Sharp FU-28H-S Service Manual

FU-28H-S

S4616FU28HS//

AIR PURIFIER

In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its original condition and only parts identical to those specified should be used.

SERVICE MANUAL

FU-28H-S

MODEL

SHARP CORPORATION

Page

SAFETY PRECAUTIONS ..................................................................................................................................2

HOW SHARP AIR PURIFIER WORKS .............................................................................................................4

SPECIFICATIONS FOR THIS PRODUCT ........................................................................................................5

NAMES OF PARTS .......................................................................................................................................... 7

INSTLLATION................................................................................................................................................... 8

ABOUT THE FUNCTION................................................................................................................................ 14

ELECTRIC CIRCUIT........................................................................................................................................15

TROUBLESHOOTING GUIDE ........................................................................................................................22

REPLACEMENT OF MAIN PARTS .................................................................................................................24

OPERATION....................................................................................................................................................29

MAINTENANCE...............................................................................................................................................30

CUMULATIVE TIME CHECK FUNCTION (MAINTENANCE MODE)............................................................. 32

USE RESIN TABLE .........................................................................................................................................33

REPLACEMENT PARTS LIST ........................................................................................................................34

TABLE OF CONTENTS

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SAFETY PRECAUTIONS

When using electrical appliances, basic safety precautions should be followed, including the following:

WARNING

- To reduce the risk of electrical shock, fire or injury to persons:

• Read all instructions before using the air purifier.

• Use only a 220-240 volt outlet .

• Do not use the air purifier if the power cord or plug is damaged or the connection to the wall

outlet is loose.

• Periodically remove dust from the power plug.

• Do not insert fingers or foreign objects into the intake or air outlet.

When removing the power plug, always hold the plug and never pull the cord.

Electrical shock and/or fire from short circuit may occur as result.

• Do not use this air purifier near gas appliances or fireplaces.

• Remove the power plug from the wall outlet before cleaning the unit and when not using the

unit.

Electrical shock from bad insulation and / or fire from short circuit may occur as a result.

• If the power cord is damaged, it must be replaced by the manufacturer, its service agent, Sharp

authorized service or similarly qualified person in order to avoid a hazard.

• Do not operate when using aerosol insecticides or in rooms where there is oily residue, incense,

sparks from lit cigarettes, chemical fumes in the air or a humidity condition.

• Use care when cleaning the air purifier. Strong corrosive cleansers may damage the exterior.

• Only Sharp Authorized Servicers should service this air purifier. Contact the nearest Servicer for any

problems, adjustments, or repairs.

• The batteries must be removed from the remote control before disposal, and the batteries must be

disposed of safely.

CAUTIONS CONCERNING OPERATION

• Do not block the intake and air outlet.

• Do not use the unit near or on hot objects, such as range or where it may come into contact with

steam.

• Always hold the main unit when moving it.

Holding the front panel when carrying may cause it to detach, thus dropping the unit and resulting in bodily injury.

• Do not operate the unit without the filter.

• Do not wash the Active Carbon Filter and the HEPA Filter.

Not only it does not improve filter performance, it may cause electric shock or malfunction.

• Clean the exterior with a soft cloth only.

The unit surface may be damaged or cracked. In addition, the sensor may malfunction as a result.

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REMOTE CONTROL LIMITATIONS

DO NOT USE THE REMOTE CONTROL IN THE FOLLOWING LOCATIONS:

• Any location where there is inverter lighting equipment or electronic spontaneous lighting equipment

The remote control may become inoperative. In this case, move away from such lighting equipment or change direction.

• Location exposed to direct sunlight or fluorescent.

The unit may not receive signals from the remote control.

CAUTIONS WHEN MOUNTING THIS PRODUCT ON A WALL

• Avoid a location where the sensor is exposed to direct wind.

The unit may not operate properly.

• Avoid a location where curtains, etc., come into contact with the intake or air outlet.

Curtains, etc., may become dirty or a malfunction may occur.

• Avoid locations where the unit is exposed to condensation, due to drastic temperature changes.

• Place on a stable surface with sufficient air circulation.

• Install the unit on a wall, wooden pillar, crosspiece, etc. that is flat and strong enough.

• Do not install the unit on a thin wall or on plasterboard. The unit may fall down if installed on an

insufficiently strong wall.

• To install the unit on a wooden wall that is less than 10 mm thick, consult your dealer and have them confirm the strength of the wall before installation.

• Always hold the main unit when moving it.

Holding the front panel may cause it to become detached, thus dropping the unit and resulting in bodily injury.

• Do not install when there is generation of lampblack, such as in a kitchen, etc.

The unit surface may crack or the sensor may malfunction as a result.

FILTER GUIDELINES

• Follow the instructions in this manual for correct care and maintenance of the filters.

This equipment complies with the requirements of Directives 89/336/EEC and 73/23/EEC as amended by 93/68/EEC.

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HOW SHARP AIR PURIFIER WORKS

An air purifier draws in room air from its air intake, lets the air pass through an Active Carbon Filter (Deodorizing Filter) and a HEPA Filter (dust collection filter) inside of the unit, then discharges the air from its air outlet. The air purifier unit repeats this process by moving its internal fan. As air passes through, the HEPA Filter can remove dust particles. The Active Carbon Filter gradually absorbs odour elements as they repeatedly pass through the filter. (Odour elements are absorbed by HEPA Filter as well.) Some odour ingredients absorbed by the filters may become separated and may be discharged through the air outlet and result in additional odour. Depending on the usage environment, this odour may become strong in a shorter period than expected. In this case, purchase the optional replacement filter kit FZ-28SEF.

NOTE

The air purifier is designed to remove air-suspended dust and odour, but not harmful gases (for example, carbon monoxide contained in cigarette smoke). Neither can it completely remove odours that are always present (for example, odours from construction materials and pet odours).

HEPA Filter

Active Carbon Filter

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SPECIFICATIONS FOR THIS PRODUCT

1.Specifications

Type

FU-28H-S

Power supply 220 - 240V 50/60Hz Fan level adjustment Max Silent Rated power (W) 29 3.1 Fan level (m 3 /hour) 168 30 Fan rotation speed (r.p.m.) 1000 ± 10 330 ± 10 Noise (dB) 46 14 Applicable floor area 1 Around ~ 21m

Dust collecting method Mechanical purification Protective devices Current fuse Turning off when abnormal current (2.5A) flows Control panel Power ON/OFF, Fan control, OFF timer

Operation indicator light Plasmacluster indicator light (blue), Auto, Max, Silent OFF-Timer 1 hour, 4 hours

Remote control Operation mode

Power ON/OFF, Auto, Fan control (manual), OFF-timer

OFF TIMER time 1 hour, 4 hours Outside dimension (mm) 482 (W) x 142 (D) x 337 (H) Weight (kg) 6.2 Cord length (m) 2.5 Installation Wall mounting Accessories HEPA filter, Active carbon filter, remote control , 2 AA batteries, Wall mounting Kit (Wall

mounting braket, Wood screws[4], Fisher plugs[4]) Replace the filter 2 HEPA filter : 12 months

Active carbon filter : 12 months Option Replace filter : FZ-28SEF (1 HEPA Filter, 1 Active Carbon Filter.)

