. can be selected from 16

to

30

.

MODE button
press this button to change the
operation mode in order of:

Note:

Cooling only type have no
“ ” mode.

FAN button

Press this button to
change the fan speed of:

“ ” COOL mode
“ ” DRY mode
“ ” FAN mode
“ ” HEAT mode

ON/OFF button
Press this button to turn on
or turn off the unit.

Note:

Be sure that there are no obs tructions.
Don’t drop or throw the remote controller.
Don’t place the remote controller directly in the sunlight.

Remote control operation procedure

4

AUTO

ＯＮ／ＯＦＦ

Liquid crystal displayer. It
shows all set contents.

SL EEP button
Press thi s button to set
SLEEP operatio n.

TIMER OFF button
At operating, press TIMER
OFF button, set OFF TIME
in range of 0 to 24 hour to
stop the unit automatically.

TIMER ON button
A t stopping, press TIM ER
ON button, set ON TIME in
range o f 0 to 24 hour to start
the unit automatically.

Name and F unction-R emote control. (R emove the cover )

Note: This type of r emote controller is a kind of new curr ent one. Some buttons of it that

are not available to this air conditioner will not be introduced below.

ＯＮ／ＯＦＦ

5

Remote control operation procedure

Remote control operation procedure

C O O L mode operation procedure

4.Press FAN button, set
fan speed.

5.Press T EM P. but­ton, set suitable
TEMP.

2.Press MODE bu t t on,
set operation
mode.

3.Press SWING button,
the louver s start to ro­tate automaticall y, and
stop when repress.

1.Plug in , pre s s ＯＮ／ＯＦＦ　b utt on,

th en air

conditioner is turned on.

According to differe nc e betwe en ro om temp. and set temp ., microco mputer can contro l coo ling

on o r not.
If room temp. is higher than set temp., compressor runs at COOL mode.
If room temp. is lower than set temp., compressor stops and only indoor fan mo tor runs.
Set TEMP. should be in range of 16 to 30

ＯＮ／ＯＦＦ

Remote control operation procedure

6

Remote control operation procedure

HEAT mode operation procedure

If room temp. is lower than set temp., compressor runs at HEAT mode.

If room te mp. is hig her than set te mp ., comp res so r and o utdo or fan motor sto p, only indoor fan

moto r runs.
Set TEMP. should be in range of 16 to 30

4.Press F AN button, set
fan speed.

5.Press T EMP. but­ton, set suitabl e
TEMP.

1.Plug in , pre s s ＯＮ／ＯＦＦ　but ton ,

th en air

conditioner is turned on.

2.Press MODE bu t t on,
set operation
mode.

3.Press SWING bu t t o n , the
louvers start to rotate
automatically, and stop
when repress it.

ＯＮ／ＯＦＦ

7

Remote control operation procedure

Remote control operation procedure

DRY mode operation procedure

If room temp. is lower than set temp., compressor ,outdoor fan motors stop,indoor fan motors
run

at low speed.

If room

temp. is be twee n

2 of set temp., Air co nditione r is drying.If roo m

temp . is

higher than set

temp., it’s at COOL mode.

Set TE MP. should be in range of 16 to 30

3.Press SWING button,
the louver s start to ro­tate automaticall y, and
stop when repress it.

4.Press TE MP.button,set

suitable TE MP.

2.Press MODE button ,se t
operation mode.

1.Plug in,press ＯＮ／ＯＦＦ　button,
then air

conditioner is turned on.

ＯＮ／ＯＦＦ

Remote control operation procedure

8

Remote control operation procedure

AUTO mode operation procedure

At AUT O mode operation, standard TEMP. i s 25 f or COOL mode and 20 f or HEA T

mode.

2.Accordin g to roo m t e m p .,micro­computer can a uto matically set

operation

mode,so as for best effect.

1.Plug in ,Press ＯＮ／ＯＦＦ　b utton,　

then

air conditioner is turned o n.

