LG WDRH657C7HW Users guide

website : http://biz.lgservice.com

e-mail : http://LGEservice.com/techsup.html

WASHING MACHINE

SERVICE MANUAL

CAUTION

READ THIS MANUAL CAREFULLY TO DIAGNOSE PROBLEMS CORRECTLY BEFORE OFFERING SERVICE.

BEFORE SERVICING THE WASHING MACHINE, UNPLUG THE POWER CORD TO AVOID THE RISK OF AN ELECTRIC SHOCK.

WHEN SERVICING INTERNAL PARTS, USE ONLY SERVICE PARTS SUPPLIED FROM LG.

AFTER SERVICING THE ELECTRIC WIRE, INSURE THAT INSULATION TAPE IS APPLIED TO PREVENT AN ELECTRICAL SHORT.

MODEL : FH*G1*CHK(0~9)N

1

CONTENTS
1. SPECIFICATIONS.....................................................................................................................	3
2. FEATURES & TECHNICAL EXPLANATION.............................................................................	4
3. PARTS IDENTIFICATION..........................................................................................................	6
4. INSTALLATION..........................................................................................................................	7
5. OPERATION............................................................................................................................	12
6. WIRING DIAGRAM / PCB LAYOUT........................................................................................	17
7. TROUBLESHOOTING.............................................................................................................	19
7-1. BEFORE PERFORMING SERVICE.................................................................................	19
7-2. LOAD TEST MODE .........................................................................................................	19
7-3. HOW TO CHECK THE WATER LEVEL FREQUENCY....................................................	20
7-4. ERROR DISPLAY.............................................................................................................	21
7-5. TROUBLESHOOTING WITH ERROR..............................................................................	23
• IE (WATER INLET ERROR) ..........................................................................................	23
• UE (UNBALANCED ERROR) ........................................................................................	25
• OE (WATER OUTLET ERROR) ....................................................................................	26
• FE (OVER FLOW ERROR) ...........................................................................................	28
• PE (PRESSURE SENSOR S/W ERROR) .....................................................................	29
• dE2 (DOOR OPEN ERROR)..........................................................................................	31
• dE1 (DOOR SWITCH ERROR)......................................................................................	32
• dE4 (DOOR SENSOR ERROR).....................................................................................	33
• tE (THERMISTOR (HEATING) ERROR) .......................................................................	34
• LE (MOTOR LOCK ERROR)..........................................................................................	37
8. TROUBLESHOOTING WITHOUT ERROR CODES...............................................................	39
• No power .......................................................................................................................	39
• Vibration & Noise during spin ........................................................................................	40
• Detergent & Softener dose not flow in ..........................................................................	41
• Water Leak ....................................................................................................................	42
• Before using the Wi-fi function ......................................................................................	44
9. PART INSPECTION.................................................................................................................	48
9-1. FILTER ASSEMBLY (LINE FILTER) ...............................................................................	48
9-2. DOOR LOCK SWITCH ASSEMBLY.................................................................................	49
9-3. STATOR ASSEMBLY.......................................................................................................	51
9-4. PUMP MOTOR ASSEMBLY.............................................................................................	52
9-5. INLET VALVE ASSEMBLY...............................................................................................	53
10. DISASSEMBLY INSTRUCTIONS..........................................................................................	54
11. EXPLODED VIEW AND PART LIST......................................................................................	63

