Dehumidifier
SERVICE MANUAL
MODELS: DH300EY5/DH305Y5/DH300MY5
LD40Y5/DH400MY5
DH404EY5/DH400EY5/LD40EY5
DH504ELY5/LD50ELY5
LD65ELY5
CAUTION
- BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
- ONLY FOR AUTHORIZED SERVICE.
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1. PREFACE
This Service Manual provides various service information, including the mechanical and electrical parts.
This dehumidifier was manufactured and assembled under the strict quality control procedures.
The refrigerant is charged at the factory. Be sure to read the safety precaution prior to servicing the unit.
1.1 SAFETY PRECAUTIONS
• Disconnect the power supply before servicing or replacing any component.
• Do not cut off the grounding prong or alter the plug in any manner.
1.2 FEATURES AND DIMENSIONS
1.2.1 FEATURES
• Quiet operation
• High efficiency
• Adjustable humidistat
• Automatic defrost
• Automatic shut-off
• Bucket-full indicator light
• Easy roll casters
• Removable & large capacity bucket.
• Washable air filter
• Two-speed fan
• Drain hose connection.
• Low temperature operation (DH504EL/LD50EL/LD65EL)
1.2.2 DIMENSIONS (mm/in)
5
3
385 (15 / )
340 (13 / )
32
8
AUTO RESTART
Continuous On.
HUMIDITY
CONTROL
BUCKET
FULL
4Hr. On/Off
2Hr. On/Off
High
Low
ENERGY STAR
FAN
SPEED
POWER
TIMER
HUMIDITY
SETTING
Figure 1
—3—
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1.3 MODEL NAMES
MODEL NAME
40
CAPACITY (Pints/24hrs)
30
50
65
DH305Y5, DH300MY5
DH300EY5
DH400MY5,LD40Y5
-
-
MECHANICAL TYPE
CONTROL
PANEL
DH404Y5
DH504ELY5
LD65ELY5
ELECTRONIC TYPE
DH400EY5,LD40EY5 LD50ELY5
1.4 SPECIFICATIONS
DH305Y5, DH300MY5 DH400MY5, LD40Y5
DH504ELY5*
LD50ELY5*
LD65ELY5*
MODELS
ITEMS
DH300EY5
DH404EY5
DH400EY5, LD40EY5
POWER SUPPLY(Phase,V,Hz)
INPUT(W)
RUNNING CURRENT(A)
ENERGY FACTOR(L/kw.h)
REFRIGERANT
1Ø, 115V,60Hz
580
5.7
480
4.8
1.23
560
5.4
1.75
850
8.3
1.50
1.36
R22
REFRIGERANT CHARGE, oz(g)
OPEN
3.53(100)
4.94(140)
7.93(225)
8.46(240)
33.8°F(1±0.5°C)
50°F(10±0.5°C)
THERMISTOR
CLOSE
SOLENOID VALVE*
Using Temp/Humid.:-4~122°F(-20~50°C)/95%RH
-
-
Rating:7W/90mA
COMPRESSOR MODEL No.
PROTECTOR
QS064CAB
QS075CBA
QA075CDB
QA114CBD
OVERLOAD PROTECTOR FOR COMPRESSOR
INTERNAL PROTECTOR(FUSE)FOR MOTOR
35µF, 270VAC
CAPACITOR
40µF, 270VAC
35µF, 270VAC
35µF, 270VAC
Shaded pole motor, 91W/1.8A,
Thermal cutoff:266°F/130°C
MOTOR ASSEMBLY,SINGLE
Shaded pole motor, 72W/1.4A, Thermal cutoff:266°F/130°C
SWITCH ASSEMBLY,MICRO
OUTSIDED MENSIONS
WxHxD,mm(in)
15A/250VAC
385X540X340(15 5/32 x 21 1/4 x 13 3/8)
NET WEIGHT,kg(lbs)
17.6(38.9)
17.6(38.9)
20.4(44.9)
22.2(48.9)
*NOTE:Specifications are subject to minor change without notice for further improvement.
—4—
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1.5 CONTROL TYPE
1.5.1 Mechanical type
Humidity Control
• When you first use the dehumidifier, turn the humidity
control to 5 or 6. If you still have moisture, turn the
humidity control to a higher setting.
5
6
4
MAX is the highest setting.
3
7
9
High
Low
• When excess moisture and dampness odors are
gone, adjust the control to a lower setting. Use the
dehumidifier as long as excess moisture is present.
2
8
Auto
Shut-Off
1
Fa n Sp e e d
Off
Max
Hu m id it y Co n t ro l
Figure 2
Fan Speed
Auto Shut-Off
• The fan control adjusts the fan speed.
Set the fan control to HIGH for maximum moisture
removal. When the humidity has been reduced and
quiet operation is preferred, set the fan control to
LOW.
• This light glows when the bucket is full, or when
the bucket is removed or not placed in the proper
position. In these cases the Water Level Control
Switch shuts off the dehumidifier.
• When the light glows, check the bucket condition.
1.5.2 Electronic type
Bucket Full Indicator
HUMIDITY
BUCKET
• This light glows when the water bucket is full and needs
to be emptied.
CONTROL
4hr. On/Off
2hr. On/Off
High
Low
FULL
AUTO RESTART
FAN
SPEED
POWER
TIMER
HUMIDITY
SETTING
Power
• Operation starts when this button is pressed and stops
when the button is pressed again.
Figure 3
Auto Restart
•
Once power is restored after a power outage, the unit
returns to its previous operation setting after a 2 minute
delay.
Fan Speed
• This controls the speed of the airflow.
• High: Fan speed is set to high.
• Low: Fan speed is set to low.
