Sharp AE-A184 Service Manual / Specification ▷ View online
13
AY-A184E
AY-A244E
AE-A184E
AE-A244E
AY-A244E
AE-A184E
AE-A244E
4. Hot-Keep
This function automatically controls the on-off operation
of the indoor fan motor in accordance with the on-off
operation of the compressor 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 “D” for 30 seconds.
3 minutes after turning off the compressor, the compressor
is turned on for 3 minutes. (below thermostat line H01).
While over H01, the compressor is off.
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 15 minutes
according to the room temperature (the time increases
with a rise of room temperature) when 3 minutes elapse
after turning on the compessor (the compressor is off
when compressor OFF time is 15 minutes).
of the indoor fan motor in accordance with the on-off
operation of the compressor 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 “D” for 30 seconds.
3 minutes after turning off the compressor, the compressor
is turned on for 3 minutes. (below thermostat line H01).
While over H01, the compressor is off.
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 15 minutes
according to the room temperature (the time increases
with a rise of room temperature) when 3 minutes elapse
after turning on the compessor (the compressor is off
when compressor OFF time is 15 minutes).
Figure Y-7
5. Preheat air flow
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
beginning 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 “D” 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 “D”. And, when the indoor pipe temperature falls below
24˚C, the fan motor turns off. Then, over 29˚C , it turns on
again at speed “D”.
discharged when the heating operation starts or when
defrosting.
When the indoor pipe temperature is below 29˚C at the
beginning 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 “D” 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 “D”. And, when the indoor pipe temperature falls below
24˚C, the fan motor turns off. Then, over 29˚C , it turns on
again at speed “D”.
Figure Y-8
6. Overheating protection system
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
U1˚C.
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
U1˚C.
Pipe temperature (
˚C)
24
29
30
35
OFF
D
D
D
OFF
Preset
Fan speed
Compressor
ON
OFF
Indoor
fan motor
fan motor
30sec.
time
D
ON
OFF
3 min.
(Notes)
(Notes)
3 min.
10sec.
D
30sec.
10sec.
3 / 8 / 15min.
(Notes)
(Notes)
Notes: Compressor is off when compressor OFF time is 15 minutes.
U1
OFF
ON
OFF
ON
U2
U1
U2
In the case of turn off
time is within 3 minutes
time is within 3 minutes
In the case of turn off
time is over 3 minutes
time is over 3 minutes
Figure Y-9
Table Y-3
MODELS
AY-A244E
AY-A184E
M
L
UL
U1
U2
U1
U2
54˚C
Fan
Speed
Line
52˚C
54˚C
52˚C
53˚C
51˚C
53˚C
51˚C
52˚C
50˚C
52˚C
50˚C
14
AY-A184E
AY-A244E
AE-A184E
AE-A244E
AY-A244E
AE-A184E
AE-A244E
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.
IWhen 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 "D" to UL". And when the current falls bellow P5,
the indoor fan speed shift up is canceled.
heating operation, controls the outdoor fan motor and
changes the indoor fan motor speed by detecting total
current.
IWhen 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 "D" to UL". 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 -1˚C
during cool operation or dry operation, the compressor is
turned off.
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.
The 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 “D” and the outdoor fan motor
is turned off.
30 seconds later the indoor fan motor is turned off, 50
seconds later the reverse valve is turned off, and 60
seconds later the compressor is turned on.
In the end of defrosting, the compressor is turned off, the
outdoor fan motor is turned on, 50 seconds later the
reverse valve is turned on, 60 seconds later 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 “D” if preheat air flow function is effective.
compressor) counts time with microcomputer during heat
operation.
The 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 “D” and the outdoor fan motor
is turned off.
30 seconds later the indoor fan motor is turned off, 50
seconds later the reverse valve is turned off, and 60
seconds later the compressor is turned on.
In the end of defrosting, the compressor is turned off, the
outdoor fan motor is turned on, 50 seconds later the
reverse valve is turned on, 60 seconds later 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 “D” if preheat air flow function is effective.
Switch
ON
ON
Defrost
Defrost
Heating
Heating
Heating
Min.
40min.
40min.
Max.
11min.
11min.
Min.
30min.
30min.
Max.
11min.
11min.
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.
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 “TEST RUN” button in the unit is pushed during
suspension of operation, cool test operation starts. At this
time, the fan speed is set to “AUTO”.
If this button is pushed during operation, the test operation
starts in current operation mode. The operation LED (red)
flickers during test run.
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 continuously.
suspension of operation, cool test operation starts. At this
time, the fan speed is set to “AUTO”.
If this button is pushed during operation, the test operation
starts in current operation mode. The operation LED (red)
flickers during test run.
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 continuously.
12.Timer
Defrost start
Compressor
Reverse
Valve
Valve
Outdoor
Fan Motor
Fan Motor
Indoor
Fan Motor
Fan Motor
Preheat Air
Flow Control
Flow Control
30sec.
MAX. 9min.
50sec.
ON
OFF
ON
OFF
ON
OFF
10sec.
60sec.
ON
OFF
50sec. 10sec.
12-1 24-HOUR PROGRAMMABLE ON/OFF TIMER
ON-TIMER or OFF-TIMER can be independently
programmed. When the unit operates during one
hour after the OFF-timer is set, thermostat setting
is automatically shifted (+1˚C in cool operation and
dry operation, -3˚C in heat operation, but, 16˚C set
temperature at the lowest).
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.
programmed. When the unit operates during one
hour after the OFF-timer is set, thermostat setting
is automatically shifted (+1˚C in cool operation and
dry operation, -3˚C in heat operation, but, 16˚C set
temperature at the lowest).
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.