2

1. SEPECIFICATION

	ITEM			FH*G1BCHK(0~9)N
	POWER SUPPLY			220 V - 240 V ~, 50 Hz
	PRODUCT WEIGHT			76 kg
		WASHING		190 W
	ELECTRICITY		SPIN	380 W
		DRAIN MOTOR		30 W
	CONSUMPTION
		STEAM HEATER		1600 W
		WASH HEATER		2200 W
	REVOLUTION		WASH	46 rpm
	SPEED		SPIN	No Spin / 400 / 600 / 800 / 1000 / 1200 / 1600
	OPERATION WATER PRESSURE			100 ~ 1000 kPa (1.0 kgf/cm2 ~ 10.0 kgf/cm2)
	CONTROL TYPE			Electronic
	WASH CAPACITY			Refer to the Rating Label
	DIMENSION			600 mm(W)x 640 mm(D)x 850 mm(H)
	WASH PROGRAM			Cotton, Cotton+, Mixed Fabric, Easy Care
				Wool, Quick 30, Allergy Care, Steam Refresh
				Outdoor, Gentle Care, Wash+Dry(8kg), Download Cycle
	RINSE			Rinse, Rinse+
	DOOR SWITCH TYPE			PTC+Solenoid
	WATER LEVEL			by Pressure Sensor S/W
	RESERVATION			From 3 hours to 19 hours
	SENSING LAUNDRY AMOUNT			Adapted
	FUZZY LOGIC			Adapted
	DISPLAY REMAINING TIME			Adapted
	ERROR DIAGNOSIS			10 items
	POWER AUTO OFF			Adapted
	CHILD LOCK			Adapted
	AUTO RESTART			Adapted
	TIME SAVE			Adapted
	SMART			Wi-fi feature (Smart ThinQ)
				Smart Diagnosis function(3.0)

WARNING

ˍTo reduce the risk of personal injury, adhere to all industry recommended safety procedures including the use of long sleeved gloves and safety glasses.

Failure to follow all of the safety warnings in this manual could result in property damage, personal injury or death.

3

2. FEATURES & TECHNICAL EXPLANATION

2-1. Product Features

Inverter Direct Drive system

The advanced Brushless DC motor directly drives the drum without belt and pulley.

6 Motion

Washer is able to perform various drum actions or a combination of different actions depending on the wash program selected. Combined with a controlled spin speed and the ability of the drum to

rotate both left and right, the wash performance of the machine is greatly improved, giving you perfect results every time.

Turbo Wash

Wash the laundries in 1 hour with energy and water saving.

Smart ThinQ (Wi-Fi feature)

This feature lets you use various functions of the product, e.g., remote control, smart alert, mode download, and smart self-diagnosis via the smartphone app.

More economical with Intelligent Wash system

Intelligent Wash System detects the size of load and water temperature, and then determines the optimum water level and washing time to minimize energy and water consumption.

Child Lock

The Child Lock prevents children from pressing any button to change the settings during operation.

Low noise speed control system

By sensing the amount of load and balance, it evenly distributes load to minimize the spinning noise level.

Auto Restart

Auto Restart allows the program to restart all by itself in case of power failure. It does from the stage where it stopped.

SmartDiagnosis™

Should you experience any technical difficulty with your washing machine, it has the capability of transmitting data by phone to the Customer Information Center. The call center agent records the data transmitted from your machine and uses it to analyze the issue, providing a fast and effective diagnosis.

4

2-2. DETERMINE WASHING TIME BY FUZZY LOGIC

To get the best washing performance optimal time is determined by sensing the water temperature, selected washing temperature and laundry amount.

water temperature

washing time

selected	FUZZY	rinse time	the best
washing	LOGIC		washing
temperature			performance
		spin rhythm, time
laundry
amount
SENSING	PROCESSING	DETERMINATION	EFFECT

2-3. WATER LEVEL CONTROL

This model adopts a pressure sensor which can sense the water level in the tub.

Water supply is stopped when the water level reach the preset level, then washing program proceeds. Spinning does not proceed until the water in the tub reduces to a certain level.

2-4. THE DOOR CAN NOT BE OPENED

While program is operating.

While Door Lock light is on.

