Daewoo DMB-1822LH User manual

CONTENTS
1. SPECIFICATIONS.....................................................................................................2
2. CONFIGURATION.....................................................................................................4
3. OUTLINE AND DIMENSIONS .................................................................................5
4. INSTALLATION SECTION......................................................................................10
5. OPERATION............................................................................................................26
6. WIRING DIAGRAM .................................................................................................41
7. REFRIGERANT CYCLE.........................................................................................45
8. CONTROL BLOCK DIAGRAM...............................................................................46
9. TROUBLE SHOOTING...........................................................................................48
10. PCB DRIVING DESCRIPTION ............................................................................54
11. KEY COMPONENTS OF ELECTRONIC CIRCUIT ...........................................76
12. DISASSEMBLY INSTRUCTIONS........................................................................80
1) Indoor Unit ........................................................................................................80
2) Outdoor Unit .....................................................................................................83
3) Exploded Diagram (Indoor Unit)......................................................................84
4) Exploded Diagram (Outdoor Unit)...................................................................92
5) Control Box Assembly......................................................................................96
6) Control Panel Assembly.................................................................................102
Contents

2
1. SPECIFICA
TIONS
MODEL DMB-1822/1832LH (9K) DMB-1822/1832LH (9K) DMB-1822/1832LH (9K+9K)
Function
Class T
Power AC 220-240V, 50Hz
Capacity
Dehumidification 1.15 1.15 2.3
Running Current
Power Input
Starting Current 49 A
Type Rotary (DAEWOO : China)
Model RBB095M011
Capacitor 25uF/370VAC 25uF/370VAC
Type
Capacitor
Motor Model Number
Control Capillary
Charge Quality 750 g 750 g
Type Flare
OD (Liquid/Suction) 1/4" (6.35mm) / 3/8" (9.52mm)
Indoor Unit Dimension (W x H x D) 750 x 245 x 174
Outdoor Unit Dimensions (W x H x D) 800 x 615 x 325
Net Weight Indoor Unit (kg) 7.00 7.00
Outdoor Unit (kg) 62.0
Electrical
Data
Compressor
Fan
Motor
Refrigerant
(R-22)
Connection
DSB-1822/1832LH
W
Btu/h
l/h
A
W
A
Cooling Heating Cooling Heating Cooling Heating
2637.6
9000
2637.6
9000
2637.6
9000
2637.6
9000
5275.3
18000
5275.3
18000
4.6
990
4.6
990
4.6
990
4.6
990
8.6
1880
8.5
1840
Indoor Unit
Cross flow fan
1 0uF 400VAC
YDK-8-4B(Xiangming)
Outdoor Unit
Propeller fan
5+25uF 400VAC
A2919BA010(DMI)
Indoor Unit
Cross flow fan
1.0uF 400VAC
YDK-8-4B(Xiangming)
Outdoor Unit
Propeller fan
5+25uF 400VAC
A2919BA010(DMI)
-
-
-
-
-
-
-
RBB095M011
-

3
MODEL DMB-2112/2122LH (9K) DMB-2112/2122LH (12K) DMB-2112/2122LH (9K+12K)
Function
Class T
Power AC 220-240V, 50Hz
Capacity
Dehumidification 1.15 2.10 3.25
Running Current
Power Input
Starting Current 49 A
Type Rotary (DAEWOO : China)
Model RCB120M001
Capacitor 25uF/370VAC 25uF/370VAC
Type
Capacitor
Motor Model Number
Control Capillary
Charge Quality 750 g 1150 g
Type Flare
OD (Liquid/Suction) 1/4" (6.35mm) / 3/8" (9.52mm)
Indoor Unit Dimension (W x H x D) 750 x 245 x 174
Outdoor Unit Dimensions (W x H x D) 800 x 615 x 325
Net Weight Indoor Unit (kg) 7.00 9.3
Outdoor Unit (kg) 65.0
Electrical
Data
Compressor
Fan
Motor
Refrigerant
(R-22)
Connection
DSB-2112/2122LH
W
Btu/h
l/h
A
W
A
Cooling Heating Cooling Heating Cooling Heating
2637.6
9000
2637.6
9000
3516.8
12000
3516.8
12000
6154.4
21000
6154.4
21000
4.6
990
4.6
990
6.0
1300
6.0
1300
10.1
2200
10.1
2200
Indoor Unit
Cross flow fan
1.0uF 400VAC
YDK-8-4B(Xiangming)
Outdoor Unit
Propeller fan
5+25uF 400VAC
A2919BA010(DMI)
Indoor Unit
Cross flow fan
1.0uF 400VAC
YDK-8-4B/A(Xiangming)
Outdoor Unit
Propeller fan
5+25uF 400VAC
A2919BA010(DMI)
925 x 285 x 194 (815 x 285 x 195)
RBB095M011
-
-
-
-
-
-
-
-

