Sharp AF-T908X User manual

AF-T908X

AF-R908X

AF-R1108X

AF-R1208X

AIR CONDITIONER

S6830AFR128X/

SERVICE MANUAL

Page

SPECIFICATIONS ................................................................................................................................................ 2

WIRING DIAGRAM ............................................................................................................................................... 3

EXTERNAL DIMENSIONS................................................................................................................................... 4

OPERATION INSTRUCTIONS ............................................................................................................................ 4

INSTALLATION INSTRUCTIONS ........................................................................................................................ 7

DISASSEMBLING PROCEDURE ...................................................................................................................... 10

HOW TO REPAIR REFRIGERATION................................................................................................................ 14

ELECTRICAL COMPONENT TEST.................................................................................................................... 16

MICROCOMPUTER CONTROL SYSTEM.......................................................................................................... 17

TROUBLESHOOTING GUIDE............................................................................................................................ 24

RUNNING CONDITION ...................................................................................................................................... 28

PACKING AND ACCESSORIES......................................................................................................................... 29

REPLACEMENT PARTS LIST............................................................................................................................ 30

TABLE OF CONTENTS

AF-T908X

AF-R908X

AF-R1108X

AF-R1208X

MODELS

SHARP CORPORATION This document has been published to be used for after

sales service only.

The contents are subject to change without notice.

In the interest of user-safety the air conditioner should be restored to

itsoriginalconditionandonlypartsidenticaltothosespecifiedshould

be used.

AF-T908X

AF-R908X

AF-R1108X

AF-R1208X SPECIFICATIONS

Models AF-T908X, AF-R908X AF-R1108X AF-R1208X

Cooling capacity BTU/h 8500 10500 12000

Moisture removal Pints/h 2.1 3.0 3.8

ELECTRICAL DATA

Phase Single

Rated frequency Hz 60

Rated voltage Volts 115

Rated current Amps 8.0 10.2 11.9

Rated input Watts 850 1100 1300

Power factor % 92 94 95

EER BTU/Wh 10.0 9.5 9.2

COMPRESSOR

Type (Hermetically sealed rotary type)

Model, Remarks QB125CL22

A, 700W QK164CN22A, 890W QK189CN22A, 1050W

REFRIGERANT SYSTEM

Evaporator Louver fin, Grooved tube, 7mm, Hair pin

Condenser

Louver fin, Bare tube, 7mm Hair pin Louver fin, Grooved tube, 7mm Hair pin

Control O.D. x I.D. x Length x Q'ty(mm)

Capillary tube 2.7 x 1.4 x 650 x 1 Capillary tube 2.7 x 1.6 x 800 x 1 Capillary tube 2.7 x 1.2 x 650 x 2

Refrigerant volume R-22(OZ) 15.2(Factory charged) 14.6(Factory charged) 18.5(Factory charged)

NET DIMENSIONS

Width Height Depth

inches(mm)

22-1/16(560) x 14-3/4(375) x 24-5/16(617)

Net Weight lbs 84 84 88

GROSS DIMENSIONS

Width Height Depth

inches(mm)

22-25/32(655) x 18-29/32(480) x 27-7/8(708)

Gross Weight lbs 95 95 99

FAN SYSTEM

Indoor side(Evaporator) Centrifugal fan

Outdoor side(Condenser) Propeller fan

Air flow rate(indoor side) CFM

(High/Med/Low) 275 / 223 / 198 (High/Med/Low) 293 / 265 / 237

(High/Med/Low) 286 / 258 / 230

OTHERS

Safety devices Compressor: Overload relay

Fan motor: Internal thermal fuse

Air filter Polypropylene net

Power cord length ft 4.3

Power plug type 125V, 15A

AF-T908X

AF-R908X

AF-R1108X

AF-R1208X

ELECTRICAL PARTS

Models AF-T908X,AF-R908X AF-R1108X AF-R1208X

Running capacitor 370V-35µF 370V-40µF 370V-60µF

Fan capacitor(indoor/outdoor)

250V-3µF/250V-6µF 250V-6µF/250V-6µF 250V-6µF/250V-6µF

Thermistor 15kΩat 78˚F

Fan motor RMLA046/RMLA045 RMLA044/RMLA043 RMLA044/RMLA043

Overload relay MRA12061-9201 MRA98965-9200 MRA12053-9200

Figure W-1 .