5

3. PARTS IDENTIFICATION

1	Transit bolts
2	Power plug
3	Drawer
4	Control panel
5	Drum
6	Door
7	Drain hose
8	Drain plug
9
10	Cover cap (Location may
	vary depending on products)
11	Adjustable feet

Accessories

Cold supply hose (1EA)	Spanner	Caps for covering	Anti–slip sheets (2EA)
(Option: Hot (1EA))		transit bolt holes	(Optional)
		(Optional)

Elbow bracket for	Tie strap (Optional)
securing drain hose
(Optional)

6

4. INSTALLATION

INSTALLATION

The appliance should be installed as follows.

1Check the conditions of installation area.

1. Check level ground.

horizontal

On raised foundations or upper level homes, the vibrations can be caused by the type of flooring. It may be necessary to move the machine to a different area in the home or have the floor reinforced to properly support the operation of the unit.

2. Check for humidity or any foreign objects under the feet.

Clean the floor, there should be no foreign objects under the feet.

If the unit has foreign objects underneath the feet, this will prevent the unit from being leveled properly and will cause vibrations and slipping.

Remove any foreign objects, if any from underneath the machine and level unit properly. See below for examples of foreign objects.

Purchased		Carpet		Paper		Laminated
stopper						paper

2 Open the box and check appliance condition.

Washer

Base Packing

This leveling (or spanner) wrench must be used to remove the shipping bolts and level the unit. This should be kept for future use.

Spanner

7

l

l l

l

lll

l l

l	ll
l

lll

l l

1.

2.

ll

3.

l

ll

l l

l

l llll

1.	2.	3.	l
		ll	l
		l
			l
	l		l
l		l	l
	l		l
		ll	l
	l		l

l

8

6 Connect Drain Hose.

If the drain hose is not installed properly, the unit will not drain properly. This allows water to back flow into the unit which can cause odors. Refer to Owner Manual for proper drain hose installation.

The odor could also be coming from the home’s drain to which the drain hose is attached.

about 100 cm

about 145 cm

about 105 cm

		<![if ! IE]> <![endif]>max. 100 cm
<![if ! IE]> <![endif]>min. 60 cm

Laundry tub

Hose
Retainer
Tie	Max. 100cm
strap	min. 60cm

Max. 100cm

min. 60cm

In this type of drain hose installation, the odor could be coming from the standpipe. This odor can come up the drain hose and into the unit.

Pour a cup or two of bleach or vinegar down the home drain and let it sit for 24 hours before running another cycle.

This will help eliminate odor from the home drain.

If a cycle is started too soon after doing this, it will not help the issue.

7 Connect power plug.

Connect the power plug to the wall outlet.

Avoid connecting several electric devices, it may be the cause of a fire.

9

8 Check the horizontality with a level (Gage).

Step1

If washing machine legs are loose or not Screwed in, then tighten with the spanner wrench. Using the level, level the washing machine from front to back and side to side.

A level

Higher

Tighte

Adjustable feet

Step2

Use the spanner wrench to adjust Legs until level and try the Diagonal test.

Diagonal test

How to perform a diagonal test:

Place your right hand on the back, right corner and your left hand on the front, left corner of the unit, then attempt to rock the unit from corner to corner. Then, move your right hand to the front, right side and your left hand to the back, left corner and attempt to rock the unit from corner to corner.

If the unit is level, it will not rock. However, if the unit is not level, it will rock. If the unit rocks, it will be necessary to adjust the leveling feet of the unit. Adjust the foot under the hand that is on the front of the machine.

	Higher	Lower	Lock nut
Tighten	Tighten
			Adjustable bolt
	Adjustable feet	Adjustable feet

Gap

Floor

No Gap

10mm

Floor

Lower the foot until there is no gap between floor and foot.

And only use adjustment rubber when difference at the leg adjustment is more than 10mm.

Rubber Cup	4620ER4002A	4620ER4002B
	(Black)	(Gray)
	for Tile floors	for Wooden floors

Step3

Perform a Rinse and Spin with some clothing in the machine.

To do this, put 2~3kg of clothing in the unit, turn on the unit, Select the Rinse+Spin and then start. When the unit reaches the spin cycle, watch for vibrations.