ＯＮ／ＯＦＦ

9

Remote control operation procedure

Remote control operation procedure

TIMER mode operation procedure

At st o ppin g,p ress T IME R
ON but ton , set ON T IME
in range of 0 to 24 hour to
sta rt th e un it au t o m at ically.

At operating,press TIMER
OFF bu t ton .set OFF TI ME
in range of 0 to 24 hour to
stop the unit automatically.

ＯＮ／ＯＦＦ

Remote control operation procedure

10

Remote control operation procedure

SLEEP mode operation procedure

4.Press FAN button, set
fan speed.

5.Press T EM P. but­ton, set suitabl e
TEMP.

1.Plug in , pre s s ＯＮ／ＯＦＦ button,

th en air

conditioner is turned on.

2.Press MODE button,
set o r op­eration mode.

3.Press SWING button,
th e louve rs st art to rot a t e
automatically, and stop
when repress.

6.SLEEP button

Press it to se t SLEEP

operati on.

When the unit is cooling or drying, if SL EEP operation is set, TEMP. would increase 1 in 1

hour and 2

in 2 hours. Indo o r fan moto r runs at lo w spe e d.

When the unit is heating , if SLEEP o peration is set, T EMP. would decre ase 1 in 1 hour and

2 in 2 hours.

ＯＮ／ＯＦＦ

11

Remote control operation procedure

Remote control operation procedure

How to insert batteries

1. Remove the cover from the back
of the remote control.

2. Insert the two batteries ( Two AAA
dry - cell batteries ) and press ACL.

3. Re - attach the cover.

Note:

Don’t confuse the new and

worn or different types of
batteries.

Remove batteries when the

remote control is not in use

for a longtime.

1 Remove the cover
3 Re - attach the cover.

2 Insert the AAA dry - cell batteries.

Remote control operation procedure

Remote control operation procedure

12

Optimum operation

13

Optimum operation

Adjust the room temperature properly for a comfortable
environment.

Adjust the room temperature properly

Water may drop from the indoor unit when the humidity
is over 80% or when the drainage outlet is clogged.

Never place anything under the indoor unit that is to be kept dry.

When the main power switch is truned on, some watts of
electricity is being used even if the system is not operating.
Turn off the main power supply switch to save energy.

Turn off the main power supply swittch when it is not to be used for long periods of time

Cooling and heating performance will be affected if the
doors and windows are open for a long time.

Do not open the doors and windows for a long time when air conditioner is operating

It may cause interference in the picture or sound.

Place TV, radio, stereo, etc. at least 1m away from the indoor unit and the remote controller.

It may do harm to them.

Avoid direct air flow to pets and plants.

Trouble shooting

Warning

*

In case of something abnormal (such as bad smell), shut off the power switch immediately and contact service center.

*

Do not repair the air conditioner by yourself. Because wrong repair may cause fire, please contact service center.

Check these items shown below before contacting service center.

Pause off or fuse broken

Power off

Loose plug

Batteries of remote controller fall

Out of the remote controlling range

Object at the air intake and

air outlet of the air conditioner

Object at the air intake and

air outlet of indoor and out door units

Wrong temperature setting

Low fan speed

Air direction is not correct

Doors or windows are open

Direct sunshine

Too many people in the room

Too many heating sources

Dirty air filter

Phenomenon

Change fause or replace fuse

It will restart when power is on

Put the plug into place

Replace batteries

Keep distance in 8m or less

Remove them

Remove them

Refer to p6

Refer to p6

Refer to p6

Close them

Close the curtain or blinber

Clean it

Cause Corrective Measures

Note:

If trouble still exists after checking the about items,please contact service center.

The system does not

operate at all

The system stops right

after it is started

Cooling and heating is

melfunctioning

Trouble shooting

14

*

the appliance should not be used by children without supervision.

The following are not troubles

Trouble shooting

Restart right after stopping

Press SET TEMP. and then release immediately.