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 18.0A 23.3A
P2 13.5A 19.0A
P3 13.0A 18.5A
P4 12.5A 18.4A
P5 12.3A 17.5A
AY-
A184E
A184E
AY-
A244E
A244E
15
AY-A184E
AY-A244E
AE-A184E
AE-A244E
AY-A244E
AE-A184E
AE-A244E
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.
mode and preset temperature are set automatically
according to the room temperature on starting operation.
Table Y-4
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
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 operation and H1 to H4 in heat
operation.
operation, the fan speed is automatically changed by the
thermostat lines C1 to C3 operation and H1 to H4 in heat
operation.
Figure Y-13
Figure Y-14
15.Outputs in each operation mode
Table Y-5
ON
OFF
ON
OFF
ON
ON
ON
ON/OFF
OFF
OFF
ON
ON
OFF
OFF
ON
OFF
ON
ON
ON
OFF
ON/D/OFF
ON
ON
D/OFF
ON
OFF
OFF
OFF
ON
L/UL
ON/OFF
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
L
H
E
A
E
A
T
D
R
Y
R
Y
Cooling
Circulating
Dehumidiflying
16.Power on start
If the connecting wire "POWER ON" 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.)
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
If the connecting wire "MEMORY" is cut and IC6 is
soldered on the PWB ass'y, and power failure occurs
during operation, the unit will restart in the same operation
mode as before after power recovery.
(Refer to Figure L-2. Printed Wiring Board.)
soldered on the PWB ass'y, and power failure occurs
during operation, the unit will restart in the same operation
mode as before after power recovery.
(Refer to Figure L-2. Printed Wiring Board.)
18.Test mode
18-1 TEST 1 (For control circuit operation checking)
Make terminals 1 and 2 of connector CN4 short-
circuited and supply the power.
Hereby the timer's period become shortened. as
follows.
The operation LED flicker's period
circuited and supply the power.
Hereby the timer's period become shortened. as
follows.
The operation LED flicker's period
in Test run
The protector timer not shortened
The defrost timer
The protector timer not shortened
The defrost timer
Other controls; 1/60 (ex.; 3 min. to 3 sec.)
18-2 TEST 2 (For output of each operation checking)
Keep pushing both the buttons, "AUX." and "TEST
RUN", and supply the power, the system will go to
the test 2 mode. In this mode, the output of operation
is switched by pushing the "TEST RUN" button in
the unit or the "ON/OFF" button in the remote
controller.
Use the "AUX." button to back to step 1.
Normal outputs are shown in Table Y-6 and Y-7.
RUN", and supply the power, the system will go to
the test 2 mode. In this mode, the output of operation
is switched by pushing the "TEST RUN" button in
the unit or the "ON/OFF" button in the remote
controller.
Use the "AUX." button to back to step 1.
Normal outputs are shown in Table Y-6 and Y-7.
Room temperature
Preset temperature
Room
temperature
transition
temperature
transition
C3
C2
C1
States 1 & 5 : "M"
States 2 & 4 : "L"
State 3 : "UL"
States 2 & 4 : "L"
State 3 : "UL"
3
4
5
1
2
a. COOL operation
Room temperature
Preset temperature
Room
temperature
transition
temperature
transition
H3
H2
States 1 & 7 : "M"
1
4
States 2 & 6 : "L"
States 3 & 5 : "UL"
State 4 : "UL"/"D"/OFF
States 3 & 5 : "UL"
State 4 : "UL"/"D"/OFF
b. HEAT operation
H1
H4
2
3
5
6
7
16
AY-A184E
AY-A244E
AE-A184E
AE-A244E
AY-A244E
AE-A184E
AE-A244E
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) turns 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) turns off and the timer LED(yellow) turns on
or off as follows.
In this case, when "ON/OFF" button in the remote
controller or "AUX" button in the unit is pushed, the
unit is out of "Trouble suspension".
controller or "AUX" button in the unit is pushed, the
unit is out of "Trouble suspension".
Table Y-6 (AY-A184E)
ON
OFF
OFF
1sec.
1sec.
4sec.
Timer LED
(yellow)
(yellow)
Figure Y-15
Step
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
Output for outdoor unit
Lamps
RED
YELLOW
Indoor
Fan motor
Louver
OFF
Compressor
Reverse Valve
Ootdoor Fan Motor
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
(Back to step 1)
OFF
OPEN
ON
D
OFF
Flikering
OFF
M
OFF
ON
ON
L
CLOSE
ON
ON
D
OFF
ON
UL
OFF
ON
ON
H
OFF
ON
ON
M
OFF
ON
ON
L
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
OFF
ON
OFF
OFF
OFF
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
OFF
ON
OFF
OFF
OFF
OFF
ON
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
1
2
3
4
5
5
1
2
3
4
5
: 7˚C Room temp. 42˚C ON
7˚C (Room temp.) or (Room temp.) 42˚C OFF
7˚C (Room temp.) or (Room temp.) 42˚C OFF
: –2˚C Pipe temp. 42˚C ON
–2˚C Pipe temp. or (Pipe temp.) 42˚C OFF
–2˚C Pipe temp. or (Pipe temp.) 42˚C OFF
: 0.1V (ANI2 INPUT VOLTAGE) 0.45V ON
(0.1V ANI2 INPUT VOLTAGE) or (ANI2 INPUT VOLTAGE) 0.45V OFF
(0.1V ANI2 INPUT VOLTAGE) or (ANI2 INPUT VOLTAGE) 0.45V OFF
: When Power on start is effective, Timer LED(yellow) is OFF.
: When AUTO RESTART is effective, Operation LED(red) is OFF, and Timer LED(yellow) is ON.
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