OASIS SUPER INVERTER MULTI SERIES

OASIS SUPER INVERTER MULTI SERIES
OASIS SUPER INVERTER MULTI SERIES
Service Manual 2013
11MMFI-B-1211
CONTENTS
1.
Precaution ................................................................................................................................................. 3
1.1 Safety Precaution .......................................................................................................................... 3
1.2 Warning ......................................................................................................................................... 3
2.
Function .................................................................................................................................................... 7
3.
Dimension ................................................................................................................................................. 8
4.
Wiring Diagram ....................................................................................................................................... 10
5.
Operation Characteristics ...................................................................................................................... 11
6.
Electronic function ................................................................................................................................. 12
6.1 Abbreviation ................................................................................................................................ 12
6.2 Display function ........................................................................................................................... 12
6.3 Main Protection ....................................................................... Błąd! Nie zdefiniowano zakładki.
6.4 Operation Modes and Functions............................................. Błąd! Nie zdefiniowano zakładki.
1. Precaution
1.1 Safety Precaution

To prevent injury to the user or other people and property damage, the following
instructions must be followed.

Incorrect operation due to ignoring instruction will cause harm or damage.

Before service the unit, be sure to read this service manual at first.
1.2 Warning
 Installation

Do not use a defective or underrated circuit breaker. Use this appliance on a dedicated
circuit.
There is risk of fire or electric shock.

For electrical work, contact the dealer, seller, a qualified electrician, or an authorized
service center.
Do not disassemble or repair the product, there is risk of fire or electric shock.

Always ground the product.
There is risk of fire or electric shock.

Install the panel and the cover of control box securely.
There is risk of fire of electric shock.

Always install a dedicated circuit and breaker.
Improper wiring or installation may cause fore or electric shock.

Use the correctly rated breaker of fuse.
There is risk of fire or electric shock.

Do not modify or extend the power cable.
There is risk of fire or electric shock.

Do not install, remove, or reinstall the unit by yourself (customer).
There is risk of fire, electric shock, explosion, or injury.

Be caution when unpacking and installing the product.
Sharp edges could cause injury, be especially careful of the case edges and the fins on the
3
condenser and evaporator.

For installation, always contact the dealer or an authorized service center.

Do not install the product on a defective installation stand.

Be sure the installation area does not deteriorate with age.
If the base collapses, the air conditioner could fall with it, causing property damage, product failure,
and personal injury.

Do not let the air conditioner run for a long time when the humidity is very high and a
door or a window is left open.

Take care to ensure that power cable could not be pulled out or damaged during
operation.
There is risk of fire or electric shock.

Do not place anything on the power cable.
There is risk of fire or electric shock.

Do not plug or unplug the power supply plug during operation.
There is risk of fire or electric shock.

Do not touch (operation) the product with wet hands.

Do not place a heater or other appliance near the power cable.
There is risk of fire and electric shock.

Do not allow water to run into electrical parts.
It may cause fire, failure of the product, or electric shock.

Do not store or use flammable gas or combustible near the product.
There is risk of fire or failure of product.

Do not use the product in a tightly closed space for a long time.
Oxygen deficiency could occur.

When flammable gas leaks, turn off the gas and open a window for ventilation before
turn the product on.

If strange sounds or smoke comes from product, turn the breaker off or disconnect the
power supply cable.
There is risk of electric shock or fire.

Stop operation and close the window in storm or hurricane. If possible, remove the
product from the window before the hurricane arrives.
4
There is risk of property damage, failure of product, or electric shock.

Do not open the inlet grill of the product during operation. (Do not touch the electrostatic
filter, if the unit is so equipped.)
There is risk of physical injury, electric shock, or product failure.

When the product is soaked, contact an authorized service center.
There is risk of fire or electric shock.

Be caution that water could not enter the product.
There is risk of fire, electric shock, or product damage.

Ventilate the product from time to time when operating it together with a stove etc.
There is risk of fire or electric shock.