Power is switched on

When cooling

after the unit is stopped

Buzz is heard at starting

Sound of running water can be heard

during operation

A “shuh” sound which is heard at the start

or immediately after the stop of operation

or which is heard at the start or immediately

after the stop of defrosting operation.

A continuous low “shah” sound is heard

when the system is in cooling operation or

at a stop.

Cracking noise can be heard during or after

operation.

Starting operation after not using for a long

time.

During operation

“Trouble” Cause

The unit does not

operate when

Mist is emitted

Outdoor unit is hot

Noise

Dust from the units

Wind from the outlet

smells

Once the unit is stopped, it will not operate

for about 3 minutes to protect it

Wati for 1 minute

Room air is chilled rapidly and becomes

foggy.

Compressor is emitting heat to get ready

for restarting.

It’s the starting sound of thermostat and

will turn low after 1 minute.

This is caused by the refrigerant flowing

inside the unit

This is the noise of refrigerant caused by

flow stop and flow change.

The noise is heard when the drainage pump

is in operation.

This is caused by the panel expanding or

contracting due to the change in

temperature.

Dust absorbed by the unit blows out

This is caused by the odors in the room

which have gotten onto the air conditioner

Trouble shooting

15

FAULT INDICATION

Trouble shooting

NO.

Meaning

LED

（red）

LED

（yellow）

LED

（green）

1

protection unit stop

Compressor high pressure

Blink once

2

Indoor unit anti-freezing
protection

Twice times

3

Low-pressure protection
unit stop

Three times

4

Air exhaust protection unit stop

Four times

5

Over current protection unit
stop

stop

stop

Five times

6

Communication malfunction unit

Six times

7 Unit modes conflict

Seven times

8 Jumper malfunction

Fifteen times

9 Defrosting/Heating oil return

Blink once

10

Compressor overload protection
unit stop

Three times

11

System Unit malfunction

12

IPM modular protection unit

13 PFC protection unit stop

14 Compressor malfunction

15 Water spill protection

16

Ｉndoor ambient temp. sensor
malfunction

malfunction

malfunction

malfunction

malfunction

17

Ｉndoor pipe temp. sensor

18

Outdoor ambient temp. sensor

19

Outdoor pipe temp. sensor

20

Outdoor air exhaust temp.sensor

21 E2 PROM Error

Eleven times

22

Wire controller ambient temp.
sensor malfunction

Blink once

Four times

Five times

Six times

Seven times

Eight times

Blink once

Twice times

Three times

Four times

Five times

Trouble shooting

16

When the unit is running operated by wire controller.

Trouble shooting

Trouble shooting

17

The Codes of Failure Definitions are as Follows:

NO.

Meaning

Compressor high pressure protection unit stop

Indoor unit anti-freezing protection

Low-pressure protection unit stop

Air exhaust protection unit stop

Over current protection unit stop

Communication malfunction unit stop

Unit modes conflict

Jumper malfunction

Defrosting /Heating oil return

Compressor overload protection unit stop

System Unit malfunction

IPM modular protection unit stop

PFC protection unit stop

Compressor malfunction

Indoor pipe temp. sensor malfunction

Outdoor ambient temp. sensor malfunction

Outdoor pipe temp. sensor malfunction

Outdoor air exhaust temp. sensor malfunction

E2 PROM Error

Wire controller ambient temp. sensor malfunction

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

E1

E2

E3

E4

E5

E6

E3

E3

defrost

E5

F2

E5

E5

E9

E9

F0

F1

F3

F2

F4

E3

F5

Water spill protection

Indoor ambient temp. sensor malfunction

Fault code

Care and maintenance

Pull out the power plug before cleaning Do not splash water directly to the unit

Warning

Please pull out the power plug after you used the air conditioner.

1.Open the suction grille
Use screwdriver screws the two screws.
Slide both knobs simultaneously as shown and
then pull them downward slowly.