1: The size of the room to be referred to is the one in which dust concentration of 1.25mg/m 3 may be reduced to

0.15mg/m 3 within 30 minutes under the condition that the natural ventilation is performed once per hour.

2: Ten cigarettes are smoked per day in the place where the air cleaner is installed.

Reduction of stand-by power consumption

While this product is plugged in, it consumes the stand-by power of approximately 1.0W to activate the electric circuit

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2.External dimentions

1) Simple substance figure

482

[Length unit : mm]

337

139.5

2) Wall tapestry figure

141.5

337

482

[Length unit : mm]

Wall

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NAMES OF PARTS

MAIN UNIT DISPLAY

Plasmacluster Indicator Light Fan Speed Indicator Lights OFF Timer Display Indicator Lights

Remote Control Receiver

Power ON/OFF button

Fan Control button

OFF Timer button

Odour Sensor Filter Frame HEPA Filter (white)

(with Microbial Control Filter)(blue)

Active Carbon Filter

(Deodorizing Filter)

Stainless Steel Pre-Filter Front Panel

BACK

Power Cord Adjusting Guide

Power Cord Power Plug

ACCESSORIES

Remote Control

(1 unit)

Battery

(R6(AA) battery X 2 )

Operation Manual

Wall mounting kit

• Wall mounting bracket

• Wood screws (4 pcs)

• Fisher plugs (4 pcs)

Air Outlet

(Shape of plug depends on country)

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INSTALLATION

FOR APPROPRIA TE INST ALLATION

To remove room odour

Installing the unit high up on the wall is most effective.

To remove room dust

Comparatively large dust particles such as pollen and house dust collect in the lower strata of the room air.

Select a location in the room where the air circulation is good.

This improves the cleaning performance and causes Plasmacluster ions to spread throughout the room.

Operating Conditions

Please operate the unit under the following conditions.

It is recommended to use the unit in a room where the temperature is in the range of 0 - 35C°. Avoid locations where the unit is exposed to condensation, due to drastic temperature changes.

Installation Cautions

• Before fixing the wall mounting bracket, make sure there is nothing that could obstruct installation of the unit. Then fix the wall mounting bracket through screw holes with the supplied wood screws.

• Install the unit on a wall, wooden pillar, crosspiece or the like that is flat and strong enough..

• If the wall is weak or made of concrete, have the unit installed by a specialist such as an electric appliance

store.

• Avoid locations near inverter lamps or where the unit is exposed to direct sunlight.

Determine the mounting location

Leave space around the bracket referring to the drawing below. The unit cannot be mounted if there is insufficient spacing around the bracket.

207mm

337mm (Size of main unit)

48mm

54mm

235mm

482mm (

Size of main unit)

Power cord

330mm

16mm

60mm

3mm

92mm

Wall mounting bracket

Screw Holes

Size of main unit

70cm or more from side wall

Center line of Wall mounting bracket

Center line of main unit

45cm or more

from the ceiling

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Installation on a wooden pillar

ø5mm

35mm

Installation on a wooden crosspiece

Wood screws (4)

Wooden pillar

Caution

• To install the unit on a wooden wall that is less than 10 mm thick, consult your dealer and have them confirm the strength of the wall before installation.

• Install the unit on a wall, wooden pillar , crosspiece, etc. that is flat and strong enough.

• Make sure that the unit is installed in an upright position, without leaning to the right or left.

Wooden crosspiece

Wall mounting bracket

Hole on the wall

Fisher plug

Wood screw

Mount wall mounting bracket

•Mount the bracket using the included wood screws so that it is maintained level.

Installation on a concrete, block or mortar surface

Drill holes of at least 35 mm depth and 5 mm diameter into the wall, drive in Fisher plugs, and fix the unit with wood screws.

Installation on a wooden pillar, crosspiece or other wooden surface

Use wood screws for installation.

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Before starting the wall installation, be sure to remove the front panel and filter frame.

In case the power plug to be lead to the left of the unit.

Do not wire the power cord right below the wall mounting bracket.

Power cord adjusting guide

In case the power plug to be lead to the right of the unit.

Cautions

•To avoid scratching or damaging the unit, place it on a soft piece of cloth until it is installed on the wall.

•Do not lead the power cord together with other cord and do not twist it.

•Never modify the power cord.

•Take care not to damage the power cord.

Front Panel

Filter Frame

Air Outlet

Install the unit on the wall.

Place the unit facing up, remove the Front Panel and Filter Frame.

Adjust the length of the power cord.

Measure the distance between the unit and the wall outlet. (Refer to E-6)

Place the unit face down, and insert the power cord into the power cord adjusting guide so as to adjust it to the measured length.

Power Cord Adjusting Guide

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Apply a mark (tape, etc.) 8 cm above both ends of the wall mounting bracket.

Lift up the unit so that the hooking holes on the unit are aligned with the marks, hook the unit onto the wall mounting bracket and slide it to the right. When positioned correctly, the unit will move down slightly until it engages.

Alignment with the right hooking holes

Alignment with the left hooking holes

Double-check the installation.

Make sure that the claws of the unit are hooked in properly . If they are not, the unit will move sideways. In addition, the unit may fall off the wall and be damaged.

•Make sure that the power cord is not caught in the unit.

Remove the mark.

Wall mounting bracket

HOW TO REMOVE THE UNIT

Pull the power plug out of the wall outlet and remove the Front Panel and Filter Frame. Holding the unit by its lower corners, lift it up slightly, then slide it to the right or left and lift it off toward the top.

mark

about 8 cm

claw socket

about 8 cm

mark

claw socket

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Be sure to remove the filters from the plastic bags before using the unit.

Remove the Pre-Filter, Active Carbon Filter and HEPA Filter from the Filter Frame.

Remove the Active Carbon Filter and HEP A Filter from the plastic bags.

Place the HEPA Filter within the Filter Frame.

Do not install the filter backwards or the unit will not operate properly .

Place the Active Carbon Filter within the Filter Frame on top of the HEPA Filter.

The Active Carbon Filter does not have a front and a back.

Next, place the Pre-Filter within the Filter Frame.

Fit the 4 tabs of the Pre-Filter into the holes in the Filter Frame.

FILTER INSTALLATION

Tabs

Pre-Filter

Active Carbon Filter

HEPA Filter

Filter Frame

HEPA Filter

Filter Frame

Pre-Filter

Active Carbon Filter

HEPA Filter

Filter Frame

Tabs

How to Remove the Stainless Steel Pre-Filter

Active Carbon Filter

HEPA Filter

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Mount the Filter Frame to the main unit.

Fill in the usage start date on the Date Label.

Use the date as a guide for the Filter Replacement schedule.

Mount the Front Panel to the main unit.

Insert the power plug into the wall outlet and check on/off operation using

the remote control.

Date Label

Claw socket

Claw

Filter Frame

Front Panel

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ABOUT THE FUNCTION

AUTO OPERATION

The air purifier will automatically adjust its speed according to the air quality detected by the odour sensors in order to clean effectively.

SILENT OPERATION

The air purifier will operate quietly, producing only a slight current of air (the lowest fan speed).

MAX OPERATION

The air purifier will operate at its highest setting. This feature is useful when you want to remove airborne dirt and contaminants from room air quickly.

