DuctlessAire ES Series User manual

DuctlessAire ES Series
Service Manual 2016
ABSSA-B4-1601

CONTENTS
1. Precaution.........................................................................................................................1
1.1 Safety Precaution ................................................................................................... 1
1.2 Warning .............................................................................................................................. 1
2. Model list..........................................................................................................................4
3. Dimension ........................................................................................................................5
3.1 Indoor Unit .......................................................................................................................... 5
3.2 Outdoor Unit........................................................................................................................ 7
4. Refrigerant Cycle Diagram ..............................................................................................11
5 Installation Details ...........................................................................................................12
5.1 Wrench torque sheet for installation ................................................................................ 12
5.2 Connecting the cables ....................................................................................................... 12
5.3 Pipe length and the elevation............................................................................................ 13
5.4 Installation for the first time.............................................................................................. 14
5.5 Adding the refrigerant after running the system for many years...................................... 15
5.6 Re-installation while the indoor unit needs to be repaired......................................................15
5.7 Re-installation while the outdoor unit needs to be repaired ............................................ 16
6. Operation Characteristics ...............................................................................................18
7. Electronic function ..........................................................................................................19
7.1 Abbreviation ...................................................................................................................... 19
7.2 Display function ............................................................................................ 19
7.3 Main Protection................................................................................................................. 20
7.4 Operation Modes and Functions ....................................................................................... 21
8. Troubleshooting..............................................................................................................27
8.1 Indoor Unit Error Display................................................................................................... 28
8.2 Troubleshooting................................................................................................................. 29

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 servicing the unit, be sure to
read this service manual.
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 or electric shock.
Install the panel and the cover of
control box securely.
There is risk of fire or electric shock.
Always install a dedicated circuit and
breaker.
Improper wiring or installation may
cause fire or 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.
Use 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 the 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 or operate the product
with wet hands, or while standing in
water.
Do not place a heater or other
appliance near the power cable.
There is risk of fire or 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 or
combustible gas near the product.
There is risk of fire or failure of product.

2
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 turning the product on.
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 sure 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 fire or electric shock.
When the product will 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 surrounding.
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 directly exposed to sea wind (salt
spray).
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 periods of 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.

3
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.
Do not insert hands or other objects
through the 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 all the 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 the
batteries in a fire.
They may burn or explode.
If the liquid from the batteries gets
onto your skin or clothes, wash
thoroughly with clean water. Do not
use the remote if the batteries have
leaked.

4
2. Model List
Model Names of Indoor/Outdoor Units
3D i n v e rt e r
Capacity
Indoor units
Outdoor units
12K
DA1221-H2-I
DA1221-H2-O
18k
DA1821-H2-I
DA1821-H2-O
24K
DA2421-H2-I
DA2421-H2-O

5
3. Dimension
3.1 Indoor Unit
Model
W
D
H
DA1221-H2-I
802
189
297
DA1821-H2-I
1080
226
335
DA2421-H2-I
1080
226
335

6
For DA1221-H2-I,
For DA1821-H2-I, DA2421-H2-I,

7
3.2 Outdoor Unit
More than 30cm
More than 30cm
More than 60cm
More than 200cm
More than 60cm
(Service space)

8
For DA1221-H2-O,

9
For DA1821-H2-O,

10
For DA2421-H2-O,

11
4. Refrigerant Cycle Diagram

12
5. Installation Details
5.1 Wrench torque sheet for installation
Outside diameter
Torque
Additional tightening torque
mm
inch
N.cm
N.cm
Ф6.35
1/4
1500(153kgf.cm)
1600(163kgf.cm)
Ф9.52
3/8
2500(255kgf.cm)
2600(265kgf.cm)
Ф12.7
1/2
3500(357kgf.cm)
3600(367kgf.cm)
Ф15.9
5/8
4500(459kgf.cm)
4700(479kgf.cm)
Ф19
3/4
6500(663kgf.cm)
6700(683kgf.cm)
5.2 Connecting the cables
The power cord of connect should be selected according to the following specifications sheet.
Rated current of appliance
Nominal cross-sectional area (mm ² )
>3 and ≤6
0.75
>6 and ≤10
1
>10 and ≤16
1.5
>16 and ≤25
2.5
>25 and ≤32
4
The cable size and the current of the fuse or switch are determined by the maximum current indicated on the
nameplate which is located on the side panel of the unit. Please refer to the nameplate before selecting the cable, fuse
and switch.