How to clean the air filter

2.Remove the air filters.
Slide knobs on the back of the suction grille
outward and remove the air filter.
Then romove three air cleaners on it.

3.Clean the air filter
Use vacuum or wash the air filter with water when
the air filter is very dirty,use neutral deter gent and
water.Let the filter dry naturally at shady place.

Note:
Do not clean with hot water
Do not dry over fire
Do not run the air conditioner without the air filter.

Care and maintenance

18

The suction grille must be opened by skilled personnel.

Care and maintenance

19

Care and maintenance

4.Fix the air filters
Replace the air filter into its holder.
Make sure that the air filter makes contact with the

filter stopper when it is replaced into its holder.

Shut the suction grille.

Refer to step 1.

1.Open the suection grille.

How to clean the suction grille

3.Remove the suction grille
Open the suction grille at 45

and then lift.

4.Wash with water.
When the suction grille is very dirty,use soft
brush and neutral detergent.Shake off water and
dry in a shady place.
Notes:Do not wash with hot water.

2.Remove the air filters.

5.Fix the suction grille

6.Fix the air filter.

7.Close the suction grille

See step 1 of “How to clean the air filter”

Refer to step 3.

See step 4 of “How to clean the air filter”

Refer to step 1.

See step 2 of “How to clean the air filter”

Care and maintenance

Before starting the air conditioner for the first time in the season

1.Check to make sure no objects obstructing the intake
and outlets parts on both the indoor and outdoor units.

2.Check to make sure ground wire is connected and
that it is not damaged.

3.Check to make sure air filter has been cleaned.

4.Turn on the power 6 hours before starting the air
conditioner.

End of seaseon cleaning

1.Clean the filter and the body of the unit.

2.Turn off power.

3.Clear outdoor unit of dust.

4.If there is any rust in the outdoor unit, this should be
painted over to prevent the rust from spreading.

Care and maintenance

20

Power supply and wiring requirement

1. Power frequency of air-conditioner should be 50Hz, voltage:
AC 220-240V.
If voltage are over may cause the parts of electric equipment damaged. If the voltage are too low may cause shake

on compressor, it may let the cooling system damaged, and also, the compressor and parts will not work. Voltage
should be stable, which cannot have a big fluctuation.

2. User power supply should be provided a reliable earthing connect. (see earth requirement)

1. Should have a reliable earth connection (see earth connection requirement)

2. Screw of wire should be tight, damaged screw should be changed. Self-tapping screw cannot use on electric
connection.)

3. Wire should be used by the provided one. Please do not change the wire, length and the end of it. If you need to
adjust, please contact with the local service center.

4. Please do not connect the plug with the non-plug wire by yourself.

5. Indoor and outdoor electrical connecting wire should not affect by elasticity and twist.

Electric connection requirement

Installation notes

Location Noise

The air conditioner must be f irmly installed and 3 4

liability checks must be done every year.
Avoid place whthin easy r each of young children.
Avoid other heat sources or direct sun li ght.

Install indoor unit away from TV set or radio.
Avoid where inflammable gas is likely to leak.
At salty coastal areas o r special are a s su ch as th e vicinity

of a sulphurous hot spring,please contact dealer before

installation to make sure it is safe to use the unit.
Not to be installed in laundries.
The air conditioner must be positioned so trat the plug

is accessible.

S elect a place wi th good ventil ation or i t may affect

performance or increase noise.

I nstal l the air conditioner on a foundation that can

withstand its weight.insufficient strength may result in
the fall of equipment and cause injury.

Select a place so as not to annoy neighbor with the hot

air or noise.

Ne ver place obje cts near the air outle t or the unit,it m ay

affect performance or increase noise.

If there is abnormal noise during the operating,contact

dealer immediat ely.

