Carrier 40QSM009DS User manual

Model Numbers:
Indoor Unit:
40QSM009DS; 40QTD009DS;
40QSM012DS; 40QTD012DS;
40QSM018DS; 40QTD018DS; 40QZL018DS
40QSM024DS; 40QTD024DS; 40QZL024DS;
40QSM036DS; 40QTD036DS; 40QZL036DS;
40QSM048DS; 40QTD048DS; 40QZL048DS;
40QSM060DS; 40QZL060DS;
40QSS018DS;
40QSS024DS;
40QSS036DS;
40QSS048DS;
Outdoor Unit:
38QUA009DS; 38QUA012DS; 38QUA018DS; 38QUA024DS;
38QUA036DS; 38QUA048DS;38QUA060DS;
Light commercial InVERTER
Side Discharge CDU type
SERVICE MANUAL
Table of Contents
1. Precaution
2. Part Names And Functions
3. Dimension
4. Service space
5. Refrigerant Cycle Diagram
6. Wiring Diagram
7. Static Pressure
8. Electric Characteristics
9. Sound Level
10. Accessories
11. The Specification of Power
12. Installation Details
13. Operation Characteristics
14. Electronic Function
15. Solar Panel
16. Troubleshooting
17. Disassembly Instructions
WARNING
Installation MUST conform with local building codes or, in the absence of local codes, with the
National Electrical Code NFPA70/ANSI C1-1993 or current edition and Canadian Electrical
Code Part1 CSA C.22.1.
The information contained in the manual is intended for use by a qualified service technician
familiar with safety procedures and equipped with the proper tools and test instruments
Installation or repairs made by unqualified persons can result in hazards to you and others.
Failure to carefully read and follow all instructions in this manual can result in equipment
malfunction, property damage, personal injury and/or death.
This service is only for service engineer to use.

CONTENTS
1. Precaution .................................................................................................................................................... 1
1.1 Safety Precaution..........................................................................................................................1
1.2 Warning .........................................................................................................................................1
2. Part Names and Features............................................................................................................................ 4
2.1 Model Names of Indoor/Outdoor units..........................................................................................4
2.2 Part names of Indoor/Outdoor units..............................................................................................5
2.3 Features.........................................................................................................................................9
3. Dimension .................................................................................................................................................. 20
3.1 Indoor Unit...................................................................................................................................20
3.2 Outdoor Unit................................................................................................................................26
4. Service Space ............................................................................................................................................ 28
4.1 Indoor Unit...................................................................................................................................28
4.2 Outdoor Unit................................................................................................................................30
5. Refrigerant Cycle Diagram........................................................................................................................ 31
6. Wiring Diagram .......................................................................................................................................... 32
6.1 Indoor Unit...................................................................................................................................32
6.2 Outdoor Unit................................................................................................................................37
7. Fan Curves ................................................................................................................................................. 40
8 Electric Characteristics.............................................................................................................................. 50
9 Sound Level ................................................................................................................................................ 51
9.1 Indoor unit....................................................................................................................................51
9.2 Outdoor unit.................................................................................................................................53
10 Accessories............................................................................................................................................... 54
11 The Specification of Power...................................................................................................................... 56
12 Installation Details.................................................................................................................................... 59
12.1 Location selection...................................................................................................................59
12.2 Indoor unit installation.............................................................................................................59
12.3 Outdoor unit installation..........................................................................................................66
12.4 Refrigerant pipe installation....................................................................................................66
12.5 Drainage pipe installation.......................................................................................................71
12.6 Vacuum Drying and Leakage Checking.................................................................................74
12.7 Additional refrigerant charge..................................................................................................75
12.8 Engineering of insulation........................................................................................................75
12.9 Engineering of electrical wiring...............................................................................................76
12.10 Test operation......................................................................................................................77
13. Operation Characteristics....................................................................................................................... 78
14. Electronic Function ................................................................................................................................. 79
14.1 Abbreviation...............................................................................................................................79
14.2 Display function.........................................................................................................................79
14.3 Main Protection..........................................................................................................................79

