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

Name: Sharp AY-A07B
Brand: Sharp
SKU: 35069
Rating: 4 (1 reviews)

Model: AY-A07B
Pages: 48
Size: 1.52 MB
Type: PDF
Document: Service Manual
Brand: Sharp
Device: Air Conditioner
File: ay-a07b.pdf
Date: 2018-11-20

PREV: Sharp AY-A07 (serv.man4) Service Manual / Technical Bulletin

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AH-A07BE/09BE/12BE
AY-A07BE/09BE/12BE
AU-A07BE/09BE/12BE
AE-A07BE/09BE/12BE
17
7. Current control
This system, in order to prevent overcurrent during
heating operation, controls the outdoor fan motor and
changes the indoor fan motor speed by detecting total
current.  When the current exceeds P2, the outdoor fan
motor is automatically turned off, and when the current
falls below P4, the outdoor fan motor is turned on.
When the current exceeds P3 and the indoor fan speed
shifts down because of cold air (5. Preheat air flow), the
changes in the indoor fan speed shifts up as follows,
from "off" to "HUL", or from "HUL" to "HL". And when
the current falls bellow P5, the indoor fan speed shift up
is canceled.
Figure Y-10
8. Freeze preventive
When the indoor pipe temperature falls below 0˚C
during cool operation or dry operation, the compressor
is turned off.
9. Defrost
The defrost timer (integrating the operation time of
compressor) counts time with microcomputer during
heat operation.
Frost of outdoor pipe is estimated by indoor pipe
temperature (TH2), room temperature (TH1), indoor
fan speed and operation state of compressor.
In the defrost operation, first the compressor is turned
off, the fan speed is set to “HUL” and the  outdoor fan
motor is turned off.
30 seconds later the indoor fan motor is turned off, 60
seconds later the reverse valve is turned off, and the
compressor is turned on. In the end of defrosting, the
compressor is turned off, the outdoor fan motor is
turned on, 60 seconds later the reverse valve is turned
on, and the compressor is turned on, starting heat
operation. At this time, the indoor fan motor is turned
off or the fan speed is set to “HUL” if preheat air flow
function is effective.
Figure Y-11
Figure Y-12
10. Delayed operation of the reverse valve
When the heat operation is shut down or the operating
mode is switched from heat to cool or dry, or vice versa,
the reverse valve is switched after 3 minutes.
11. Test run
If the "AUX" button on the unit is pressed for 5 seconds
or more during operation, cool test operation starts.
The operation LED (red) flickers during test run.
To put the system in the heating test run mode, start the
cooling operation and select the heating mode on the
remote control. In cool and  heat mode continuous
compressor on operation is performed. In dry mode the
operation is in dehumidifying zone. In fan only mode
the indoor fan motor runs continusly.
12.Timer
12-1 ON/OFF TIMER
When the unit operates during one hour after
the OFF-time is set, thermostat setting is
automatically shifted (+1˚C in cool operation
and dry operation, -3˚C in heat operation, 16˚C
- 32˚C). When the ON-timer is set in heat
operation and cool operation, operation starts
before 0 to 30 minutes(depends on the room
temperature) so that preset temperature is
obtaind at set time.
12-2 ONE-HOUR TIMER
When ONE-HOUR timer is set, the unit turns
off automatically after one hour. The one hour
timer operation has priority over other time
operation, such as the TIMER ON and TIMER
OFF. If the ONE-HOUR TIMER button is
pressed again during operation, the unit will
operate additionally for another one hour.
Outdoor
Fan motor 
OFF
Indoor
Fan motor
Shift UP
Compressor
OFF
Time
Input current
Current transition
P1   5.1A     6.6A     10.0A
P2   4.3A     5.3A     8.0A
P3   3.9A     4.7A     7.2A
P4   3.3A     3.8A     6.1A
P5   3.0A     3.4A     3.5A
AY-A07BE AY-A09BE AY-A12BE
Switch ON
Heating
Heating
Heating
Min. 
40min.
Max.
8min.
(AY--A07BE)
9min.
(AY--A09/A12BE)
Min.
30min.
Max.
8min.
(AY--A07BE)
9min.
(AY--A09/A12BE)
Defrost
Defrost
Defrost start
Compressor
Reverse
Valve
Outdoor
Fan Motor
Indoor
Fan Motor
Preheat Air
Flow Control
30sec.
MAX. 9min.(AY-A09/A12BE)
MAX. 8min.(AY-A07BE)
60sec.
60sec.
ON
OFF
ON
OFF
ON
OFF
ON
OFF
60sec.
HUL