2. CONFIGURATION
4
* You should individually install and operate each A and B units in DMB-2112LH and DMB-2122LH.
* You can exchangeably install and operate each A and B unit in DMB-1822LH and DMB-1832LH.
Model
DMB-1822LH
DMB-1832LH
DMB-2112LH
DMB-2122LH
Indoor Unit Items
Unit Capacity
A 9000 Btu/h
B 9000 Btu/h
A 12000 Btu/h
B 9000 Btu/h
Reference
A & B units are the same
A & B units are different
A
B
A
B
(DMB-1822LH)
9K
9K
A
B
(DMB-2112LH)
12K
9K
A
B
(DMB-2122LH)
12K
9K
A
B
(DMB-1832LH)
9K
9K

5
750
Plate Mounting
REMOCON
Connecting Pipe
Grille Insert
174
245
Frame Grille
Body
Plate Mounting
3. OUTLINE AND DIMENSIONS
1
INDOOR UNIT
DMB-1822LH unit A & B, DMB-2112LH unit B (9000 BTU/h)

6
750 750
Plate Mounting
REMOCON
Connecting Pipe
Grille Insert
174
245
Frame Grille
Body
Plate Mounting
DMB-1832LH unit A & B, DMB-2122LH unit B (9000 BTU/h)

DMB-2112LH unit A (12000BTU/h)
7
REMOCON
Filter - L Filter - R
Grille Insert
Frame Grille
Body
Plate Mounting
Connecting Pipe
Plate Mounting
406
194
285
925

8
DMB-2122LH unit A (12000BTU/h)

9
2
OUTDOOR UNIT
DMB-1822LH/1832LH/2112LH/2122LH
Inlet
Outlet
Outlet
Foot Cushion
800
Cabinet Front Service Cover
Service Valve
Cabinet Side
Panel Top
Guide Support
Foot
325

10
This Installation section explains how and where to connect this new air conditioner. Please read make sure all acces-
sories are included as shown below and read manual thoroughly. This Installation section is provided to assist the per-
son knowledgeable in air conditioner installation and should not be installed by anybody who is not thoroughly familiar
with this type of installation. Please contact a professional installer if necessary.
ACCESSORIES SUPPLIED WITH THE UNIT:
COPPER TUBING:
Copper tubing supplied is available at most dealers or A/C shops. Make sure the new copper tubing has the same
specifications and diameter as the original copper tubing and is as short as possible.
Note:
The remainders except for No. 2, 7, 11 are contained in the indoor boxes.
BASIC ACCESSORIES
12
8
679
3
10 11
4
No. Description Qty.
1 Wall Bracket 2
2 Outdoor Unit Cover 1
3 Remote Controller
4 Deodorizing Filter
5 Electrostatic Filter
2
2
2
6 Remote Holder 2
No. Description Qty.
7 Foot Cushion 4
8 Concrete Nails 10
9 Remote Holder Screws 6
10 Wall Bracket Screws 16
11
12 Signal connection cord 2
Battery 4
5
12
4. INSTALLATION SECTION

11
OPTIONAL ACCESSORIES
1 2
4
3
5 6
ACCESSORIES NOT SUPPLIEDWITHTHE UNIT:
No. Description Part No. Qty Material Size Remark
1 Drain Hose Extension 3103200400 2 ID19.6 X 2m PVC Pipe
2 Tape 2TQ1007502 2 PVC 75W X 0.1T X 25m
3 Copper Tubing Extension 3104402600 2 1/4" Copper Tube X L5M Wrapped with
insulator tube
3104402910 2 3/8" Copper Tube X L5M
4 Insulator Plate 3103301010 2 F-US 225 X 120 X 5T
5 Putty 2221040001 2 80g
6 Connection Cord 3112716320 2 3P X 6m
7 Cable tie 3172400500 8 L200 x W4.08
8 Fixture tie mount 3112000300 8 L24.5 x W15.5 x H11.5 x ø6.6
9 Cap wall 3100900600 2 PP
97 8