14.4 Operation Modes and Functions...............................................................................................80
16. Troubleshooting....................................................................................................................................... 86
16.1 Indoor Unit Error Display...........................................................................................................87
16.2 Outdoor unit error display..........................................................................................................88
For 9K-24K outdoor unit:...................................................................................................................88
For 36K-48K Outdoor Unit.................................................................................................................88
Outdoor check function......................................................................................................................89
16.3 Diagnosis and Solution..............................................................................................................91
16.4 Main parts check.....................................................................................................................107

1
1. Precaution
1.1 Safety 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 the unit, be sure to
read this service manual at first.
1.2 Warning
Installation
Do not use a defective or underrated
circuit breaker. Use this appliance on a
dedicated circuit.
There is risk of fire or electric shock.
For electrical work, contact the dealer,
seller, a qualified electrician, or an
authorized service center.
Do not disassemble or repair the product,
there is risk of fire or electric shock.
Always ground the product.
There is risk of fire or electric shock.
Install the panel and the cover of
control box securely.
There is risk of fire of electric shock.
Always install a dedicated circuit and
breaker.
Improper wiring or installation may cause
electric shock.
Use the correctly rated breaker of
fuse.
There is risk of fire or electric shock.
Do not modify or extend the power
cable.
There is risk of fire or electric shock.
Do not install, remove, or reinstall the
unit by yourself (customer).
There is risk of fire, electric shock, explosion,
or injury.
Be caution when unpacking and
installing the product.
Sharp edges could cause injury, be especially
careful of the case edges and the fins on the
condenser and evaporator.
For installation, always contact the
dealer or an authorized service center.
Do not install the product on a
defective installation stand.
Be sure the installation area does not
deteriorate with age.
If the base collapses, the air conditioner could
fall with it, causing property damage, product
failure, and personal injury.
Do not let the air conditioner run for a
long time when the humidity is very high
and a door or a window is left open.
Take care to ensure that power cable
could not be pulled out or damaged during
operation.
There is risk of fire or electric shock.
Do not place anything on the power
cable.
There is risk of fire or electric shock.
Do not plug or unplug the power
supply plug during operation.
There is risk of fire or electric shock.
Do not touch (operation) the product
with wet hands.
Do not place a heater or other
appliance near the power cable.
There is risk of fire and electric shock.
Do not allow water to run into
electrical parts.
It may cause fire, failure of the product, or
electric shock.
Do not store or use flammable gas or
combustible near the product.
There is risk of fire or failure of product.
Do not use the product in a tightly
closed space for a long time.
Oxygen deficiency could occur.
When flammable gas leaks, turn off
the gas and open a window for ventilation
before turn the product on.

2
If strange sounds or smoke comes
from product, turn the breaker off or
disconnect the power supply cable.
There is risk of electric shock or fire.
Stop operation and close the window
in storm or hurricane. If possible, remove
the product from the window before the
hurricane arrives.
There is risk of property damage, failure of
product, or electric shock.
Do not open the inlet grill of the
product during operation. (Do not touch the
electrostatic filter, if the unit is so equipped.)
There is risk of physical injury, electric shock,
or product failure.
When the product is soaked, contact
an authorized service center.
There is risk of fire or electric shock.
Be caution that water could not enter
the product.
There is risk of fire, electric shock, or product
damage.
Ventilate the product from time to
time when operating it together with a stove
etc.
There is risk of fire or electric shock.
Turn the main power off when
cleaning or maintaining the product.
There is risk of electric shock.
When the product is not be used for a
long time, disconnect the power supply plug
or turn off the breaker.
There is risk of product damage or failure, or
unintended operation.
Take care to ensure that nobody
could step on or fall onto the outdoor unit.
This could result in personal injury and
product damage.
CAUTION
Always check for gas (refrigerant)
leakage after installation or repair of
product.
Low refrigerant levels may cause failure of
product.
Install the drain hose to ensure that
water is drained away properly.
A bad connection may cause water leakage.
Keep level even when installing the
product.
It can avoid vibration of water leakage.
Do not install the product where the
noise or hot air from the outdoor unit could
damage the neighborhoods.
It may cause a problem for your neighbors.
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.
It may cause corrosion on the product.
Corrosion, particularly on the condenser and
evaporator fins, could cause product
malfunction or inefficient operation.
Operational
Do not expose the skin directly to
cool air for long time. (Do not sit in the
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.
There is risk of damage or loss of property.
Do not block the inlet or outlet of air
flow.
Use a soft cloth to clean. Do not use
harsh detergents, solvents, etc.
There is risk of fire, electric shock, or damage
to the plastic parts of the product.
Do not touch the metal parts of the
product when removing the air filter. They
are very sharp.
Do not step on or put anything on the
product. (outdoor units)
Always insert the filter securely.
Clean the filter every two weeks or more
often if necessary.
A dirty filter reduces the efficiency of the air
conditioner and could cause product
malfunction or damage.