18
AH-A07BE/09BE/12BE
AY-A07BE/09BE/12BE
AU-A07BE/09BE/12BE
AE-A07BE/09BE/12BE
ON
OFF
ON
OFF
ON
ON
ON
OFF
ON
ON
OFF
OFF
ON
OFF
ON
ON
ON
OFF
ON/UL/OFF
ON
ON
UL/OFF
ON
OFF
OFF
OFF
ON
L/UL
UL/D
OFF
D/OFF
OFF
OFF
OFF
Mode
Compressor
Outdoor
Fan Motor
Cooling
Circulating
Normal
Preheat
Air Flow
Control
ON Defrost
Indoor
Fan Motor
Valve
Coil
C
O
O
L
H
E
A
T
D
R
Y
Cooling
Circulating
Dehumidiflying
Room temperature
Preset temperature
R o o m  
t e m p e r a t u r e
t r a n s i t i o n
C3
C2
C1
S t a t e s   1   &   5   : " C A H "
S t a t e s   2   &   4   :   " C M "
S t a t e s   3   :   " C A L "
a .   C O O L   o p e r a t i o n
3
4
5
1
2
Room temperature
P r e s e t   t e m p e r a t u r e
R o o m
t e m p e r a t u r e
t r a n s i t i o n
S t a t e s   1   &   7   :   " H A M "  
S t a t e s   2   &   6   :   " H M "  
S t a t e s   3   &   5   :   " H A L "  
S t a t e s   4   :   " H U L " ,   " H L " ,   O F F
H1
H2
1
H4
H3
6
5
4
7
2
3
b .   H E A T   o p e r a t i o n
13. Automatic air conditioning
When automatic air conditioning is selected, the
operation mode and preset temperature are set
automatically according to the room temperature on
starting operation.
Table Y-4
When DRY mode is selected by the micro computer
15. Outputs in each operation mode
Table Y-5
16. Power on start
If the connecting wire "POWER ON" (JP16) is cut on
the PWB ass'y, when the power is supplied by turning
on a circuit breaker, the air conditioner automatically
starts of operation in "AUTO".
(Refer to Figure L-2. Printed Wiring Board.)
17. AUTO RESTART
Power failure occurs during operation, the unit will
retart in the same operation mode as before after
power recovery.
(Refer to Figure L-2. Printed Wiring Board.)
18.Test mode
Keep pushing the "AUX." buttons and supply the
power, the system will go to the test  mode. In this
mode, the output of operation is switched by pushing
the ""AUX." button in the unit or the "OI" button in the
remote controller. Normal outputs are shown in Table
Y-6 and Y-7.
with AUTO operation, the fan speed lamps on the
indoor unit panel will indicate identically with the fan
speed symbols on the remote control dispaly, as the
FAN spped setting is changed accordingly. Despite,
the actual fan speed will not change, as it is determined
automatically by the micro computer.
14. Automatic fan speed
When the automatic fan speed is selected in cool or
heat operation, the fan speed is automatically changed
by the thermostat lines C1 to C3 in cool operation, and
H1 to H4 in heat operation.
Figure Y-13
Figure Y-14
Room temperature
at operation start
Operation
Mode
Preset
Temperature
Above 28˚C
Below 21˚C
26˚C
26˚C    28˚C
24˚C    26˚C
21˚C    24˚C
25˚C
24˚C
Room temperature 
at operation start
23˚C
COOL
DRY
HEAT

AH-A07BE/09BE/12BE
AY-A07BE/09BE/12BE
AU-A07BE/09BE/12BE
AE-A07BE/09BE/12BE
19
19.Diagnosis procedure
When indoor fan motor is out of order or compressor lock occurs, the compressor, indoor fan motor, outdoor fan
motor, and louver are all stopped and the operation LED(red) turns on or off syncronously with the timimg of the
timer LED.
When the thermistor for room temperature or pipe temperature is open or short state, the operation LED turns on
or off syncrnoously with the timing of the timer LED by pushing continously for more than 5 seconds "AUX."
button during suspension of operation.
Timing chart of Timer LED and Operation LED of DIAGNOSIS PROCEDURE.
When "OI" button the remote controller or "AUX." button in the unit is pushed, the unit is free from DIAGNOSIS
PROCEDURE.
Indoor 
fan motor
Comp.-lock
Thermistor 
short state
Thermistor 
open state
Timer 
LED
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Operation 
LED
Operation 
LED
Operation 
LED
Operation 
LED
1sec.
1sec.
4sec.