Turn the main power off when cleaning or maintaining the product.
There is risk of electric shock.

When the product is not be used for a long time, disconnect the power supply plug or
turn off the breaker.
There is risk of product damage or failure, or unintended operation.

Take care to ensure that nobody could step on or fall onto the outdoor unit.
This could result in personal injury and product damage.
 CAUTION

Always check for gas (refrigerant) leakage after installation or repair of product.
Low refrigerant levels may cause failure of product.

Install the drain hose to ensure that water is drained away properly.
A bad connection may cause water leakage.

Keep level even when installing the product.
It can avoid vibration of water leakage.

Do not install the product where the noise or hot air from the outdoor unit could damage
the neighborhoods.
It may cause a problem for your neighbors.

Use two or more people to lift and transport the product.

Do not install the product where it will be exposed to sea wind (salt spray) directly.
It may cause corrosion on the product. Corrosion, particularly on the condenser and evaporator fins,
5
could cause product malfunction or inefficient operation.
 Operational

Do not expose the skin directly to cool air for long time. (Do not sit in the draft).

Do not use the product for special purposes, such as preserving foods, works of art etc.
It is a consumer air conditioner, not a precision refrigerant system.
There is risk of damage or loss of property.

Do not block the inlet or outlet of air flow.

Use a soft cloth to clean. Do not use harsh detergents, solvents, etc.
There is risk of fire, electric shock, or damage to the plastic parts of the product.

Do not touch the metal parts of the product when removing the air filter. They are very
sharp.

Do not step on or put anything on the product. (outdoor units)

Always insert the filter securely. Clean the filter every two weeks or more often if
necessary.
A dirty filter reduces the efficiency of the air conditioner and could cause product malfunction or
damage.

Do not insert hands or other objects through air inlet or outlet while the product is
operated.

Do not drink the water drained from the product.

Use a firm stool or ladder when cleaning or maintaining the product.
Be careful and avoid personal injury.

Replace the all batteries in the remote control with new ones of the same type. Do not
mix old and new batteries or different types of batteries.
There is risk of fire or explosion.

Do not recharge or disassemble the batteries. Do not dispose of batteries in a fire.
They may burn of explode.