The fan runs immediately when the power is restored.
Humidity Control
• When Fan Speed button is pressed, the fan speed
• This button controls the humidity in the room.
mode is changed.
• Press
• Press
button to raise the humidity setting.
button to lower the humidity setting.
Timer
• Press this button to select type of operation.
• Select continuous On for uninterrupted operation.
• Select either 2 or 4 hr. On/Off for cycled operation:
The unit will operate for 2 or 4 hours, and then shut
off completely for 2 or 4 hours.
The cycle repeats until you change the setting.
• When Timer button is pressed, the Timer indicator
lights shift as follow from 2hr.On/Off to 4hr.On/Off.
• The humidity setting can be set to a permanent "On"
setting or to a specific humidity setting between 35% and
70% in 5% increments.
• "On" setting: Dehumidifier runs continuously regardless
of humidity condition.
• 35% - 70% setting: Dehumidifier runs on and off
according to surrounding humidity conditions.
—5—
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1.6 HOW TO OPERATE DEHUMIDIFIER
1.6.1 HOW DOES THE DEHUMIDIFIER WORK?
Moist, humid air is drawn over a cold refrigerated
dehumidifying coil. Moisture in the air condenses on this
coil and drains into a bucket (or through the bucket into a
hose and drain).
Motor
Condenser
Evaporator
Fan
Dry
Air Out
Humid
Air In
Dry, clean air is drawn over the condenser where it is
actually heated several degrees and discharged out the
rear grill into the room. (See Figure 4)
Rear Grille
I It is normal for the surrounding air to become
Bucket
slightly warmer as the dehumidifier operates.
This warming effect further reduces the relative humidity
of the surrounding air.
Compressor
Figure 4
Side View
1.6.2 LOCATION FOR THE DEHUMIDIFIER
Allow at least 12 inches of space on all sides of the
unit for good air circulation. (See Figure 5)
I The dehumidifier must be operated in an enclosed
area to be most effective.
12"
12"
I Close all doors, windows and other outside
openings to the room.
Place the dehumidifier in a location that does not
restrict air flow into the front grille or out the rear grille.
The operation of dehumidifier in a basement will have
little or no effect in drying an adjacent enclosed
storage area, such as a closet, unless there is
adequate circulation of air in and out of the area.
Figure 5
1.6.3 MICRO SWITCH
The micro switch assembly, which is located on the drain pan of inside unit, automatically shuts off the dehumidifier when the
bucket is full (note, the Auto Shut Off lights, to indicate bucket must be emptied). The bucket replaces in its place, the unit again
turns itself on.
1.6.4 AUTO DEFROST
When frost builds up on the cooling coils, the unit will automatically cycle off until the frost disappears. The fan continues to run.
NOTE: The unit will not operate satisfactorily if the room temperature is below 65˚F(18˚C). If the dehumidifier is
operated in low temperature conditions frost can form in the evaporator coil and the unit will cycle ON/OFF
repeatedly. In this case, please check your room temperature conditions and stop the unit.
NOTE: The low temperature operation feature in the DH504EL, DH50EL and DH65EL models will continuously cycle up to
a temperature of 42°F(6°C).
—6—
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1.6.5 HUMIDITY CONTROLLER
1.6.5.1 Mechanical Type
5(42%)
40%
42% R.H
4(50%)
6(35%)
The humidity control can be set anywhere between Off and
Max for normal operation.
3(60%)
7(30%)
If you need more dehumidification, turn the Humidity Control
toward Max. If you need less dehumidification, turn the
Humidity Control toward Off.
2(70%)
8(25%)
The relative humidity range is from 20% to 80%. (See
Figure 6)
9(20%)
Turn the Humidity Control to Off to stop the unit manually.
1(80%)
Off
Max.
DEAD DIAL
Figure 6
1.6.5.2 Electronic Type
The humidity control can be set 'on' or 35%-70%
RH(Relative Humidity) for normal operation. (See Figure 7)
If you need drier air, press the Humidity Control button.
If you need moister air, press the Humidity Control
button.
HUMIDITY
CONTROL
HUMIDITY
SETTING
Press the Power button to stop the unit manually.
Figure 7
—7—
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2. CIRCUIT DIAGRAM
• MODEL : DH305Y5, DH300MY5
PART NO.
DH305Y5,DH300MY5
6411A20001Z
6600FX5001G
4681A20040Q
0CZZA20005J
2520UCBS005
6750U-L082A
6871A20289B
6877A30013L
6601A30001B
6600A30003C
6871A10142A
Q'TY
PER SET MARKS
RE-
DESCRIPTION
NO.
1
1
1
1
1
1
1
1
1
1
1
S
S
S
S
S
S
S
S
S
S
S
POWER CORD ASSEMBLY
SWITCH, ROCKER
1
2
MOTOR ASSEMBLY
3
CAPACITOR
4
COMPRESSOR, SET
OLP
5
6
PWB(PCB) ASSEMBLY, DISPLAY
SENSOR ASSEMBLY
SWITCH ASSEMBLY, ROTARY
SWITCH ASSEMBLY, MICRO
PWB(PCB) ASSEMBLY, MAIN
7
8
9
10
11
S: SERVICE PARTS
A: ALTERNATE PARTS
—8—
N: NOT SERVICE PARTS
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• MODEL : DH300EY5
PART NO.
Q'TY
PER SET MARKS
RE-
DESCRIPTION
NO.