OFF TIMER OPERATION

The air purifier will turn itself off after the set amount of time elapses (1 or 4 hours).

PLASMACLUSTER ION OPERATION

While the product is in operation, the unit will constantly dischange approximately the same amount of Positive and Negative ions. This is effective for reducing some airbone mold.

SAFETY DEVICES

Fuse .....................Operates in the presence of an abnormal current (trip current: 2.5A)

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ELECTRIC CIRCUIT

1. ABOUT LEAD-FREE SOLDER

1) Employing lead-free solder

The "Main PWB" of this model employs lead-free solder. This is indicated by the "LF" symbol printed on the PWB and in the service manual. The suffix letter indicates the alloy type of the solder.

Example:

L F a

Sn-Ag-Cu

Indicates lead-free solder of tin, silver and copper.

2) Using lead-free wire solder

When repairing a PWB with the "LF" symbol, only lead-free solder should be used. (Using normal tin/lead alloy solder may result in cold soldered joints and damage to printed patterns.) As the melting point of lead-free solder is approximately 40ºC higher than tin/lead alloy solder, it is recommend that a dedicated bit is used, and that the iron temperature is adjusted accordingly.

3) Soldering

As the melting point of lead-free solder (Sn-Ag-Cu) is higher and has poorer wettability, (flow), to prevent damage to the land of the PWB, extreme care should be taken not to leave the bit in contact with the PWB for an extended period of time. Remove the bit as soon as a good flow is achieved. The high content of tin in lead free solder will cause premature corrosion of the bit. To reduce wear on the bit, reduce the temperature or turn off the iron when it is not required. Leaving different types of solder on the bit will cause contamination of the different alloys, which will alter their characteristics, making good soldering more difficult. It will be necessary to clean and replace bits more often

when using lead-free solder. To reduce bit wear, care should be taken to clean the bit thoroughly after each use.

2. WIRING DIAGRAM

(CACCJA031KKEZ)

AC220-240V

(FW-VZA056KKEZ)

(CKITTA020AKKZ)

(CMOT-A021KKEZ)

CLUSTER HARNESS

UNIT

PLASMACLUSTER

POWER SUPPLY PWB ASS'Y

POWER SUPPLY CORD

ACAC

10P

WH-A

PC1

MOTOR

FAN

CONTROL PWB ASS'Y

PWB ASS'Y

DISPLAY

SWITCH

PWB ASS'Y

WH-B

WH-C

12P

CN-A CN-B

10P 12P

CN-C

PWB ass'y(CPWB-A056KKKZ)= Power supply PWB + Control PWB + Display PWB + Switch PWB

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3. PRINTED WIRING BOARD

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4. OPERATIONS (1) Block diagram

Noise preventon circuit

Power supply circuit

Power supply clock generation circuit

clock circuit

LED drive circuit

Fan motor drive circuit

Reset circuit

Key input circuit

Plasmacluster unit drive circuit

Remote control signal receive circuit

Buzzer drive circuit

EEPROM circuit

Odour sensor circuit

LSI-1 (Microcomputer)

1) 2) 3) 5)

10) 9) 13) 8)

11) 4) 7)

12)

(2) Circuit description

1) Noise prevention circuit

This circuit protects the circuit from the external noise and lightning surge coming in from the AC plug, and also absorbs the noise outgoing from the AC plug. It consists of the film capacitor C1 and C4, varistor VRS1, current fuse FUSE, and line filter L1.

2) Power supply circuit

a) Vm: The commercial power supply (AC220-240V) is put through the current fuse FUSE, rectified by the

diode bridge DB1, and smoothed by the electrolytic capacitor C2. Then it is supplied as the power input for the fan motor and the hybrid IC (HIC1). (Vm = approx. DC311-339V)

b) VL: The hybrid IC (HIC1) is activated by the DC input Vm and the external coil L2, and has two output

terminals. The first output is changed into VL after being smoothed by the electrolytic capacitor C12. It is used as the power supply for the buzzer drive circuit, fan motor drive circuit, and plasmacluster unit drive SSR1 (VL = approx. DC15V).

c) VDD: The second output is smoothed by the electrolytic capacitor C11 before used as the power supply for

the microcomputer LSI-1, plasmacluster unit drive circuit, odour sensor circuit, and LED drive circuit (VDD = approx. DC5V).

3) Power supply clock generation circuit

The voltage between the input terminal to DB1 and its output terminal (GND) is divided by the resistor R21, R22 and R23, and input into the digital transistor Q21. Then it is converted into the DC square wave signal that has the same frequency with the AC power supply, and input into the pin 38 on the microcomputer LSI-1 via the resistor R25 and the ceramic capacitor C22. The microcomputer LSI-1 considers it as the source signal for time count, and decides the power supply frequency and controls the output time. When this signal retains " H " or " L " state for over certain period of time, the microcomputer LSI-1 assumes it to be a power failure and stops outputs from the fan motor, plasmacluster unit, odour sensor, buzzer, and LED.

4) Reset circuit

If the VDD is lower than specified, " L " is input into the pin 8 of the microcomputer LSI-1 to reset LSI-1 using the circuit consisting of the reset IC (IC-2), R31 and C32. When VDD is higher than specified, " H " is input into the same pin, reset command is canceled, and LSI-1 is started.

5) Clock circuit

This generates the clock signal required for operation of the microcomputer LSI-1. Its frequency is 8MHz which is supplied from the ceramic oscillator CF1.

6) Key input circuit

The key SW1 - SW3 on the switch PWB unit is connected to the resistor R101. The key status is input into the pin 9 of the microcomputer LSI-1 via the resistor R102 and the ceramic capacitor C101.

Key ON : H, Key OFF : L

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7) LED drive circuit

Repetitive signal of " H " and " L " output from the pins 18 - 20 of the microcomputer LSI-1 turns on and off the digital transistors Q110 - Q112. They are turned on one by one at intervals of certain time. When " L " is output from the pins 15 - 17 of the microcomputer LSI-1 as they are turned on, the corresponding LED that are connected to them light up. And " L " is output from the pin 11 of the microcomputer LSI-1, Q113 is turned on, the plasmacluster LED turned on blue.

8) Remote control receiving circuit

The infrared signal transmitted from the remote controller is received by the reception unit RU1. When the H/L signal is input into the pin 23 of the microcomputer LSI-1 via the resistor R81 and the ceramic capacitor C83, it is determined from which key the signal was transmitted. C81, C82, and C83 absorb or reduce the disturbing lights, noise derived from its own power supply circuit, and external noise.

9) Odour sensor circuit

The pulse signal, which is the odour sensor drive signal, is output from the pin 41 of the microcomputer LSI-1, and the odour sensor is pulse-driven on the circuit of Q71, Q72, R73, R74, R76, and C73. The sensor output signal is input into the pin 29 (A/D conversion terminal) of the microcomputer LSI-1 via R71 and C71.

< Principle of odour sensor >

The metal oxide semiconductor in this sensor reacts to ammonia, hydrogen, and alcohol, and changes the resistance.

