21
Technical Information
Service Manual
6.2 Brief Description of Models and Functions
6. Function and Control
●
Indoor Unit
1.Basic function of system
(1)Cooling mode
(1) Under this mode, fan and swing operates at setting status.
Temperature setting range is 16~30
O
C.
(2) During malfunction of outdoor unit or the unit is stopped
because of protection, indoor unit keeps original operation status.
(2)Drying mode
(1) Under this mode, fan operates at low speed and swing
operates at setting status. Temperature setting range is 16~30
O
C.
(2) During malfunction of outdoor unit or the unit is stopped
because of protection, indoor unit keeps original operation status.
(3) Protection status is same as that under cooling mode.
(4) Sleep function is not available for drying mode.
(3)Heating mode
(1) Under this mode, Temperature setting range is 16~30
O
C.
(2) Working condition and process for heating mode:
When turn on the unit under heating mode, indoor unit enters into
cold air prevention status. When the unit is stopped or at OFF
status, and indoor unit has been started up just now, the unit
enters into residual heat-blowing status.
(4)Working method for AUTO mode:
1.Working condition and process for AUTO mode:
a.Under AUTO mode, standard heating Tpreset=20
O
C and
standard cooling Tpreset=25
O
C. The unit will switch mode
automatically according to ambient temperature.
2.Protection function
a. During cooling operation, protection function is same as that
under cooling mode.
b. During heating operation, protection function is same as that
under heating mode.
3. Display: Set temperature is the set value under each condition.
Ambient temperature is (Tamb.-Tcompensation) for heat pump
unit and Tamb. for cooling only unit.
4. If theres I feel function, Tcompensation is 0. Others are same
as above.
(5)Fan mode
Under this mode, indoor fan operates at set fan speed.
Compressor, outdoor fan, 4-way valve and electric heating tube
stop operation. Indoor fan can select to operate at high, medium,
low or auto fan speed. Temperature setting range is 16~30
O
C.
2. Other control
(1) Buzzer
Upon energization or availably operating the unit or remote
controller, the buzzer will give out a beep.
(2) Auto button
If press this auto button when turning off the unit, the complete
unit will operate at auto mode. Indoor fan operates at auto fan
speed and swing function is turned on. Press this auto button at
ON status to turn off the unit.
(3) Auto fan
Heating mode: During auto heating mode or normal heating ode,
auto fan speed will adjust the fan speed automatically according
to ambient temperature and set temperature.
(4) Sleep
After setting sleep function for a period of time, system will adjust
set temperature automatically.
(5) Timer function:
General timer and clock timer functions are compatible by
equipping remote controller with different functions.
(6) Memory function
memorize compensation temperature, off-peak energization value.
Memory content: mode, up&down swing, light, set temperature,
set fan speed, general timer (clock timer cant be memorized).
After power recovery, the unit will be turned on automatically
according to memory content.
(7) Health function
During operation of indoor fan, set health function by remote
controller. Turn off the unit will also turn off health function.
Turn on the unit by pressing auto button, and the health is
defaulted ON.
Once compressor is started, it wont stop within 6 mins according
to the change of room temp.
(1) Auto mode
①
Operation condition and process for auto mode
Under auto mode, the system will automatically select operation
mode (cooling, heating, and fan) according to indoor ambient
temperature. There swill be 30s delayed for protection between
mode switchover.
◆
When Tamb. ≥26
℃
, unit will be in cooling mode
℃
Ex-factory
set temperature is 25
℃
◆
Cooling and heating unit: When Tamb≤(19
℃
+Tcompensation),
unit will be in heating mode Tpreset=20
℃
.
◆
Cooling only unit: When Tamb≤22
℃
(or 72
℉
), unit will be in
fan mode Tpreset=25
℃
.
◆
For cooling and heating unit under condition that
(19
℃
+Tcompensation)
＜
Tamb
＜
26
℃
(For cooling only unit
under condition that 22
℃ ＜
Tamb
＜
26
℃
), when unit is initially
turned on in auto mode, it will operate according to auto fan
mode. When unit is changed to auto mode from other modes, it
will maintain its previous working status (If auto mode is turned on
from drying mode, unit will operate according to auto fan mode).
②
Protection function is same as that under each mode.
(2) Cooling mode
①
Operation condition and process for cooling mode
