Sharp AY-M09 Service Manual ▷ View online
17
AY-M09AE
AE-M18AE
AE-M18AE
16. Power on start
If the connecting wire "POWER ON" (JP8) 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-1.
Electronics Control Circuit Diagram.)
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-1.
Electronics Control Circuit Diagram.)
17. AUTO RESTART
Power failure occurs during operation, the unit will
retart in the same operation mode as before after
power recovery.
retart in the same operation mode as before after
power recovery.
18.Test mode
18-1 Indoor unit
Make terminals 1 and 2 of connector CN4 short-
circuited and supply the power.
Hereby the timer's period becomes shortened.
In this test mode, the control times are shortend
as follows.
circuited and supply the power.
Hereby the timer's period becomes shortened.
In this test mode, the control times are shortend
as follows.
The operation LED flicker's period not
in Test run shortened
The protector timer
The defrost timernot
Other controls; 1/60 (ex.; 3 min. to 3 sec.)
The defrost timernot
Other controls; 1/60 (ex.; 3 min. to 3 sec.)
18-2 Outdoor unit
Make terminals and of connector short circuited
and supply the power. Hereby the timer's period
becomes shorted. In this test mode, the control
times are shorted 1/10
and supply the power. Hereby the timer's period
becomes shorted. In this test mode, the control
times are shorted 1/10
19. Trouble suspension
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) turned off and the timer
LED(yellow) turns on or off as follows.
lock occurs, the compressor, indoor fan motor,
outdoor fan motor, and louver are all stopped and
the operation LED(red) turned off and the timer
LED(yellow) turns on or off as follows.
15. Outputs in each operation mode
Table Y-5
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.
operation mode and preset temperature are set
automatically according to the room temperature on
starting operation.
Table Y-4
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.
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.
a.COOL operation
Room temperature
Preset temperature
R o o m
t e m p e r a t u r e
t e m p e r a t u r e
t r a n s i t i o n
C3
C2
C1
States 1 & 5 :"M"
States 2 & 4 : "L"
States 2 & 4 : "L"
States 3 : "UL"
3
4
5
1
2
Figure Y-13
b. HEAT operation
Figure Y-14
Room temperature (˚C)
P r e s e t t e m p e r a t u r e (˚C)
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
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 "
S t a t e s 2 & 6 : " M "
S t a t e s 3 & 5 : " L "
S t a t e s 4 : " U L " / O F F
S t a t e s 2 & 6 : " M "
S t a t e s 3 & 5 : " L "
S t a t e s 4 : " U L " / O F F
H1
H2
1
H4
H3
6
5
4
7
2
3
ON
OFF
ON
OFF
ON
ON
ON
OFF
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
ON
OFF
OFF
OFF
OFF
Mode
Compressor
Outdoor
Fan Motor
Cooling
Circulating
Normal
Preheat
Air Flow
Control
Air Flow
Control
ON Defrost
FAN ONLY
Indoor
Fan Motor
Valve
Coil
C
O
O
O
O
L
H
E
A
E
A
T
D
R
Y
R
Y
Cooling
Circulating
Dehumidiflying
Timer LED ON
(yellow)
(yellow)
OFF
1 sec.
1 sec.
In this case, when "ON/OFF" button in the remote
control or "AUX" button in the unit is pushed, the unit
is out of "Trouble suspension".
control or "AUX" button in the unit is pushed, the unit
is out of "Trouble suspension".
Room temperature
at operation start
at operation start
Operation
Mode
Mode
Preset
Temperature
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
at operation start
23˚C
COOL
DRY
HEAT
18
AY-M09AE
AE-M18AE
AE-M18AE
TROUBLE SHOOTING GUIDE
Trouble diagnosis
This unit has a fuction to diagnose major troubles by itself.
Six kinds of troubles can be detected and informed.
Before repair, first call up the trouble information with the self-disgnosis function, and check it.
Six kinds of troubles can be detected and informed.
Before repair, first call up the trouble information with the self-disgnosis function, and check it.
1. Self-diagnosis function
(1) In case of some troubles(error No. 1 thru 3), the operation will be stopped if any trouble occurs.
LED on the indoor unit will ficker to automatically inform the trouble occurrence.
The timer LED fickers as shown in Fig. T-1.(The operation LED is turns off.)
The timer LED fickers as shown in Fig. T-1.(The operation LED is turns off.)
Fig. T-1
(2) Call up of trouble information(For details, refer to the self-diagnosis table in Page 20.)
When the operation is stopped, continuously press both AUX button and TEST RUN button for 5 seconds,
the error information display mode will be selected to ficker the timer LED and operation LED in order to
display the error information.
Even through the buttons are released, it will be continously displayed to erase the error display, press the
"OI" Button in the remote control or AUX button.
the error information display mode will be selected to ficker the timer LED and operation LED in order to
display the error information.
Even through the buttons are released, it will be continously displayed to erase the error display, press the
"OI" Button in the remote control or AUX button.
Example : Wiring connector between the units is improper.