If the unit is vibrating, make small adjustments to he leg until they subside. (Repeat step 2)

Step4

Tighten the lock nut against the base of the machine to lock the position leg.

Tighen the lock nut

No Gap

Floor

10

9 Test operation
1	Preparation	2	Touch the power button.	3	Touch the START/PAUSE
	for				button.
	washing.

·Connect the power plug to the outlet.

·Connect the inlet hose.

·I n case of Coloreds program.

6 Check the water heating.

5 Check automatic reverse turn.

4 Check the water supply.

·Touch the Wash and Spin button simultaneously and the present temperature will be displayed.

·Check if the drum rotates clockwise and counterclockwise.

·Check if water is supplied through the detergent dispenser.

7 Check the drain and spin functions.

8 Turn power off and open	9 Water removal.
the door.

·Turn power off and then power on. ·Select the spin rpm

·Touch the START PAUSE button. ·Check the spin and drain functions.

·Turn power off and then power on. ·Listen for a click to determine if the door is unlocking.

·To turn off, touch the power button for 1sec

·If SVC is needed during check, remove the remaining water by pulling out the leg cap.

11

5. OPREATION

Control Panel

3

A

4

2

1Power Button

•Press the Power button to turn the washing machine on.

2Start/Pause Button

•This Start/Pause button is used to start the wash cycle or pause the wash cycle.

•If a temporary stop of the wash cycle is needed, press the Start/Pause button.

1

B

C

5

• : The display shows estimate time remaining. While the size of the load is

being calculated automatically, blinking or ‘Detecting’ appears.

• : The water temperature is displayed when pressing the Temp. button.

• : The spin speed level is displayed when pressing the Spin button.

3Display

•The display shows the settings, estimated time remaining, options, and status messages. When the product is turned on, the default settings in the display will illuminate.

• The estimated energy( ) and water

( ) consumptions are displayed before washing and the actual consumptions after washing.

4Programme Button

•Programmes are available according to laundry type.

•Lamp will light up to indicate the selected programme.

5Options

•This allows you to select an additional programme and will light when selected.

•Use these buttons to select the desired programme options for the selected cycle.

12

Press the Delay End button and set the estimated end time required.

Press the Start/Pause button.

Option Programme

Delay End

You can set a time delay so that the washing

1 Press the Power button.

2 Select a washing programme.

3

4

NOTE

•The delay time is the time to the end of the programme, not the start. The actual running time may vary due to water temperature, wash load and other factors.

•To cancel the Time Delay function, the power button should be pressed.

•Avoid using liquid detergent for this option.

Steam (Optional)

Steam Wash features enhanced washing performance with low energy consumption. Steam Softener sprays steam after a spinning cycle to reduce creases and make the laundry

1 Press the Power button.

2 For Steam Wash option, select steam programmes. For Steam Softener option, select Cotton or Cotton+, Mixed Fabric, Easy Care.

3 The following programme is selected depending on the number of times you press the Steam button.

•Once: Steam Wash

•Twice: Steam Softener

•Three times: Steam Wash and Steam Softener

4 Press the Start/Pause button.

Steam Wash ()

•For heavily stained clothes, underwear or baby clothes.

•Available with the Cotton, Cotton+, Mixed Fabric, Easy Care, Allergy Care, Steam Refresh programmes.

•Do not use Steam Wash for easily discoloured clothes and delicates such as wool, silk.

Steam Softener ()

•

•Available with the Cotton, Cotton+, Mixed Fabric, Easy Care programmes.

•Do not use Steam Softener for easily discoloured clothes and delicates such as wool, silk.

•Depending on the kind of fabric, softening performance may be different.

13

EcoHybrid

Use for air condensing dry without water consumption used for condensing.

1 Press the Power button.

2 Select a drying programme.

3 Press the EcoHybrid button.

4 Press the Start/Pause button.

NOTE

• Available with the Normal or Iron programme.