WIRING DIAGRAM

POWER SUPPLY CORD CONTROL BOARD UNIT

DISPLAY

BOARD 

UNIT

115V

60HZ

RIBBED

COMPRESSOR

NON

RIBBED 4A

125V

OVERLOAD

RELAY

3 5 7

RE WH

RUNNING

CAPACITOR

INDOOR

FAN MOTOR

FAN MOTOR

CAPACITOR

(INDOOR)

THERMAL

PROTECTOR

RE OR WH

MRY OUT FU1 NR

BCN1

WIRE COLOR

BK : BLACK

BL : BLUE

RE : RED

WH : WHITE

GR : GREEN

GY : GRAY

OR : ORANGE

YELLOW

ORANGE

THERMISTOR

(ROOM TEMP.)

THERMISTOR

(PIPE TEMP.)

C1 TR

CN1 CN2 CN3

CN4

BCN2

BCN3

GR BK BL

A.C

HML

M.C

CNR1

CNR2

CNR3

CNR4

CNR5

RY1

RY2

RY3

RY4

RY5

135

OUTOOR

FAN MOTOR

FAN MOTOR

CAPACITOR

(OUTDOOR)

THERMAL

PROTECTOR

RE WH

GR BK BL

A.C

M.C

MEGGER TESTING

Check the resistance between connector terminal and motor shaft.

Reading must be more than 10MΩat DC 500V.

(2) Connect RED and GRAY wires to proper source and

make run test by rotating the motor shaft by hand.

MODEL

Indoor fan motor

MAIN COIL

SUB COIL

CON1

CON2

AF-R908X, AF-T908X

approx. 58.95 Ωapprox. 102.16 Ω

approx. 87.89 Ωapprox. 77.26 Ω

approx. 34.75 Ωapprox. 18.16 Ω

approx. 11.89 Ωapprox. 12.30 Ω

AF-T1108X, AF-T1208X

MODEL

Outdoor fan motor

MAIN COIL

SUB COIL

CON1

AF-R908X, AF-T908X

approx. 51.40 Ωapprox. 38.06 Ω

approx. 29.30 Ωapprox. 37.32 Ω

approx. 21.10 Ωapprox. 25.22 Ω

AF-T1108X, AF-T1208X

FAN MOTOR

(1) Using a volt-ohm-meter set on resistance range, check the resistance between the motor windings.

THERMAL 

PROTECTOR 

OFF 125˚C

BLACK

GRY

CAP

BLUE

Indoor fan motor

MAIN CON1

LOW

WHITE

HI

RED

115V, 60Hz

THERMAL 

PROTECTOR 

OFF 125˚C

BLACK

SUB

CAP

BLUE

Outdoor fan motor

MAIN

SUB

CON1 CON2

LOW

WHITE

MID

ORANGE

HI

RED

115V, 60Hz

AF-T908X

AF-R908X

AF-R1108X

AF-R1208X EXTERNAL DIMENSIONS

24-5/16"

5-3/16"

14-3/4"

19/32" 1-3/8"

16-23/32"

22-1/16"

38-19/32"

27-5/32"

OPERATION INSTRUCTIONS

PARTS NAMES

UNIT

Front panel

2Air inlet (Indoor side)

3Louvers

4Air outlet (Indoor side)

5Exhaust lever

6Control panel

7Cabinet

8Air outlet (Outdoor side)

9Air inlet (Outdoor side)

0Filter (Pull the filter handle to the right to remove.)

qFilter handle

wPower cord

456

AF-T908X

AF-R908X

AF-R1108X

AF-R1208X

HIGH COOL

MED COOL

LOW COOL

FAN ONLY

SELECTOR

ENERGY

SAVER

POWER

ON/OFF

TIMER

ON/OFF

TEMP.

CONTROL PANEL

1Display

2SELECTOR indicator

3SELECTOR pad

4POWER indicator

5POWER ON/OFF pad

6TEMPERATURE and TIMER setting pad

" ••••Temp. lower or time reverse

' ••••Temp. raise or time advance

7TEMPERATURE indicator

8TEMPERATURE pad

9TIMER indicator

0TIMER ON/OFF pad

qENERGY SAVER indicator

wENERGY SAVER pad

eReceiver window for remote control signal

(Models AF-R908X, AF-R1108X and

AF-R1208X only)

COOLING OPERATION

PROCEDURE PAD DISPLAY / INDICATOR

1. Touch POWER ON/OFF pad.

•The unit is preset at 74 °F and HIGH COOL.