13
5.3 Pipe length and the elevation
The pipe length and refrigerant amount:
Model
Pipe size
Standard
length
(m)
Max.
Elevation
B (m)
Max.
Length
A (m)
Additional
refrigerant
(g/m)
Gas
Liquid
DA1221-H2-I + DA1221-H2-O
1/2’’
(Ф12.7)
1/4’’
(Ф6.35)
7.5
10
25
15
DA1821-H2-I + DA1821-H2-O
1/2’’
(Ф12.7)
1/4’’
(Ф6.35)
7.5
20
30
15
DA2421-H2-I + DA2421-H2-O
5/8’’
(Ф15.9)
3/8’’
(Ф9.52)
7.5
25
50
30
Caution:
The capacity test is based on the standard length, and the maximum permissive length is based on the system
reliability.

14
5.4 Installation for the first time
Air and moisture in the refrigerant system have
undesirable effects as below:
Pressure in the system rises.
Operating current rises.
Cooling or heating efficiency drops.
Moisture in the refrigerant circuit may freeze and
block capillary tubing.
Water may lead to corrosion of parts in the
refrigerant system.
Therefore, the indoor units and the pipes between
indoor and outdoor units must be leak tested and
evacuated to remove gas and moisture from the
system.
Gas leak check (Soap water method):
Apply soap water or a liquid neutral detergent
on the indoor unit connections or outdoor unit
connections by a soft brush to check for leakage of
the connecting points of the piping. If bubbles come
out, the pipes have leakage.
1. Air purging with vacuum pump
1) Completely tighten the flare nuts of the indoor and
outdoor units, confirm that both the 2-way and
3-way valves are set to the closed position.
2) Connect the charge hose with the push pin of
handle lo to the 3-way valves gas service port.
3) Connect the charge hose of handle hi connection
to the vacuum pump.
4) Fully open the handle Lo of the manifold valve.
5) Operate the vacuum pump to evacuate.
6) Make evacuation for 30 minutes and check
whether the compound meter indicates
-0.1Mpa. If the meter does not indicate
-0.1Mp after pumping 30 minutes, it should
be pumped 20 minutes more. If the pressure
can’t achieve -0.1Mpa after pumping 50
minutes, please check if there are some
leakage points.
7) Fully close the handle Lo valve of the manifold
valve and stop the operation of the vacuum
pump. Confirm that the gauge needle does
not move (approximately 5 minutes after
turning off the vacuum pump).
8) Turn the flare nut of the 3-way valves about
45° counterclockwise for 6 or 7seconds
after the gas comes out, then tighten the
flare nut again. Make sure the pressure
display in the pressure indicator is a little
higher than the atmosphere pressure. Then
remove the charge hose from the 3 way
valve.
9) Fully open the 2 way valve and 3 way valve and
securely tighten the cap of the 3 way valve.
2. Air purging by refrigerant
Procedure:
1) Confirm that both the 2-way and 3-way valves are
set to the closed position.
2) Connect the charge set and a charging
cylinder to the service port of the 3-way valve.

15
3) Air purging-
Open the valves on the charging cylinder and the
charge set. Purge the air by loosening the flare
nut on the 2-way valve approximately 45’ for 3
seconds then closing it for 1 minute; repeat 3
times.
After purging the air, use a torque wrench to
tighten the flare nut on the 2-way valve.
4) Check the gas leakage. Check the flare connections
for gas leakage.
5) Discharge the refrigerant. Close the valve on the
charging cylinder and discharge the refrigerant
by loosening the flare nut on the 2-way valve
approximately 45’until the gauge indicates 0.3 to
0.5 Mpa.
6) Disconnect the charge set and the charging cylinder,
and set the 2-way and 3-way valves to the open
position. Be sure to use a hexagonal wrench to
operate the valve stems.
7) Mount the valve stems nuts and the service
port cap. Be sure to use a torque wrench to
tighten the service port cap to a torque 18N·m.
Be sure to check the gas leakage.
5.5 Adding the refrigerant after running the
system for many years
Procedure:
1) Connect the charge hose to the 3-way service
port. Open the 2-way valve and the 3-way
valve. Connect the charge hose to the valve
at the bottom of the cylinder. If the refrigerant
is R410A, make the cylinder bottom up to
ensure liquid charge.
2) Purge the air from the charge hose. Open the
valve at the bottom of the cylinder and press
the check valve on the charge set to purge the
air (be careful of the liquid refrigerant).
3) Put the charging cylinder onto the electronic scale
and record the weight.
4) Operate the air conditioner at the cooling
mode.
5) Open the valves (Low side) on the charge set and
charge the system with liquid refrigerant.
6) When the electronic scale displays the proper
weight (refer to the gauge and the pressure of
the low side), disconnect the charge hose
from the 3-way valve’s service port
immediately and turn off the air conditioner
before disconnecting the hose.
7) Mount the valve stem caps and the service
port. Use torque wrench to tighten the service
port cap to a torque of 18N.m. Be sure to check
for gas leakage.
5.6 Re-installation while the indoor unit needs
to be repaired
1. Collecting the refrigerant into the outdoor unit
Procedure
1) Confirm that both the 2-way and 3-way valves
are set to the opened position. Remove the
valve stem caps and confirm that the valve
stems are in the opened position. Be sure to
use a hexagonal wrench to operate the valve
stems.