If the liquid from the batteries gets onto your skin or clothes, wash it well with clean
water. Do not use the remote of the batteries have leaked.
6
2. Function
Model Names of Indoor Units
Capacity
DC
Inverter
Indoor units
7K
KS11MI-07HRFN1-QW
9K
KS11MU-09HRFN1-QRC8W(B)
12K
KS11MU-12HRFN1-QRC8W(B)
18K
KS11MU-18HRFN1-QRC8GW
Filter
Ionizer(O)
Killer Of Formaldehyde
Plasma(O)
Silver Ico Filter(O)
Horizontal &Vertical Swing Function(O)
Vitamin C Filter(O)
Louver Position Memory Function
3M HAM Filter(O)
Self-diag. Function
Bio Filter(O)
Hydrophilic Aluminum Fin
Golden Fin(O)
Anti-rust Cabinet
Follow Me
Valve Protection Cover
O: optional function
7
3. Dimension
Model
W
D
H
KS11MI-07HRFN1-QW
750
198
280
KS11MU-09HRFN1-QRC8W(B)
750
198
280
KS11MU-12HRFN1-QRC8W(B)
835
198
280
KS11MU-18HRFN1-QRC8GW
990
218
315
Model
L(mm)
R(mm)
H(mm)
KS11MU-09HRFN1-QW
180
110
45
KS11MU-09HRFN1-QW
180
110
45
KS11MU-12HRFN1-QW
140
110
45
8
Dimension of installation hole(mm)
¢65
Model
L(mm)
R(mm)
H(mm)
Dimension of installation hole(mm)
KS11MU-18HRFN1-QW
260
135
45
¢65
9
4. Wiring Diagram
10
5. Operation Characteristics
Temperature
Mode
Room temperature
Cooling operation
Heating operation
Drying operation
≥17℃
≤30℃
≥17℃
-15℃~24℃
0℃~50℃
0℃~50℃
Outdoor temperature
-15℃~50℃
(For the models with
low temperature
cooling system)
CAUTION:
1. If the air conditioner is used beyond the above conditions, certain safety protection features
may come into operation and cause the unit to operate abnormally.
2. The room relative humidity should be less than 80%. If the air conditioner operates beyond this
figure, the surface of the air conditioner may attract condensation. Please set the vertical air flow
louver to its maximum angle (vertically to the floor), and set HIGH fan mode.
3. The optimum performance will be achieved during this operating temperature zone.
11
6. Electronic function
6.1 Abbreviation
T1: Indoor room temperature
T2: Coil temperature of evaporator
T3: Coil temperature of condenser
T4: Outdoor ambient temperature
T5: Compressor discharge temperature
6.2 Display function
6.2.1 Icon explanation on indoor display board.
ION indication lamp(optional function):This lamp
illuminates when Clean Air
feature is activated.
DEFROST indication lamp(For cooling & heating models only): Lights up
when the air conditioner
starts
defrosting automatically or
when the warm air
control feature is activated in heating operation.
OPERATION indication lamp:This lamp illuminates when the air conditioner is in
operation.
TIMER indication lamp:Lights up during Timer operation.
Temperature indicator:Displays the temperature settings when the air conditioner
is operational. Displays the malfunction code.
12
6.3 Main Protection
6.3.1 Time delay at restart for compressor
1 minute delay for the 1st time start-up and 3 minutes delay for others.
6.3.2 Temperature protection of compressor top
The unit will stop working when the compressor top temp. protector cut off, and will restart after
the compressor top temp. protector restart.
6.3.3 Temperature protection of compressor discharge
When the compressor discharge temp. is getting higher, the running frequency will be limited as
below rules:
---Compressor discharge temp. T5>115℃ for 5s, compressor stops and restarts up till T5<90℃
---110<T5<115℃, decrease the frequency to the lower level every 2 minutes.
---105<T5<110℃, keep running at the current frequency.
----T5<105℃, no limit for frequency.
6.3.4 Fan Speed is out of control
When Indoor Fan Speed keeps too low (300RPM) for certain time, the unit will stop and the LED
will display the failure
6.3.5 Inverter module protection
The Inverter module has a protection function about current, voltage and temperature. If these
protections happen, the corresponding code will display on indoor unit and the unit will stop
working.
6.3.6 Indoor fan delayed open function
When the unit starts up, the louver will be active immediately and the indoor fan will open 10s
later.
If the unit runs in heating mode, the indoor fan will be also controlled by anti-cold wind function.
