Goldstar DH2510A User manual

Dehumidifier
SERVICE MANUAL
MODEL: DH2510A
DH4010A
DH5010A
CAUTION
- BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
- ONLY FOR AUTHORIZED SERVICE.
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http://www.LGservice.com/techsup.html

—2—
1. PREFACE
1.1 SAFETY PRECAUTIONS...........................................................................................................................3
1.2 FEATURES.................................................................................................................................................3
1.3 DIMENSIONS.............................................................................................................................................3
1.4 SPECIFICATIONS......................................................................................................................................4
1.5 CONTROL ..................................................................................................................................................5
1.6 HOW TO OPERATE DEHUMIDIFIER........................................................................................................5
1.6.1 HOW DOES THE DEHUMIDIFIER WORK? .....................................................................................5
1.6.2 LOCATION FOR THE DEHUMIDIFIER.............................................................................................5
1.6.3 SWITCH ASSEMBLY, MICRO..........................................................................................................6
1.6.4 CONTROL, DEFROST......................................................................................................................6
1.6.5 HUMIDISTAT.....................................................................................................................................6
1.6.6 DRIER ASSEMBLY...........................................................................................................................6
2. CIRCUIT DIAGRAM............................................................................................................................7
3.
DISASSEMBLY INSTRUCTIONS
3.1 MECHANICAL PARTS ...............................................................................................................................9
3.1.1 BUCKET AND AIR FILTER...............................................................................................................9
3.1.2 FRONT GRILLE.................................................................................................................................9
3.1.3 CONTROL BOX ASSY AND CABINET.............................................................................................9
3.2 CONTROL PARTS AND CYCLE PARTS.................................................................................................10
3.2.1 ROTARY SWITCH, HUMIDISTAT AND NEON LAMP....................................................................10
3.2.2 CAPACITOR AND TERMINAL BLOCK...........................................................................................10
3.2.3 DEFROST CONTROL.....................................................................................................................10
3.2.4 MICRO SWITCH ASSY...................................................................................................................10
3.2.5 POWER CORD ASSY.....................................................................................................................10
3.2.6 FAN AND MOTOR...........................................................................................................................11
3.2.7 HOUSING ASSY .............................................................................................................................11
3.2.8 P.T.C. ASSEMBLY OR OVERLOAD PROTECTOR (O.L.P.) .........................................................12
3.2.9 COMPRESSOR ..............................................................................................................................12
3.3 REFRIGERATING CYCLE .......................................................................................................................13
3.3.1 CONDENSER ASSEMBLY AND EVAPORATOR ASSEMBLY
(HEAT EXCHANGE ASSEMBLY)...................................................................................................13
3.3.2 CAPILLARY TUBE ASSEMBLY......................................................................................................13
3.4 HOW TO REPLACE REFRIGERATION SYSTEM...................................................................................14
4. TROUBLESHOOTING GUIDE...................................................................................................16
5. EXPLODED VIEW - INTRODUCTION..................................................................................19
6. REPLACEMENT PARTS LIST...................................................................................................23
CONTENTS

—3—
1. PREFACE
This Service Manual provides various service information, containing the mechanical and electrical parts etc.
This dehumidifier was manufactured and assembled under the strict quality control system.
The refrigerant is charged at the factory. Be sure to read the safety precaution prior to servicing the unit.
1.1 SAFETY PRECAUTIONS
• Disconnect power supply before servicing or replacing any electrical or non-electrical component.
• Do not, under any circumstances, cut off the grounding prong or alter the plug in any manner.
1.2 FEATURES
• High efficiency
• Quiet
• Adjustable humidistat
• Automatic defrost
• Automatic shut-off
• Water-full indicator light
• Adjustable water level
• Easy roll casters
• Removable & large capacity bucket, direct hose connectable
• Washable air filter
• Fan speed: High/Low 2 fan speeds
• Drain hose connection.
1.3 DIMENSIONS (mm/in)
320 (12 9/16) 340 (13 3/8)
445 (17 1/2)
530 (20 3/16)

