Carrier 42/38KCJ024713 Operating manual

Model:
42/38KCJ024713
42/38QCJ024713
42/38KCJ036813
42/38QCJ036813
42/38KCJ048813
42/38QCJ048813
Free Stand Air Conditioner

Content
CONTENT
1Safety Precautions......................................................................................... 1
1.1 Precaution ........................................................................................................................ 1
1.2 Installation ....................................................................................................................... 1
1.3 Caution.............................................................................................................................. 1
1.4 Operational....................................................................................................................... 1
2Out Dimensions.............................................................................................. 3
2.1 Indoor Unit........................................................................................................................ 3
2.2 Outdoor Unit..................................................................................................................... 3
3External view and display ............................................................................. 4
3.1 External view.................................................................................................................... 4
3.2 Display panel ................................................................................................................... 5
4Refrigerant cycle diagram ............................................................................ 6
4.1 Cooling only...................................................................................................................... 6
4.2 Heat pump model ........................................................................................................... 6
5PCB drawing & wiring diagram.................................................................... 7
6Installation detail .........................................................................................13
6.1 Installation place...........................................................................................................13
6.2 Installing .........................................................................................................................14
6.3 Refrigerant pipe connecting ........................................................................................16
6.4 Drain Pipe of The Indoor Unit ......................................................................................18
6.5 Wiring..............................................................................................................................19
6.6 Test operation ................................................................................................................19
7Electronic function .......................................................................................20
7.1 Performance Index........................................................................................................20
7.2 Main data Introduction.................................................................................................20
7.3 Operation Modes and Functions .................................................................................20
7.4 Other Functions .............................................................................................................22
8Trouble shooting...........................................................................................22
8.1 Protective Function .......................................................................................................22
8.2 Self-diagnosis.................................................................................................................23
8.3 Troubles and Solutions .................................................................................................24

Safety Precautions
1
1Safety Precautions
1.1 Precaution
To prevent injury to the user or other people and property damage, the following
instructions must be followed.
Incorrect operation due to ignoring instruction will cause harm or damage.
Before service unit, be sure to read this service manual at first.
1.2 Installation
For electrical work, contact the dealer, seller, a qualified electrician, or an Authorized
service center.
Do not disassemble or repair the product by yourself.
Sharp edges could cause injury, be especially careful of the case edges and the fins on
the condenser and evaporator.
Be sure the installation area does not deteriorate with age.
Take care to ensure that power cable could not be pulled out or damaged during
operation.
Do not place anything on the power cable.
Do not plug or unplug the power supply plug during operation.
Do not store or use flammable gas or combustible near the product.
When flammable gas leaks, turn off the gas and open a window for ventilation before
turn the product on.
If strange sounds, or small or smoke comes from product. Turn the breaker off or
disconnect the power supply cable as soon as possible.
When the product is soaked (flooded or submerged), contact an Authorized service
center.
Be caution that water could not enter the product.
Turn the main power off when cleaning or maintaining the product.
When the product is not be used for a long time, disconnect the power supply plug or
turn off the breaker.
1.3 Caution
Always check for gas (refrigerant) leakage after installation or repair of product.
Install the drain hose to ensure that water is drained away properly.
Keep level even when installing the product.
Do not install the product where the noise or hot air from the outdoor unit could damage
the neighborhoods.
Use two or more people to lift and transport the product.
Do not install the product where it will be exposed to sea wind (salt spray) directly.
1.4 Operational
Do not expose the skin directly to cool air for long periods of time. (Do not sit in the

Safety Precautions
2
draft).
Do not use the product for special purposes, such as preserving foods, works of art, etc.
It is a consumer air conditioner, not a precision refrigerant system.
Do not block the inlet or outlet of air flow.
Use a soft cloth to clean. Do not use harsh detergents, solvents, etc.
Do not touch the metal parts of the product when removing the air filter. They are very
sharp.
Do not step on pr put anything on the product. (outdoor units)
Always insert the filter securely. Clean the filter every two weeks or more often if
necessary.
Do not insert hands or other object through air inlet or outlet while the product is
operated.
Do not drink the water drained from the product.
Use a firm stool or ladder when cleaning or maintaining the product.
Replace the all batteries in the remote control with new ones of the same type. Do not
mix old and mew batteries or different types of batteries.
Do not recharge or disassemble the batteries. Do not dispose of batteries in a fire.
If the liquid from the batteries gets onto your skin or clothes, wash it well with clean
water. Do not use the remote of the batteries have leaked.