DH300EY5
6411A20001Z
4681A20040Q
0CZZA20005J
2520UCBS005
6750U-L082A
6871A20482A
6877A30013L
6600A30003C
6871A10141A
1
1
1
1
1
1
1
1
1
S
S
S
S
S
S
S
S
S
1
2
3
4
5
6
7
8
9
POWER CORD ASSEMBLY
MOTOR ASSEMBLY
CAPACITOR
COMPRESSOR, SET
OLP
PWB(PCB) ASSEMBLY, DISPLAY
SENSOR ASSEMBLY
SWITCH ASSEMBLY, MICRO
PWB(PCB) ASSEMBLY, MAIN
S: SERVICE PARTS
A: ALTERNATE PARTS
N: NOT SERVICE PARTS
—9—
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• MODEL : DH400MY5/LD40Y5
PART NO.
DH400MY5/LD40Y5
6411A20001Z
6600FX5001G
4681A20040J
0CZZA20005N
2520UCAS003
6750U-L103A
6871A20289B
6877A30013M
6601A30001C
6600A30003C
6871A10142A
Q'TY
PER SET MARKS
RE-
DESCRIPTION
NO.
1
1
1
1
1
1
1
1
1
1
1
S
S
S
S
S
S
S
S
S
S
S
POWER CORD ASSEMBLY
SWITCH, ROCKER
1
2
MOTOR ASSEMBLY
3
CAPACITOR
4
COMPRESSOR (ROTARY), SET
OLP (ASSEMBLY)
5
6
PWB(PCB) ASSEMBLY, DISPLAY
SENSOR ASSEMBLY
7
8
SWITCH ASSEMBLY, ROTARY
SWITCH ASSEMBLY, MICRO
PWB(PCB) ASSEMBLY, MAIN
9
10
11
S: SERVICE PARTS
A: ALTERNATE PARTS
N: NOT SERVICE PARTS
—10—
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• MODEL : DH404EY5/DH400EY5/LD40EY5
PART NO.
Q'TY
PER SET
RE-
MARKS
DESCRIPTION
NO.
DH404EY5/DH400EY5
LD40EY5
1
2
3
4
5
6
7
8
9
6411A20001Z
4681A20040J
0CZZA20005N
2520UCAS003
6750U-L103A
6871A20482A
6877A30013M
6600A30003C
6871A10141A
POWER CORD ASSEMBLY
MOTOR ASSEMBLY
CAPACITOR
1
1
1
1
1
1
1
1
1
S
S
S
S
S
S
S
S
S
COMPRESSOR,SET
OLP
PWB(PCB) ASSEMBLY,DISPLAY
SENSOR ASSEMBLY
SWITCH ASSEMBLY,MICRO
PWB(PCB) ASSEMBLY,MAIN
S: SERVICE PARTS
A: ALTERNATE PARTS
N: NOT SERVICE PARTS
—11—
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• MODEL : DH504ELY5/LD50ELY5/LD65ELY5
PART NO.
DH504ELY5/LD50ELY5
6411A20001Z
Q'TY
PER SET MARKS
RE-
DESCRIPTION
NO.
LD65ELY5
1
1
1
1
1
1
1
1
1
1
S
S
S
S
S
S
S
S
S
S
1
2
POWER CORD ASSEMBLY
MOTOR ASSEMBLY
4681A20040J
0CZZA20005J
2520UCBA010
6750U-L001A
4681A20040K
0CZZA20005J
2520UCBA007
6750U-L048A
3
CAPACITOR
4
COMPRESSOR (ROTARY), SET
OLP.
5
6871A20482A
6
PWB(PCB) ASSEMBLY, DISPLAY
SENSOR ASSEMBLY
6877A30013L
6600A30003C
6871A10141C
6421A20003K
7
8
SWITCH ASSEMBLY, MICRO
PWB(PCB) ASSEMBLY, MAIN
COIL ASSEMBLY, SOLENOID
9
10
S: SERVICE PARTS
A: ALTERNATE PARTS
N: NOT SERVICE PARTS
—12—
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3. DISASSEMBLY INSTRUCTIONS
3.1 MECHANICAL PARTS
3.1.1 BUCKET AND AIR FILTER
1. Turn the Humidity Control off(Mechanical type) or
press the power button off. (Electronic type)
2. Disconnect the power supply.
3. Remove the bucket. (See Figure 9)
4. Pull out the air filter.
(See Figure 10)
Figure 9
Figure 10
3.1.2 FRONT CASE AND REAR GRILLE
1. Remove 2 screws which fasten the front grille.
2. Pull the front grille forward and upward.
(See Figure 11)
3. Remove 6 screws that secure the rear grille.
4. Remove the rear grille. (See Figure 12)
Figure 11
Figure 12
3.1.3. CABINET AND CONTROL BOX
1. Remove the Bucket, the Air filter and Front grille
according to the procedure above.
2. Remove 1 screws that fasten Control box.
(See Figure 13)
3. Remove 8 screws on all sides of the cabinet.
4. Lift the Cabinet from the base.(See Figure 13)
5. Remove a screw fasten the earth wire on the inside
of control box.
6. Remove 1 screw that fasten control box and
unhook control box from hook on the shroud.
(See Figure 14)
Figure 13
Figure 14
—13—
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3.2 CONTROL PARTS
3.2.1 POWER CORD ASSEMBLY
1. After opening the control box, remove the screw
that holds the ground wire. (See Figure 15)
2. Disconnect the remaining leads of the power cord
from the PWB(PCB) ASSEMBLY, MAIN, then
remove it from the control box.
Figure 15
3.2.2 SENSOR ASSEMBLY
1. Disconnect the sensor assembly from the
PWB(PCB) ASSEMBLY, MAIN.
2. Remove the screw which fastens the humidity
sensor. (See Figure 16)
3. Remove the thermistor from the holder.
(See Figure 16)
4. Disconnect the switch wires from the micro switch
assembly. (See Figure 16)
Figure 16
3.2.3 PWB(PCB) ASSEMBLY, MAIN
1. Disconnect all leads of the motor and the compressor
from PWB(PCB) ASSEMBLY, MAIN.