12
INSTALLATION DIAGRAM
Below is an overview for the connection of the Indoor unit to the Outdoor unit. The pages following will give detailed
instructions for full installation. Remember to read the complete Installation section and follow all the safety instructions
fully when installing the Indoor and Outdoor units.
OVERVIEW
This appliance must be installed according to national power supply acquirement.
NOTES:
•After installation it must be
possble for the user to
disconnect the power supply
plug.
•
If he AC outlet is a 3-pronged
type or other, have an
electrician install a new
outlet.
•Contanct service man when
replace the power cord set.
Drain
Hose
Ground Wire
(Not Supplied)
3/8" side piping
Signal Wire
1/4" side piping
Drain Hose
Wall
Wall
Cap
Drain
Hose
Pipes
(Not Supplied)
Signal wire
Wrap with
Tape
Copper
12000 BTU/h
or
9000 BTU/h
(9000BTU/h)
Tubing
At least 30cm
(11.8in) from unit
Maximum Height 7M (21Ft)
Maximum Length 15M (49Ft)
Any tube length between 7 and 15 meters must
be precharged with freon using the following calulation: (Length –5) x 30 grams
Adding additonal tubing will decrease efficiency
60
cm
23 6
inches
cm
10
cm
3.9 inches
60
23.6
inches
70
cm
27.6
inches
AC Outlet
and Plug
Plug into 220V~240V
AC Outlet
(Not supplied)
10cm (3 95in)
from ceiling 30cm (11.8in) from
side wall
30cm (11 8in) from
side wall
10cm (3.95in) from
side wall
10cm (3.95in) from
side wall
Wall
Bracket
Connecting
cable
Connecting cable
(Not supplied)

13
INSTALLATION
1. Determine the type of wall (sheetrock, concrete, etc.)
and make sure it is strong enough to hold indoor unit.
Select an approximate position for the unit, taking the
required distances away from walls/AC outlet into
consideration.
INDOOR UNIT
•Do not install the unit in an area with direct sunlight, near
heat sources (radiator, etc.), or an area where leakage of
flammable gas may be expected.
•Select a position in the room, high on the wall, where the
whole room can be uniformly cooled.
•Select a location that can hold the weight of the unit and
where the copper tubing, drain hose and Indoor to Outdoor
Wire have the shortest distance to the Outdoor unit.
•Make sure the Indoor unit is installed at least 10cm (3.95in)
away from the top and left side wall and at least 30cm
(11.8in) from AC outlet and right side wall (see Overview
figure on previous page).
OUTDOOR UNIT
•Do not install the unit in an area near heat sources,
exhaust fans, or an area where leakage of flammable gas
may be expected.
•Do not install the unit in a humid, damp or uneven location.
•Select a location that is well ventilated .
•Leave enough room around the unit for air intake, exhaust
and possible maintenance.
2. Determine if the hole is to be made at the left or right
hole location.
10 mm 10 mm
150 mm 60 mm
3. Using drill with hole-cutting attachment or equivalent, cut
a hole 65mm (2.56") in diameter. The hole should be
made at a slight downward slant to the outdoor side.
Measure the thickness from the inside to outside edges
and cut a PVC pipe at a slight angle 1/4" shorter than the
thickness of the wall and insert pipe in wall.
4. For sheetrock, wooden or similar wall, measure down
from the ceiling using a level or tape measure and attach
the wall bracket to the wall using 4 screws. If you are not
able to line up the holes with the beams, use toggle
bolts. Make sure the wall bracket is even and flush
against the wall.
Indoor Outdoor
Cut at slight angle
CAUTION
•Before making hole, make sure there are no studs, pipes,
electrical wiring or conduit directly behind the area to be cut.
For Concrete, or similar type wall, make holes into the wall and insert concrete nails instead of screws.
INSTALLING THE WALL BRACKET:
To install the wall bracket, follow the procedures below. One hole is required for the tubing and may be either on the left or right side.
SELECTING A SITE:
10 mm 10 mm
150 mm 60 mm
9000 Btu/h Class
12000 Btu/h Class