External view and display
3
2Out Dimensions
2.1 Indoor Unit
Width
(mm)
Height
(mm)
Depth
(mm)
24K
500
1700
290
36K
540
1825
410
48K
540
1825
410
2.2 Outdoor Unit
Width
(mm)
Height
(mm)
Depth
(mm)
A
(mm)
B
(mm)
24K
840
695
335
560
335
36K
895
860
330
590
333
48K
990
965
355
623
366

External view and display
4
3External view and display
3.1 External view
1
2
3
4
5
6
78
11
10
9
Outdoorunit
1Air outlet
2Operationpanel
3Horizontal airflowcontrol louver
4Vertical airflowcontrol louver
5Remote controller holder(on some models)
6Air inlet(2 sides)
7Drain pipe, vent pipe
8Connection cable
9Connection pipe
10 Refrigerant pipe port
11 Air outlet
Indoor unit
Note: All the pictures in this manual are for explanation purpose only. They may be
slightly different from the air conditioner you purchased(depend on model). The actual
shape shall prevail.

External view and display
5
3.2 Display panel

Refrigerant cycle diagram
6
4Refrigerant cycle diagram
4.1 Cooling only
4.2 Heat pump model

PCB drawing & Wiring diagram
7
5PCB drawing & wiring diagram
5.1 42/38KCJ024713
Indoor unit
Outdoor unit
5.2 42/38QCJ024713
Indoor unit

PCB drawing & Wiring diagram
8
Outdoor unit
5.3 42/38KCJ036713
Indoor unit

PCB drawing & Wiring diagram
9
Outdoor unit
5.1 42/38QCJ036713
Indoor unit

PCB drawing & Wiring diagram
10
Outdoor unit
5.1 42/38KCJ048713
Indoor unit

PCB drawing & Wiring diagram
11
Outdoor unit
5.1 42/38QCJ048713
Indoor unit

PCB drawing & Wiring diagram
12
Outdoor unit

Installation detail
13
6Installation detail
6.1 Installation place
6.1.1 Indoor Unit
A place which provides the spaces around the indoor unit as required above in the
diagram.
A place where is no obstacle near the inlet and outlet area.
A place which can bear the weight of the indoor unit.
A place which allows the air filter to be removed downward.
A place where the reception range is not exposed to direct sunlight.
In the center of the room where possible.
6.1.1.1 Please stand the unit in hard and flat ground;
Please reserve space for installation and maintenance.
6.1.1.2 Please check the elevation difference between the indoor unit and the outdoor
unit, the length of the refrigerant pipe, and the curved places (bend) of the pipe
are no more than the following numbers:Elevation difference: no more than 10 M
(if the elevation difference between indoor and outdoor unit is more than 10
meters, it is recommended that the outdoor unit be placed above the indoor
unit.)
Pipe length: no more than 20 M
Bends: no more than 5 places
6.1.2 Outdoor Unit
6.1.2.1 Before installing the outdoor unit, you should:
Select a place where no direct sunlight or other heat-radioactivity may reach. A
sunshade is needed if it is unavoidable.
Select a place that is easy to connect indoor unit's pipe and electric wires.
Avoid a place where combustible gas may leak or stay.
Keep it in mind that water may drain out of the outdoor unit while in "Heat" mode.

Installation detail
14
6.1.2.2 If the outdoor unit is to be installed on a roof or where no constructions are
around, you should avoid hard wind blows directly to the air outlet, because it may
cause trouble for air-flow shortage.
6.1.2.3 Reserve enough space for installation, maintenance and unit-functioning.
Remove as many obstacles as possible nearby.
6.2 Installing
6.2.1 To prevent the indoor unit from falling, you must:
Pay full attention to the unit because its long outer shape makes it easy to fall;
SafetyLock Screws
3.9 25 ×
M8 Screws
Screws
3.9 25 ×
Air Outlet
Air Inlet Screwhole
(on the unit)
2
Firmly fix the unit to the wall and in the ground to avoid accidental falling.
6.2.2 Dismounting the air-inlet grid
Please take off the air-inlet grid before connecting the pipes/wires.

Installation detail
15
Pull down the two knobs on the grid, take off the two screws, then the air-inlet grid
goes free.
6.2.3 Take the Pipe Clip off before connecting the pipes and wiring; fit it
when these finished.
Use accessories 4 and 9 to connect the pipes/wires on both sides and back side.
Drain Pipe
Reamer Joint
Pipe/wire-hole positions on both sides
Wiring
Hole 35 φ
Refrigerant/drain
Pipe hole 80 φ
Reamer Joint
Refrigerant Pipe
Pipe/wire-hole position on the bottom
Wiring
Hole 35 φ
Refrigerant/drain
Pipe hole Refrigerant/drain
Pipe hole
6.2.4 Ship the a/c to the installation place originally packed;
Be careful while hanging the unit because the center of gravity of the unit is not