This will show in display when first turned

on.

2. Touch POWER ON/OFF pad again.

• The unit will stop operating.

•POWER indicator, SELECTOR indicator

(HIGH COOL) and TEMPERATURE

indicator will light.

• POWER indicator, SELECTOR indicator

andTEMPERATURE indicatorwillgo off.

POWER

ON/OFF

POWER

ON/OFF

TO CHANGE TEMPERATURE SETTING

PROCEDURE PAD DISPLAY / INDICATOR

•Display will change as you touch the

pad.

• TEMPERATURE indicator will light.

During cooling operation

1. Touch TEMPERATURE pad.

2. TouchTEMPERATUREandTIMERsettingpad

to adjust temperature setting.

•It can be set within the range of 64°F to 86°F.

TEMP.

'•••Lower temp.

setting.

"•••Raise temp.

setting.

The latest temperature setting will be memorized and will appear on the display the next time it's turned on.

NOTE: In cases of power outages or when unit is disconnected; when the power is restored or unit is plugged in, the unit

and display will return to the preset conditions of 74 °F and HIGH COOL.

However the unit will not automatically turn back on.

AF-T908X

AF-R908X

AF-R1108X

AF-R1208X

NOTES ON FAN SPEED

Fan and cooling at maximum performance.

Unit is preset at factory to HIGH COOL.

Fan operates at medium speed; cooling power at medium.

Cooling for sleeping comfort with low fan speed.

FAN ONLY OPERATION

This setting can be used to circulate air whenever cooling is not desired.

The fan will operate at medium speed.

PROCEDURE PAD DISPLAY / INDICATOR

TO CHANGE FAN SPEED

SELECTOR

During operation

Touch SELECTOR pad and select the desired fan

speed.

•SELECTOR indicator will light in order

as you touch.

HIGH COOL

MED COOL

LOW COOL

FAN ONLY

HIGH COOL

MED COOL

LOW COOL

PROCEDURE PAD DISPLAY / INDICATOR

•SELECTOR indicator FAN ONLY will

light. After 10 seconds, the compressor

will stop and the unit will operate in FAN

ONLY mode.

During operation

Touch SELECTOR pad and select FAN ONLY.

SELECTOR

The fan speed setting or FAN ONLY setting of the latest speed will be memorized and will light the next time unit is turned

on.

ENERGY SAVER

During normal operation, the thermostat automatically controls cooling and the fan runs continuously whenever the air

conditioner is in operation. When the ENERGY SAVER is set, the thermostat automatically controls cooling and the fan

automatically stops when the compressor is not operating. (Fan will stop in 30 seconds after the compressor stops.)

PROCEDURE PAD DISPLAY / INDICATOR

ENERGY

SAVER

• ENERGY SAVER indicator will light.

• ENERGY SAVER indicator will go off.

ENERGY

SAVER

During cooling operation

1. Touch ENERGY SAVER pad.

2. To cancel, touch

ENERGY SAVER pad again.

NOTE : ENERGY SAVER cannot be set during FAN ONLY mode operation.

AF-T908X

AF-R908X

AF-R1108X

AF-R1208X

CHANGING AIR FLOW DIRECTION

Adjustthelouverstochangethedirectionofairflow

for uniform and efficient cooling of the room.

EXHAUST

If air in your room is stale, set the EXHAUST

lever to the OPEN position. This will exhaust

stale air to the outside. The EXHAUST lever

shouldnormallybekeptintheCLOSEDposition

during cooling for maximum efficiency.

ITEMS PACKED WITH THIS UNIT

No. Accessories Q'ty

1Right closure assembly 1

2Left closure assembly 1

3Window sash foam seal 1

4Window sash foam seal

(adhesive type) 1

5Bottom gasket 1

6Screws L=1", (25.4mm) 8

7Screws L=13/32", (10mm) 6

8only for models

Remote control 1

9AF-R908X Battery 2

0AF-R1108X

Remote control hook

AF-R1208X

qFront panel assembly 1

x 8

x 6

x 2

SUGGESTED TOOLS

1. Screw driver (medium size Phillips) 2. Tape measure or ruler 3. Knife or scissors

INSTALLATION

NOTE:Thesemodelscanalsobeinstalledthroughthewallwiththeoptionalthroughthewallmountingkit,modelAZ-80WK.