Add Item

Laundry can be added or removed after the washing programme is started.

1 Press the Add Item button when the LED is turned on.

2 Add or remove laundry.

3 Close the door and Press the Start/Pause button.

NOTE

•For safety reasons, the door remains locked when the water level or temperature is high. It is not possible to add laundry during this time.

•If the water temperature in the drum is high, wait until it cools down.

Remote Start

Use a smart phone to control your appliance remotely. You can also monitor your cycle operation so you know how much time is left in the cycle.

NOTE

•

register your appliance in order to use the Remote Start function. (Refer to 'Smart Appliance Connectivity')

To Use Remote Start:

1 Press the Power button.

2 Put the laundry in drum.

3 Press and hold Remote Start button for 3 seconds to enable Remote Start function.

4 Start a cycle from the LG Smart ThinQ application on your smart phone.

NOTE

•If you do not start your appliance, it will wait to start a cycle until you turn off your appliance from the application or disable the Remote Start function.

•When Remote Start is turned on, the door is automatically locked.

CAUTION

•When adding laundry, make sure to completely push it into the drum. If laundry gets stuck in the door latch hole, the rubber packing may be damaged, causing water leakage and malfunction.

•Forcing the door open may cause part damage, destruction, or safety problems.

•If you open the door while there are a lot of suds and water in the drum, the suds or water

To Disable Remote Start:

When the Remote Start is activated, press and hold Remote Start button for 3 seconds.

NOTE

• If the door is open, Remote Start is disabled.

14

Pre Wash ()

If the laundry is heavily soiled, the Pre Wash programme is recommended.

1 Press the Power button.

2 Select a washing programme.

3 Press and hold the Pre Wash button for 3 seconds.

4 Press the Start/Pause button.

Soil

1 Press the Power button.

2 Select a washing programme.

3 Press the Soil button.

4 Press the Start/Pause button.

Temp.

The Temp. button selects the wash and rinse temperature combination for the selected programme. Press this button until the desired setting is lit. All rinses use cold tap water.

•Select the water temperature suitable for the type of load you are washing. Follow the garment fabric care labels for best results.

Rinse ()

Rinse+ ()

Add rinse once.

Spin

•Spin speed level can be selected by pressing the Spin button repeatedly.

•Spin Only

1 Press the Power button.

2 Press the Spin button to select RPM.

3 Press the Start/Pause button.

NOTE

•When you select No Spin (0), it will still rotate for a short time to drain quickly.

15

Child Lock ( )

Use this option to disable the controls. This feature can prevent children from changing cycles or operating the appliance

Locking the Control Panel

1 Press and hold the Child Lock button for three seconds.

2 A beeper will sound, and will appear on the display.

When the Child Lock is set, all buttons are locked except the Power button.

NOTE

•Turning off the power will not reset the child lock function. You must deactivate child lock before you can access any other functions.

Unlocking the Control Panel

Press and hold the Child Lock button for three seconds.

•A beeper will sound and the remaining time for the current programme will reappear on the display.

Beep On / Off

1 Press the Power button.

2 Press the Start/Pause button.

3 Press and hold the Soil and Temp. button simultaneously for 3 seconds to set the Beep on/off function.

NOTE

•Once the Beep on/off function is set, the setting is memorized even after the power is turned off.

•If you want to turn the Beeper off, simply repeat this process.

Wi-Fi Connect

connected, the Wi-Fi icon on the control panel is lit.

16

6. WIRING DIAGRAM / PCB LAYOUT

17

(P/N : EBR82333901)

V

V ~ U / U ~ W

U

/ W ~ V

R : 8 ~ 11

W

18

7. TROUBLE SHOOTING

7-1. CHECK BEFORE SERVICE

1Before servicing ask the customer what the trouble is.

2Check the adjustments. (Power supply :220-240V~, R emoval of transit bolts etc..)

3Check the troubles referring to the troubleshooting.

4Decide service steps referring to disassembly instructions.