Installation detail
16
centralized;
Do not make the angle of inclination more than 45 degrees while shipping;(Avoid
horizontal storage)
Be sure the electric insulation work is well done if installed on metal ceiling / wall.
Fix the unit feet with bolts (M10/M8). Be sure the unit is fixed strongly enough to against
blast or earthquake.
Make a concrete basement to the unit by the above references.
6.3 Refrigerant pipe connecting
6.3.1 Pipe length and the elevation
The correct refrigerant quantity filled in the 5-meter-long pipe of the outdoor unit is
marked on the Product Data Plate. If you have to use longer pipe for every meter plus
pipe, the refrigerant should be added according to the following calculation.
Standard
length
Max. Max. Additional
(m) Elevation Elevation refrigerant
Btu/h GAS LIQUID B (m) A (m) (g/m)
24K 5/8’’ (φ16) 1/4’’ (φ9.53) 510 20 65
36K 3/4’’ (φ19) 1/2’’ (φ12.7) 515 30 90
48K 3/4’’ (φ19) 1/2’’ (φ12.7) 515 30 90
Pipe size
Capacity
6.3.2 Piping connection
6.3.2.1 Connecting Of Refrigerant Pipe

Installation detail
17
a. Only the correctly installing of indoor and outdoor unit done, can the refrigerant
pipe be connected.
b. The cut-off valves are completely close before ex-work. Before connecting the
refrigerant pipe, be careful to check whether the valves are completely close.
c. The connecting procedure of refrigerant pipe: first, unscrew the two valves on the
outdoor unit and the pipe-jointing nut on the indoor unit(please keep them care
fully). Please connect the refrigerant pipe according to the manual, the
pipe-jointing nut should be screw tightly and no leakage. Note: you need two
wrenches to make balance.
d. When the connecting of refrigerant pipe is finished, before power on the system,
you should vacuum the indoor unit through the maintenance port on the cut-off
valves, or open the high-pressure valve, and exhaust the air through the
maintenance port on the low-pressure valve(closed). It will take about ten
seconds. Then screw tightly the maintenance port. (When supplement the
refrigerant, fill through the maintenance port of the low-pressure valves on the
outdoor unit ).
e. Open all the valves completely before power on the system, or it will be sick for
low efficiency.
f. Gas leak check. Make sure no gas from connections with leak detector or soap
water.
6.3.2.2 Using bronze pipe selling in market
Completely shut the cut-off valves of the outdoor unit (as ex-work status). After the
refrigerant pipe has been connected with both the indoor and outdoor unit, let the air
exhaust out from the maintenance gap on he low-pressure cut-off valves of the
outdoor unit. Screw the nuts tightly on the maintenance gap after the air has been
drained.
6.3.2.3 To make the refrigerant pipe unblocked completely
you should keep the cut-off valves of the outdoor unit completely open after you have
finished
the above steps (step1) or step 2))
Note: Before screwing the reamer nut, smear the pipe and the connecting surface with
refrigerant oil; Check and make sure there is no leakage by soap-water or
leakage-checker after connecting;
Be sure the connecting joint on the indoor side is insulated.
Use two wrenches to connecting the pipes.
Tubing
size
Torque
9.52
3270~3990N.cm(333~407kgf.cm)
12.7
4950~6030N.cm(504~616kgf.cm)

Installation detail
18
16
6180~7540N.cm(630~770kgf.cm)
19
9720~11860N.cm(990~12106kgf.cm)
6.3.3 Air Purging
When Using the Vacuum Pump
(For method of using a manifold valve, refer to its operation manual.)
a. Completely tighten the flare nuts, A, B, C, D, connect the manifold valve charge
hose to a charge port of the low-pressure valve on the gas pipe side.
b. Connect the charge hose connection to the vacuum pump.
c. Fully open the handle Lo of the manifold valve.
d. Operate the vacuum pump to evacuate. After starting evacuation, slightly loose
the flare nut of the Lo valve on the gas pipe side and check that the air is
entering.(Operation noise of the vacuum pump changes and a compound
meter indicates 0 instead of minus)
e. After the evacuation is complete, fully close the handle Lo of the manifold valve
and stop the operation of the vacuum pump. Make evacuation for 15 minutes or
more and check that the compound meter indicates -76cmHg (-10x106Pa).
f. Turn the stem of the packed valve B about 45 counterclockwise for 6~7 seconds
after the gas coming out, then tighten the flare nut again. Make sure the pressure
display in the pressure indicator is a little higher than the atmosphere pressure.
g. Remove the charge hose from the low pressure charge hose.
h. Fully open the packed valve stems B and A.
i. Securely tighten the cap of the packed valve.
6.4 Drain Pipe of The Indoor Unit
Make sure the drainpipe is connected to the outdoor side downward;
The hard polyvinyl chloride(PVC)plastic pipe (external diameter 26 mm) sold is the
market is suitable for the attached soft drain pipe;
Please connect the Soft Drain Pipe with the Drain Pipe, then fix it with band;
If you have to connect the Drain Pipe indoors, to avoid condensing caused by air intake,
you must cover the pipe with heat-insulation material (polyethylene with Specific Gravity