Weak odour : high resistance

high voltage

Strong odour : low resistance

low voltage

< Control >

After turning the power on, the value obtained 25 seconds after starting the first operation is set as the reference value and the contamination is decided in relative comparison between the values detected at an interval of approximately one second and the reference value. Although the odour sensor is always activated during operation, it is deactivated while the operation is stopped to cut down the standby power consumption. However, if it comes to a complete stop, the reading condition is altered in the next operation. Therefore, it is activated for one minute in every ten minutes to keep the operating conditions.

Reference value : If the current level is cleaner than the reference value

the reference value is changed to the current value immediately. If the current level is dirtier than the reference value and the contamination level changes (such as suddenly increased odour of cigarette smoke)

the reference value remains the same

the value in the clean condition is adopted as a new reference value. If the current level is dirtier than the reference value and the contamination level does not change (Natural change only)

the reference value remains the same.

the value in the cleanest condition at eight-minute intervals is adopted as a new

reference value.

10)Buzzer drive circuit

The " H " / " L " signals output from the pin 22 of the microcomputer LSI-1 drive the digital transistor Q51 and sound the buzzer BZ1.

11)Fan motor drive circuit

The fan motor has four input terminals and one output terminal.

Vm:DC voltage input to be the source of motor rotation. (Vm = approx. DC311-339V)

(FM 7 pin) Vm created by the power supply circuit is directly input and is constantly applied.

GND:Reference of the electric potential. All potentials such as Vm, Vcc, Vs, and PG indicate the

(FM 5 pin) potential differences with GND.

Vcc:DC voltage input terminal to be the power supply for the circuit that is built in the fan motor.

(FM 3 pin) During operation, it turns on Q43 and Q44 by outputting the " H " signal from the pin 21 of the

microcomputer LSI-1, and supplies the potential almost equal to VL to the Vcc terminal (Vcc = approx. DC15V).

Vs:This input terminal controls the rotation speed of the fan motor (speed instruction signal).

(FM 2 pin) After supplying Vcc during operation, the PWM (x/256µs) pulse is output from the pin 25 of the

microcomputer LSI-1 and smoothed in the circuit consisting of C41, R41-43, Q41 and Q42. Then it goes through R46 and C43 to supply the DC voltage to the Vs terminal. (Vs = approx. DC 0 ~ 6V) When speeding up rotation : the pulse width X is widened

Vs voltage is increased

When slowing down rotation : the pulse width X is narrowed

Vs voltage is decreased

PG:Fan motor rotation speed output terminal (feedback signal)

(FM 1 pin) The pulse signal according to the rotation speed is output and it is input into the pin 24 of the

microcomputer LSI-1 via the circuit consisting of R47, R44, R45, and C42. The microcomputer recognizes the current rotation speed based on this PG signal, and controls the Vs signal above to keep the speed to the designated level.

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12)Plasmacluster unit drive circuit

The plasmacluster unit is the power supply unit that supplies the high voltage to generate ion from the cluster electrode, and it can be activated by inputting AC220-240V into it. When the solid state relay SSR1 is turned on, the voltage for commercial power supply drops in the resistor R124 and approximately AC90-110V is applied to the plasmacluster unit. During operation, it outputs " H " / " L " from the pin 39 of the microcomputer LSI-1, turns on and off Q121, and controls and drives SSR1.

13)EEPROM circuit

During operation, data integrated with the operation time of the fan motor (dirtiness of the filter) is read and written into EEPROM (IC-1) using the repetitive signals of " H " and " L " that are input and output from the pins 6 and 7 of the microcomputer LSI-1.

5. TEST MODE

(1) Outline

Test mode is the mode for testing operation of circuit PWB, or sensors and the load output.

(2) Setting method

When turning on the power while pressing the [OFF TIMER button] of the main body, the buzzer sounds "peep" and enters the "test mode".

(3) Canceling method

In all test modes, when pressing the [POWER ON/OFF button] on the remote controller, the buzzer sounds "peep" and the "test mode" is canceled and becomes the initial state at normal halt.

(4) Contents

By operating and checking, the check of circuit PWB, sensors, and the load output of operation can be performed as follows.

PWB ASSEMBLY

Load Output LED

No. Operation Operation mode OFF timer Cluster Buzzer Point to be check

Fan Cluster Odour Auto Max Silent 4 hours 1 hour ion

Silent Max Drive Sensor Green Green Green Green Green Blue

PORT No. 25 39 41 2 3 4 5 6 1 – LED No.

1 Turn the power on while holding down

Model select, memory ON/OFF check

the "OFF TIMER" button on the main unit.

2 Press the "POWER ON/OFF" button

EEPROM version No. [upper side] check

on the main unit.

3 Press the "FAN CONTROL" button

EEPROM version No. [lower side] check

on the main unit.

(High)

4 Press the "OFF TIMER" button

(High)

5 Press the "Auto" button

(High)

6 Press the "Manual" button

Fan motor rotation speed [upper side] check

Check the rotation speed [upper side] of

on the remote controller. the fan motor (Max).

8 Blow gas to the Odour sensor.

9 Power OFF

2) Error display list No. Concerned item No. Error display, symptom Error contents Probable cause

Reference

1 item 2 Auto lamp flickers, operation impossible EEPROM communication error EEPROM circuit failure, EEPROM failure 2 item 2 Auto lamp lights on, operation impossible EEPROM data error Wrong EEPROM data 3 All items Silent lamp flickers. Fan motor rotation speed error Fan motor circuit failure

Check the version No. of EEPROM. (Version No. 29 = 00011101)

: ON : Peep sound, : Pip sound

on the main unit.

on the remote controller.

(High)

7 Press the "OFF Timer" button

Fan motor rotation speed [lower side] check

on the remote controller.

1) Check the voltage : VDD = 5V±0.3V

Check the rotation speed [lower side] of the fan motor (Max).

OK if in the range of ±1 in binary digit. The "Cluster ion" lamp lights on after 10 seconds has passed from the start of item 2.

The "Auto" lamp lights on.

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6. ERROR MODES

(1) Outline

Error modes serve as self-diagnostic tools, using a range of sensors to detect errors and failures in the purifier and its circuitry and indicating the nature of those errors through load operation and error displays. This air purifier supports two error modes, "EEPROM error" and "fan motor rotation speed error".

(2) EEPROM error

(a)Outline ............................. This e r r o r mode is activated when "a communication error" or "a data error" is

detected while loading information stored on the EEPROM at the time of a power

supply injection.

(b)Detection time .................. Immediately after a power supply injection.

(c) Error display..................... Only the "auto lamp" flashes in a one-second cycle. All other LEDs are turned off.

(d)Switch operation .............. All switch operations are invalid.

(e)Loads control ................... All loads turn off. The buzzer does not sound.

(f) Remedy ........................... Please replace the PWB.

(3) Fan motor rotation speed error

(a)Outline ............................. This error mode is activated when the unit detects that the fan motor is locked or

the connector is opened.

(b)Detection time .................. In all modes during operation

consecutive seconds.

(d)Abnormality display.......... Only the "silent lamp" flashes in a one-second cycle. All other LEDs are turned off.

(e)Loads control ................... All loads are turned off immediately and it considers as an operation stop state.

The buzzer does not sound.

(f) Cancellation ..................... The error mode can be cancelled by pressing the "POWER ON / OFF " button on

the main unit or on the remote controller. However, with the problem unsolved, the

unit enters the same error mode even if you turn on the unit again.