20
AH-A07BE/09BE/12BE
AY-A07BE/09BE/12BE
AU-A07BE/09BE/12BE
AE-A07BE/09BE/12BE
Table Y-6  [AY-A07BE/A09BE/A12BE]
1 1
1 0
9
8
7
6
5
4
3
2
1
O N
O N
O F F
O F F
O N
O N
O F F
O N
O F F
O F F
O F F
O F F
O F F
O N
O F F
O N
O F F
O N
O N
O N
O F F
O N
O N
O F F
O N
O F F
O N
O N
O N
O F F
O N
O N
O F F
O F F
O F F
O F F
O F F
O F F
O F F
O F F
O N
O F F
O F F
O F F
O F F
O F F
O F F
O F F
O F F
O F F
O N
O N
O F F
O N
O N
O N
O F F
O F F CLOSE O F F
O F F
O F F
O F F
O F F
O F F
O F F
O N
O N
O N
O N
O N
O N
O N
O N
O F F
O N
O F F
O N
O F F
O N
O F F
O N
O F F
O N
O F F
O N
O N
O N
O F F
O F F
O F F
O F F
O F F
O N
O F F
O N
O N
O F F
O F F
O F F
O N
O N
O F F
O F F
O F F
O N
O N
O N
O F F
O F F
O F F
O N
O N
O F F
O F F
O F F
O N
O N
O N
O N
O N
O F F
CLOSE
O N
O F F
O N
O F F
O N
O N
O N
O N
O N
O F F
CLOSE
O N
O F F
O N
O F F
O F F
O F F
O F F
O N
O N
O F F
O F F
O N
O F F
O N
O F F
O N
O F F
O F F
O N
O N
O F F
O F F
O N
O F F
O N
O F F
O N
O F F
O F F
O N
O F F
O N
O F F
O F F
O N
O F F
O N
O N
O N
O F F
O N
O F F
O N
O F F
O F F
O N
O F F
O N
O N
O N
O F F
O F F
O F F
O N
O N
O F F
O F F
O N
O F F
O N
O F F
O F F
O F F
O F F
O N
O N
O F F
O F F
O N
O F F
O N
O F F
O F F
O F F
O F F
O F F
O N
O N
O F F
O F F
O N
O F F
O N
O N
O F F
O F F
O F F
O F F
O F F
O F F
O F F
O F F
O F F
O N
O N
O F F
O F F
O F F
O F F
O N
O N
O F F
O F F
O N
O F F
O N
O F F
O F F
O F F
O F F
O N
O N
O F F
O F F
O N
O F F
O N
O F F
O F F
O F F
O F F
O F F
O F F
O F F
O F F
O F F
O F F
O F F
O F F
O N
O F F
O F F
O F F
O F F
O F F
O F F
O F F
O F F
O F F
O F F
O N
O F F
O F F
O F F
O F F
O F F
O N
O F F
O N
O N
FLICK
O N
O N
O N
O P E N
O F F
O N
O F F
O F F
R E D
Y E L L O W
FAN SOFT
FAN LOW
L a m p s
L o u v e r
I n d o o r   f a n
O u t d o o r   f a n
4 - w a y   v a l v e
C o m p r e s s o r
FAN HIGH
A U T O
R E D
Y E L L O W
L a m p s
L o u v e r
I n d o o r   f a n
O u t d o o r   f a n
4 - w a y   v a l v e
C o m p r e s s o r
A U T O
R E D
Y E L L O W
L a m p s
L o u v e r
I n d o o r   f a n
O u t d o o r   f a n
4 - w a y   v a l v e
C o m p r e s s o r
A U T O
S t e p
A Y - A 0 7 B E
A Y - A 0 9 B E
A Y - A 1 2 B E
1
2
O N
O N
O N
O N
O P E N
O F F
O N
O F F
O F F
1
2
O N
O N
O N
O N
O P E N
O F F
O N
O F F
O F F
1
2
3
O N
O F F
O F F
O F F
O F F
O N
O F F
O N
O N
FLICK
3
O N
O F F
O F F
O F F
O F F
O N
O F F
O N
O N
FLICK
3
O N
O F F
O F F
O F F
O F F
O N
O F F
O N
O N
O F F
O N
O F F
O F F
O F F
O F F
O N
O F F
O N
O N
O N
O F F
4
1
2
3
: 7˚C      Room temp.      42˚C
         ON     
: 7˚C     (Room temp.) or (Room temp.)      42˚C
                      OFF  
: –2˚C     Pipe temp.     45˚C
         ON
: –2˚C     (Pipe temp.) or (Pipe temp.)      45˚C
         OFF
: 0.31V     (AN2 input voltage)      4.47V                                                                 ON
: 0.31V     (AN2 input voltage) or (AN2 input voltage      4.47V)
        OFF
4
: When Power on start is effective, 4-way valve is OFF.
O N
4
O N
4
FAN SOFT
FAN LOW
FAN HIGH
FAN SOFT
FAN LOW
FAN HIGH

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