Sharp AH-AP24 (serv.man12) Service Manual ▷ View online
21
AH/AY-AP18DR
AH/AY-AP24DR
AH/AY-AP24DR
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 enters area “ D “, the compressor
is turned off, and the indoor fan motor is turned off after
rotating at “HUL” for 30 seconds. 3 minutes after turning
on the compressor, the compressor is turned on for 3
minutes. At 10 seconds after turning on the compressor,
the indoor fan motor is turned on. The next compressor
OFF time is accordance with the room temperature
area when 3 minutes elapse after turning on the
compessor. If the area “D “, compressor OFF time is for
3 minutes and if “ E “, it’s for 8 minutes. If the area “ F
“,compressor is not turned on. Only the inddor fan motpr
is turned on 8 minutes later for 3 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 enters area “ D “, the compressor
is turned off, and the indoor fan motor is turned off after
rotating at “HUL” for 30 seconds. 3 minutes after turning
on the compressor, the compressor is turned on for 3
minutes. At 10 seconds after turning on the compressor,
the indoor fan motor is turned on. The next compressor
OFF time is accordance with the room temperature
area when 3 minutes elapse after turning on the
compessor. If the area “D “, compressor OFF time is for
3 minutes and if “ E “, it’s for 8 minutes. If the area “ F
“,compressor is not turned on. Only the inddor fan motpr
is turned on 8 minutes later for 3 minutes.
MODELS
Fan
LIne
U1
U2
U1
U2
HH HAH HM
1 2 1 2 1 2
54˚C 54˚C 54˚C 54˚C 53˚C 53˚C
52˚C 53˚C 52˚C 53˚C 51˚C 52˚C
54˚C 54˚C 54˚C 54˚C 53˚C 53˚C
52˚C 53˚C 52˚C 53˚C 51˚C 52˚C
MODELS
Fan
LIne
U1
U2
U1
U2
HAL HL HUL
1 2 1 2 1 2
52˚C 52˚C 52˚C 52˚C 52˚C 52˚C
50˚C 51˚C 50˚C 51˚C 50˚C 51˚C
52˚C 52˚C 52˚C 52˚C 52˚C 52˚C
50˚C 51˚C 50˚C 51˚C 50˚C 51˚C
AY-AP24DR
AY-AP18DR
AY-AP24DR
AY-AP18DR
Pipe temperature(˚C)
24
29
30
35
OFF
UL
UL
UL
OFF
Preset
Fan speed
OFF
ON
U1
U2
U1 and U2 are defferent by the time.
1 within 3 minutes
3 over 3 minutes
1 within 3 minutes
3 over 3 minutes
Compressor
ON
ON
OFF
OFF
Indoor
fan motor
fan motor
HUL
HUL
3 min.
10 sec.
10 sec.
30 sec.
30 sec.
3 min.
area " D " : 3 min.
area " E " : 8 min.
area " F " : 8 min.
area " E " : 8 min.
area " F " : 8 min.
When area is
" D " or " E "
" D " or " E "
When area is
" F " or " E "
" F " or " E "
Area " D " : To becoming below line H2 after becoming above line H1
Area " E " : To becoming below line H1 after becoming above line H02
Area " F " : To becoming below line H02 after becoming above line H01
Area " E " : To becoming below line H1 after becoming above line H02
Area " F " : To becoming below line H02 after becoming above line H01
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 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”.
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”.
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.
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.
Figure Y-9
Table Y-3
AH/AY-AP18DR
AH/AY-AP24DR
AH/AY-AP24DR
22
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.
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.
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.
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
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.
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.
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.
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.
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
Fan motor
OFF
Indoor
Fan motor
Shift UP
Fan motor
Shift UP
Compressor
OFF
OFF
Time
Input current
Current transition
P1 19.0A 22.8A
P2 13.5A 18.1A
P3 12.8A 16.9A
P4 12.4A 16.8A
P5 12.0A 16.0A
AY-AP18DR AY-AP24DR
Switch ON
Heating
Heating
Heating
Min.
40min.
40min.
Max.
12min.
12min.
Min.
30min.
30min.
Max.
12min.
12min.
Defrost
Defrost
Defrost start
Compressor
Reverse
Valve
Valve
Outdoor
Fan Motor
Fan Motor
Indoor
Fan Motor
Fan Motor
Preheat Air
Flow Control
Flow Control
30sec.
MAX. 7min.
60sec.
60sec.
ON
OFF
ON
OFF
ON
OFF
ON
OFF
60sec.
HUL
23
AH/AY-AP18DR
AH/AY-AP24DR
AH/AY-AP24DR
13.
Automatic air conditioning
automatic air conditioning is selected, the
operation mode and preset temperature are set
automatically according to the room temperature
on starting operation.
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 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 speed setting
is changed accordingly. Despite, the actual fan
speed will not change, as it is determined
automatically by the micro computer.
computer 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 speed 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.
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
15.
Outputs in each operation mode
Table Y-5
16.
Power on start
If the connecting wire JP5 is shorten 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-5. ~ L-8. Printed Wiring Board.)
If the connecting wire JP5 is shorten 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-5. ~ L-8. Printed Wiring Board.)
17.
AUTO RESTART
Power failure occurs during operation, the unit will
restart in the same operation mode as before after
power recovery.
Power failure occurs during operation, the unit will
restart in the same operation mode as before after
power recovery.
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.
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.
19.