Note : If the power plug is disconnected, the memory of the error information will be erased.
Note : If the power plug is disconnected, the memory of the error information will be erased.
Fig. T-2
1 second
4 second
1 second
ON
Timer LED
OFF
ON
1
2
3
4
5
Timer LED
OFF
ON
Operation LED
OFF
If the timer LED fickers 5 times, it will be regarded as
one block information will be displayed depending on
the state of the operation LED.
one block information will be displayed depending on
the state of the operation LED.
19
AY-M09AE
AE-M18AE
AE-M18AE
2. For the other errors which are not displayed by the self-diagnosis, refer to the troubleshooting flow
chart in Page 21.
Method to repair the control circuit which does not work due to improper wiring between the units
Since a part in the control circuit may be broken, replace the following parts.
Using the tester, check the thermal fuse for continuity(after turning off the power supply and disconnecting
CN5 of the outdoor unit.)
Using the tester, check the thermal fuse for continuity(after turning off the power supply and disconnecting
CN5 of the outdoor unit.)
(1) Control circuit of indoor unit
1) Thermal fuse
TC
115˚C
2) Photo coupler
PC1 PC111L
(2) Control circuit of outdoor unit
1) Thermal fuse
TC
115˚C
2) Photo coupler
PC2 PC111L (Room A1)
PC4 PC111L (Room A2)
PC4 PC111L (Room A2)
(3) Procedure to install the thermal fuses in the control circuits of the indoor and outdoor units.
RESISTOR
FUSE
INDOOR SIDE
FUSE
RESISTOR
OUTDOOR SIDE
Fig. T-3
(Caution)
(1) Closely install the fuse on the resistor.
(1) Closely install the fuse on the resistor.
(The mass production type is bonded with silicon rubber.)
(2) Solder the fuse for the shortest possible time.
If it is done for a long time, the fuse may be off.
The fuse of the outdoor unit is commonly used in both the rooms A1 and A2.
20
AY-M09AE
AE-M18AE
AE-M18AE
Self-diagnosis table (error information call-up)
: Turns ON.
Display with operation LED of
indoor unit
It is ON at the same time
when timer LED is ON.
Outdoor unit display LED
LED 1
Room
A1
Serial
SIGNAL
LED 2
Room
A2
Serial
SIGNAL
LED 3
Error
display
Diagnosis content
Content
Relevant
unit
Indoor
Outdoor
Indoor
Outdoor
Outdoor
No current flows in
the compressor.
Indoor or
outdoor
Check item
Remedy
: Turns OFF.
: Flickering at 2 seconds intervals.
: Flickering at 0.2 seconds intervals.
Error
No.
1
2
3
4
5
6
x
1
2
3
4
4 sec.
OFF
5
x
x
x
Outdoor thermistor is
defective. Open circuit
Outdoor thermistor is
defective. Short circuit (0
Ω
)
Indoor thermistor is defective.
Short circuit (0
Ω
)
Indoor thermistor is defective.
Open circuit
Wiring connection
between the unit is improper.
Compressor is locked.
Indoor fan motor rotates
poorly.
No diagnosis information.
(1) Does indoor fan rotate ?
(2) Check the running capacitor.
(3)
Check the wiring and correction of the power supply to the compressor.
(2) Replace the running capacitor.
(3) Connect the wiring connection.
(4) Replace the compressor.
(2)
Unless LED flickers or lights, the outdoor control
circuit does not operate.
Refer to trouble shooting flow chart in Page 21 ~ 23.
(1)
Check the voltage of the power supply for 198 to 264V.
Check that the voltage drops when the compressor is started.
(1) Correct the wiring between the unit.
(2) Is LED 1 or LED 2 ON on the outdoor unit ?
(1) Check the connection of the
thermistor connector CN4.
(2) Check the resistance of the
thermistor.
(1) Check the connector of the
thermistor connector CN5.
(2) Check the resistance of the
thermistor.
(1) Is RY1(room A1) or RY2(room A2) on ?
(For check try to TEST RUN the indoor unit.)
(2)
Check the connection of compressor from RY1 and RY2.
(3) Check compressor motor protector for activation.
(2) Check the connected and soldered state of CN5.
(3) Is rotation pulse input to the terminals No. 2 and 3
of CN5. ?
(1) Fan or fan motor locked Replace
(1) Improve the power supply.
(1)
Since the parts of the control circuit may be
broken, replace the control circuit in the indoor
and outdoor units.
For the circuit repairing method, refer to Page 19.
(1) Improve connection state.
(2) Replace the thermistor.
(1) Improve connection state.
(2) Replace the thermistor.
(1) Replace the outdoor control board unit.
(2) Connect the wiring connection.
(3) Connect the cause of the overloaded
operation.
(2) Correct the connecting solder or replace the
control board unit.
CHARACTERISTIC OF TH1 & TH2
0 -10
0
10
20
30
40˚C
20
40
60
80
100
120
k
Ω
25˚C
15k
Ω
Click on the first or last page to see other AY-M09 service manuals if exist.