DOWNLOAD Sharp AY-A07B Service Manual ↓ Size: 1.52 MB | Pages: 48 in PDF or view online for FREE

13

FROM 
TERMINAL 
BOARD
(POWER) " 1 "

FROM 
TERMINAL 
BOARD
(UNIT) " 1 "

FROM 
TERMINAL BOARD
(UNIT) " N "

FROM 
THERMISTOR

FROM 
LOUVER
(UPPER)

FROM 
LOUVER
(LOWER)

INDOOR 
FAN MOTOR
(R.P.M. SIGNAL)

INDOOR 
FAN MOTOR

14

1-1

COOL operation
In the “COOL” mode, the thermostat circuit is
controlled by four thermostat lines (C1 thru C4).

1-3

HEAT operation
In the “HEAT” mode, the thermostat circuit
is controlled by six thermostat lines (H01 thru
H4).

1-2

DRY operation
In the “DRY” mode, the thermostat circuit is
controlled by three thermostat lines (D1 thru
D3).

2-1

COOL operation
The compressor turns on or off, at the
thermostat lines C3 and C4. The outdoor fan
motor is also controlled with the compressor.

Room temperature

Preset temperature

Room 
temperature
transition

C3

C4

States 1 & 3 : Compressor ON
State 2 : Compressor OFF

1

2

3

18

32

C1

C2

C3

C4

17.5

18.5

19.5

20.5

31.5

32.5

33.5

34.5

Preset temperature (˚C)

Room temperature (˚C)

Room temperature(˚C)

Preset temperature (˚C)

18

32

D1

D2

D3

17.5

18.5

19.5

31.5

32.5

33.5

Preset temperature (˚C)

H4

H3

H2

H1

H02

H01

17

19

21

22

24

26

31.5

32.5

34.0

35.0

36.0

37.0

18

32

Room temperature(˚C)

15

2-2

DRY operation
On the switch on, the compressor always starts
to operate for 2 minutes with fan speed “DL” .
The microcomputer reads the room temperature
2 minutes after this first compressor operation.
This room temperature is set as the preset
temperature automatically.
The preset temperature ranges from 18˚C to
32˚C. When the room temperature is below
18˚C, the preset temperature is  set to 18˚C,
and when the room temperature is over 32˚C,
the preset temperature is set to 32˚C.
Dry operation is divided into three zones
(Cooling zone, Dehumidifying zone and
Circulating zone) by thermostat lines (D1 to
D3), and the compressor and the fan motor
are controlled in each zone as shown in Table
Y-1.

Room temperature

Preset temperature

Room 
temperature
transition

D3

D2

D1

States 1 & 5 : Cooling zone
States 2 & 4 : Dehumidifying zone
States 3 : Circulating zone

3

4

5

1

2

Room temperature

Preset temperature

Room
temperature
transition

States 1 & 3 : Compressor ON
States 2  : Compressor OFF/(ON)
                  (Hot-keep function)

H1

H2

3

1

2

Compressor

Cooling zone

Dehumidifying zone

Circulating zone

Fan speed

ON

"DH"

"DL"

"DL" or OFF

ON

OFF

2-3

Heat operation
The compressor turns on or off, at State  2  ,
turns on continuously at State  1  &  3 .

Fan speeds are given by the indoor fan motor, "DL"~"HH" which are available in the following operation mode.

Fan switch

DL

Fan speed

Fan switch (AUTO)

07BE TYPE

AY

AH

AY

AH

AY

AH

(r.p.m.)

630

630

690

690

750

750

710

710

740

740

840

840

710

710

760

760

840

840

750

750

790

790

860

860

830

830

910

910

930

930

900

900

990

990

970

970

950

950

1090

1090

1010

1010

700

750

850

830

920

920

850

950

950

900

1000

1000

950

1050

1040

990

1100

1080

09BE TYPE

12BE TYPE

DH

DRY

COOL

CL

COOL SOFT

CAL

CM

COOL LOW

CAH

CH

COOL HIGH

HUL

HL

HEAT SOFT

HEAT

HAL

HM

HEAT LOW

HAH

HH

HEAT HIGH

16

OFF

OFF

ON

ON

U1

U2

U1

U2

U2'

U2'

Within 3 minutes

Over 3 minutes

This function is intended to prevent cold air from being
discharged when the heating operation starts or when
defrosting.
When the indoor pipe temperature is below 29˚C at the
begining of the heat operation or after defrosting, the
indoor fan motor stays.
When the indoor pipe temperature gets higher than
29˚C, the fan motor is turned on at speed “HUL” after
compensation of starting.
When the indoor pipe temperature exceeds 35˚C, the
specified fan speed is restored. When the indoor pipe
temperature falls below 30˚C, the fan speed shifts
down to “HUL”. And, when the indoor pipe temperature
falls below 23˚C, the fan motor turns off. Then, over
29˚C , it turns on again at speed “HUL”.

This function automatically controls the on-off operation
of the indoor fan motor in accordance during the
heating operation, thereby preventing the air conditioner
from delivering a cold air when the compressor is off.
When the room temperature exceeds the thermostat
line “H1”, the compressor is turned off, and the indoor
fan motor is turned off after rotating at “HUL” for 30
seconds. 3 minutes and 10 seconds after turning off the
compressor, the indoor fan motor is turned on for 3
minutes and 20 seconds. At 10 seconds after turning
on the compressor, the indoor fan motor is turned  on.
The next compressor OFF time is for 3, 8 or more than
8 minutes according to the room temperature (the time
increases with a rise of room temperature) when 3
minutes elapse after turning on the compessor.

When overloading occurs during the heating operation,
this system controls the outdoor fan motor according to
the indoor pipe temperature to prevent the overloading
of the compressor and restrain the rise in high pressure.
When the indoor pipe temperature exceeds U1˚C, the
outdoor fan motor is turned off, and when the indoor
pipe temperature falls U2˚C, the outdoor fan motor
turns on.
If 3 minutes elapse after turning off outdoor fan motor,
the outdoor fan motor is turned on, when the indoor
pipe falls U2' ˚C,

Pipe temperature(˚C) 

24

29

30

35

OFF

UL

UL

UL

OFF

Preset

Fan speed

HH

HAH

HM

HAL

HL

HUL

53˚C

53˚C

52˚C

52˚C

U1

AY-A07BE

AY-A09BE

AY-A12BE

U2'

49˚C

53˚C

52˚C

49˚C

53˚C

52˚C

49˚C

49˚C

U2

54˚C

U2

53˚C

U'2

50˚C

U2

54˚C

U2

53˚C

U2'

50˚C

U2

Fan speed

LIne

MODELS

Compressor

ON

OFF

Indoor
fan motor

30sec.

time

UL

ON

OFF

3 min.

3 min.

10sec.

UL

30sec.

10sec.

Thermo off