(g)Remedy ........................... Please check the insertion of connector on the PWB side.

When you still become unusual, please replace the motor or PWB.

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6.CONTROL CIRCUITDIAGRAM

FU-28H-S

TROUBLESHOOTING GUIDE

Always use the designated parts when replacing parts. Service of the PWB ass'y

The electrical circuit is composed of the Control PWB ass'y, Power supply PWB ass'y, Display PWB Ass'y and the Switch PWB ass'y.

No. 1

3 4

Problem

The purifier will not operate.

The silent lamp is flashing and the purifier will not operate.

The auto operation lamp is flashing. The purifier is making an unusual noise.

Sound is intermittently audible coming from the plasmacluster ion generation unit.

The air purifier's ability to collect dust has deteriorated.

The air coming from the air outlet smells bad.

The remote control doesn't work.

The air purifier resets itself immediately (and stops operating).

Cause and symptoms

Faulty wiring. Fan feels unusually heavy when rotated

manually (motor failure + PWB current fuse burned out). Power supply PWB current fuse (FUSE) burned out.

Power supply PWB current fuse (FUSE) burned out and varistor (VRS1) failure. Faulty PWB. Broken connection in power cord. Faulty fan motor. The motor harness is not properly inserted into PWB. Faulty PWB. Faulty PWB.

Faulty motor. Faulty motor mount. Faulty fan shape. Faulty fan mount. Changes in room humidity.

Filter replacement is overdue. The pre-filter has become clogged. There is an obstruction near the air inlet or outlet. Undesirable odors that have accumulated in the antibacterial HEPA filter are being released. The air purifier is being used near a light that uses an inverter or lighting is old and is flickering. The air purifier is being in a location where it is exposed to direct sunlight. Faulty remote control. Faulty PWB. There are no batteries in the remote control.

The remote control's batteries are dead. Faulty PWB.

Solution Check whether connectors are inserted properly; repair; replace. Replace motor and PWB.

Inspect the motor (rotate the fan manually and replace motor and PWB if fan feels heavy). Replace PWB.

Replace. Replace. Replace. Check whether the connector is inserted properly; repair; replace. Replace. Replace.

Replace. Repair. Replace. Repair or replace. This does not indicate a problem with the air purifier. Please advise customers that while the sound may grow louder or softer depending on the humidity of the room where the air purifier is being used, the plasmacluster ion effectiveness remains the same. Replace the filters. Clean the pre-filter. Move the air purifier to a different location. Replace the antibacterial HEPA filter (there is a charge for this replacement). Move the air purifier to a different location or replace the light.

Move the air purifier to a different location. Replace. Replace. Load batteries into the remote control. Replace the remote control's batteries. Replace PWB.

FU-28H-S

This symptom Does not indicate a problem with the air purifier.

The purifier is making clicking noise.

Sometimes a clicking sound is audible coming from the purifier; sometimes, it is not.

This sound is produced when plasmacluster ions are being generated.

While this sound may grow louder or softer and may even become almost inaudible depending on the humidity of the room where the air purifier is being used, the plasmacluster ion effectiveness remains the same.

FU-28H-S

REPLACEMENT OF MAIN PARTS

Be sure to return all screws to their original positions and tighten appropriately when reassembling the air purifier after repair. Different screws are used for different purposes based on characteristics such as head type, diameter, and length. You should also make sure that no lead wires are caught in unit parts and that connectors have been inserted securely. After reassembling the purifier, use the control buttons on the remote control or on the purifier itself to check for proper unit operation and verify that there are no unusual vibrations or sounds coming from the purifier.

<< PRECAUTIONS WHEN HANDLING PWB >>

Connect harnesses in accordance with the color labels on PWB. (Press harnesses firmly together until they lock into place.) Always wear a grounding band to counteract static electricity when handling PWB K. (The LSI [microcontroller], EEPROM, and 2-color blue and green LEDs are particularly susceptible to static electricity and require extra care.) Do not place PWB K on Styrofoam or mirror mats that are prone to collect static electricity.

WARNING

Unplug the air purifier before attempting to repair or disassemble the unit (there is a danger of electrical shock).

1. HOW TO REMOVE THE FRONT PANEL AND FILTER

(1)Place the air purifier face up, hold the bottom of the

Front Panel by two locations, and then lift the Front Panel up.

Front

Panel

anel

Front Panel

(2)Remove the Filter Frame and then in order take out

the Stainless Steel pre-filter, Active Carbon Filter, and HEPA Filter.

Stainless

Steel pre-filter

teel pre-filter

Filter Frame

Stainless Steel pre-filter

Filter Frame

Hold the Filter Frame and Stainless Steel pre-filter by the tabs and pull to remove the Stainless Steel pre-filter.

Active Carbon

Filter

ilter

HEPA

Filter

ilter

Active Carbon Filter

HEPA Filter

2. HOW TO REMOVE THE FRONT FRAME

(1)Remove the 6 Back Panel screws (4 x 12 mm bind-

ing head screws) holding the Front Frame.

symbol: 4 x 12 mm screws

Back

Panel

anel

symbol: 4 x 12 mm screws

Back Panel

FU-28H-S

(2)Disconnect the Display PWB and Operation PWB

harnesses from the Control PWB.

Display PWB harness

Operation PWB harness

Display PWB harness

Operation PWB harness

ASSEMBLY PRECAUTIONS

*Make sure the power cord is not pinched when as-

sembling the Front Frame.

* When wiring the power cord, make sure it is not

pinched between the casing plate and the Front Frame.

3. HOW TO REMOVE THE DISPLAY PWB AND THE OPERATION PWB

(1) Remove the 2 screws (3 x 12 mm binding head

screws) that are holding the Operation Switch Box from the Front Frame.

Front

Frame

rame

Operation

Switch

witch

Box

symbol: 3 x 12 mm screws

Front Frame

Operation Switch Box

symbol: 3 x 12 mm screws

(2) Remove the two screws (3 x 8 mm binding head

screws) and two hooks of the Operation PWB from the Operation Switch Box, and then separate the Operation PWB and Operation Button.

Operation PWB

Operation

Switch

witch

Box

symbol: 3 x 8 mm screws

Operation PWB

Operation Switch Box

symbol: 3 x 8 mm screws

Operation

Button

utton

Operation Button

(3) Remove the 2 screws (3 x 12 mm binding head

screws) holding the Display PWB.

Display PWB

symbol:

3 x 12 mm screws

x 12 mm screws

Display PWB

symbol: 3 x 12 mm screws

ASSEMBLY PRECAUTIONS

*Assemble while pulling the Display PWB and Opera-

tion PWB harnesses in the direction of the arrow.

Pull the harness

*Make sure the Display PWB and Operation PWB har-

ness wires do not get pinched.

4. HOW TO REMOVE THE FAN

(1) Remove the 4 intake guard screws (4 x 10 truss

head screws).

symbol: 4 x 10 mm screws

Intake Guard Cluster Maintenance Cover

symbol: 4 x 10 mm screws

FU-28H-S

(2) Remove the Nut and then remove the Spring

Washer, Fan, and Sitting Washer.