2. Remove the screw which fastens the PWB(PCB)
ASSEMBLY, MAIN and pull it out after unhooking
from 2 rectangular holes of the control box (lower).
(See Figure 17)
3.2.4 CAPACITOR
1. Remove the screw that fastens the capacitor.
(See Figure 17)
2. Disconnect all leads from the capacitor and then
remove it from control box.
Figure 17
3.2.5 MICRO SWITCH ASSEMBLY
1. Turn the nut counterclockwise and pull out the
micro switch from the drain pan. (See Figure 18)
Figure 18
—14—
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3.2.6 COIL ASSEMBLY, SOLENOID
(DH504ELY5, LD50ELY5, LD65ELY5)
1. Disconnect the housing of the COIL ASSEMBLY,
SOLENOID from the PCB(PWB) ASSEMBLY,
MAIN.
2. Remove the screw that fastens the COIL
ASSEMBLY, SOLENOID. (See Figure 19)
3. Pull it out upwards.
Figure 19
3.2.7 CONTROL PANEL
3.2.6.1 CONTROL PANEL - Mechanical Type
(DH305Y5/DH300MY5/DH400MY5/LD40Y5)
1. Disconnect housing and all leads of the rocker
switch, SWITCH ASSEMBLY, ROTARY and
PWB(PCB) ASSEMBLY, DISPLAY from PWB(PCB)
ASSEMBLY, MAIN (3.1.3)
2. Pull out the knob assembly.
3. Remove the nut which fastens the SWITCH
ASSEMBLY, ROTARY.
4. Remove the knob of the rotary switch by pulling it
upward.
5. Pull out the rocker switch by pushing the hooks on
the both sides of rocker switch.
6. Pull out the PWB(PCB) ASSEMBLY, DISPLAY after
turning over both hooks of the display cover.
Figure 20
3.2.6.2 CONTROL PANEL - Electronic Type
(DH300EY5/DH404EY5/DH400EY5/LD40EY5/DH504ELY5/
LD50ELY5/LD65ELY5)
1. Disconnect the housing of the PWB(PCB)
ASSEMBLY, DISPLAY from PWB(PCB)
ASSEMBLY, MAIN (3.1.3).
2. Remove 6 screws that secure the PWB(PCB)
ASSEMBLY, DISPLAY to the display cover.
Figure 21
—15—
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3.2.8 FAN AND MOTOR
1. Turn the nut left and full out the Fan by hands
carefully.
2. Remove 2 screws that fasten Heat Exchange.
3. Lift the H/E and open the H/E around 45 degree
clockwise carefully. (See Figure 22)
4. Unfasten 3 screws that secure the Motor and earth
wire. (See Figure 23)
5. Remove the Motor.
Figure 22
Figure 23
3.2.9 SHROUD AND DRAIN PAN
1. Discharge the refrigerant by using a refrigerant
Recovery System.
2. After purging the unit completely, unbrace the
Discharge and the Suction tube connected
compressor carefully.
3. Remove 2 screws that fasten the H/E.
4. Unfasten 2 screws that secure the shroud on the
sides and then lift shroud from the drain pan.
(See Figure 24)
Figure 24
5. Unfasten 2 screws that secure the drain pan to
base pan. (See Figure 25)
6. Pull the drain pan backward then take it up from the
base. (See Figure 25)
Figure 25
—16—
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3.3 REFRIGERATING CYCLE
3.3.1 CONDENSER, EVAPORATOR AND
CAPILLARY TUBE
1. Remove the insulation on the Heater/Evaporator
(H/E) assembly
2. Pierce the pinch-off tube to discharge the
refrigerant, using a refrigerant recovery system.
3. After discharging the refrigerant completely,
remove 2 screws between the housing assembly
and the H/E. (See Figure 26)
4. Lift the H/E and open the H/E around 45 degree
counterclockwise carefully.
5. Unbraze each of interconnecting tubes of the
evaporator and condenser carefully.
Figure 26
Figure 27
6. Remove the H/E assembly from the orifice.
(See Figure 27)
7. Unbraze the capillary tube at the connections of the
condenser and evaporator. (See Figure 28)
8. Remove 4 screws between the condenser and
evaporator. (See Figure 28)
Figure 28
Using Rotary
Compressor models
3.3.2 COMPRESSOR
1. Discharge the refrigerant by using a refrigerant
Recovery System.
2. After purging the unit completely, unbraze the
suction and discharge tubes at the compressor
connections.
3. Remove the nuts and washers which fasten the
compressor. (See Figure 29)
4. Remove the compressor. (See Figure 29)
Figure 29
—17—
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3.4 HOW TO REPLACE THE REFRIGERATION SYSTEM
1. When replacing a refrigeration component, be sure
to discharge the refrigerant system by using a
refrigerant recovery system.
2. After discharging the unit completely, remove the
desired component, and unbraze the pinch-off
tubes.
7. Recharge as follows :
1) Refrigeration cycle systems are charged from the
High-side. If the total charge cannot be put
in the High-side, the balance will be put in the
suction line through the access valve which you
installed as the system was opened.
2) Connect the charging cylinder as shown in Figure
31B.
3. Solder service valves into the pinch-off tube ports,
leaving the valves open.
With valve C open, discharge the hose at the
manifold connection.
3) Open valve A and allow the proper charge to
enter the system. Valve B is still closed.
4) If more charge is required, the high-side will not
take it. Close valve A.
5) With the unit running, open valve B and add the
balance of the charge.
a. Do not add the liquid refrigerant to the Low-
side.
4. Solder the pinch-off tubes with service valves.
5. After doing the above procedures, the valve must
be closed and left in place on the system for any
subsequent procedures.
6. Evacuate as follows.
1) Connect the vacuum pump, as illustrated in
Figure 31A.
2) Start the vacuum pump, slowly open manifold
valves A and B two full turns counterclockwise
and leave the valves open.
The vacuum pump is now pulling through valves
A and B to valve C by means of the manifold
and entire system.
b. Watch the Low-side gauge; allow pressure to
rise to 30 lbs.
c. Turn off valve B and allow pressure to drop.
d. Repeat steps B and C until the balance of the
charge is in the system.
CAUTION
If high vacuum equipment is used, just crack
valves A and B for a few minutes, then open
slowly with the two full turns counterclockwise.
This will keep oil from foaming and being drawn
into the vacuum pump.
6) When satisfied the unit is operating correctly,
use the pinch-off tool with the unit still running
and clamp on to the pinch-off tube. Using a tube
cutter, cut the pinch-off tube about 2 inches from
the pinch-off tool. Use sil-fos solder and solder
pinch-off tube closed. Turn off the unit, allow it to
set for a while, and then test the leakage of the
pinch-off connection.
3) Operate the vacuum pump for 20 to 30 minutes,
until 600 microns of vacuum are obtained. Close
valves A and B, and observe vacuum gauge for
a few minutes. A rise in pressure would
indicate a possible leak or moisture remaining in
the system. With valves A and B closed, stop
the vacuum pump.
4) Remove the hose from the vacuum pump and
place it on the charging cylinder. See Figure 31B.
Open valve C.
Discharge the line at the manifold connection.
5) The system is now ready for final charging.
—18—
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Equipment needed: Vacuum pump, charging cylinder, manifold gauge, brazing equipment. pinch-off tool capable
of making a vapor-proof seal, leak detector, tubing cutter, hand tools to remove components, service valve.
EVAPORATOR ASSEMBLY
(LOW PRESSURE SIDE)
CONDENSER ASSEMBLY
(HIGH PRESSURE SIDE)
COMPOUND GAUGE
MANIFOLD
GAUGE
B
A
CAPILLARY
TUBE
SEE INSETS
BELOW
COMPRESSOR
LOW HI
A
B
A
B
EXTERNAL
VACUUM PUMP
CHARGING
CYLINDER
C
Figure 31B-Charging
Figure 31A-Pulling Vacuum
—19—
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4. TROUBLESHOOTING GUIDE
CONDITION
CAUSE
REMEDY
1. Dehumidifier does not start. (Both
compressor and fan motor do not
operate.)
No power
C
heck power supply at outlet.
Correct if none.
Poor plug contact at outlet.
Bucket is full.
Install plug properly or replace it.
If Auto Shut Off lights, empty the bucket
and replace properly.
Humidity control is at Off position
Wire disconnected or loose
Turn the humidity control switch toward
Max.
Connect wire. Refer to wiring diagram for
terminal identification. Repair or replace
loose terminal.
Capacitor.
Test capacitor.
(Discharge capacitor before testing.)
Replace if not within ±10% of
manufacturer's rating. Replace if shorted,
open, or damaged.
2. Motor runs but compressor does not
run.
Voltage (115V ± 10%)
Wiring
It must be between 103.5V and 126.5V. If
not within limits, call an electrician
Check the wire connections; If loose,
repair or replace the terminal. If the wires
are disconnected, refer to wiring diagram
for identification, and replace the wires.
Check the wire connections; If not
according to the wiring diagram, correct
the connections.
Rotary switch
Defrost control
Check for continuity, refer to the wiring
diagram for terminal identification. Replace
the switch if the circuit is open.
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.
Capacitor
Check the capacitor.
(Discharge capacitor before servicing.)
Replace if not within ±10% of
manufacturer's rating. Replace if shorted,
open, or damaged.
Compressor
Check the compressor for open circuit or
ground. If open or grounded, replace the
compressor.
Overload protector (OLP)
Check the compressor OLP if externally
mounted. Replace if open. (If the
compressor temperature is high, remove
OLP, cool, and retest.)
Defrost control is defective.
Low relative humidity
Poor air circulation
3. Does not defrost control.
Check defrost control, replace it.
Turn dehumidifier off.
4. Insufficient dehumidification
Move dehumidifier to obtain free and
unobstructed air circulation.
H/E clogged with dust and dirt
Air filter is dirty.
Clean evaporator and/or condenser assembly
Clean it.
Motor is not operating.
Check Motor, repair or replace it.
—20—
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CONDITION
CAUSE
REMEDY
5. Noisy operating
Fan
If cracked, out of balance, or partially
missing, replace it
Loose foreign material inside the housing.
Tube hits frame.
Remove it.
Adjust tubing routine carefully.
Check Motor Mount. If loose, tighten it.
Replace compressor.
Tighten them.
Fan blade hits frame
Internal compressor noise.
Loose set screws
Worn bearings of Motor Assembly
If knocking sounds continue when running
or loose, replace the motor. If the motor
hums or noise appears to be internal while
running, replace motor assembly.
The bucket is not installed properly.
The bucket should be properly positioned
on the hangers of the drain pan.
6. Water drips
Connection may be loose.
Leak in bucket
Check connection and repair.
Replace bucket.
Water drips when bucket removed for
emptying.
Before removing bucket, the unit should
be turned off.
Bucket overflows.
Check micro switch and float.
7. Compressor cycles on overload
protector. (OLP)
High or low line voltage. (115V ± 10%)
Check line voltage. It must be between
103.5V and 126.5V volts.
