LG GHD30 User manual

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Dehumidifier
SERVICE MANUAL
MODELS: GHD30
LHD45EL
LHD65EL
CAUTION
- BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
- ONLY FOR AUTHORIZED SERVICE.

СОМТЕМТ5
1. РВЕЕАСЕ
Т SAFETY PRECAUTIONS ора ቻሮ ጋሕ 󰌂።ሀ ei ን ም ም 3
1.2 FEATURES AND DIMENSIONS............ ката ыда ына на 󰌂 ን ን. ከ) 3
ТОЛЕЕАТОВЕб አሽሉ... ы шш Жышай ааа 3
ו󰾯 3
0 4
8 5
0 а 5
А2: ЕГЕОТКОМІЕ ТУВЕ не Нн енн 5
1.5 HOW TO יוב יבורב󰾯 - 0... [2 6
1.5.1 HOW DOES THE DEHUMIDIFIER WORK?.............. шиини шшш ининин ншнен не 6
1.5.2 LOCATION FOR THE ОЕНИМЇО1ЕЇЕН................ии иннин нинин ‚иннин ннн 6
1:5:3 MİCRO SWITCH ЕКЕНІ Ты 6
1.5.4 AUTO סה󰾯 оған ен ерен ቸውም ን ሐም ннн ннн 6
1:5:5 HUMIDITY CONTROLLER 0 0ሙችንን።󰌂ንፕ፣..󰌂ንሇያፕ haqa Qatana an ረ 7
2. CIRCUIT DIAGRAM.......... ссеехои бы тыла рты ያን во ана 8
3. DISASSEMBLY INSTRUCTIONS
SAME CHANICAL: PART S ንዓ, ቸችዱ ማዎችን የሰን ከን. Dau q aha aa a 10
1 ВОСКЕТАНВАЈЊЕ ЕТЕР сыны ነ ን ከን ገለቱ መ በ қылы 10
3.1.2 FRONT CASE AND TOP COVFER........... በለት ዋው አበር ቦችን танмен Ыб ጆስ на 10
3.1.3 CABINET AND CONTROL BOX ከይስ ከጅ ን ሌን መከ ከ ም ሌን ንን ከ 10
32 СОМТВОЁРАВТ заманды оданда ቬና ከሪ ነቱ. ም tte anton 11
3.2.1 POWER CORD ASSEMBLY.............. ና ነ ን ንን тыны ት ቅ ሽና 11
3.2.2 SENSOR ASSEMBLY....................... осы ጊደ ሚመር. 󰌂󰌂󰌂 11
3.2.3 PWB(PCB) ASSEMBLY, MAIN ከጸዱ 11
3.24 CAPACITOR L የይ መች ውች шадыр ana son pas ከም የደን Dato нарын anna Ова 11
3.2.5 MICRO SWITCH ASSEMBLY...................... Тыл ы адан а ааа ae ннн ннен 11
3.2.6 COIL ASSEMBLY, ӘӨБЕМОІВ ааа ንን ጠዳ ኤኔ ከሽ ው ከሱ ን ከ) 12
927 CONTROL PANEL ወርች ሽንሽን ጃን ን ንንን በ тылдың 12
328FANANDIMOTGR сысы ጤው. ኩታ. ከ. መ... as 13
ЗӨ DRAIN РАМ ከበን ንንን. ከን "ንት A ሱቱ እነይ алын дыз 13
3.3 REFRIGERATING CYCLE оман тиан || 14
3.3.1 CONDENSER, EVAPORATOR AND CAPILLARY TUBE Шыт 14
2:92 ROTARY COMPRESSOR u na 生生 14
3.4 HOW ТО REPLACE REFRIGERATION SYSTEM ини 15
4. TROUBLESHOOTING СШ ОЕ. нина 17
Э EXPLODED VES ሸሸች ም” ቦን ነነ ነንን адр 19
6. REPLACEMENT PARTS .זפ󰾯 ከ дақққй 22
9-_

1. РВЕЕАСЕ
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
e Drain hose connection.
* Low temperature operation (LHD45ELY6/LHD65ELY6)
1.2.2 DIMENSIONS (ттлп)
385 (15 5/32) 340 (13 38)
—
=
=
N
ሠ
ፎጋ
=ታ
LO
Figure 1
= e

1.3 SPECIFICATIONS
MODELS
LHD45ELY6 LHD65ELY6
CAPACITY(Pints/24hrs) 45
POWER SUPPLY(Phase,V,Hz) 10, 115V,60Hz
INPUT(W) 560
RUNNING CURRENT(A) \ 4
ENERGY FACTOR(L/kw.h) 1.56
REFRIGERANT R22
REFRIGERANT CHARGE, 02)0( 3.70(105) 7.93(195) 8.46(240)
THERMISTOR OPEN 33.8°Е(1+0.5°С)
CLOSE 507Ғ(10-0.5%С)
SOLENOID VALVE Using Temp/Humid.:-4~122°F(-20~50°C)/95%RH |
Rating:7W/90mA
COMPRESSOR MODEL No. QS064CAB QA075CDB QA114CBD
PROTECTOR OVERLOAD PROTECTOR FOR COMPRESSOR
INTERNAL PROTECTOR(FUSE)FOR MOTOR
CAPACITOR 35uF,270VAC 35uF,270VAC 35uF,270VAC
MOTOR ASSEMBLY SINGLE Shaded pole molor, ДЇ 4A Thermal КАН Shaded pole motor, TAN А, Thermal ДЕД Shaded pole motor, BIWI. ВА Thermal одо РАС
SWITCH ASSEMBLY,MICRO 15A/250VAC
OUTSIDED MENSIONS WxHxD,mm(in) 385X540X340(15 5/32 x 21 1/4 x 13 3/8)
NET WEIGHT, kg(Ibs) 17.6(38.9) 20.4(44.9) 22.2(48.9)
*NOTE: Specifications are subject to minor change without notice for further improvement.

1.4 CONTROL ТҮРЕ
1.4.1 Mechanical type
1
Auto
Shut-Off
Off Max
Humidity Control
High
Goldstar
=Low
Fan Speed
Figure 2
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.
MAX is the highest setting.
* When excess moisture and dampness odors аге
gone, adjust the control to a lower setting. Use the
dehumidifier as long as excess moisture is present.
Auto Shut-Off
* 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.
1.4.2 Electronic type
Fan Speed
“Тһе 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.
Humlatty
Control
658527 Puo
十
о | 9
Auto Restart
Figure 3
Fan Speed
* This controls the speed of the airflow.
• High: Fan speed is set to high.
* Low: Fan speed is set to low.
* When Fan Speed button is pressed, the fan speed
mode is changed.
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.
ው
`
Bucket Full Indicator
• This light glows when the water bucket is full and needs
to be emptied.
Power
* Operation starts when this button is pressed and stops
when the button is pressed again.
Humidity Control
“ This button controls the humidity in the room.
* Press @ button to raise the humidity setting.
“Press ©) button to lower the humidity setting.
“Тһе humidity setting can be set to a permanent "On"
setting or to a specific humidity setting between 35% and
70% in 5% increments.
• "Оп" setting: Dehumidifier runs continuously regardless
of humidity condition.
" 35% - 70% setting: Dehumidifier runs on and off
according to surrounding humidity conditions.
Auto Restart
• Once power is restored after a power outage, the unit
returns to its previous operation setting after a 2 minute
delay.
The fan runs immediately when the power is restored.
— 5

1.5 HOW ТО OPERATE DEHUMIDIFIER
1.5.1 HOW DOES THE DEHUMIDIFIER WORK?
Moist, humid air is drawn over а 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).
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)
₪ /t is normal for the surrounding air to become
slightly warmer as the dehumidifier operates.
This warming effect further reduces the relative humidity
of the surrounding air.
1.5.2 LOCATION FOR THE DEHUMIDIFIER
Allow at least 12 inches of space on all sides of the
unit for good air circulation. (See Figure 5)
Ш The dehumidifier must be operated in an enclosed
area to be most effective.
Ш 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.
1.5.3 MICRO SWITCH
Condenser
Evaporator
Dry
Air Out
+ Rear Grille
1 Compressor
N
Side View Figure 4
Figure 5
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.
1.5.4 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 ОМ/ОҒҒ
repeatedly. In this case, please check your room temperature conditions and stop the unit.
NOTE: The low temperature operation feature in the BHD-501 and BHD-651 models will continuously cycle up to a
temperature of 42°F(6°C).
сво

1.5.5 HUMIDITY CONTROLLER
1.5.5.1 Mechanical Type
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.
The relative humidity range is from 20% to 80%. (See
Figure 6)
Turn the Humidity Control to Off to stop the unit manually.
1.5.5.2 Electronic Type
The humidity control can be set "оп" ог 35%-70%
RH(Relative Humidity) for normal operation. (See Figure 7)
זו󰾯 you need drier air, press the © Humidity Control button.
If you need moister air, press the ® Humidity Control
button.
Press the Power button to stop the unit manually.
. 7
High
е Low
Fan Speed
5(42%)
42% RH——
4
Auto Restart
Figure 6
Humidity
Control
中
©
Figure 7

2. CIRCUIT DIAGRAM
• MODEL : GHD30
ROCKER
SWITCH F MAIN PCB
BK
CN-SW(WH)
CN-DIS(BL)
BUCKET
FULL
3854A20247P
PART NO. QTY | RE
DESCRIPTION
GHD30 PER SET|MARKS
POWER
CORD
ASSEMBLY
112
9
SWITCH,
ROCKER
6600FX5001G
MOTOR
ASSEMBLY
4681A20040Q
CAPACITOR
0CZZA20005J
COMPRESSOR,
SET
2520UCBS005
OLP
6750U-L082A
PWB(PCB)
ASSEMBLY,
DISPLAY
6871A20289B
SENSOR
ASSEMBLY
6877A30013L
SWITCH
ASSEMBLY,
ROTARY
6601A30006A
SWITCH
ASSEMBLY,
MICRO
6600A30003C
PWB(PCB) ASSEMBLY, MAIN 6871A10142A
-< | A| — | | -2 | Ss | d, — | -А | -А| 一
0| AN 0|0|01|0|0|о0
ж 5: SERVICE PARTS А: ALTERNATE PARTS N: NOT SERVICE PARTS
—8—

“MODEL : LHD45ELY6/LHD65ELY6
cNSNALVE_MAIN PCB
rm
REVERSING [8
DISPLAY PC.B
FUSE 250V T3.15A
3854А20247.)
РАНТ МО.
LHD45ELY6 LHD65ELY6
POWER CORD ASSEMBLY 12
МОТОВ ASSEMBLY 4681 дА200400 4681 20040
САРАСТОВ 0CZZA20005J 0CZZA20005J
COMPRESSOR, SET 2520UCBA010 2520UCBA007
OLP. 6750U3LO01A 6750U-L048A
PWB(PCB) ASSEMBLY, DISPLAY 6871A20600B
SENSOR ASSEMBLY 6877A30013L
SWITCH ASSEMBLY, MICRO 6600A30003C
PWB(PCB) ASSEMBLY, MAIN 6871A20888C 1
1 COIL ASSEMBLY, SOLENOID 6421A20003K 1
ж 5: SERVICE PARTS A: ALTERNATE PARTS N: NOT SERVICE PARTS
DESCRIPTION
-
9 | | 4| ₪ | | + | |
©
DDN уо уо уо уо уо о

3. DISASSEMBLY INSTRUCTIONS
3.1 MECHANICAL PARTS
3.1.1 ВӘСКЕТ 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)
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 9 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
一 10 一

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.
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)
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.
3.2.5 MICRO SWITCH ASSEMBLY
1. Turn the nut counterclockwise and pull out the
micro switch from the drain pan. (See Figure 18)
一 11 一
Figure 16
Figure 17
Figure 18

3.2.6 COIL ASSEMBLY, SOLENOID
(LHD45ELY6, LHD65ELY6)
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.
3.2.7 CONTROL PANEL
3.2.7.1 CONTROL PANEL - Mechanical Type
(GHD30)
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.
. Remove the nut which fastens the SWITCH
ASSEMBLY, ROTARY.
4. Remove the knob of the rotary switch by pulling it
upward.
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.
CD
о
3.2.7.2 CONTROL PANEL - Electronic Туре
(LHD45ELY6, LHD65ELY6)
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.
(5
Figure 20
Figure 21

3.2.8 FAN AND MOTOR
-
.Turn the nut left and full out the Еап Бу hands
carefully.
2. Remove 2 screws that fasten Heat Ехсһапде.
3. Liftthe НЕ апа openthe Н/Е 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.
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)
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)
--13--
Figure 2
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Figure 3
Figure 5

3.3 REFRIGERATING CYCLE
3.3.1 CONDENSER, EVAPORATOR AND
CAPILLARY TUBE
. Remove the insulation оп 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.
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)
一 人
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)
一 14 一
sj Figure 28
Using Rotary
Compressor models

3.4 HOW ТО REPLACE THE REFRIGERATION SYSTEM
1. When replacing а refrigeration component, be зиге
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.
3. Solder service valves into the pinch-off tube ports,
leaving the valves open.
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.
If high vacuum equipment із 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.
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.
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.
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.
b. Watch the Low-side gauge; allow pressure to
rise to 30 Ibs.
Turn off valve B and allow pressure to drop.
. Repeat steps B and C until the balance of the
charge is in the system.
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.
ао

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
EXTERNAL
VACUUM PUMP
CHARGING
CYLINDER
Figure 31A-Pulling Vacuum Figure 31B-Charging
—16—

4. TROUBLESHOOTING GUIDE
| | сомотом | cause | REMEDY O
1. Dehumidifier does not start. (Both No power Check power supply at outlet.
compressor and fan motor do not Correct if none.
operate.)
Poor
plug
contact
at
outlet.
Install
plug
properly
or
replace
it.
Bucket is full. If Auto Shut Off lights, empty the bucket
and replace properly.
Humidity control is at Off position Turn the humidity control switch toward
Max.
Wire disconnected or loose 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 Voltage (115V + 10%) It must be between 103.5V and 126.5V. If
run. not within limits, call an electrician
Wiring 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 Check for continuity, refer to the wiring
diagram for terminal identification. Replace
the switch if the circuit is open.
Defrost control 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.)
3. Does not defrost control. Defrost control is defective. Check defrost control, replace it.
4. Insufficient dehumidification Low relative humidity Turn dehumidifier off.
Poor air circulation Move dehumidifier to obtain free and
unobstructed air circulation.
H/E clogged with dust and dirt Clean evaporator and/or condenser assembly
Air filter is dirty.
Motor is not operating. Check Motor, repair or replace it.

CONDITION CAUSE REMEDY
missing, replace it
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.
6. Water drips The bucket is not installed properly. The bucket should be properly positioned
on the hangers of the drain pan.
Connection may be loose. Check connection and repair.
Leak in bucket Replace bucket.
Water drips when bucket removed for Before removing bucket, the unit should
emptying. be turned off.
Bucket overflows. Check micro switch and float.
7. Compressor cycles on overload High or low line voltage. (115V + 10%) Check line voltage. It must be between
protector. (OLP) 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. Clean dust or dirt on the Heat Exchange.
Motor If not running, determine the cause.
Replace if required.
Short circuit or ground in electrical circuit Check electrical circuit. Repair.
Unit pressures not equalized Allow 2 or 3 minutes for pressure to
equalize before starting compressor.
Wiring Check the terminals. If loose, repair or
replace.
Refrigeration system Check the system for a restriction.
Stuck compressor 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.)

5. EXPLODED VIEWS
* MODEL: GHD30

* MODEL: LHD45ELY6
VEZ
998
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KX
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