Installation and transportation Wiring arrangement

Installation and tran s portation o f the un it must be done

by skilled personnel.
Be sure to use onl y the specified accessories and parts

for in s tallation,failure to use may le ad to e le ctric shock,

leakage or fire.
Carry out inst a llation with con sid e ra t ion of stro n g wind s,

typ h o on s,or e art h q u ake s.Improp e r insta llation work ma y

result in accidents due to fall of equipment.
If the uni t is to be moved to other place,please consult

dealer first.

Make sur e wi r ing is carried out by qualified personnel

acco rding to laws and regulations and t his manual,using

a separate circuit and suitable fuse.
Be sure to in s tall an e arth lea kage breaker.
Diam eter of power supply cord mu s t be big e nou gh.

(Re fer t o P24 about the sizes of diam ete r)

If t he supply co rd is da maged, it m u s t be rep laced b y th e

ma nufact urer or it s se rvice ag ent or a similarly qualified

person in order to avoid a hazard.
The appli ance shal l be install ed i n accordance with

relat ive wiring regulat ion s.

1. Air-conditioner is the class I appliance, it must be use the suitable earthing connection.

2. Please do not cut or change the method of use of the yellow / green earthing wire of the
air-conditioner. Otherwise, it may cause the electrical leakage.

3. Earth ing resistance should be a pproved by Count ry Standard GB17790.

4. User power should be provided a reliable e a rthing t erminal. Plea se do n o t let the e arthin g
wire to connect the following place:

1. Water supply

2. Gas supply

3. Sewage tube

4. Some places there are not reliable by a professional.

Earthing requirement

Water pipe

Some parts of the water pipe are made of plasti c
materials and not suitable for earthing.

Gas pipe

I f there i s electri cal l eak age accidently f rom air
conditioner,it is easy to cause fire or explosion.

Installation notes

21

Installation accessories and drawings

Accessories

Installation accessories and drawings

22

Quantity

1

1

4

10

1

4

2

1

1

2

1

2

8

1

2

L=200

10

ST4.8

13-F

5

160 300

5

45 300

3

30 150

120

65 25

ST4.2

9.5PA

AAA 1.5V

No.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

Name

Drainage hose

Clamp

Nylon fastener

Washer

Paper pad for installaition

Screws

Heat preservation Sponge for pipe

Big sealing pad

Sealing pad

Small sealing pad

Sealing bar

PVC tape

Screws

Remote controller

Battery

Notes

For indoor side pipe joint

For hole

Encase the tie-in

For remote control

Shape

For mounting the remote

control unit

Use for Paper pad for

installation

Power control wire

16 1

Installation drawings

Installation drawings

Indoor unit

Note:

Air conditioner must be installed by skilled personnel according to this manual.

Installation drawings

23

Fig.1

Location

1.Do not place object near the air oulet so that conditioned air can reach the whole room.

2.Be sure to install the indoor unit firmly and horizontly.

3.Select the place that can support 4 times of the indoor unit’s weight and will not increase noise and vibration.

4.Select a place easy to drain water and connect with the outdoor unit.

5.Make sure there is enough space for maintenance and make sure the distance between the unit and ground is 1.8m
or more.

6.Make sure the suspension bolt pitch can hold 4 times of the indoor units’s weight,otherwise,you should strengthen
the suspension bolt pitch.

Indoor unit installation

Note:

1.Keep enough distance from the kitchen.

2.The appliance shall not installed in the lundary.

Hanging preparations

Firmly fasten the hanging bolts as shown in Fig.4 or by another method.

Ceiling opening and suspension bolt (M10) pitch demension.

Indoor unit installation

24

Fig.2

Fig.3

Indoor unit installation

Hanging preparations

(1) Install special nut A, then special nut B onto the hanging bolt. (Fig.6)
(2) Raise the body and mount its hooks onto the hanging bolt between the special nuts. (Fig.6)
(3) Turn special nut B to adjust the height of the body. (Fig.6)
(4) Leveling a level, or vinyl hose filled with water, fine adjust so that the body is level.