14
INSTALLING THE AC CONNECTION WIRE TO THE INDOOR UNIT FOR AC POWER SUPPLY
The AC Connection wire is used to supply AC from the outdoor unit to the indoor units. To install AC connection wire,
follow the procedures below.
NOTE:
•This appliance must be installed according to National power supply requirement.
•If the supply cord is damaged, it must be replaced by the manufacuturer or its service agent or a similarly
qualified person in order to avoid a hazard.
•Make sure the outdoor unit’s AC cord is not connected to AC connection wire.
•When connecting wires, make sure they are fully inserted and minimum copper wire is exposed. If they are
not, shorting, overheating, no operation, etc. may occur.
•Be sure to comply with local codes on running a wire from the indoor to the outdoor unit.
1. Open the connection cover on the indoor unit to access
the connection area.
Remove the Connection Cover.
•Loosen the screw fixed at the Connection Cover.
•Remove the Connection Cover.
2. Fish the AC connection wire from the rear of the
indoor unit through the front of the unit.
For easier connection, make sure enough wire
is pulled through the front. Use the wire as
shown below:
3. To connect wires, loosen the screw in the
Terminal Block and insert the correct wires like
following figure.
Connect the Brown wire to the “L”connection,
Yellow/Green wire to the “”connection and
the Blue wire to “N”connection.
Screw
Screw (Special screw)
Blue
Yellow/Green
Brown
LN
Brown Blue
Yellow/Green

15
4. Connect the wires to the housing and terminals on the control board individually according to the outdoor uint
connection.
indoor terminal
Connection
Cable Connection Cable
not insert
plug
Unit A
LN
indoor terminal
Unit B
LN
L1 N1
Outdoor terminal
Outdoor
L2 N2
Unit A Unit B
Brn
Y/G Brn Blu Brn Blu Y/G Brn Blu Y/G
Y/G Blu Brn Y/G Blu
LN
Power
Terminals
Signal
<INDOOR UNIT (Control Box)><INDOOR UNIT (Control Box)>
(9000 Btu/h) (12000 Btu/h)
Terminals
Signal
NOTE: We want you to observe bellow recommended specifications.
Part Name
Power plug
Power cable
Circuit breaker
Connection cable
Recommended specifications
250V 10/16A
Flexible, H05RN-F above 2.0mm2
15A
H05RN-F 0.5 or 0.75mm2 x 3P x 6m

16
Left
Tubing
2. Make sure the drain hose and copper tubing are
wrapped with the rubber insulation. Using the tape,
wrap the AC connection wire, copper tubing and drain
hose together.
MOUNTING (INDOOR UNIT)
The Indoor unit must be mounted before connecting the AC connection wire, drain hose and copper tubing. To mount,
follow the procedures below:
1. The tubing can be extended in 4 directions as shown
below. No cutting is necessary for left/rear and
right/rear tubing connections. If using left or right tub-
ing connections, remove the plastic area with a hack-
saw so pipes can go through.
CAUTION:
• Make sure the outdoor unit’s AC cord is not
connected to AC power when performing these procedures.
•Be sure to comply with local codes on running a wire
from the indoor to the outdoor unit.
•DO NOT LET THE AC CONNECTION WIRE
COME IN DIRECT CONTACT WITH THE TUBING
OR HOSE!
3. Shape the tubing so it can easily go through the hole
in the wall. Push the AC connection wire, copper tub-
ing and drain hose through the hole in the wall angling
downward. Situate the indoor unit on the wall bracket
by lifting the indoor unit slightly above the wall bracket
and then down so it is securely locked in place.
Wall Bracket
Insert Putty
Drain Hose
CAUTION:
•When using the tube reamer, hold the tube downward and make sure no copper scraps fall into the tubing.
2. Make a flare at the end of the copper tube with a flare
tool.
Make sure the inside surface and edges are smooth
and the sides are uniform length.
1. Cut the copper tube extension to the desired length
with a tube cutter. It is highly recommended that 1 foot
is added to the requested length. After cutting, debur-
ring may be necessary (see below diagram). Perform
this with a tube reamer.
BEFORE AFTER
PREPARINGTHE COPPERTUBING (NOT INCLUDED)
A copper tubing extension (not included) may need to be cut. If this is the case, it will also have to be deburred and
flared as shown below:
Flare tool
Flare nut
Connection
pipe
Right
Tubing
Right/Rear
Tubing
Left/Rear
Tubing