6.3.7 Compressor preheating functions
Preheating permitting condition:
If T4(outdoor ambient temperature)<3℃ and the machine connects to power supply newly or if
T4<3℃ and compressor has stopped for over 3 hours, the compressor heating cable will work.
Preheating mode:
A weak current flow through the coil of compressor from the wiring terminal of the compressor,
13
then the compressor is heated without operation.
Preheating release condition:
If T4>5℃ or the compressor starts running, the preheating function will stop.
6.3.8 Sensor protection at open circuit and breaking disconnection.
When there’s one temperature sensor in malfunction, the air conditioner will display error code
and will not stop immediately, to avoid the case that the air conditioner is in urgent need.
Fault temp.
sensor
Operation in cooling, drying and
fan only mode
Operation in heating mode
T1
Run supposed T1=26℃ high fan
speed
Run supposed T1=26℃ high fan
speed
T2
Refer to table 1
Refer to table 2
T3
Run with compressor frequency
not higher than F14
3 minutes’ defrosting every 40
minutes when T4<7℃; 2 minutes’
defrosting every 90 minutes when
T4≥7℃.
T4
Run supposed T4=50℃
Run supposed T4=15℃
TP
Run supposed T4=50℃
Run supposed T4=15℃
T1
T1
F12
25
F4
20
18
23
F12(Indoor fan 1 minute
off, 1 minute M- ane then
the setting fan speed.)
F4(30 minutes on+3
minutes off)
table 1
table 2
6.4.10 Refrigerant leakage detection
This function is only active in cooling mode. It can better prevent the compressor being damaged
by refrigerant leakage or compressor overload.
Open condition:
Define the evaporator coil temp.T2 of the compressor just starts running as Tcool.
In the beginning 5 minutes after the compressor starts up, if T2 <Tcool-2℃ does not keep
continuous 4 seconds and this situation happens 3 times, the display area will show “EC” and
14
AC will turn off.
6.4 Operation Modes and Functions
6.4.1 Fan mode
(1) Outdoor fan and compressor stop.
(2) Temperature setting function is disabled, and no setting temperature is displayed.
(3) Indoor fan can be set to high/med/low/auto.
(4) The louver operates same as in cooling mode.
(5) Auto fan:
T1-24
6.0
5.0
4.0
2.5
1.0
H
a
(H-L)*0.75+L
(H-L)*0.5+L
(H-L)*0.25+L
L
b
c
d
e
15
6.4.2 Cooling Mode
6.4.2.1 Compressor running rules
The maximum operation frequency of compressor after starting submits to following rule.
T4
50
Fmax=T4FREMAX1
49
Fmax=T4FREMAX2
45
44
Fmax=T4FREMAX3
41
40
Fmax=T4FREMAX4
33
32
Fmax=T4FREMAX5
30
29
Fmax=T4FREMAX6
22
20
Fmax=T4FREMAX7
Meanwhile, the maximum frequency is limited by the indoor fan speed.
Indoor fan speed
Maximum frequency
High speed / turbo function
No limit
Silent mode
Fixed at F3
If users switch on AC by remote controller, the compressor will run at the Fmax frequency for 7
minutes according to the outdoor ambient temp. During the 7 minutes, the frequency limitation is
active. 7 minutes later, the compressor running frequency will be controlled as below:
16
T1-Ts
3.5
A
3.0
2.5
B
C
2.0
D
1.5
E
1.0
0.5
0.0
F
G
H
-1.0
-1.5
I
J
While the zones of A,B,C... are corresponding to different compressor running frequency.
Note:
When T1-Ts keeps in the same temp. zone for 3 minutes, the compressor will run as the below
rules:
A:Increase the frequency to 3 grade higher until to FREMAX.
B~E: Increase the frequency to 2 grade higher until to FREMAX.
F~G: Increase the frequency to 1 grade higher until to FREMAX.
H: Keep the current frequency.
:
I: Decrease the frequency to 1 grade lower until to F1.
J: Run at F1 for 1h.(if T1-Ts<-2℃, the compressor will stop)
Meanwhile, the compressor running frequency is limited by the current.
17
T4
CoolT4Zone5I
50
49
CoolT4Zone4I
45
44
CoolT4Zone3I
41
40
CoolT4Zone2I
33
32
CoolT4Zone1I
6.4.2.2 Outdoor fan running rules
Cooling
A
28
26
25
B
23
22
C
20
19
D
17
E
While A,B,C…means different fan speed of outdoor unit.
6.4.2.3 Indoor fan running rules
In cooling mode, indoor fan runs all the time and the speed can be selected as high, medium, low,