3
Do not insert hands or other objects
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.
Be careful and avoid personal injury.
Replace the all batteries in the remote
control with new ones of the same type. Do
not mix old and new batteries or different
types of batteries.
There is risk of fire or explosion.
Do not recharge or disassemble the
batteries. Do not dispose of batteries in a
fire.
They may burn of explode.
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.

4
2. Part Names and Features
2.1 Model Names of Indoor/Outdoor units
Series
Capacity
Indoor units
Outdoor units
Cassette
18K
40QTD018DS
38QUA018DS;
Floor Ceiling
40QZL018DS
A5 Ducted
40QSM018DS
A6 Ducted
40QSS018DS
Cassette
24K
40QTD024DS
38QUA024DS;
Floor Ceiling
40QZL024DS
A5 Ducted
40QSM024DS
A6 Ducted
40QSS024DS
Cassette
36K
40QTD036DS
38QUA036DS;
Floor Ceiling
40QZL036DS
A5 Ducted
40QSM036DS
A6 Ducted
40QSS036DS
Cassette
48K
40QTD048DS
38QUA048DS;
Floor Ceiling
40QZL048DS
A5 Ducted
40QSM048DS
A6 Ducted
40QSS048DS
Floor Ceiling
60K
40QZL060DS
38QUA060DS
HEPS Ducted
40QSM060DS

5
2.2 Part names of Indoor/Outdoor units
Cassette Unit

6
A5 Ducted Units
A6 Ducted Units

7
Floor ceiling Units

8
HESP DUCTED Units

9
2.3 Features
2.3.1 A5 Duct Units
2.3.1.1 Easy Installation: Two air Inlet Styles (Bottom side or Rear side)
Air inlet from rear is standard for all capacity; air inlet from bottom is optional.
The size of air inlet frame from rear and bottom is same, it’s very easy to move the cover from
bottom to rear side, or from rear to the bottom, in order to matching the installation condition.
2.3.1.2 Fresh Air Intake Function
Install one duct from the reserved fresh-air intake to outdoor.
Continually inhale the fresh air to improve the quality of the indoor air, fulfills air quality more
healthy and comfortable.
2.3.1.3 Easy Maintenance
Clean the filter (Optional, standard product without filter)
It is easy to draw out the filter from the indoor unit for cleaning, even the filter is installed in rear
side or bottom side.
Replace the motor or centrifugal fan
Remove the ventilated panel firstly. Remove a half of blower housing and take out the motor with
centrifugal fan. Directly remove two bolts, and then replace the motor or centrifugal fan easily.
Air intake from rear (Standard)
Air intake from bottom (Optional)

10
2.3.1.4 Reserved Remote On-off and Central Control Ports
Reserved remote on-off ports and central control ports, can connect the cable of an on-off
controller or a central controller to realize remote on-off control function or group control function.
2.3.1.5 Built-in Drain Pump (Optional):
Built-in drain pump can lift the water to 750mm upmost. It’s convenient to install drainage piping
under most space condition.
Motor
Blower Housing
Ventilated Panel
Remote on-off ports
Central control ports
750mm upmost

11
2.3.1.6 Built-in Display Board
The standard indoor unit can be controlled by wired controller.
There is a display board with a receiver in the E-box. Move out the display, and fix it in other place,
even in the distance of 2m. The unit will realized remoter control.
The wired controller and the display board can display the error code or production code when the
chips detect some failure.
Display
Wired Controller (Standard)
Remote Controller (Optional)