17
1. Remove the flare nut stoppers from the inside unit.
Determine the location of the copper tubing and
where the bends will be. Gently bend the copper tub-
ing, making sure to use big angles so no crimping will
occur. Try to do this on the first try as repeated bend-
ing may break or crimp the tubing.
2. Remove the plastic stoppers from the tubing. Connect
the large and small copper tubing to the respective
extension and rotate the flare nut with your finger until
a smooth match is made. Make sure the copper
extension has foam rubber (insulation) on it.
Flare Nutcoupler
CONNECTING COPPERTUBES
To connect the copper tubes, follow the procedures below:
NOTE:
When removing the flare nut stopper from the inside unit, confirm “Ping”, sounds because the mixed gas is charged in
the inside unit,
3. Once a smooth match is made, tighten the flare nut
using a wrench. Be very careful not to strip the
threads or flare nut. Repeat this process for the small
and large tubing. When tightening the flare nut, use
another wrench to securely hold the coupler from
twisting and possibly damaging the tubing.
4. Remove the flare nut stoppers from the outdoor unit’s
valves. Connect the larger copper tubing to the larger
valve on the outdoor unit. Connect the smaller copper
tubing to the smaller valve on the outdoor unit.
5. Perform a leak test on all copper tube connections. To
prevent heat loss and damage to walls from conden-
sation, the copper tube connections coming from the
wall must be insulated. Do this by wrapping foam rub-
ber or equivalent around the connection approximate-
ly 8mm thick so no copper tubing is exposed.
NOTES:
•As with all wiring and hookups on this unit, make sure
the AC plug on the the outdoor units are unplugged.
•Be very careful not to strip the threads or flare nut.
•When insulating the connections, use foam rubber or
equivalent.
1. Connect the drain hose extension to the drain hose
coming from the indoor unit by loosing the clamp on
the extension using a phillips screwdriver, attaching
the hoses together and then tightening the clamp.
2. Run the drain hose, slanted downward, outside. If the
drain pipe is exposed
indoors, make sure it is
thoroughly insulated so
condensation does not
ruin walls or furniture or
come in contact with the
AC connection or exten-
sion. Also, do not crease
or form a trap in the tub-
ing.
Wall Bracket
Insert Putty
Drain Hose
CONNECTINGTHE DRAIN HOSE
To connect the drain hose, follow the procedures below:

18
1. Remove the screw holding on the connection cover.
Remove the connection cover on the outdoor unit to
access the connection area.
3. Connect the wires to the housing and terminals on the control board individually as the following.
INSTALLINGTHE AC CONNECTION WIRETOTHE OUTDOOR UNIT FOR AC POWER SUPPLY
The AC connection wire is used to supply AC from the Indoor unit to the Outdoor unit. To install the AC connection wire,
follow the procedures below.
2. Route the AC connection wire into the opening on the
outdoor unit and through the wire holder. To connect
to the wire holder, loosen the screw on the wire hold-
er, insert the wires through, then tighten the screw.
NOTES:
•Make sure the outdoor unit’s AC cord is not connected to AC power when connecting the indoor/outdoor wire.
•When connecting wires, make sure they are fully inserted and minimum copper wire is exposed. If they are not,
shorting, overheating, no operation, etc. may occur.
•Be sure to comply with local codes on running a wire from the indoor to the outdoor unit.
Yellow/Green
Blue
Brown
indoor terminal
Connection
Cable Connection Cable
not insert
plug
Unit A
LN
indoor terminal
Unit B
LN
L1 N1
Outdoor terminal
Outdoor
L2 N2
Unit A Unit B
Brn
Y/G Brn Blu Brn Blu Y/G Brn Blu Y/G
Y/G Blu Brn Y/G Blu
LN
Power
Connection
Cover

19
4. To connect wires, loosen the
screw in the Terminal Block and
insert the correct wires like
following figure.
Connect the Brown wire to the
“L”connection, the
Yellow/Green wire to the “”
connection, the Blue wire to the
“N”connection.
DMB-1822/1832/2112/2122LH

20
CONNECTING SIGNAL WIRES BETWEEN INDOOR UNITS AND OUTDOOR UNIT
The signal wires are used to inter-communicate indoor and outdoor’s signal, and attached to the indoor unit at first.
To install the signal wires to outdoor unit, follow the procedures below.
NOTE:
•Make sure the indoor & outdoor unit’s AC cord is not connected to AC power when connecting the signal
wires.
•When connecting wires, make sure they are fully inserted and minimum copper wire is exposed. If they are
not, shorting, overheating, no operation, etc. may occur.
•Be sure to comply with local codes on running a wire from the indoor to the outdoor unit.
•Must be careful to insert signal wire connectors where like color is like color.
1. Remove the screw holding on the connection
cover.
Remove the connection cover on the outdoor
unit to access the connection area.
3. Insert the indoor connector into the outdoor
connector from the PCB Board individually as
the following.
2. Route the indoor signal wire into the opening on
the outdoor unit and through the wire connector,
and insert the indoor connector into the outdoor
connector.
Connection
Cover
Indoor Unit A
White
Unit A
(White) Unit B (Red)
Outdoor PCB ASS'Y
White
Red
Red
Indoor Unit B
indoor unit A White –White
indoor unit B Red –Red