auto and silent. When the compressor is running, the indoor fan is controlled as below:
18
The auto fan acts as below rules:
T1-Ts
6.0
5.0
4.0
2.5
1.0
H
a
(H-L)*0.75+L
(H-L)*0.5+L
(H-L)*0.25+L
L
b
c
d
e
6.4.2.4 Condenser temperature protection
---55℃<T3<60℃, the compressor frequency will decrease to the lower level until to F1 and then
runs at F1.If T3<54℃, the compressor will keep running at the current frequency.
---T3<52℃, the compressor will not limit the frequency and resume to the former frequency.
---T3>60℃ for 5 seconds, the compressor will stop until T3<52℃.
6.4.2.5 Evaporator temperature protection
---T2<0℃, the compressor will stop and restart when T2>=5℃.
---0℃≦T2<4℃, the compressor frequency will be limited and decreased to the lower level
---4℃≤T2≤7℃, the compressor will keep the current frequency.
---T2>7℃, the compressor frequency will not be limited.
19
6.4.3 Heating Mode
6.4.3.1 Compressor running rules
The maximum operation frequency of the compressor after starting submits to the following rule.
T4
34
33
Off
28
27
Fmax=T4FREHEATMAX1
25
24
Fmax=T4FREHEATMAX2
22
21
Fmax=T4FREHEATMAX3
19
18
Fmax=T4FREHEATMAX4
17
16
Fmax=T4FREHEATMAX5
15
14
Fmax=T4FREHEATMAX6
12
11
Fmax=T4FREHEATMAX7
6
5
Fmax=T4FREHEATMAX8
1
0
Fmax=T4FREHEATMAX9
-3
-4
Fmax=F21
Fmax=F22
-7
-8
Fmax=F23
-11
-12
Fmax=F24
-15
-16
Fmax=F25
20
Meanwhile, the maximum frequency is limited by the indoor fan speed.
Indoor fan speed
Maximum frequency
High speed/8 degree heating/ turbo function
No limit
Medium speed
FHeatMaxMidFan
Low speed/sleep mode
FHeatMaxLowFan
Silent mode
Fixed at F3
If users switch on AC by remote controller, the compressor will run at the Fmax frequency for 7
minutes according to outdoor ambient temp. During the 7 minutes, the frequency limitation is
active.
7 minutes later, the compressor running frequency will be controlled as below:
T1-Ts+¦ ¤T
+5.0
J
+4.5
I
+4.0
H
+3.5
G
+3.0
F
+2.5
E
+2.0
D
C
+1.5
B
+1.0
+0.5
A
While the zones of A,B,C... are corresponding to different compressor running frequency.
ΔT=0℃ as default.
Note:
When T1-Ts keeps in the same temp. zone for 3 minutes, the compressor will run as the below
rules:
A: Increase the frequency to 3 grade higher until to FREMAX.
B~E: Increase the frequency to 2 grade higher until to FREMAX.
F~G: Increase the frequency to 1 grade higher until to FREMAX.
H: Keep the current frequency.
21
I: Decrease the frequency to the 1 grade lower until to F1.
J: Run at F1 for 1h.(if T1-Ts-ΔT >6℃, the compressor will stop)
Meanwhile, the compressor running frequency is limited by the current.
T4
HeatT4Zone4I
15
14
HeatT4Zone3I
10
9.0
HeatT4Zone2I
6.0
5.0
HeatT4Zone1I
6.4.3.2 Outdoor fan running rules
Heating
21
E
19
18
D
16
15
C
13
12
B
10
A
6.4.3.3 Indoor fan running rules
In heating mode, indoor fan can be selected as high, medium, low, auto and silent. The anti-coldwind function is preferential. The running rules of anti-cold-wind function depend on both T1 and
T2 that is more comfortable control.
When the compressor is running, the indoor fan is controlled as below:
22
If the compressor stops caused by the room temperature rising, the indoor fan will be forced to run
127
seconds with breeze. During this period, the anti-cold-wind is disabled.
Auto fan action in heating mode:
T1-Ts+¦ ¤
T
0.0
-1.0
L
(H+-L)*0.2+L
(H+-L)*0.4+L
-2.0
-3.0
(H+-L)*0.6+L
-4.0
(H+-L)*0.6+L
-5.0
-6.0
-6.5
(H+-L)*0.8+L
H+
23
6.4.3.4 Defrosting mode
Condition of defrosting:
If any one of the following items is satisfied, AC will enter the defrosting mode.
After the compressor starts up and keeps running, mark the minimum value of T3 from the 10th
minutes to 15th minutes as T30.
1)If the compressor cumulate running time is up to 29 minutes and T3< TCDI1, T3 +
T30SUBT3ONE≦T30.
2)If the compressor cumulate running time is up to 35 minutes and T3< TCDI2, T3 +
T30SUBT3TWO≦T30.
3)If the compressor cumulate running time is up to 29 minutes and T3< TCDI3 for 3 minutes.
4)If the compressor cumulate running time is up to 120 minutes and T3<-15℃.