Indoor unit installation

25

Fig.5

Warning

Perform final tightening by tightening the double nut firmly.

Fig.6

Indoor unit installation

Fig.7

Installing drain pipe

NOTE: Install the drain pipe.

Install be drain pipe with downward gradient (1/50 to 1/100) and so there are no rises or traps in the pipe.
Use general hard polyvinyl chloride pipe (VP25) [outside diameter 1-1/4” (32mm)] and connect it with adhesive
(polyvinyl chloride) so that there is no leakage.
When the pipe is long, install supporters.
Always heat insulate the indoor side of the drain pipe.
When desiring a high drain pipe height, raise it up to 15” (400 mm) or less from the ceiling within a range of 6”
(150mm) from the body. Arise dimension over this range will cause leakage.

Fig.8

Indoor unit installation

26

Vinyt hose

Indoor unit installation

Connecting the pipes

Besure to use both a spanner and wrench together as shown in the drawing during connecting or disconnecting pipes
to/from the unit.
The pipe of water-in/out is pipe thread G3/4.The surface of thread should be enlaced by the two or three-circles trap.
After the water-in pipe and water-out pipe is connecting tightly,starting the water pump,then checking it’s airproof
performance.
Insulate it as shown in the drawing below.
Use sealing pad (10) to wrap the water-in/out pipe and the insulation (8).

Indoor unit installation

27

Fig.9

Fig.10

Socket wrench

Torque wrench

Medium sponge

(wrap the joint with the sealing pad)

Wire clamp (X4)

Insulation for fitting

(attached

)

Water-in pipe

Water-out pipe

Indoor unit installation

Electrical wiring

How to connect wiring to the terminals

A. For solid core wiring (or F-cable)

(1) Cut the wire end with a wire cutter or wire-cutting pliers, then stuip the insulation to about 15/16” (25mm) of expose

the solid wire.
(2) Using a screwdriver,remove the terminal screw (s) on the terminal board.
(3) Using pliers, bend the solid wire to form a loop suitable for the terminal screw.
(4) Shape the loop wire properly, place it on the terminal board and tighten securely with the terminal screw using a

screw driver.

B. For strand wiring

(1) Cut the wire end with a wire cutter or wire-cutting pliers, then strip the insulation to about 3/8” (10mm) of expose

the solid wire.
(2) Using a screwdriver, remove the terminal screw (s) on the terminal board.
(3) Using a round terminal fastener or pliers, securely clamp a round terminal to each stripped wire end.
(4) Position the round terminal wire, and replace and tighten the terminal screw using a screwdriver.

C. Attention:

An all-pole disconnection switch having a contact separation of at least 3mm in all poles should be connected in
fixed wiring.

Fig.11

A. Solid wire

B. Strand wire

Strip 15/16” (25 mm)

Insulation

Loop

Strip 3/8” (10 mm)

Round
terminal

Screw with
special washer

Screw with
special washer

Wire

Round
terminal

Terminal
board

Round
terminal

Wire

Indoor unit installation

28

Indoor unit installation

Indoor unit side

Remove the control box cover and install the connection cord. (Fig. 12 and 13)

Indoor unit installation

29

Fig.12

Fig.13

Control box cover

Blue

Black

4-core rubber cable

(to outdoor unit)

Note

* The temperature of refrigerant circuit will be high, please keep the

interconnection cable away from the copper tube.

* An all-pole disconnection device which has at least 3mm separation

distance in all pole and a residual current device(RCD)with the rating

of above 10mA shall be incorporated in the fixed wiring according to

Circuit Diagram

the national rule.

FC-C12AI

Brown

Yellow/Green

FC-C18AI

N(1) 2 3

Indoor unit installation

Bolting the grille assembly to the body

Install the grille assembly to the body with the four bolts,spring washers,and washers.

Wireless unit connection wire wiring

(1). Connect the connector in accorbance part A detail view.
(2). Then clamp the lead wire with clamp so that it does not touch the rotating parts.