Spring

Sasher

asher

Nut

Fan

Spring Sasher

Nut

Fan

Sitting

Washer

asher

Sitting Washer

ASSEMBLY PRECAUTIONS

*To minimize fan vibration, do not press down on the

outer edge of the fan while tightening the nut. (The nut tightening torque is 1.6 to 1.8 Nm)

*Tighten so that the spring washer becomes flat.

5. HOW TO REMOVE THE CASING PLATE AND DISCHARGE VENT

(1)Remove the 4 screws (4 x 12 binding head screws)

and 3 screws (4 x 8 binding head screws) holding the Casing Plate, and then remove the Casing Plate.

symbol: 4 x

8 mm screws

mm screws

symbol: 4 x 1

2 mm screws

mm screws

symbol: 4 x 8 mm screws symbol: 4 x 12 mm screws

ASSEMBLY PRECAUTIONS

*Be careful not to damage the power cord.

(2)Remove the Discharge Vent from the Back Panel.

The Discharge Vent is engaged by the Back Panel hooks. To remove it, pull it in the direction shown by the arrow.

Discharge

Vent

ent

Discharge Vent

(3)Remove the Discharge Guard from the Discharge

Vent.

Discharge

Vent

ent

Discharge

Guard

uard

Discharge Vent

Discharge Guard

ASSEMBLY PRECAUTIONS

*Assemble so that the edge of the Discharge Guard

faces upward as shown in the illustration above.

6. HOW TO REMOVE THE PLASMACLUSTER UNIT

(1)Disconnect the Cluster harness.

Remove the screw (4 x 10 binding head screw) holding the Cluster Box Cover.

Cluster Box Cover

Hook the harness on the boss during assembly.

Cluster harness

Cluster Box

symbol: 4 x 10 mm screws

Cluster Box Cover

Hook the harness on the boss during assembly.

Cluster harness

Cluster Box

symbol: 4 x 10 mm screws

(2) Remove the 2 screws (4 x 10 truss head screws)

holding the Cluster Box Cover and then remove the Cluster Unit.

Cluster Unit

Cluster Box

Cover

symbol: 4 x 10 mm screws

Cluster Unit

Cluster Box Cover

symbol: 4 x 10 mm screws

ASSEMBLY PRECAUTIONS

*Make sure the Cluster Box Cover is installed in the

correct orientation.

FU-28H-S

7. HOW TO REMOVE THE CONTROL PWB

(1)Remove the Power Supply PWB harness from the

Control PWB.

Power

Supply PWB harness

upply PWB harness

Power Supply PWB harness

(2) Remove the 2 screws (4 x 12 mm truss head

screws) holding the Control PWB Box component.

symbol: 4 x 1

2 mm screws

mm screws

symbol: 4 x 12 mm screws

(3) Remove the 2 screws (3 x 12 mm binding head

screws) holding the bottom and top of the Control PWB Box.

Control

PWB

Box Bottom

symbol: 4 x 12 mm screws

Control PWB Box Bottom

symbol: 4 x 12 mm screws

(4) Remove the Control PWB Box from the top while

pushing the Control PWB Box Bottom hooks (4 locations) in the direction shown by the arrow.

Control

PWB

Box Top

Control

PWB

Box Bottom hooks

Control

PWB

Box Bottom

Control PWB Box Top

Control PWB Box Bottom hooks

Push

Control PWB Box Bottom

(5)Remove the Control PWB.

Control PWB Box Top

Control

PWB

Box Bottom

Control PWB

Control PWB Box Top

Control PWB Box Bottom

Control PWB

8. HOW TO REMOVE THE POWER SUPPLY PWB

(1) Remove the 2 screws (4 x 12 mm truss head

screws) holding the Power Supply Box component.

Power supply

PWB Box Top

symbol: 4 x 12 mm screws

Power supply PWB Box Top

symbol: 4 x 12 mm screws

(2)Remove the Power Supply PWB Box Top and dis-

connect the Power Cord, Motor harness, and Cluster harness from the Power Supply PWB.

Power Supply

PWB

Box Bottom

Motor harness

Cluster harness

Power Cord

Power Supply PWB Box Bottom

Motor harness

Cluster harness

Power Cord

ASSEMBLY PRECAUTIONS

*Replace the wires to their original positions. *

When wiring, make sure none of the wires get pinched.

(3)Remove the 2 Power Supply PWB screws (3 x 10

mm binding head screws).

symbol:

3 x 1

x 1

0 mm screws

mm screws

symbol: 3 x 10 mm screws

FU-28H-S

9. HOW TO REMOVE THE MOTOR

(1)Remove the Motor harness Cover in the direction

shown by the arrows, and then remove the Motor harness. *Hold down the areas marked with @ with one hand

while lifting up and removing the Motor harness Cover with the other hand.

Motor harness

Cover

over

Motor harness

Motor harness Cover

(2)Remove the 4 Motor Angle screws (4 x 14 binding

head screws), and then lift up and remove the Motor Angle.

Motor

Angle

ngle

symbol: 4 x 14 mm screws

Motor Angle

symbol: 4 x 14 mm screws

(3)Remove the Motor and the Front and Back Rubber

Cushions. And disconnect the motor harness from the power supply PWB.

Back Rubber Cushion

Front Rubber Cushion

Motor

Back Rubber Cushion Front Rubber Cushion

Motor

ASSEMBLY PRECAUTIONS

*When installing the Motor, set the Motor so that the

circled flange holes line up with the positions on the Back Panel shown by the arrows.

*Make sure the Motor Angle and Motor do not make

contact.

Install so that the gaps

are about the same.

Arrow mark

Install so that the gaps are about the same.

Arrow mark

(4) Remove the 2 screws (3 x 12 mm binding head

screws) and then pull out the AC Cord Angle and Power Cord.

ACAC Cord Angle

Cord Angle

Power Cord

symbol: 3 x 12 mm screws

AC Cord Angle

Power Cord

symbol: 3 x 12 mm screws

ASSEMBLY PRECAUTIONS

* When wiring, make sure none of the wires get

pinched.

*Insert the circled motor harness cover areas first.

ASSEMBLY PROCEDURE

Assemble in the reverse order of disassembly. Assemble paying attention to the assembly precautions written in the disassembly procedure.

FU-28H-S

OPERATION

MAIN UNIT OPERATION

POWER ON/OFF button

• Used to start AUTO operation (short beep) and stop operation (long beep).

• Plasmacluster Indicator Light and Fan Speed Indicator Light (AUTO) turn on/off.

• Unless unplug the power cord, the operation starts in the previous mode the unit was operated in.

Fan Control button

The fan speed can be switched among Silent, Max and AUTO.

OFF Timer button

• The set timer switches every time the button is pressed as shown below.

• When “4 hours” is selected “4 H” indicator light activates. When the remaining time becomes 1 hour, then indicator light switches to “1 H”.

For the first 30 seconds after the plug is inserted into the wall outlet, the unit will check the conditions of the air.

Silent

Max

AUTO

1 hour

4 hours

Cancel

• Auto Operation

Odour sensor checks the amount of impurities in the air and the fan speed switches automatically.

• Manual Operation

Regardless of the amount of impurities, desired fan speed can be switched between Silent and Max.

POWER ON/OFF button

• Used to start AUTO operation (short beep) and stop operation (long beep).