—4—
1.4 SPECIFICATIONS
DH2510A DH4010A DH5010A
CAPACITY (Pint/Day) 25 40 50
POWER SUPPLY (Phase, V, Hz) 1ø, 115V, 60Hz
REFRIGERANT R134a R22
REFRIGERANT CHARGE, oz(g) 4.4(125) 5.1(145) 7.2(204)
CONTROL, DEFROST OPEN : 35.6˚F(3˚C )
CLOSE : 53.6˚F(13˚C )
HUMIDISTAT CONTROL RANGE : 20% ~ 80% RH
NORMAL SETTING : 42 ± 5% RH
COMPRESSOR MODEL NO. LX72HACG QA082CH11A
TYPE P220MC
TIME
AMPERE
7A
VOLTAGE 300V
CAPACITOR - 25µF, 350/370VAC
SWITCH, ROTARY 20A, 125/250VAC
MOTOR ASSEMBLY, SINGLE
SWITCH ASSEMBLY, MICRO 16A, 125/250VAC
WITHOUT BUCKET 320 x 530 x 340 (12 9/16 x 20 13/16 x 13 3/8)
WITH BUCKET 320 x 530 x 445 (12 9/16 x 20 13/16 x 17 1/2)
NET WEIGHT, kg(lbs) 22.5 (49.6) 18.5(40.7) 20(44.1)
MODELS
ITEMS
P.T.C.
ASSEMBLY
MAXIMUM
WORKING TIME: 0.2 ~ 0.7 sec.
RETURN TIME: 60 sec. –
4P, less than 45W, less than 0.4A, T.P: 17AM0335-4(266°F/130°C)
•OVERLOAD PROTECTOR FOR COMPRESSOR
•INTERNAL PROTECTOR FOR MOTOR ASSEMBLY, SINGLE
OUTSIDE
DIMENSIONS
W x H x D, mm(in)
PROTECTOR
※※NOTE : Specifications are subject to minor change without notice for further improvement.
+ 3
–3
+ 3
–3

1.6.1 HOW DOES THE DEHUMIDIFIER WORK?
The dehumidifier, as shown in Figure 1, consists of a
small refrigerant system and a fan. The fan pulls
humid air from the room, across the cold evaporator
coil where the water drips off into a bucket or drain
hose.
1.6.2 LOCATION FOR THE DEHUMIDIFIER
1. In order for the unit to operate effectively, all doors,
windows and other openings should be closed.
Moisture-laden outdoor air will only add to the
dehumidifier's operating load.
2. Allow at least 12 inches of space on all sides of the
unit for good air circulation.
3. Install your dehumidifier on a floor, table, or shelf.
When installing the dehumidifier on a table or shelf,
make sure the table or shelf is strong enough to
support the weight of the dehumidifier with a full
bucket. Do not sit or stand on the dehumidifier.
NOTE: The height of a table or shelf might provide
a better position from which to handle the
bucket and help prevent icing of the coils
due to colder air near the floor (such as in a
basement).
Humidity Control
•The Humidity Control can be set anywhere between
Off and Max for normal operation. If you need more
dehumidification, turn the Humidity Control toward
Max. If you need less dehumidification, turn the
Humidity Control toward Off.
•Turn the Humidity Control to Off to stop the unit
manually.
Fan Speed
•If you want to control the speed of air flow, turn the
Fan Speed toward Low or High.
Auto Shut-Off
LAMP ON : Bucket is full.
LAMP OFF : Bucket isn't full.
•When the bucket is full, operation automatically shuts
down and a lamp also lights.
—5—
HighLow
8
Humidity Control
Fan Speed
Auto
Shut-Off Off
1
2
3
456
7
9
Max.
Dry
Air Out Humid Air In
Fan
Compressor
Side View
Bucket
Condenser
Assembly Evaporator
Assembly
Drain
Connection
Motor
Assembly
12"
Air In
Air Out
12"
Figure 1
Figure 2
1.6 HOW TO OPERATE DEHUMIDIFIER
1.5 CONTROL