Condition of ending defrosting:
If any one of the following items is satisfied, the defrosting will finish and the machine will turn to
normal heating mode.
----T3 rises to be higher than TCDE1℃.
----T3 keeps to be higher than TCDE2℃ for 80 seconds.
----The machine has run for 10 minutes in defrosting mode.
24
Defrosting action:
For KS11MI-07HRFN1-QW, KS11MU-09HRFN1-QRC8W(B), KS11MU-12HRFN1-QRC8W(B)
Frequency F3 FrequencyF16
on
Compressor
4-way valve
Outdoor fan
Indoor fan
off
on
off
on
off
on
off
Indoor fan breeze(10s)
10s
xx
10s
no longer than 10m
30s
xx=60s
For KS11MU-18HRFN1-QRC8GW
Frequency F3 Frequency F16
on
Compressor
4-way valve
Outdoor fan
Indoor fan
off
on
off
on
off
on
off
Indoor fan breeze(10s)
10s
xx
10s
no longer than 10m
xx=60s
6.4.3.5 Evaporator coil temperature protection
25
30s
T2
Off
TEstop
Decrease
TEdown
Hold
TEnorm
Resume
Off: Compressor stops.
Decrease: Decrease the running frequency to the lower level.
Hold: Keep the current frequency.
Resume: No limitation for frequency.
6.4.4 Auto-mode
This mode can be chosen with remote controller and the setting temperature can be changed
between 17~30℃.
In auto mode, the machine will choose cooling, heating or fan-only mode according to ΔT (ΔT
=T1-Ts).
ΔT=T1-Ts
Running mode
ΔT>1℃
Cooling
-1<ΔT≤1℃
Fan-only
ΔT≤-1℃
Heating
Indoor fan will run at auto fan of the relevant mode.
The louver operates same as in relevant mode.
If the machine switches mode between heating and cooling, the compressor will keep stopping for
15 minutes and then choose mode according to T1-Ts.
If the setting temperature is modified, the machine will choose running function again.
6.4.5 Drying mode
6.4.5.1
Indoor fan speed is fixed at breeze and can’t be changed. The louver angle is the same
as in cooling mode.
6.4.5.2
Compressor running rules
26
T1-Ts
2.5
F7
2.0
1.5
F5
1.0
0.5
F3
0.0
F1
6.4.5.3 Low indoor room temperature protection
In drying mode, if room temperature is lower than 10℃, the compressor will stop and not resume
until room temperature exceeds 12℃.
6.4.5.4 Evaporator anti-freezing protection, condenser high temperature protection and outdoor
unit frequency limit are active and the same as that in cooling mode.
6.4.5.5 The outdoor fan operates the same as in cooling mode.
6.4.6 Forced operation function
6.4.6.1 Enter forced operation function:
When the machine is off, pressing the touch button will carry the machine to forced auto mode. If
pressing the button once again within 5 seconds, the machine will turn into forced cooling mode.
In forced auto, forced cooling or any other operation mode, pressing touch button will turn off the
machine.
6.4.6.2 In forced operation mode, all general protections and remote control are available.
6.4.6.3 Operation rules:
Forced cooling mode:
The compressor runs at F2 frequency and indoor fan runs as breeze. After running for 30 minutes.
the machine will turn to auto mode as 24℃ setting temperature.
Forced auto mode:
The action of forced auto mode is the same as normal auto mode with 24℃ setting temperature.
6.4.7 Timer function
6.4.7.1 Timing range is 24 hours.
6.4.7.2 Timer on. The machine will turn on automatically when reaching the setting time.
6.4.7.3 Timer off. The machine will turn off automatically when reaching the setting time.
27
6.4.7.4 Timer on/off. The machine will turn on automatically when reaching the setting “on” time,
and then turn off automatically when reaching the setting “off” time.
6.4.7.5 Timer off/on. The machine will turn off automatically when reaching the setting “off” time,
and then turn on automatically when reaching the setting “on” time.
6.4.7.6 The timer function will not change the AC current operation mode. Suppose AC is off now,
it will not start up firstly after setting the “timer off” function. And when reaching the setting time,
the timer LED will be off and the AC running mode has not been changed.
6.4.7.7 The setting time is relative time.
6.4.8 Sleep function mode
6.4.8.1 Operation time in sleep mode is 7 hours. After 7 hours the AC quits this mode and turns