5Then, service and repair.

6After servicing, operate the appliance to see whether it works OK or NOT.

7-2. LOAD TEST MODE

1Turn on, and touch ‘Soil’ and ‘Dry’ at the same time. in 1 second.

2The washer must be empty and the controls must be in the off state.

3Touch Power with above two buttons pressed and then buzzer will sound.

4Touch the Start/Pause button repeatedly to cycle through the test modes.

Numbers	Check Point	Display Status	Remark
0	Turns on all light and locks the door.	PGM Version Information
1	Tumble clockwise	rpm(42~50)
2	Low speed spin	rpm (600)
3	High speed spin	rpm (1300~1400)
4	Inlet valve for prewash turns on.	Water level frequency
5	Inlet valve for main wash turns on.	Water level frequency
6	Inlet valve for hot water turns on.	Water level frequency	For Hot&Cold Model
7	Inlet valve for atomizing turn on.	Water level frequency
8	Inlet valve for steam turns on.	Water level frequency	For Steam Model
9	Tumble counterclockwise	rpm
10	Heater turns on for 3 sec.	Water temperature
11	Circlation Pump turns on.	Water level frequency	For Steam Model
12	Drain pump turns on.	Water level frequency
13	Sensor for steam	Water level frequency	For Steam Model
14	Steam heater turns on for 1.2 sec.	AG Temperature	For Steam Model
15	Off	-

19

7-3. HOW TO CHECK THE WATER LEVEL FREQUENCY

Touch the Temp. and EcoHybrid button simultaneously. Keeping touch, the digits indicate the water level frequecy.

20

7-4. ERROR DISPLAY

If you press the Start/Pause button in error condition, any error except		will disappear and the
machine will change into the pause status.
In case of	, if the error is not resolved within 20 sec., and in case of all other errors, if the

error is not resolved within 4 min., the power will turn off automatically and the error only will blink. But in the case of , the power will not turn off.

	ERROR	SYMPTOM		CAUSE
1	WATER INLET		• Not reached the water level(248) within 10 minutes
	ERROR		after water supplied or not reached to the preset
			water level within 25 minutes.		Page 23
2	WATER OUTLET		• Not fully drained within 10 minutes.		Page 26
	ERROR
3	OVERFLOW		• Water is overflowing (under 21.3kHz).
	ERROR		If "	" is displayed, the drain pump operates
			to drain the water automatically.		Page 28
4	PRESSURE SENSOR		• The pressure sensor switch is out of order.		Page 29
	S/W ERROR
5	DOOR OPEN		• In case of operating the reservation function or the
	ERROR		other function with door opened. Close the door,
			then the error display is resolved.
			• The door switch is out of order.
			• Door Sensor has malfunctioned. .		Page 31
6	UNBALANCE		• The appliance is tilted.
	ERROR		• Laundry is gatherd to one side.		Page 25
7	THERMISTOR(HEATING)		• The THERMISTOR is out of order.		Page 34
	ERROR

21

10 DRY HEATER ERROR

•The Dry Heater is out of order

•The Connector of the Dry Heater is not connected properly to the connector in the

Main PWB ASSEMBLY

•The Dry fan motor is out of order

22

7-5. TROUBLESHOOTING WITH ERROR

Water Inlet Error (IE)

[Note] Environmental safety check list
1.	No water tap leakage or freeze	4. No entanglement of water supply hose.
2.	No water shortage.	5. No water supply hose leakage
3.	The inlet filter is not cloggeed.

Is the water tap closed?

NO

When there is water in the tub, is the water level frequency over 26.0khz?

YES	Check the Water Tap and open it fully.

Check the Air Chamber and the Tube (clogged)

YES Check the water level frequency again,

if it is over 26.2KHz, replace the Pressure Switch.

NO

Is the Connector connected correctly to the Main PCB and the Inlet Valve? is the Harness alright ?

NO

Reconnect or repair the Connector.

