Read Sharp AU-A18 (serv.man7) Service Manual online
13
AH-AP18CS
AH-AP24CS
AU-A18CS
AU-A24CS
AH-AP24CS
AU-A18CS
AU-A24CS
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
Table H-1
3. Fan speed
Fan speeds are given by the indoor fan motor,
"DL"~"CH" which are available in the following
operation mode.
"DL"~"CH" which are available in the following
operation mode.
Table H-2
NOTE:Fan speed may be changed, without warning.
Compressor
Cooling zone 1 & 5
Dehumidifying zone 2 & 4
Circulating zone 3
Fan speed
ON
"DH"
"DL"
"DL" or OFF
ON
OFF
4. Freeze preventive
When the indoor pipe temperature falls below 0˚C
cool or dry operation for 3 minutes or more, the
compressor is turned off. When the indoor pipe
temperature rises above 4˚C in cool or dry operation for
3 minutes or more, the compressor is turned on.
cool or dry operation for 3 minutes or more, the
compressor is turned off. When the indoor pipe
temperature rises above 4˚C in cool or dry operation for
3 minutes or more, the compressor is turned on.
5. 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.
In cool mode continuous compressor on operation is
performed. In dry mode the operation is in dehumidifying
zone.
or more during operation, cool test operation starts.
The operation LED (red) flickers during test run.
In cool mode continuous compressor on operation is
performed. In dry mode the operation is in dehumidifying
zone.
6. Timer
6-1
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). When the ON-timer is set
in cool operation, operation starts before 0 to
30 minutes(depends on the room temperature)
so that preset temperature is obtaind at set
time.
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). When the ON-timer is set
in cool operation, operation starts before 0 to
30 minutes(depends on the room temperature)
so that preset temperature is obtaind at set
time.
6-2
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.
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.
7. 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 H-3
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.
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.
8. Automatic fan speed
When the automatic fan speed is selected in cool
operation, the fan speed is automatically changed by
the thermostat lines C1 to C3 in cool operation.
operation, the fan speed is automatically changed by
the thermostat lines C1 to C3 in cool operation.
Room temperature
at operation start
at operation start
Operation
Mode
Mode
Preset
Temperature
Temperature
Above 28˚C
26˚C
26˚C ~ 28˚C
24˚C ~ 26˚C
Below 24˚C
25˚C
24˚C
Room temperature
at operation start
at operation start
COOL
DRY
Figure H-5
Fan
switch
DL
Fan
speed
speed
Fan switch
(AUTO)
AH-
AP18CS
(r.p.m.)
750
830
780
860
820
960
840
980
940
1030
1000
1120
1050
1210
AH-
AP24CS
(r.p.m.)
DH
DRY
COOL
CL
COOL
LOW
CAL
CM
COOL
MID
CAH
CH
COOL
HIGH
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