16
2) Connect the charge hose with the push pin of
handle lo to the 3-way valves gas service port.
3) Air purging of the charge hose. Open the handle Lo
valve of the manifold valve slightly to purge air
from the charge hose for 5 seconds and then
close it quickly.
4) Set the 2-way valve to the close position.
5) Operate the air conditioner at the cooling cycle and
stop it when the gauge indicates 0.1MPa.
6) Set the 3-way valve to the closed position
immediately
Do this quickly so that the gauge ends up indicating
0.3 to 0.5Mpa.
Disconnect the charge set, and tighten the 2-way
and 3-way valve’s stem nuts.
Use a torque wrench to tighten the 3-way valves
service port cap to a torque of 18N.m.
Be sure to check for gas leakage.
2. Air purging by the refrigerant
Procedure:
5) Discharge the refrigerant. Close the valve on the
charging cylinder and discharge the
refrigerant by loosening the flare nut on the
2-way valve approximately 45’until the gauge
indicates 0.3 to 0.5 Mpa.
6) Disconnect the charge set and the charging
cylinder, and set the 2-way and 3-way valves to
the open position. Be sure to use a hexagonal
wrench to operate the valve stems.
7) Mount the valve stems nuts and the service
port cap. Be sure to use a torque wrench
to tighten the service port cap to a torque
18N.m. Be sure to check the gas leakage.
5.7 Re-installation while the outdoor unit needs to
be repaired
1. Evacuation for the whole system
Procedure:
1) Confirm that both the 2-way and 3-way valves
are set to the opened position.
2) Connect the vacuum pump to 3-way valve’s
service port.
3) Evacuation for approximately one hour. Confirm
that the compound meter indicates -0.1Mpa.
4) Close the valve (Low side) on the charge set, turn
off the vacuum pump, and confirm that the
gauge needle does not move (approximately
5 minutes after turning off the vacuum pump).
5) Disconnect the charge hose from the vacuum
pump.
2. Refrigerant charging
Procedure:
1) Connect the charge hose to the charging cylinder,
open the 2-way valve and the 3-way valve.
Connect the charge hose which you disconnected
from the vacuum pump to the valve at the bottom

17
of the cylinder. If the refrigerant is R410A, make
the cylinder bottom up to ensure liquid charge.
2) Purge the air from the charge hose. Open the valve
at the bottom of the cylinder and press the check
valve on the charge set to purge the air (be careful
of the liquid refrigerant).
3) Put the charging cylinder onto the electronic scale
and record the weight.
4) Open the valves (Low side) on the charge set and
charge the system with liquid refrigerant. If the
system cannot be charge with the specified amount
of refrigerant, or can be charged with a little at a
time (approximately 150g each time), operating
the air conditioner in the cooling cycle; however,
one time is not sufficient, wait approximately 1
minute and then repeat the procedure.
5) When the electronic scale displays the proper
weight, disconnect the charge hose from the 3-way
valve’s service port immediately. If the system has
been charged with liquid refrigerant while
operating the air conditioner, turn off the air
conditioner before disconnecting the hose.
6) Mounting the valve stem caps and the service port.
Use torque wrench to tighten the service port
cap to a torque of 18N.m. Be sure to check for gas
leakage.

18
6. Operation Characteristics
CAUTION:
1. If the air conditioner is used beyond the above conditions, certain safety protection features may come into
operation and cause the unit to operate abnormally.
2. The room relative humidity should be less than 80%. If the air conditioner operates beyond this figure, the
surface of the air conditioner may attract condensation. Please set the vertical air flow louver to its maximum
angle (vertically to the floor), and set HIGH fan mode.
3. The optimum performance will be achieved during this operating temperature zone.