To order this kit either contact your dealer or call 1-800-BE-SHARP. The wall opening dimensions for through the

wall installation are: 25" (635mm) (W) x 17 1/4 " (438mm) to 17 3/4" (451mm) (H) x 4" (102mm) minimum (D).

Complete instructions are included with the wall mounting kit.

WARNING: Make sure the unit is turned off and unplugged

before working.

1-1. Cut the window sash foam seal (adhesive type) to the proper length and

attach it to the underside of the window sash.

1-2. Attach the bottom gasket to the outer side of the window sill.

bottom gasket

window sash foam seal

(adhesive type)

CLOSED OPEN

EXHAUST Lever

Vertical louvers

Adjusts LEFT/RIGHT air flow

Horizontal louvers

Adjusts UP/DOWN air flow

INSTALLATION INSTRUCTIONS

AF-T908X

AF-R908X

AF-R1108X

AF-R1208X

Front panel

Screws

Remove the pad.

Closure assembly

3-1. Unscrew the 6 stopper screws of the cabinet. Keep the 4

screws from the top and front , as they will be used later.

3-2. Slide the chassis out from the cabinet by pulling on the hand

hold located at the bottom center of the chassis.

3-3. Remove the pad in side of the compressor.

CAUTION: Do not remove any material (ex. styrofoam, etc.) from

inside the unit.

4. Insert the right closure assembly and the left closure assembly

into the top angle and the bottom channels.

Secure the right and left closure to the cabinet with 6 of the

provided screws. (L= 13/32", 10 mm)

5. Open the window sash and place the cabinet on the sill. The

cabinet should be inclined backward by approx. 3/8 inch (9.5

mm).

Close the window sash securely behind the top angle.

6. Insert the closure assemblies on both sides into the rails of

the jamb.

About

3/8inch(9.5mm)

Indoor

side

Jamb

(Left)

Sill

1/2 inch (13mm)

Closure assembly

(Left)

Stool

Closure assembly

(Left)

2. Open the box of the front panel assembly and take out the front

panel and 2 screws.

AF-T908X

AF-R908X

AF-R1108X

AF-R1208X

INSTALLATION INSTRUCTIONS

Top angle

7-1. Secure the cabinet to the window stool with 3 screws (L=1", 25.4 mm),

working from the inside of the cabinet.

7-2. Securethe topangleandthe closureassembliestothe windowsashwith

3 screws (L=1", 25.4 mm).

7-3. Secure the closure assemblies to the sill with 2 screws (L=1", 25.4 mm).

8-1. Slide the chassis back into the cabinet.

8-2. Replace the 4 screws removed in step 3 to the top and side of the

cabinet.

10.Cut the window sash foam seal to the proper length and seal the

opening be- tween the top of the inside window sash and the outside

window sash. Window sash foam seal

9-1. Replace the front panel. Slip the exhaust lever through the opening

betweenhorizontal louver and frontpanel,andthenhook the cabinet top.

CAUTION: Take care not to damage the exhaust lever with the front

panel.

9-2. Screw the front cabinet on at the bottom corners with 2 screws removed

in step 2.

Exhaust Lever

Front

Panel

Horizontal

Louver

AF-T908X

AF-R908X

AF-R1108X

AF-R1208X DISASSEMBLING PROCEDURE

CAUTION: DISCONNECT THE ROOM AIR CONDITIONER FROM THE POWER SUPPLY BEFORE ANY SERVICE

1. Unscrewthetwoscrewsholdingthe front panel on each

side.

2. Remove the front panel by pulling it at the lower corner

toward you about 1 inch and next lift up and pull it

toward you.

3. Unscrew the four screws holding the cabinet.

Two screws are on top side.

Two screws are on each side.

4. Slide the chassis away from the cabinet by pulling on

each corner of the base pan.

5. Unscrew the four screws holding the control unit.

Two screws are on front side.

Two screws are on right side.

6. Unscrew the one screw holding the power supply cord.

7. Pull out thermistor holder.

8. Unscrew the one screw holding earth wire code.

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