Fig.14

Fig.15

Washer

Spring washer

Bolt

No gap between ceiling and
grille around entire periphery.

Indoor unit installation

30

Indoor unit installation

Indoor unit installation

31

Fig.16 Part A detail view

Installing/Removing the intake grille

1. Installing the intake grille

(1) Full insert the intake grille hooks into the rectangular holes in the panel.

Fig.17

(2) Close the intake grille,then slide the tow grille stoppers outward.

Fig.18

Indoor unit installation

2.Removing the intake grille

(1) Slide the two grille stoppers inward,and then open the iotake grill.

Fig.19

Grille stopper

(2) Remove the geille hook screws, and then open the intake grille.

Fig.20

(3) Open the intake grille so that it is at an angle of 20° to 40° ,and then remove the grille.

Fig.21

Caution:

(1)the louver angle cannot be changed if the power is not no, (It moved by hand,ir may be damaged.)
(2) The grille assembly is directional relative to the air conditioner body.
(3) Install so that there is no gap between the grille assembly and the air conditioner body.

Grille hook

Indoor unit installation

32

Connection of refrigerant pipe

Besure to use both a spanner and torque wrench together as shown in the drawing,connecting or disconnecting pipes

to/from the unit.
Refer to table 1 to determine the proper tightening torque (over tightening may damage the flare and cause leaks.)
When conecting the flare nut,coat the flare both inside and outside with refrigerating machine oil and initially

tighten by hand 3 or 4 turns.
Check the pipe connector for gas leaks,then insulate it as shown in the drawing below.
Use sealing pad (11) to wrap joint between gas pipe and the insulation(8).

Indoor unit installation

The enclosure of the appliance shall be marked by word, or by symbols, with the direction of the fluid flow.

Fig.22

33

(N·m)

Ф6
Ф 9.52
Ф 12

３０～４０

15～20

50～55

Pipe gauge

Tightening torque

Tightening torque table:

Test and check items after installation

Test operation

1. Prepare for test
(1) Do not turn on the power switch before all installation is finsihed.
(2) Connect wires corectly and firmly.
(3) Open the check valve.
(4) Remove all dust.

2. T esting
(1) Turn on the power switch and press “ON/OFF” button.
(2) Press “MODE” button to select COOL,HEAT,FAN,etc to test whether it
operates mormally.

3.Emergency operation.
When the batteries fail or when the remote controller is missing,operate as
shown below.

*

When stop, you can press the “AUTO” button on cover NO.

then unitl is in “AUTO” mode.

The air conditioner selects COOL,HEAT,DRY,FAN
modes automatically.

*

When operating,press the “AUTO” button,the air conditioner will stop.

Note to the installer

Be sure to instruct the customer how to operate the system and show him/her the attached operation manual.

Items to check

Is the indoor unit fixed firmly?
Is the gas leak test finished?
Is the unit fully insulated?
Does drainage flow smoothly?
Does the power supply voltage correspond to
that shown on the nameplate

Are wiring and piping correct?

Is the unit safely grounded?

Is wiring size according to specifications?

Is something blocking the air outlet or intake
of either the indoor or outdoor units?
Have records of refrigerant piping length and
additional refrigerant charge been made?

If not properly done,what is likely to happen

The unit may drop,vibrate or make noise.
It may result in insufficient cooling.
Condensate water may drip.
Condensate water may drip.
The unit may malfunction or the components burn
out.
The unit may malfunction or the components burn
out.
Risk of electric leakage.
The unit may malfunction or the components burn
out.

It may result insufficient cooling.

Volume of refrigerant charge in the system is not
clear.

Check

Note

The “TEST” button on the cover No. is specially for testing the air conditioner.
When pressing it,the air conditioner will be forced to operate or stop.Do not press
it when air conditioner is in normal operation.

For the following items,take special care during construction and check after installation is finished.

Test and check items after installation

34