• Plasmacluster Indicator Light, and Fan Speed Indicator Light (AUTO) turn on/off.

• Unless unplug the power cord, the operation starts in the previous mode the unit was operated in.

AUTO (Fan Speed) button

The fan speed switches automatically depending on the amount of impurities in the air.

MANUAL (Fan Speed) button

The fan speed can be switched between Silent, Max.

OFF Timer button

• The set timer switches every time the button is pressed as shown below.

• When “4 hours” is selected “4 H” indicator light activates. When the remaining time becomes 1 hour, then indicator light switches to “1 H”.

REMOTE CONTROL OPERATION

Silent

Max

1 hour

4 hours

Cancel

Plasmacluster Ion Operation

While the product is in operation, the unit will constantly discharge approximately the same amount of Positive and Negative cluster ions. This is effective for reducing some airborne mold.

FU-28H-S

MAINTENANCE

1 CLEANING THE PRE-FILTER

» Use a vacuum to clean off the pre-filter. When especially dirty, wash the pre-filter with water.

When washing with water, use cold or lukewarm water (40ºC or less) and a soft brush. Metal brushes or scrub brushes may cause damage. *After washing with water, leave the pre-filter in the shade until it is completely dry.

2 CLEANING ODOUR SENSOR

Place the vacuum cleaner nozzle against the odour sensor holes to suck out the dust.

Caution: Be careful not to damage the air purifier with the nozzle during cleaning.

3 CLEANING THE FAN AND INSIDE THE AIR PURIFIER

» Remove the 6 screws (4 x 10 mm truss head screws) holding the

intake guard and cluster maintenance cover.

CLEANING THE FAN

» Refer to P. 24 of the Service Manual "4. How to remove the fan," and

remove the fan. Wash the fan with water. Use a towel to dry the washed fan or set it in a shady area with good ventilation to let it dry.

CLEANING INSIDE THE AIR PURIFIER

» Use a well wrung out damp towel to clean inside the air purifier.

Do not wipe the surfaces of the plasmacluster unit electrodes with a towel, etc.

Intake guard

Cluster maintenance cover

symbol: 4 x 10 mm screws

Intake guard

Cluster maintenance cover

symbol: 4 x 10 mm screws

FU-28H-S

4 CLEANING THE PLASMACLUSTER UNIT ELECTRODES

» Soak a cotton swab with cleaning alcohol and use it to wipe off the electrodes.

Do not directly touch the electrodes with your fingers while doing this. Also make sure no foreign matter gets into the circled areas.

5 CLEANING THE POWER PLUG

(1)Use a soft, dry cloth to clean the power plug. (2)After cleaning, make sure there is no dust or debris on it.

*Do not use the power plug if the prongs are loose.

Doing so could cause a malfunction. Contact a dealer or the service company.

6. ASSEMBLING THE DISASSEMBLED PARTS

(CLUSTER MAINTENANCE COVER, FAN AND FILTER CASE)

(1)Use the 2 screws to reattach the cluster maintenance cover. (2)Install the dry fan as follows.

a) In the following order place the sitting washer, fan, spring washer, and nut on the motor shaft. b) Tighten the nut until the spring washer flattens out.

CAUTION : Do not press down on the outer edge of the fan while tightening the nut.

(3)Install the intake guard with 4 screws. (4)Place the filters into the filter frame and install the filter frame into the main unit. (Refer to P. 26.) (5)Place the front panel.

7 INSERT THE POWER PLUG INTO THE OUTLET

» Make sure the power plug is completely inserted into the outlet.

8 OPERATION CHECK

(1)Use the buttons on the side of the main unit and the remote control to make sure it works properly. (Check to

make sure the operation lamps turn on and off.)

(2)Check for abnormal sounds during operation.

If there is an abnormal sound, the fan might not be installed properly. Recheck the fan installation. If this does not eliminate the sound, do not use the air purifier and contact the dealer or service company.

FU-28H-S

CUMULATIVE TIME CHECK FUNCTION (MAINTENANCE MODE)

This product (FU-28H) allows you to check the cumulative operation time. This can be used as a guideline for conducting maintenance.

MAINTENANCE MODE SETTING METHOD

(1)Plug in the power plug and make sure operation has stopped. (2)Press the air purifier's [Operation Change Button] and [OFF Timer Button] for at least 3 sec. (3)When the buzzer beeps, the air purifier has entered the maintenance mode. (4)You can tell the approximate accumulative time by the number of times the lamps shown in the illustration below

flash.

Lights Indication

4H 1H

Operation cumulative time

*The values shown in parentheses ( ) are guidelines for when operation is conducted 24-hours per day.

0 hr to 1,440 hr

(0 month to under 2 months)

(2 month to under 4 months)

(4 month to under 6 months)

(6 month to under 8 months)

(8 month to under 10 months)

(10 months or more)

Up to 2,880 hr Up to 4,320 hr Up to 5,760 hr Up to 7,200 hr

Over 7,200 hr

CUMULATIVE TIME RESET METHOD

Press the air purifier's [OFF Timer Button] for 1 sec. The buzzer will beep and the lights will all turn off. The cumulative time is now reset.

MAINTENANCE MODE CANCELLATION METHOD

Press the air purifier's [POWER ON/OFF Button] while in the maintenance mode. The buzzer will beep and operation will stop.

FU-28H-S

USE RESIN TABLE

REF. NO.

Parts Code Parts Name Material Name

2-1 JBTN-A010KKMA CONTROL BUTTON Acrylonitrile Butadiene Styrene HB-ABS 2-2 PCOV-A072KKFZ CONTROL SWITCH BOX Polystyrene V0-HI-PS 2-3 GCAB-A042KKRA FRONT FRAME Polycarbonate/Acrylonitrile Butadiene Styrene V0-PC-ABS 2-5 PBOX-A013KKFA FILTER CASE Polycarbonate/Acrylonitrile Butadiene Styrene V0-PC-ABS 2-7 GGAD-A002KKFZ INTAKE GARD Polycarbonate/Acrylonitrile Butadiene Styrene V0-PC-ABS 2-8 GKUT-A001KKFA VENT Polycarbonate/Acrylonitrile Butadiene Styrene V0-PC-ABS 2-9 LHLDZA004KKFZ MOTOR ANGLE Polycarbonate/Acrylonitrile Butadiene Styrene V0-PC-ABS 2-10 NFANSA004KKFZ FAN Acrylonitrile Butadiene Styrene V0-ABS 2-11 PBOX-A012KKFZ CLUSTER BOX Polystyrene V0-HI-PS 2-12 PCOV-A067KKFZ POWER PWB BOX TOP Polycarbonate/Acrylonitrile Butadiene Styrene V0-PC-ABS 2-13 PCOV-A068KKFZ POWER PWB BOX BOTTOM Polycarbonate/Acrylonitrile Butadiene Styrene V0-PC-ABS 2-14 PCOV-A069KKFZ INSPECTION COVER Polystyrene V0-HI-PS 2-15 PCOV-A070KKFZ LSI PWB BOX TOP Polycarbonate/Acrylonitrile Butadiene Styrene V0-PC-ABS 2-16 PCOV-A071KKFZ LSI PWB BOX BOTTOM Polycarbonate/Acrylonitrile Butadiene Styrene V0-PC-ABS 2-17 PCOVNA002KKFA MOTOR HARNESS COVER Polystyrene V0-HI-PS 2-18 PFTA-A001KKFZ CLUSTER BOX COVER Polystyrene V0-HI-PS 2-20 HPNL-A062KKTA FRONT PANEL BASE Polycarbonate/Acrylonitrile Butadiene Styrene V0-PC-ABS 2-21 HPNL-A107KKRA ORNAMENT PANEL L Polycarbonate VO-PC