Or replace the Harness.

YES

Is the resistance of each lnlet valve within 3.5 ~4.5k?

		Dry Valve
		Pre Valve

Main ValveSteam Valve

Clean nozzle Valve

YES

When the washing machine is started, is the inlet valve operating?

NO	Replace the Inlet Valve.

NO	Replace the Main PCB.

23

Symptom	Check Point
1. INLET VALVE	1.Check Electric Wiring.
ERROR	2.Check Inlet valve’s Resistance.
	3.Check Inlet valve clogged.
	4. Voltage of the inlet valve’s connector.
	-. Valve running : 120Vac ± 5%

		Dry Valve
		Pre Valve
		Main Valve			NA2		BL3
		Steam Valve
		Clean nozzle Valve
			NA4

	Inlet	Main	Resistance
	Vavle	PWB	[kΩ]
	Main	NA4 3th
	wash		0.8 ~ 1.2
		~ BL3 1st
	(1) ~ (2)
	Pre	NA2 2nd
	wash		0.8 ~ 1.2
		~ BL3 1st
	(1) ~ (2)
	Auto	NA2 3th
	mizing		0.8 ~ 1.2
		~ BL3 1st
	(1) ~ (2)
	Hot	NA2 4th
	valve		0.8 ~ 1.2
		~ BL3 1st
	(1) ~ (2)

Auto mizing

24

Unbalanced Error (UE)

Does the load lean toward one side, or is the load a few items?

NO

Is the laundry mixed?

NO

Is the washing machine installed at an angle?

YES

Adjust the height of washing machine to be kept horizontally. (Page 7)

The few items of clothing will clump together YES and their weight will be in one place on the drum,

throwing the weight off during spin mode.

So add some laundry to overcome UE error. And rearrange load to allow proper spinning.

Try rearranging the laundry in drum

Or the laundry is separated by size, type, and color.

YES

Separate by size, type and color

25

Water Outlet Error (OE)

Is the drain hose kinked?

NO

Is the Pump Filter clogged ?

NO

Next Page

Check drain hose for kink and straighten the Hose.

YES

Drain Hose

YES

Check & Clean Pump Filter.

This kind of accumulation on the drain filter not only prevents proper drainage, but also will promote bacteria growth and cause odors.

This drain filter should be cleaned once a month.

* How to disassemble and clean pump filter

Open the Cover by coin or finger(only new model)

Drain water by removing the hose cap.

Disassemble the pump filter by turning the filter cap counterclockwise.

Pump Filter

Cover

Filter Cap

Assemble & close cap

Filter clogged by foreign objects

Clean the filter

Hose Cap

filter Cap

26

27

FE (Overflow Error)

Power off for 10sec. Then power on.

Is the water level over reference line and is the water level frequency under 21.3kHz ?

NO

Is water continuously coming into the drawer?

YES

NO

Replace the Main PCB.

*Water level frequency

-Touch and Hold' ‘Temp.’ & ‘EcoHybrid’ simultaneously.

YES

Drain out the water and then

check the Air Chamber and the Tube (clogged).

If FE is displayed again,

then replace the Pressure Switch.

If FE is displayed again, then replace the Main PCB.

Replace the Inlet Valve assembly.

28

Pressure Sensor S/W Error (PE)

29

Symptom	Check Point
1. PRESSURE	1.Check Electric Wiring.
SENSOR ERROR (PE)	2.Check Pressure sensor‘s Resistance.
	3.Check Air chamber and Tube clogged.

w Gz
			BL1
MAIN PWB			5V
			BL1
			1	1
			2	2
			3	3
			4	4
Micom			5	5
			6	6	VT WH SB
					1	2	3
					NA
					1	2	3
Pressure	Main		Resistance
Sensor	PWB		[Ω]
(1) ~ (3)	BL1 4th	~	21 ~ 23		PRESSURE
	BL1 5th		(± 10%)
					SENSOR
			30