Technical Information
Service Manual
●
Indoor Unit
1.Basic function of system
(1)Cooling mode
(1)
Under
this
mode,
fan
and
swing
operates
at
setting
status.
O
Temperature setting range is 16~30
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
O
operates at setting status. Temperature setting range is 16~30
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
O
(1) Under this mode, Temperature setting range is 16~30
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:
O
a.Under AUTO
mode,
standard
heating
Tpreset=20
C
and
O
standard
cooling
Tpreset=25
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
operate s
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,
O
low or auto fan speed. Temperature setting range is 16~30
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
18
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.
(8)I feel control mode
After controller received I feel control signal and ambient
temperature sent by remote controller, controller will work
according to the ambient temperature sent by remote controller.
(9)Entry condition for compulsory defrosting function
When turn on the unit under heating ode and set temperature is
16
O
C (or 16.5
O
C by remote controller), press “▲, ▼, ▲, ▼, ▲, ▼”
button successively within 5s and then indoor unit will enter into
compulsory defrosting setting status:
(1) If theres only indoor units controller, it enters into indoor normal
defrosting mode.
(2) If theres indoor units controller and outdoor units controller,
indoor unit will send compulsory defrosting mode signal to outdoor
unit and then outdoor unit will operate under normal defrosting
mode. After indoor unit received the signal that outdoor unit has
entered into defrosting status, indoor unit will cancel to send
compulsory mode to outdoor unit. If outdoor unit hasnt received
feedback signal from outdoor unit after 3min, indoor unit will also
cancel to send compulsory defrosting signal.
(10)Refrigerant recovery function:
Enter into Freon recovery mode actively: Within 5min after
energization, turn on the unit at 16
O
C under cooling mode, and
press light button for 3 times within 3s to enter into Freon recovery
mode. Fo is displayed and Freon recovery mode will be sent to
outdoor unit.
(11)Ambient temperature display control mode
1. When user set the remote controller to display set temperature
(corresponding remote control code: 01), current set temperature
6.2 Brief Description of Models and Functions
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