Plasma cluster
Plasma cluster ion mode
SSR2 : ON
Relay (Cluster unit inside) : OFF
Plasma cluster ion mode
SSR2 : ON
Relay (Cluster unit inside) : OFF
Minus ion mode
SSR2 : ON
Relay (Cluster unit inside) : ON
SSR2 : ON
Relay (Cluster unit inside) : ON
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
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
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 "
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
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
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
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
ON
ON
L/UL
UL/D
OFF
D/OFF
OFF
OFF
OFF
Mode
Compressor
Outdoor
Fan Motor
Cooling
Circulating
Normal
Preheat
Air Flow
Control
Air Flow
Control
ON Defrost
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
(Yellow)
(Yellow)
ON
OFF
Judgement
Normal
(Generator OK)
(Generator OK)
Failure
(Check circuit)
(Check circuit)
1) Cluster generator checking (STEP 1)
AH/AY-AP18DR
AH/AY-AP24DR
AH/AY-AP24DR
24
Table Y-6
AY-AP24DR
7
~
42˚C
ON
-2
~
45˚C
ON
~
7˚C , 42˚C
~
OFF
~
-2˚C , 45˚C
~
OFF
0.3V
~
4.5V
ON
~
0.3V , 4.5V
~
ON
0.3V
~
4.5V
ON
~
0.3V , 4.5V
~
ON
~
0.3V , 4.5V
~
OFF
0.3V
~
4.5V
OFF
~
0.3V , 4.5V
~
OFF
0.3V
~
4.5V
OFF
~
0.1V , 4.9V
~
OFF
ON
AN3( 1)
0.1V
~
4.9V
~
0.1V , 4.9V
~
OFF
ON
0.1V
~
4.9V
ON
OFF
ON
ON
ON
ON
ON
ON
ON
ON
ON
OFF
ON
OFF
ON
OFF
ON
OFF
OFF
OFF
OFF
ON
OFF
ON
ON
OFF
ON
OFF
OFF
ON
ON
OFF
AH-AP24DR
7
~
42˚C
ON
-2
~
45˚C
ON
~
7˚C , 42˚C
~
OFF
~
-2˚C , 45˚C
~
OFF
0.3V
~
4.5V
ON
~
0.3V , 4.5V
~
ON
0.3V
~
4.5V
ON
~
0.3V , 4.5V
~
ON
~
0.3V , 4.5V
~
OFF
0.3V
~
4.5V
OFF
~
0.3V , 4.5V
~
OFF
0.3V
~
4.5V
OFF
ON
OFF
ON
OFF
ON
ON
OFF
ON
ON
ON
OFF
ON
ON
ON
OFF
OFF
ON
ON
OFF
ON
ON
ON
OFF
OFF
OFF
ON
OFF
ON
OFF
ON
ON
OFF
OFF
OFF
OFF
2
ON
0
1
FEED BACK CIRCUIT
OFF
ON
OFF
ON
ON
OFF
EEPROM VERSION(LOWER 4bit)
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
ON
Indoor
Fan
CLOSE
OFF
OFF
1000
rpm
Louver
OFF
OPEN
OPEN
OFF
OFF
OFF
Outdoor
fan
4-way
valve
OFF
OFF
Compressor
OFF
ON
Micro SW
EEPROM
81
OFF
OFF
1
OFF
OFF
ON
1
1
1
3
Lamps
OFF
ON
ON
FAN SOFT
FAN LOW
RED
YELLOW
Room temp.
Pipe temp.
STEP
No
Buzzer
7
4
6
5
2
1
1
1
Pipe 1
Pipe 2
Power On Start(JP5)
Wireless(JP4)
Sweat(JP3)
Hot Keep(JP2)
FLICK
DEICE 1
DEICE 2
OFF
OFF
BLUE
GREEN
OFF
OFF
OFF
OFF
OFF
Cluster(JP19)
Dry Fan(JP11)
Heating mode FAN speed Collection(AN6 input voltage)
OFF
OFF
OFF
EEPROM VERSION(UPPER 4bit)
ON
ON
CT INPUT(AN2 input voltage)
MODEL SELECTION(AN4 input voltage)
OFF
FAN HIGH
FAN AUTO
ON
BLUE
CLUSTER
OFF
OFF
Louver Collection(AN5 input voltage)
Cooling mode FAN speed Collection(AN6 input voltage)
Cluster
Power
Selector
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
FAN HIGH
FAN AUTO
Cluster
STEP
No
Buzzer
Lamps
RED
YELLOW
FAN SOFT
FAN LOW
CLUSTER
Power
Selector
OFF
Outdoor
Indoor
Fan
Louver
BLUE
OFF
OFF
OPEN
OFF
02
Room temp.
Pipe temp.
ON
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
EEPROM VERSION(UPPER 4bit)
OFF
81
OFF
OFF
OFF
OFF
OFF
EEPROM VERSION(LOWER 4bit)
OFF
OFF
OFF
OFF
OFF
OFF
11
FEED BACK CIRCUIT
CT INPUT(AN2 input voltage)
BLUE
ON
OFF
ON
1000
rpm
OFF
OFF
OPEN
FLICK
21
Power On Start(JP5)
Wireless(JP4)
MODEL SELECTION(AN4 input voltage)
GREEN
ON
ON
OFF
31
Hot Keep(JP2)
Out Fan(JP18)
TEST(JP8)
Cluster(JP19)
Dry Fan(JP11)
OFF
OFF
41
DEICE 2
Louver Collection(AN5 input voltage)
OFF
OFF
OFF
OFF
OFF
51
Pipe 2
Cooling mode FAN speed Collection(AN6 input voltage)
OFF
OFF
OFF
61
EEPROM
Micro SW
Heating mode FAN speed Collection(AN6 input voltage)
OFF
OFF
OFF
ON
71
OFF
CLOSE
OFF
OFF
OFF
OFF
OFF
OFF
OFF
AN3( 1)
Click on the first or last page to see other AH-AP24 (serv.man12) service manuals if exist.