If intermittent, provide new supply.
Poor air circulation.
Move dehumidifier for free and
unobstructed air flow.
Heat Exchange clogged with dust or dirt.
Motor
Clean dust or dirt on the Heat Exchange.
If not running, determine the cause.
Replace if required.
Short circuit or ground in electrical circuit
Unit pressures not equalized
Check electrical circuit. Repair.
Allow 2 or 3 minutes for pressure to
equalize before starting compressor.
Capacitor
Wiring
Test the capacitor.
Check the terminals. If loose, repair or
replace.
Refrigeration system
Stuck compressor
Check the system for a restriction.
Check compressor, replace compressor
Overload protector (OLP)
Check OLP, if externally mounted.
Replace if open. (If the compressor
temperature is high, remove the OLP,
cool, and retest.)
—21—
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5. EXPLODED VIEWS
• MODEL: DH305Y5/DH300MY5
W0CZZ-2
149980
349600
554030
354210
268711-2
359012
435300
264110
249950
346811
165010
131400
135312
266002
238310
149410
A
4
S
u
t
h
3
u
o
5
t
-
O
f
f
2
6
1
7
O
f
H
f
u
8
m
i
d
i
9
t
268711-1
y
M
a
C
o
x
n
H
ig
t
r
h
o
l
F
a
n
S
L
o
p
w
e
e
d
436500
266003
352113
235512
35211A
152302
266010
552111
752140
330870
130410
567502
554160
144410
148391
550140
—22—
Download from Www.Somanuals.com. All Manuals Search And Download.
• MODEL: DH300EY5
W0CZZ-2
149980
349600
554030
354210
268711-2
359012
435300
264110
249950
346811
165010
131400
135312
238310
235512
268711-1
436500
352113
35211A
152302
266010
552111
752140
330870
130410
567502
554160
144410
148391
550140
—23—
Download from Www.Somanuals.com. All Manuals Search And Download.
• MODEL: DH400MY5/LD40Y5
149980
W0CZZ-2
349600
554030
354210
359012
435300
268711-2
249950
346811
264110
131400
165010
135312
266002
238310
149410
268711-1
436500
266003
352113
235512
35211A
152302
266010
552111
752140
330870
130410
567502
554160
550140
144410
148391
—24—
Download from Www.Somanuals.com. All Manuals Search And Download.
• MODEL: DH404EY5/DH400EY5/LD40EY5
149980
W0CZZ-2
349600
554030
354210
359012
435300
268711-2
249950
346811
264110
131400
165010
135312
238310
235512
268711-1
436500
352113
35211A
152302
266010
552111
752140
330870
130410
567502
554160
144410
148391
550140
—25—
Download from Www.Somanuals.com. All Manuals Search And Download.
• MODEL: DH504ELY5/LD50ELY5
149980
W0CZZ-2
349600
554030
354210
359012
435300
268711-2
346811
249950
264110
131400
165010
135312
238310
235512
268711-1
436500
552204
35211A
152302
266010
352113
752140
330870
130410
567502
554160
144410
550140
148391
—26—
Download from Www.Somanuals.com. All Manuals Search And Download.
• MODEL: LD65ELY5
149980
W0CZZ-2
349600
554030
354210
359012
435300
268711-2
346811
249950
264110
131400
165010
135312
238310
235512
268711-1
436500
552204
35211A
152302
266010
352113
752140
330870
130410
567502
554160
144410
550140
148391
—27—
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6. REPLACEMENT PARTS LIST
• MODEL: DH305Y5/DH300MY5
PART NO.
LOCATION
REMARK
DESCRIPTION
NO.
DH305Y5/DH300MY5
130410
131400
135312
330870
148391
149410
152302
165010
249950
264110
266002
266003
266010
BASE ASSEMBLY
3041A10042A
3090A10042A
3531A10285C
3087A10019C
4839A10002A
4941A30019B
5230A20040A
6877A30013L
4995A20359U
6411A20001Z
6600FX5001G
6601A30001B
6600A30003C
6871A20289B
6871A10142A
4681A20040Q
5211A11057A
5211A11056A
5211A31023B
5421A10009P
5403A10008B
0CZZA20005J
2520UCBS005
5900A20007A
6750U-L082A
4960A20009B
3650A20004A
4441A30001B
3831A20079M
3551A20122A
5214A20027B
4830A30005A
4998A10034A
3530A10193B
CABINET
FRONT GRILLE,ASSEMBLY
DRAIN PAN ASSEMBLY
TANK ASSEMBLY,BUCKET
KNOB ASSEMBLY
FILTER(MECH),AIR
SENSOR ASEMBLY
CONTROL BOX,ASSEMBLY
POWER CORD,ASSEMBLY
SWITCH,ROCKER
SWITCH ASSEMBLY,ROTARY
SWITCH ASSEMBLY,MICRO
268711-1 PWB(PCB)ASSEMBLY,DISPLAY
268711-2 PWB(PCB)ASSEMBLY,MAIN
346811
35211A
352113
552111
354210
554030
MOTOR ASSEMBLY
TUBE ASSEMBLY,SUCTION
TUBE ASSEMBLY,DISCHARGE
TUBE ASSEMBLY,CAPILLARY
EVAPORATOR,ASSEMBLY
CONDENSOR ASSEMBLY
W0CZZ-2 CAPACITOR
554160
359012
567502
349600
436500
144410
238310
235512
752140
550140
149980
435300
COMPRESSOR ,SET
FAN,TURBO
OLP
MOUNT,MOTOR
HANDLE
CASTER ASSEMBLY,ROLLER
ESCUTCHEON
COVER ASSEMBLY,DISPLAY
HOSE,CONNECTOR
BUSHING
SHROUD
REAR GRILLE
—28—
Download from Www.Somanuals.com. All Manuals Search And Download.