12
2.3.2 Cassette Unit
2.3.2.1 Lower Noise
Optimize air channel system design to ensure the maximum quietness and comfort.
Noise max down 6dB.
2.3.2.2 Turbo Mode (Optional)
Turbo function can boost cooling or heating speed in a short period, and makes the room cool
down or heat up rapidly.
2.3.2.3 Fire-proof Controller Box
Electrical control box adopts new design, which can meet higher fire safety requirements.
2.3.2.4 Fresh Air
Fresh air intake function bring you fresh and comfortable air feeling.
2.3.2.5 Wired Controller (Optional)
Compared with infrared remote controller, wired controller can be fixed on the wall and avoid
mislaying. It's mainly used for commercial zone and makes air conditioner control more
convenient.
Old
New
Turbo Mode (After 30 min)
Cold
Hot
Common vs. Turbo
Old
New

13
2.3.2.6 Build-in Drain Pump
The drain pump can lift the condensing water up to 750mm upmost.
It’s convenient to install drainage piping under most space condition.
2.3.2.7Terminals For Alarm Lamp and Long-distance On-off Controller Connection Are
Standard
Reserve terminals for the connection of alarm lamp and long-distance on-off controller, more
human control.

14
2.3.3 Ceiling-floor Units
2.3.3.1 Two-way Installation
The rounded design of the ceiling and floor type air conditioner allows either ceiling or floor-level
installation. Ceiling installation saves room space, while floor installation helps prevent the loss of
warm air.
2.3.3.2 Brief Design
Brief design that is suitable for any interior will not only give you cooling and heating performance
but also upgrade your lifestyle.
2.3.3.3 3D Airflow
Vertical air flow and horizontal airflow can be adjusted by remote controller, the cooperation of the two
airflow ways help to spread air comfortably throughout even a large room. With these functions, the
whole room can be evenly air-conditioned for both floor-level and ceiling installation.

15
2.3.3.4 Optional Drainage Pipe Connection
Both right side and left side drainage holes are available to avoid the space limitation for drainage
pipe installation. Make you more convenient during installation.
C Panel (LED display) D Panel
2.3.3.5 Convenience Operating and Easy Maintenance
Remote controller as standard, wired controller for optional.
The filter without screw fixed, can be took out easily.
2.3.3.6 Easy Installation, Save Working Time
The pipes can be connected from bottom, back and right side, makes the installation more easily.
The wiring works can be finished before installation.
2.3.3.7 Outside Water Pump for Optional When Ceiling Installation.

16
2.3.4 A6 Duct Units
2.3.4.1. Higher Static Pressure
As a ducted air conditioner with medium static pressure, it has the widest static pressure range.
The maximum static pressure reaches 160Pa
2.3.4.2. Slim Design
The industry Lowest height is designed to be fitted into tight roof spaces.
*18K unit - 210mm,24K/36K unit - 249mm,48K unit -300mm
2.3.4.3. Constant air volume control
For ordinary duct, when the static pressure exceeds the expected range, it is fairly difficult even for
an experienced installer to calculate and adjust the air volume precisely.
With constant air volume control technology, the duct will automatically adjusts to perfect static
pressure and keep constant air volume.
2.3.4.4.Flexible Air Intake Way (Bottom side or Rear side)
The frame size of air inlet in rear and bottom is the same. It’s very easy to switch to match different
application.

17
2.3.4.5. Communication wire connection
A6 duct uses two wires without polarity connection way, which almost has no mistake during the
installation.
2.3.4.6.Easy Clean
With a larger window design, once the motor and the blower wheels have been detached, heat
exchanger and water receiver tray in behind can be seen very clearly. Dust can be easily removed
from the inside by vacuum
2.3.4.7.Fresh air intake function(Optional)
Install one duct from the reserved fresh-air intake to outdoor.
Continually inhale the fresh air to improve the quality of the indoor air, fulfills air quality more
healthy and comfortable.
Air intake from rear (Standard)
Air intake from bottom (Optional)