10
Technical Information
Service Manual
6. Function and Control
Ⅰ
Basic functions:
1. Cooling mode
1.1 Working condition and process for cooling
：
a.When Tinner amb. ≥Tpreset, the unit operates under cooling
mode. Meanwhile, the fan and the compressor operate, and the
fan operates at set fan speed;
b. When Tinner amb. ≤Tpreset-2
℃
, the compressor stops opera-
tion, and the fan operates at set fan speed;
c. When Tpreset-2
℃＜
Tinner amb.
＜
Tpreset, the unit keeps
previous operation status.
d. When turning off the unit, the compressor stops operation. The
fan will stop operation after operating at low fan speed for another
30s.
1.2 Under cooling mode, the temperature setting range is
16
℃～
30
℃
. When compressor stops operation due to malfunc-
tion, the fan and the swing fan operate at original status.
2. Drying mode
1.1 Working condition and process for drying:
a. When Tinner amb.
＞
Tpreset, the unit operates at drying mode.
Meanwhile, the fan and the compressor operate, and the fan is
defaulted to operate at low fan speed;
b. When Tpreset-2
℃
≤Tinner amb.≤Tpreset, the unit keeps the
original operation status;
c. When Tinner amb.
＜
Tpreset-2
℃
, compressor stops operation,
and the fan is defaulted to operate at low fan speed.
d. When turning off the unit, the compressor stops operation. The
fan will stop operation after operating at low fan speed for another
30s.
1.2 In this mode, the temperature setting range is 16
℃～
30
℃
.
3. Auto mode
Working condition and process for auto operation
a. When Tinner amb.≥26
℃
, the unit operates at cooling mode and
Tpreset=25
℃
;
b. When T inner amb.≤ 22
℃
, the unit operate at fan mode and
Tpreset=20
℃
;
c
．
When 22
℃＜
Tinner amb.
＜
26
℃
, the unit keeps the original
operation status;
4. Fan mode
Under the fan mode, compressor stops operation and the fan oper-
ates at set fan speed. Temperature cant be set by buttons on the
control panel, while it can be set by remote controller.
Ⅱ
Buttons function
1. ON/OFF:
It used to turn on or turn off the unit.
2. Mode:
It used to switch among cooling mode, drying mode and fan mode.
3. Fan speed:
It used to set high, medium, low or auto fan speed. The corre-
sponding LED indicator is on (under drying mode, this button cant
be adjusted. The fan speed is the low speed).
4.+/- button:
4.1 The temperature setting range is 0~24 hours. The timer can be
set in 0.5 hour increments between 1 and 10 hours; or in 1 hour
increments for 10 hours above.
4.2 Under temperature setting range, each push on +/- button will
increase or decrease 1
℃
.
5. Swing:
Press this button to turn on swing function; press this button again
to cancel swing function.
6. Timer function
6.1 Timer ON: Timer ON can be set under OFF status, and then
Timer ON setting range is 0.5
～
24 hours. When the set time is
reached, the system will operate at the preset mode.
6.2 Timer OFF: Timer OFF can be set under ON status, and then
Timer OFF setting range is 0.5
～
24 hours. When the set time is
reached, the system will stop operation.
7. The dual-8 nixie tube is defaulted to display
℃
. The displays
can switch among
℃
and
℉
. Press “+”and“-”buttons simultane
-
ously for 3s to switch them.
8. FILTER
When the fan has operated for 250hour in all, the filter indicator will
be on to remind user to clean the filter. When the filter indicator is
on, press filter button to clear the accumulated operation time and
the filter indicator will be off.
9. Sleeping mode
；
9.1 When the initial temperature is set at 16
～
23
℃
, after turn-
ing on the sleeping function, the temperature will increase by 1
℃
every two hours. When the temperature is increased by 3
℃
, the
temperature will not change any more. When the unit has operated
for 7 hours, the temperature will decreased by 1
℃
. After that, the
unit will operate at this time all the time.
9.2 When the initial temperature is set at 24
～
27
℃
, after turn-
ing on the sleeping function, the temperature will increase by 1
℃
every two hours. When the temperature is increased by 2
℃
, the
temperature will not change any more. When the unit has operated
for 7 hours, the temperature will decreased by 1
℃
. After that, the
unit will operate at this time all the time.
9.3 When the initial temperature is set at 28
～
29
℃
, after turn-
ing on the sleeping function, the temperature will increase by 1
℃
every two hours. When the temperature is increased by 1
℃
, the
temperature will not change any more. When the unit has operated
for 7 hours, the temperature will decreased by 1
℃
. After that, the
unit will operate at this time all the time.
9.4 When the initial temperature is set at 30
℃
, after turning on the
sleeping function, the unit will operate at this temperature. When
the unit has operated for 7 hours, the temperature will decreased
by 1
℃
. After that, the unit will operate at this time all the time.
10. Fan
The fan can operate at high, medium, low or auto fan speed. The
auto fan speed will automatically adjust the current operation sta-
tus of the fan.
a.Auto fan speed under cooling mode:
Tinner amb.≥2
℃
high fan speed
Tpreset
＜
T inner amb.
＜
2
℃
medium fan speed
T inner amb.≤Tpreset low fan speed
b.The fan speed under fan mode is same as that for cooling mode.
c.The auto fan under auto mode is controlled by the auto fan under
its actual mode;
d. Only low fan speed under drying mode. When adjusting the fan
speed button, only the low fan indicator is ON and the buzzer will
give out a sound.
11. Power-off memory
The system will memorize the setting operation status (mode, set
temperature, fan speed, timer) before power failure. Once power
recovered, the unit will automatically operate at the set status be-
fore power failure.