1.6.5 HUMIDISTAT
Humidistat maintains the constant relative humidity in the
room automatically to satisfy particular need.
(When the relative humidity in the room increases to the
selected level, the dehumidifier starts automatically.) Once
the relative humidity drops to the selected level, the
dehumidifier stops automatically.
When first using the dehumidifier, it is recommended, for
the first three or four days, to operate the unit with the
humidistat control set at the MAX. At this setting, the unit
will run continuously.
When the sweating has stopped and the dampness odors
have gone, it is preferable to select the humidistat position
that will best suit local conditions.
The relative humidity range it can control is from 20 % to
80%. (See Figure 3)
NOTE: The relative humidity at the number is the
approximate value.
1.6.6 DRIER ASSEMBLY
Dryer is used to prevent water from overflowing in all tubes
and H/E assembly-condenser assembly and evaporator
assembly-and an acid, water and bad material from heating
oil. Also, dryer is used to remove corrosion of the
components.
NOTE: When dryer is replaced, proper injection to
capillary is needed. On opening the dryer, it
should be welded instantly. The oxidization of
dryer inside and all tubes inside after welding
can be prevented.(For Model DH2510A)
—6—
42% R.H 40%
7(30%)
6(35%)4(50%)
3(60%)
2(70%)
1(80%)
5(42%)
8(25%)
9(20%)
Max.Off DEAD DIAL
Dryer
Figure 4
Figure 3
1.6.3 SWITCH ASSEMBLY, MICRO
The micro switch assembly, which is located on the back of the unit, automatically shuts off the dehumidifier when the bucket is
full (note, the Auto Shut Off lights, to indicate bucket must be emptied). Once the bucket has been emptied and replaced, the
unit once again turns itself on.
NOTE: Before removing the bucket, turn the Humidity Control to Off.
1.6.4 CONTROL, DEFROST
The Defrost Control senses frost build-up on the evaporator coil and automatically shuts off the compressor. The fan continues
to run, drawing air across the coil and melting the frost. When the coil is defrosted, the compressor automatically restarts, and
dehumidifying resumes.
NOTE: Do not operate the dehumidifier at temperature below 65˚F(18˚C). If your dehumidifier runs when the
temperature and humidity conditions of room are low, frost can form in its evaporator coil. This interferes with
proper operation.

—7—
2. CIRCUIT DIAGRAM
• MODEL : DH2510 A
LAMP,
NEON
TERMINAL
BLOCK
WIRING DIAGRAM 3854A20015B
CONTROL,
DEFROST
O.L.P.
SWITCH,
ROTARY
C
BR
BR
WH
BRBR YL
BR BR
6
41
BR
1
HUMIDISTAT
2BK
BK
BK
M
S
5
63
4
C
COMP.
BK(BR)WH(BL)
BL
YL
OR(COM)
RD(L)
BK(HI)
YL
OR
CAPACITOR
BL
RD(L)
BK(HI)
GR/YL
BL
N.O
N.C
MOTOR
SWITCH,
LAMP
Q'TY
PER SET
1
1
1
1
1
1
1
1
1
1
1
RE-
MARKS
S
S
S
S
S
S
S
S
S
S
S
LOCATION
NO.
1
2
3
4
5
6
7
8
9
10
11
DESCRIPTION
POWER CORD ASSEMBLY
SWITCH, ROTARY
MOTOR ASSEMBLY, SINGLE
P.T.C. ASSEMBLY
COMPRESSOR
O.L.P.
LAMP, NEON
CONTROL, DEFROST
HUMIDISTAT
SWITCH ASSEMBLY, MICRO
TERMINAL BLOCK
DH2510A
6411A20001K
6600A20001A
4681A20034B
6748C-0003D
5416A20002B
6750C-0009B
6912A30001D
6614A30001D
5216A20001A
6600A30003A
6640A40001A
PART NO.
※S: SERVICE PARTS A: ALTERNATE PARTS N: NOT SERVICE PARTS

—8—
• MODEL : DH4010A, DH5010A
LAMP,
NEON
TERMINAL
BLOCK
WIRING DIAGRAM 3854A20015A
CONTROL,
DEFROST O.L.P.
SWITCH,
ROTARY
C
BR
BR
WH
BRBR YL
BR BR
6
41
BR
1
HUMIDISTAT
2BK
RD
BK
M
S
C
COMP.
BK(BR)WH(BL)
BL
YL
OR(COM)
RD(L)
BK(HI)
YL
OR
CAPACITOR
BL
RD(L)
BK(HI)
GR/YL
BL
BK
RD
N.O
N.C MOTOR
SWITCH,
LAMP
Q'TY
PER SET
1
1
1
1
1
1
1
1
1
1 1 2
RE-
MARKS
S
S
S
S
S
S
S
S
S
S
LOCATION
NO.
1
2
3
4
5
6
7
8
9
10
DESCRIPTION
POWER CORD ASSEMBLY
SWITCH, ROTARY
MOTOR ASSEMBLY SINGLE
CAPACITOR
COMPRESSOR
O.L.P.
LAMP, NEON
CONTROL, DEFROST
HUMIDISTAT
SWITCH ASSEMBLY, MICRO
DH4010A DH5010A
6411A20001K
6600A20001A
4681A20034A
6120AR2194S
5416AR2179J
6750U-L039A
6912A30001D
6614A30001D
5216A20001A
6600A30003A
PART NO.
※S: SERVICE PARTS A: ALTERNATE PARTS N: NOT SERVICE PARTS

3.1 MECHANICAL PARTS
3.1.1 BUCKET AND AIR FILTER
1. Disconnect the power supply.
2. Turn the Humidity Control off.
3. Remove the bucket (See Figure 5)
4. Flex the filter at the lower right corner and take it
off. (See Figure 5)
3.1.2 FRONT GRILLE
1. Remove 2 screws which fasten the front grille.
2. By pushing the both sides of front grille, pull the
front grille forward and upward. (See Figure 6)
3.1.3. CONTROL BOX ASSY AND CABINET
1. Remove the Bucket, the Air filter and Front grille
according to the procedure above.
2. Remove 3 screws that fasten Control box
assy.(See Figure 7)
3. Remove 9 screws on all sides of the cabinet.
4. Lift the Cabinet from the base.
5. Unhook control box assy from two up and lower
hooks on the Housing assy like Figure 8.
—9—
3. DISASSEMBLY INSTRUCTIONS
1
2
Push
Push
Figure 5
Figure 6
Figure 7 Figure 8

3.2 CONTROL PARTS AND CYCLE PARTS
3.2.1 ROTARY SWITCH, HUMIDISAT AND NEON LAMP
1. Unfasten a screw located in the lower side of
control box assy(DH2510A) then stretch control box
like figure 9.
Remove each screw located in the lower side of
Control box assy and fastens Capacitor clamp then
stretch Control box assy like figure 9.
(DH5010A/DH4010A)
2. Disconnect housing and all leads of Rotary switch,
Humidistat and Neon lamp.
3. Remove 4 screws which fasten the Rotary switch
and Humidistat.
4. Pull the Neon lamp out.
3.2.2 CAPACITORS AND TERMINAL BLOCK
1. Remove each screw that fastens Capacitor and
Terminal block after control box assy is stretched
as like figure 9.
2. Disconnect all leads of Capacitor and Terminal
block then remove them from control box.
3.2.3 DEFROST CONTROL
1. Disconnect all leads of the Defrost control in the
Control Box.
2. Remove the defrost control from the Suction tube
assy.
3.2.4 MICRO SWITCH ASSY
1. Disconnect three leads connected in the Micro
switch assy.
2. Turn the nut left and take off the Micro switch assy
from the Housing assy.
3.2.5 POWER CORD ASSY
1. After the Control box assy opens, remove a screw
that fastens the earth wire of the Power cord assy.
2. Disconnect housing and all leads of Power cord
assy then remove it from the unit.
—10—
DH2510ADH5010A
DH4010A
Defrost
control
Figure 9
Figure 10
Figure 11
Figure 12