REF. NO. PART NO. DESCRIPTION Q'TY CODE

FU-28H-S

REPLACEMENT PARTS LIST

ELECTRIC PARTS

1- 1 CRMC-A064KKEZ Remote controller 1 AR 1- 2 CACCJA031KKEZ Ac cord 1 AM 1- 3 CKITTA020AKKZ Plasmacluster unit 1 AX 1- 4 CMOT-A021KKEZ Motor 1 BG 1- 5 CPWB-A056KKKZ 28H pwb ass’y 1 BL 1- 7 FW-VZA056KKEZ Cluster harness 1 AE

MECHANICALPARTS

2- 1 JBTN-A010KKMA Control button 1 AK 2- 2 PCOV-A072KKFZ Control switch box 1 AD 2- 3 GCAB-A042KKRA Front frame 1 BA 2- 4 PSHEPA001KKEA LED sheet 1 AD 2- 5 PBOX-A013KKFA Filter case 1 AQ 2- 6 FCAS-A017KKKA Back panel ass’y 1 BA 2- 7 GGAD-A002KKFZ Intake gard 1 AN 2- 8 GKUT-A001KKFA Vent 1 AH 2- 9 LHLDZA004KKFZ Motor angle 1 AG 2- 10 NFANSA004KKFZ Fan 1AS 2- 11 PBOX-A012KKFZ Cluster box 1 AE 2- 12 PCOV-A067KKFZ Power pwb box top 1 AH 2- 13 PCOV-A068KKFZ Power pwb box bottom 1 AH 2- 14 PCOV-A069KKFZ Inspection cover 1 AF 2- 15 PCOV-A070KKFZ Lsi pwb box top 1 AH 2- 16 PCOV-A071KKFZ Lsi pwb box bottom 1 AG 2- 17 PCOVNA002KKFA Motor harness cover 1 AG 2- 18 PFTA-A001KKFZ Cluster box cover 1 AE 2- 19 DPNL-A037KKKZ Front panel ass’y 1 BL 2- 20 HPNL-A062KKTA Front panel base 1 BB 2- 21 HPNL-A107KKRA Ornament panel L 1 AZ 2- 22 HPNL-A063KKLA Ornament panel S 1 AQ 2- 23 HBDG-A002KKEA Al badge 1 AE 2- 24 MROD-A002KKWZ Front panel angle 1 AF 2- 25 PFIL-A074KKEZ Collect dust filter 1 AZ 2- 26 PFIL-A075KKEZ Deodorant filter 1 AY 2- 27 PFIL-A076KKEZ Pre-filter 1 AS 2- 28 PCUS-A041KKEZ Filter cushion L 2 AC 2- 29 PCUS-A042KKEZ Filter cushion S 2 AC 2- 30 GGAD-A003KKWZ Vent gard 1 AG 2- 31 LANGFA009KKWZ Casing plate 1 AQ 2- 32 LANGKA018KKWZ Ac cord angle 1 AD 2- 33 FANGTA001KKKZ Stand plate assy 2 AE 2- 34 PCUSGA001KKFZ Motor gum front 1 AF 2- 35 PCUSGA002KKFZ Motor gum back 1 AL 2- 36 PCOVNA001KKEZ Stand hole cover 2 AC 2- 37 PCUS-A045KKEZ Filter cushion S 2 AC 2- 38 PCUS-A044KKEZ Hole cushion 6 AC 2- 40 TLAB-A121KKRZ Caution label 1 AC 2- 41 PSHEPA002KKEZ Sheet A 1 AC

ATTACHED PARTS

3- 1 FBATUA001KKYZ Battery pack k 1 AH 3- 2 LPFTPA001KKEZ Plug 4 AC 3- 3 PGUM-A016KKEZ Wall-cushion gum 2 AC 3- 4 LANGTA008KKMZ Base angle 1 AH 3- 5 LANGTA009KKMZ Wall fitting angle 1 AK

PRINTED MATTER and PACKAGE PARTS

90- 1 TINS-A119KKRZ Operation manual 1 AF 90- 3 SSAKAA042KKEZ Attached parts bag 1 AB 90- 4 SSAKAA045KKEZ Attached parts bag S 1 AA 90- 5 SPADBC567YDEZ Top pad 1 AH 90- 6 SPADBC568YDEZ Bottom pad 1 AK

REF. NO. PART NO. DESCRIPTION Q'TY CODE

FU-28H-S

90- 7 SPAKCJ521YDEZ Packing case 1 AL 90- 8 SSAKHA402YDEZ Body plastic bag 1 AD 90- 9 SSAKAA043KKEZ Holder bag 1 AA 90- 12 TCAUZA010KKRZ Caution label 1 AC 90- 13 TLAB-A120KKRZ Filter label 1 AC 90- 14 TSPCNA143KKRZ Name plate 1 AE 90- 17 TLAB-A062KKRZ Filter caution label 1 AC 90- 19 SSAKAA049KKEZ Wall ag bag 1 AB 90- 20 SSAKA0019YDE0 Poly bag 1 AA 90- 22 SPAKHA002YDEZ Body pad 1 AD

SCREWS

4- 1 PPLT-A016KKWZ Fan washer 1 AC 4- 2 XNFS760-50000 Nut 1 4- 3 XWSS760-10000 Spring washer 1 A XZBS730P08000 Tapping screw 4 B XZBSD30P10000 Screw(special) 2 AA C XZBS730P12000 Special tap. screw 8 D XZBS740P08000 Tapping screw 3 E XBTS740P10000 Tapping screw 6 F XZTS740P10000 Special tap. screw 3 G XZTS740P12000 Special tap. screw 4 H XZBS740P12000 Tapping screw 10 I XZBS740P14000 Tapping screw 4 J XBRS740P10000 Tapping screw 2 K XTTS740P30000 Tapping screw 4

HOW TO ORDER REPLACEMENT PARTS

To have your order filled prompty and correctly, please furnish the following information.

1. MODEL NUMBER 2. REF. NO. 3. PART NO. 4. DESCRIPTION

123456

FU-28H-S

'2004.7. SHARP CORP.

FU-28H

1-1

2-1

3-4

3-3

3-5

3-2

3-1

4-1

4-2

4-3

2-2

2-3

2-6

2-8

2-4

2-5

1-2

2-9

2-10

2-11

2-41

2-12

2-14

2-13

2-19

2-20

2-28

2-38

2-40

2-37

2-29

2-30

2-31

2-32

2-34

2-35

2-33

2-36

2-25

2-26

2-27

2-21

2-22

2-23

2-17

2-18

2-15

2-16

1-4

1-5

1-3

2-7

Attached parts

Sharp FU-28H-S Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual