SONY AFR125CX Service Manual

SER VICE MANU AL

AIR CONDITIONER

AF-R50CX
AF-R55CX
AF-R60CX

AF-R50CX
AF-R55CX
AF-R60CX
AF-R70CX

S3205AFR07CX/

MODELS

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.

TABLE OF CONTENTS

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

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

OPERATION INSTRUCTUINS ............................................................................................................................. 5

INSTALLATIOIN INSTRUCTIONS ......................................................................................................................14

DISASSEMBLING PROCEDURE....................................................................................................................... 16

HOW TO REPAIR REFRIGERATION ................................................................................................................ 20

ELECTRICAL COMPONENT TEST .................................................................................................................... 23

MICROCOMPUTER CONTROL SYSTEM ..........................................................................................................24

TROUBLESHOOTING GUIDE ............................................................................................................................28

COOLING LOAD ESTIMATE FORM ...................................................................................................................33

RUNNING CONDITION .......................................................................................................................................35

PACKING AND ACCESSORIES ......................................................................................................................... 37

REPLACEMENT PARTS LIST ............................................................................................................................38

AF-R70CX

Page

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

sales service only.
The contents are subject to change without notice.

1

AF-R50CX
AF-R55CX
AF-R60CX
AF-R70CX

SPECIFICATIONS

Models

AF-R50CX, AF-R55CX

AF-R60CX AF-R70CX
Cooling capacity BTU/h 5000 6000 7000
Moisture removal Pints/h 1.0 1.3 1.8

ELECTRICAL DATA

Phase Single
Rared frequency Hz 60
Rated voltage Volts 115
Rated current Amps 4.6 5.5 6.3
Rated input Watts 500 600 700
Power factor % 95 95 97
EER BTU/Wh 10.0 10.0 10.0

COMPRESSOR

Type (Hermetically sealed rotary type)
Model, Motor output

RM5455GQ86, 400W

39R141AA-04P

, 460W

RM5470GQ86, 550W

REFRIGERANT SYSTEM

Evaporator Louver fin, Grooved tube, 7mm, Hair pin
Condenser Louver fin, Grooved tube, 7mm, Hair pin
Control O.D. x I.D. x Length x Q'ty(mm) 2.7 x 1.1 x 400 x 1 2.7 x 1.2 x 700 x 1 2.7 x 1.3 x 600 x 1
(Capillary tube)
Refrigerant volume R-22(OZ) 8.5 9.2 11.3
(Factory change)

NET DIMENSIONS

Width Height Depth

inches(mm)

17-23/32(450) x 14-9/16(370) x 15-1/4(387)

Net Weight lbs 46 47 50

GROSS DIMENSIONS

Width Height Depth

inches(mm)

20-7/8(530) x 18-1/8(460) x 18-3/8(467)

Gross Weight lbs 51 52 56

FAN SYSTEM

Indoor side(Evaporator) Centrifugal fan
Outdoor side(Condenser) Propeller fan
Air flow rate(indoor side) CFM High / Med / Low

195 / 175 / 150 190 / 170 / 145

OTHERS

Safety devices Compressor: Overload relay

Fan motor: Internal thermal protector
Air filter Polypropylene net
Power cord length ft 6.0
Power plug type 125V, 10A

2

ELECTRICAL PARTS

Models

AF-R50CX, AF-R55CX

AF-R60CX AF-R70CX
Running capacitor 250V-40µF 250V-25µF 250V-40µF
Fan capacitor 250V-6µF
Thermistor 15kΩ at 78˚F
Fan motor OBM-2016K1

(MLA998)

Overload relay MRA99484 B200-130-141E KA-122LAI21

WIRING DIAGRAM

AF-R50CX
AF-R55CX
AF-R60CX
AF-R70CX

POWER SUPPLY CORD

115V 60Hz

NON RIBBED

RIBBED

RUNNING
CAPACITOR
250V 40µF

FAN MOTOR
CAPACITOR
250V 6µF
BL

BK

123654

BK

BL

THERMAL
PROTECTOR

BK

BL

GR

COMPRESSOR

GYREOR

M.C

IN

OUT

OVERLOAD
PROTECTOR

H

M

A.C

R

RE

GY

RE
OR
WH

WH

L

C

CONNECTOR

FAN MOTOR

EARTH

GR

MOTOR

BK

BK

3A 125V

MRY

S

WH

GY

FU1
CONTROL
BOARD UNIT

NR

CNR1
CNR2

8
7
1
3
5

BCN1

CNR3

C1

TR

BCN2

RY1
RY2
RY3

BCN3

WIRE COLOR

: BLACK

BK

: BLUE

BL

: RED

RE

: WHITE

WH

: GREEN

GR

: GRAY

GY

: ORANGE

OR

THERMISTOR

CN1

(

ROOM TEMP

YELLOW TH1

CN2

CN3

)

DISPLAY
BOARD
UNIT

Figure W-1. Wiring diagram for AF-R50CX, AF-R55CX and AF-R70CX

POWER SUPPLY CORD

115V 60Hz

NON RIBBED

RIBBED

RUNNING
CAPACITOR
250V 25µF

FAN MOTOR
CAPACITOR
250V 6µF
BL

BK

123654

BK

BL

THERMAL
PROTECTOR

BK

BL

GR

COMPRESSOR

GYREOR

M.C

IN

OUT

OVERLOAD
PROTECTOR

H

M

A.C

R

RE

GY

RE
OR
WH

WH

L

C

CONNECTOR

FAN MOTOR

EARTH

GR

MOTOR

BK

BK

3A 125V

MRY

S

WH

GY

FU1
CONTROL
BOARD UNIT

NR

CNR1
CNR2

8
7
1
3
5

BCN1

CNR3

C1

TR

BCN2

RY1
RY2
RY3

BCN3

WIRE COLOR

: BLACK

BK

: BLUE

BL

: RED

RE

: WHITE

WH

: GREEN

GR

: GRAY

GY

: ORANGE

OR

THERMISTOR

CN1

(

ROOM TEMP

YELLOW TH1

CN2

CN3

)

DIS

Figure W-2. Wiring diagram for AF-R60CX

3

AF-R50CX
AF-R55CX
AF-R60CX
AF-R70CX

EXTERNAL DIMENSIONS.

17-23/32"

33-7/16" (full opened)

21-21/32" (full closed)

4-1/8"

15-1/4"

1-15/32"

13-5/8"

15-11/16"

4

PARTS NAMES

UNIT

OPERATION INSTRUCTIONS

AF-R50CX
AF-R55CX
AF-R60CX
AF-R70CX

3

4

2

1

CONTROL PANEL

AF-R50CX, R60CX, R70CX

5

6

7

1Front Cabinet
2Air Inlet (Indoor Side)
3Horizontal Louvers
4Vertical Louvers

8

5Air Outlet (Indoor Side)
6Control Panel
7Rear Cabinet

9

8Air Inlet (Outdoor side)
9Filter (Pull the filter handle

10

to the right to remove.)

0Filter Handle
qPower Cord

11

AF-R55CX

2

1

11

F

hr

3

COOL / FAN TEMP

SELECTOR

4

5

TIMER

ON/OFF

POWER

ON/OFF

ENERGY

SAVER

6

8

7

10

9

1Receiver window for remote control signal
2Display
3SELECTOR indicator
4SELECTOR pad
5TEMPERATURE setting pad

----Lower temp. ----Raise temp.

2

1

11

F

hr

3

COOL / FAN TEMP

SELECTOR

4

5

TIMER

ON/OFF

POWER

ON/OFF

ENERGY

SAVER

6

8

7

10

9

6TIMER ON/OFF pad
7TIMER indicator
8ENERGY SAVER pad
9ENERGY SAVER indicator
0POWER ON/OFF pad
qPOWER indicator

5

AF-R50CX
AF-R55CX
AF-R60CX
AF-R70CX

COOLING OPERATION

SELECTOR indicator

POWER
indicator

Touch POWER ON/OFF pad.

1

• The unit is preset at 74°F and HIGH
COOL. This will show in the display
when the power is first turned on.

COOL / FAN TEMP

SELECTOR

F

hr

TIMER

ON/OFF

POWER

ON/OFF

ENERGY

SAVER

• POWER indicator and SELECTOR
indicator (COOL) will light.

To turn off the unit, touch POWER

2

ON/OFF pad again

• POWER indicator and SELECTOR

POWER ON/OFF pad

indicator will go off.

TO CHANGE TEMPERATURE SETTING

During cooling operation

.

Touch the TEMPERATURE setting pad to
adjust the temperature setting.

---Lower temp.

---Raise temp.

COOL / FAN TEMP

SELECTOR

F

hr

TIMER

ON/OFF

POWER

ON/OFF

ENERGY

SAVER

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

TEMPERATURE setting pad

• Display will change as you touch
the pad.

NOTE:

• The latest temperature setting will be memorized and will appear on the display the next time

the unit is turned on.

• In cases of power outages or when the unit is disconnected; when the power is restored or the
unit is plugged in, the unit and display will return to the preset conditions of 74°F and HIGH
COOL. The unit will not automatically turn back on. The user must touch POWER ON/OFF to
resume opertion.

6

TO CHANGE FAN SPEED AND OPERATION MODE

AF-R50CX
AF-R55CX
AF-R60CX
AF-R70CX

SELECTOR indicator

COOL / FAN TEMP

SELECTOR

F

hr

TIMER

ON/OFF

POWER

ON/OFF

ENERGY

SAVER

SELECTOR pad

NOTES ON OPERATION MODE:

MODE

HIGH COOL

SELECTOR DISPLAY

COOL

During operation

Touch SELECTOR pad and select the
operation mode and fan speed.

• SELECTOR indicator and display will light
in order as you touch.

HIGH COOL MED COOL

MED FANLOW FAN

Cooling operation with high fan speed.

LOW COOL

HIGH FAN

MED COOL

LOW COOL

HIGH FAN

MED FAN

LOW FAN

COOL

COOL

FAN

FAN

FAN

Cooling operation with medium fan speed.

Cooling operation with low fan speed.

Fan only operation with high fan speed.

Fan only operation with medium fan speed.

Fan only operation with low fan speed.

• The latest operation mode will be memorized and the selector indicator and display will light
when the unit is turned on.

• In fan only operation, the temperature display will go off.

• When the SELECTOR is changed to fan only operation from cooling operation, it will take 5

seconds for the compressor to stop.

7

AF-R50CX
AF-R55CX
AF-R60CX
AF-R70CX

ENERGY SAVER

During normal operation, the thermostat automatically controls cooling and the fan runs continuously.
When the ENERGY SAVER is selected, the thermostat automatically controls cooling and the fan
automatically stops when the compressor is not operating. (Fan will stop 30 seconds after the
compressor stops. After the fan stops, the fan is programmed to rotate for approx. 2 minutes to
detect room temperature. This will occur within a 20 min time span.)

ENERGY SAVER indicator

COOL / FAN TEMP

SELECTOR

F

hr

TIMER

ON/OFF

POWER

ON/OFF

ENERGY

SAVER

During cooling operation

Touch ENERGY SAVER pad.

1

• ENERGY SAVER indicator will light.

To cancel, touch ENERGY SAVER

2

pad again.

• ENERGY SAVER indicator will go
off.

ENERGY SAVER pad

NOTE: ENERGY SAVER cannot be set during fan only (HIGH FAN, MED FAN, LOW FAN)

operation.

TO CHANGE AIR FLOW DIRECTION

The horizontal louvers are used to adjust the UP / DOWN direction of air flow, and the vertical
louvers are used to adjust the LEFT / RIGHT direction of air flow for uniform and efficient cooling
of the room.

Horizontal louvers

Adjust UP/DOWN air flow

Vertical louvers

Lever

Adjust LEFT/RIGHT air flow

8

ON TIMER OPERA TION

• This unit has a built-in timer that can be programmed to start the unit up to 12 hours in advance.
You can set the timer to start in increments of 30 minutes (0.5 hours) up to 9.5 hours in advance
of the start time, or in 1 hour increments from 10 to 12 hours in advance of the start time.

• The unit will start automatically according to your setting.

When the unit is not operating

SELECTOR indicator

Touch the TIMER ON/OFF pad to set the delayed
start time.

1

F

hr

POWER

ON/OFF

• The time setting will change as you touch the
pad. The display will change as follows;

AF-R50CX
AF-R55CX
AF-R60CX
AF-R70CX

COOL / FAN TEMP

SELECTOR

TIMER

ON/OFF

TIMER ON/OFF pad

TIMER indicator

(If you wish to start the operation
6 hours and 30 minutes later, set
the delay time as shown above.)

ENERGY

SAVER

Preset(0.5h)

Previous setting

0.5h

CL(cancel)

1.0h

1.5h 10h
11h12h

• The timer will be set, 5 seconds after the
TIMER ON/OFF pad is touched for the last
time.

• SELECTOR indicator and TIMER indicator
will light.

• The time display will count down the
remaining time.

• The unit will start when the set time expires.
The temperature setting will be displayed.

TO CANCEL THE TIMER SETTING

Touch the TIMER ON/OFF pad again after the
timer is set, or press the TIMER ON/OFF pad
until CL(cancel) appears on the display.

NOTES FOR TIMER SETTING AND OPERATION:

• After setting the TIMER, change the temperature and fan speed settings as shown on pages 11
and 12. When the temperature is set in the timer mode, the temperature will show in the display
for 5 seconds and then return to the time display.

• The last setting used will be memorized and will appear on the display the next time you operate
the unit with the TIMER function.

• If a power failure occurs while the ON or OFF TIMER is set, the TIMER memory will be cancelled
and will not resume even after power is reinstated. The unit will not automatically start.

• OFF TIMER OPERATION can also be set with the REMOTE CONTROL.

9

AF-R50CX
AF-R55CX
AF-R60CX
AF-R70CX

OFF TIMER OPERA TION

• T

his unit has a built-in timer that can be programmed to shut the unit off up to 12 hours in advance.
You can set the timer to stop in increments of 30 minutes (0.5 hours) up to 9.5 hours in advance of
the stop time, or in 1 hour increments from 10 to 12 hours in advance of the stop time.

• The unit will stop automatically according to your setting.

When the unit is operating

1

F

hr

POWER

ON/OFF

Touch the TIMER ON/OFF pad to set the delayed
stop time.

• The time setting will change as you touch the
pad. The display will change as follows;

COOL / FAN TEMP

SELECTOR

TIMER

ON/OFF

ENERGY

SAVER

TIMER ON/OFF pad

TIMER indicator

(If you wish to stop the operation
10 hours later, set the delay time
as shown above.)

Preset(0.5h)

Previous setting

0.5h

CL(cancel)

1.0h

1.5h 10h
11h12h

• The timer will be set, 5 seconds after the
TIMER ON/OFF pad is touched for the last
time.

• TIMER indicator will light.

• The time display will count down the

remaining time.

• The unit will stop when the set time expires.
All indicators and displays will go out.

TO CANCEL THE TIMER SETTING

Touch the TIMER ON/OFF pad again after the
timer is set or, press the TIMER ON/OFF pad until
CL(cancel) appears on the display.

10

USING THE REMOTE CONTROL

INSTALLING BATTERIES

Use two size-AAA (R03) batteries.

Remove the battery compartment cover.

1

Insert the batteries in the compartment,

2

making sure the and polarities
are properly aligned.

Replace the cover.

3

NOTES:

• The battery life is approximately one year with normal use.

• When you replace the batteries, always use two new ones of the same type.

• If the remote control does not operate normally after replacing the batteries, take out the

batteries and replace them again after 30 seconds.

• If you will not be using the unit for a long time, remove the batteries from the remote control.

Battery compart­ment cover

AF-R50CX
AF-R55CX
AF-R60CX
AF-R70CX

ATTACHING THE REMOTE CONTROL HOOK

• Remove the backing from the remote control hook.

• Attach the hook onto the left side of the unit's front

cabinet.

• To prevent loss, hook the remote control on the front
cabinet when not in use.

Remote control hook

Rear Cabinet

Front Cabinet

HOW TO USE THE REMOTE CONTROL

Point the remote control towards the unit's re­ceiver window and press the desired button. A
beep will sound when the unit receives the signal.

• Make sure no objects, such as curtains, block the
receiver window.

• The remote control operates from up to 20 feet (6
meters) away.

• The beep will also sound when each pad on the
control panel is touched.

CAUTION:

• Do not expose the receiver window to direct sunlight. This can adversely affect its operation. In
such case, close the curtains to block the sunlight.

• Use of a fluorescent lamp in the same room may interfere with the transmission of the signal.

• The unit may be affected by signals emitted from the remote control of a television, VCR or other

equipment used in the same room.

• Do not leave the remote control exposed to direct sunlight or near a heater. Protect the remote
control from moisture and shock which can discolor or damage it.

11

AF-R50CX
AF-R55CX
AF-R60CX
AF-R70CX

OPERATING WITH THE REMOTE CONTROL

TRANSMITTER

POWER

ON/OFF

TEMP.

POWER ON/OFF button

Push to start or stop the operation.

TEMP.

SELECTOR

SET TIMER/OFF

TEMP.
TEMP.

SELECTOR button

Push to change fan speed and operation
mode.
Fan speed and operation mode selec­tions are shown to the right.

SET TIMER/OFF button

---Raise temp. setting 1°F at a time.

---Lower temp. setting 1°F at a time.

HIGH COOL
MED COOL
LOW COOL
HIGH FAN

MED FAN
LOW FAN

Push to set delay "OFF" timer during operation.

• The time setting will change as you push the button. The display
will change as follows;

Preset(0.5h)

Previous setting

0.5h

CL(cancel)

• The last OFF time setting is memorized by the unit and will
appear on the display when the button is pushed.

• The timer will be set, 5 seconds after the SET TIMER/OFF button
is pushed for the last time.

• If you wish to cancel the timer, push the SET TIMER/OFF button
again after the time is set or, push the SET TIMER/OFF button
until CL (cancel) appears on the display. A double beep will
sound when the timer is cancelled.

• The "ON" TIMER cannot be set with the remote control.
It can only be activated by the TIMER ON/OFF pad on the unit's
control panel ( See page 9).

1.0h

1.5h 10h
11h12h

To change temperature setting when ON/OFF timer is in use

1. Push a TEMPERATURE setting button.
The current set temperature will be recalled on the unit's display.

2. Use the TEMPERATURE setting buttons to set the new temperature.
The new set temperature will show on the display for 5 seconds and return to
the time display.

12

ACCESSORIES

No.

Accessories Q'ty

AF-R50CX
AF-R55CX
AF-R60CX
AF-R70CX

1

1
2

3

4

5

6
7
8
9

10
11

Right closure assembly 1
Left closure assembly 1
Window sash foam seal 1
Window sash foam seal 1

(adhesive type)
Bottom gasket 1
Screws (L=1", 25.4mm) 7
Screws (L=

13

/32", 10mm) 6
Base pan angle 2
Remote control 1
Battery 2
Remote control hook 1

2

3

4

5

6

6

7

7

8

9

10

2

2

11

SUGGESTED TOOLS

1. Screw driver (medium size Phillips)

2. Tape measure or ruler

3. Knife or scissors

13

AF-R50CX
AF-R55CX
AF-R60CX
AF-R70CX

INSTALLATION

WARNING: Make sure the unit is turned off and unplugged before working.

Cut the window sash foam seal (adhesive
type) to the proper length and attach it to

1

the underside of the window sash.

Insert the right closure assembly and the
left closure assembly into the top angle

2

and the bottom channels.
Secure the right and left closure to the
cabinet with six of the provided screws.

13

/32", 10mm)

(L=

Jamb

Sill

Sash

Window sash foam seal
(adhesive type)

Closure assembly

Open the window sash and place the air
conditioner on the sill.

3

Balance the unit on the sill and close the
window sash securely behind the top
angle.

WARNING:

At this step, make sure the unit is inclined
approximately 1 cm (
If the unit is not properly inclined, the water
collected in the bottom tray during opera­tion will not drain properly and may flow into
the room where the air conditioner is in­stalled.

Insert the bottom gasket into the space
between the window sill and the bottom of

4

the unit to seal outside air.

3

/8") to the back.

sill

unit

incline backwards approximately
1cm (3/8")

If there is space between the bottom
channel and the sill, fill the gap with a thin
board or other hard filler.

14

Bottom gasket