• MODEL: DH300EY5
PART NO.
DH300EY5
LOCATION
REMARK
DESCRIPTION
NO.
130410
131400
135312
330870
148391
152302
165010
249950
264110
266010
BASE ASSEMBLY
3041A10042A
3090A10042A
3531A10254F
3087A10019C
4839A10002A
5230A20040A
6877A30013L
4995A20359S
6411A20001Z
6600A30003C
6871A20482A
6871A10141A
4681A20040Q
5211A11057A
5211A11056A
5211A31023B
5421A10009P
5403A10008B
5851A30001A
2520UCBS005
5900A20007A
6750U-L082A
4960A20009B
0CZZA20005J
3650A20004A
4441A30001B
3831A20079L
3551A20109B
5214A20027B
4830A30005A
4998A10034A
3530A10193B
CABINET
FRONT GRILLE,ASSEMBLY
DRAIN PAN ASSEMBLY
TANK ASSEMBLY,BUCKET
FILTER(MECH),AIR
SENSOR ASEMBLY
CONTROL BOX,ASSEMBLY
POWER CORD,ASSEMBLY
SWITCH ASSEMBLY,MICRO
268711-1 PWB(PCB)ASSEMBLY,DISPLAY
268711-2 PWB(PCB)ASSEMBLY,MAIN
346811
35211A
352113
552111
354210
554030
558511
554160
359012
567502
349600
W0CZZ-2
436500
144410
238310
235512
752140
550140
149980
435300
MOTOR ASSEMBLY
TUBE ASSEMBLY,SUCTION
TUBE ASSEMBLY,DISCHARGE
TUBE ASSEMBLY,CAPILLARY
EVAPORATOR,ASSEMBLY
CONDENSOR ASSEMBLY
DRIER ASSEMBLY
COMPRESSOR ,SET
FAN,TURBO
OLP
MOUNT,MOTOR
CAPACITOR
HANDLE
CASTER ASSEMBLY,ROLLER
ESCUTCHEON
COVER ASSEMBLY,DISPLAY
HOSE,CONNECTOR
BUSHING
SHROUD
REAR GRILLE
—23—
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• MODEL: DH400MY5/LD40Y5
PART NO.
LOCATION
DESCRIPTION
NO.
REMARK
DH400MY5/LD40Y5
130410
131400
135312
330870
148391
149410
152302
165010
BASE ASSEMBLY
3041A10042B
3090A10042A
3531A10285E / 3531A20285B
3087A10019C
4839A10002A
4941A30019B
5230A20040A
6877A30013M
0CZZA20005N
4995A20359H
6411A20001Z
6600FX5001G
6601A30001B
6600A30003C
6871A20289B
6871A10142A
4681A20040J
5211A11057B
5211A10463A
5211A31003B
5421A10009N
5403A10008M
2520UCAS003
5900A20007A
6750U-L103A
4960A20009B
3650A20004A
4441A30001B
3831A20079E/K
3551A20122A
5214A20027B
4830A30005A
4998A10034A
3530A10193B
CABINET
FRONT GRILLE,ASSEMBLY
DRAIN PAN ASSEMBLY
TANK ASSEMBLY,BUCKET
KNOB ASSEMBLY
"B:LG/E:Goldstar"
FILTER(MECH),AIR
SENSOR ASEMBLY
W0CZZ-2 CAPACITOR
249950
264110
266002
266003
266010
CONTROL BOX,ASSEMBLY
POWER CORD,ASSEMBLY
SWITCH,ROCKER
SWITCH ASSEMBLY,ROTARY
SWITCH ASSEMBLY,MICRO
268711-1 PWB(PCB)ASSEMBLY,DISPLAY
268711-2 PWB(PCB)ASSEMBLY,MAIN
346811
35211A
352113
552111
354210
554030
554160
359012
567502
349600
436500
144410
238310
235512
752140
550140
149980
435300
MOTOR ASSEMBLY
TUBE ASSEMBLY,SUCTION
TUBE ASSEMBLY,DISCHARGE
TUBE ASSEMBLY,CAPILLARY
EVAPORATOR,ASSEMBLY
CONDENSOR ASSEMBLY
COMPRESSOR ,SET
FAN,TURBO
OLP
MOUNT,MOTOR
HANDLE
CASTER ASSEMBLY,ROLLER
ESCUTCHEON
"E:Goldstar/K:LG"
COVER ASSEMBLY,DISPLAY
HOSE,CONNECTOR
BUSHING
SHROUD
REAR GRILLE
—30—
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• MODEL: DH404E Y5/DH400EY5/LD40EY5
PART NO.
LOCATION
REMARK
DESCRIPTION
NO.
DH404EY5/DH400EY5/LD40EY5
130410
131400
135312
330870
148391
152302
165010
BASE ASSEMBLY
3041A10042B
3090A10042A
3531A10254A/E
3087A10019C
4839A10002A
5230A20040A
6877A30013M
0CZZA20005N
4995A20359F
6411A20001Z
6600A30003C
6871A20482A
6871A10141A
4681A20040J
5211A11057B
5211A10463A
5211A31003B
5421A10009N
5403A10008M
2520UCAS003
5900A20007A
6750U-L103A
4960A20009B
3650A20004A
4441A30001B
3831A20079A/J
3551A20109B
5214A20027B
4830A30005A
4998A10034Y
3530A10193B
CABINET
FRONT GRILLE,ASSEMBLY
DRAIN PAN ASSEMBLY
TANK ASSEMBLY,BUCKET
FILTER(MECH),AIR
SENSOR ASEMBLY
"A:Goldstar/E:LG"
W0CZZ-2 CAPACITOR
249950
264110
266010
CONTROL BOX,ASSEMBLY
POWER CORD,ASSEMBLY
SWITCH ASSEMBLY,MICRO
268711-1 PWB(PCB)ASSEMBLY,DISPLAY
268711-2 PWB(PCB)ASSEMBLY,MAIN
346811
35211A
352113
552111
354210
554030
554160
359012
567502
349600
436500
144410
238310
235512
752140
550140
149980
435300
MOTOR ASSEMBLY
TUBE ASSEMBLY,SUCTION
TUBE ASSEMBLY,DISCHARGE
TUBE ASSEMBLY,CAPILLARY
EVAPORATOR,ASSEMBLY
CONDENSOR ASSEMBLY
COMPRESSOR ,SET
FAN,TURBO
OLP
MOUNT,MOTOR
HANDLE
CASTER ASSEMBLY,ROLLER
ESCUTCHEON
"A:Goldstar/J:LG"
COVER ASSEMBLY,DISPLAY
HOSE,CONNECTOR
BUSHING
SHROUD
REAR GRILLE
—31—
Download from Www.Somanuals.com. All Manuals Search And Download.
• MODEL: DH504ELY5/LD50ELY5
PART NO.
LOCATION
DESCRIPTION
NO.
REMARK
DH504ELY5/LD50ELY5
130410
131400
135312
330870
148391
152302
165010
BASE ASSEMBLY
3041A10042A
3090A10042A
3531A10254A/E
3087A10019C
4839A10002A
5230A20040A
6877A30013L
0CZZA20005J
4995A20359T
6411A20001Z
6600A30003C
6871A20482A
6871A10141C
4681A20040J
5211A11054A
5211A11058A
6421A20003K
5421A10009Q
5403A10008A
2520UCBA010
5900A20007A
6750U-L001A
4960A20009B
3650A20004A
4441A30001B
3831A20079A/J
3551A20109B
5214A20027B
4830A30005A
4998A10034A
3530A10193B
CABINET
FRONT GRILLE,ASSEMBLY
DRAIN PAN ASSEMBLY
TANK ASSEMBLY,BUCKET
FILTER(MECH),AIR
SENSOR ASEMBLY
"A:Goldstar/E:LG"
W0CZZ-2 CAPACITOR
249950
264110
266010
CONTROL BOX,ASSEMBLY
POWER CORD,ASSEMBLY
SWITCH ASSEMBLY,MICRO
268711-1 PWB(PCB)ASSEMBLY,DISPLAY
268711-2 PWB(PCB)ASSEMBLY,MAIN
346811
35211A
352113
552204
354210
554030
554160
359012
567502
349600
436500
144410
238310
235512
752140
550140
149980
435300
MOTOR ASSEMBLY
TUBE ASSEMBLY,SUCTION
TUBE ASSEMBLY,DISCHARGE
COIL ASSEMBLY,SOLENOID
EVAPORATOR,ASSEMBLY
CONDENSOR ASSEMBLY
COMPRESSOR ,SET
FAN,TURBO
OLP
MOUNT,MOTOR
HANDLE
CASTER ASSEMBLY,ROLLER
ESCUTCHEON
"A:Goldstar/J:LG"
COVER ASSEMBLY,DISPLAY
HOSE,CONNECTOR
BUSHING
SHROUD
REAR GRILLE
—32—
Download from Www.Somanuals.com. All Manuals Search And Download.
• MODEL: LD65ELY5
PART NO.
LD65ELY5
LOCATION
REMARK
DESCRIPTION
NO.
130410
131400
135312
330870
148391
152302
165010
BASE ASSEMBLY
3041A10042A
3090A10042A
3531A10254E
3087A10019C
4839A10002A
5230A20040A
6877A30013L
0CZZA20005J
4995A20359L
6411A20001Z
6600A30003C
6871A20482A
6871A10141C
4681A20040K
5211A10454B
5211A10544A
6421A20003K
5421A10009R
5403A10008L
2520UCBA007
5900A20007A
6750U-L048A
4960A20009B
3650A20004A
4441A30001B
3831A20079J
3551A20109B
5214A20027B
4830A30005A
4998A10034A
3530A10193B
CABINET
FRONT GRILLE,ASSEMBLY
DRAIN PAN ASSEMBLY
TANK ASSEMBLY,BUCKET
FILTER(MECH),AIR
SENSOR ASEMBLY
W0CZZ-2 CAPACITOR
249950
264110
266010
CONTROL BOX,ASSEMBLY
POWER CORD,ASSEMBLY
SWITCH ASSEMBLY,MICRO
268711-1 PWB(PCB)ASSEMBLY,DISPLAY
268711-2 PWB(PCB)ASSEMBLY,MAIN
346811
35211A
352113
552204
354210
554030
554160
359012
567502
349600
436500
144410
238310
235512
752140
550140
149980
435300
MOTOR ASSEMBLY
TUBE ASSEMBLY,SUCTION
TUBE ASSEMBLY,DISCHARGE
COIL ASSEMBLY,SOLENOID
EVAPORATOR,ASSEMBLY
CONDENSOR ASSEMBLY
COMPRESSOR ,SET
FAN,TURBO
OLP
MOUNT,MOTOR
HANDLE
CASTER ASSEMBLY,ROLLER
ESCUTCHEON
COVER ASSEMBLY,DISPLAY
HOSE,CONNECTOR
BUSHING
SHROUD
REAR GRILLE
—33—
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January, 2005
P/No : 3828A31001
Printed in China
Download from Www.Somanuals.com. All Manuals Search And Download.
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