off.
6.4.8.2. Operation process in sleep mode is as follow:
When cooling, the setting temperature rises 1℃ (be lower than 30℃) every one hour, 2 hours
later the setting temperature stops rising and indoor fan is fixed as low speed.
When heating, the setting temperature decreases 1℃ (be higher than 17℃) every one hour, 2
hours later the setting temperature stops rising and indoor fan is fixed as low speed. (Anti-cold
wind function has the priority)
6.4.6.3 Timer setting is available
6.4.6.4 When user uses timer off function in sleep mode (or sleep function in timer off mode), if the
timing is less than 7 hours, sleep function will be cancelled when reaching the setting time. If the
timing is more than 7 hours, the machine will not stop until reaches the setting time in sleep mode.
6.4.9 Auto-Restart function
The indoor unit is equipped with auto-restart function, which is carried out through an auto-restart
module. In case of a sudden power failure, the module memorizes the setting conditions before
the power failure. The unit will resume the previous operation setting (not including swing function)
automatically after 3 minutes when power returns.
If the memorization condition is forced cooling mode, the unit will run in cooling mode for 30
minutes and turn to auto mode as 24℃ setting temp.
If AC is off before power off and AC is required to start up now, the compressor will have 1 minute
delay when power on. Other conditions, the compressor will have 3 minutes delay when restarts.
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6.4.10 8℃ Heating (optional)
In heating operation, the preset temperature of the air conditioner can be as lower as 8℃, which
keeps the room temperature steady at 8℃ and prevents household things freezing when the
house is unoccupied for a long time in severe cold weather.
6.4.11 Follow me (optional)
1)
If the indoor PCB receives the signal which results from pressing the FOLLOW ME button on
remote controller, the buzzer will emit a sound and this indicates the follow me function is initiated.
But when the indoor PCB receives signal which sent from remote controller every 3 minutes, the
buzzer will not respond. When the unit is running with follow me function, the PCB will control the
unit according to the temperature from follow me signal, and the temperature collection function of
room temperature sensor will be shielded, but the error detective function of room temperature
sensor will be still valid.
2)
When the follow me function is available, the PCB will control the unit according to the room
temperature from the remote controller and the setting temperature.
3)
The PCB will take action to the mode change information from remote controller signal, but it
will not affected by the setting temperature.
4)
When the unit is running with follow me function, if the PCB doesn’t receive any signal from
remote controller for 7 minutes or pressing FOLLOW ME button again, the follow me function
will be turned off automatically, and the temperature collection function of room temperature
sensor will be available, the PCB will control the unit according to the room temperature
detected from its own room temperature sensor and setting temperature.
6.4.12 Self-clean (optional)
For heat pump models which are provided with this function, after running in cooling or drying
mode, if the user press “Self Clean” button on remote controller, firstly, indoor unit runs in fan only
mode for a while, then low heat operation and finally runs in fan only again. This function can keep
the inside of indoor unit dry and prevent breeding of mold.
6.4.13 Refrigerant Leakage Detection
With this new technology, the display area will show “EC” when the outdoor unit detects refrigerant
leakage.
6.4.14 Louver Position Memory Function
When starting the unit again after shutting down, its louver will restore to the angle originally set by
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the user, but the precondition is that the angle must be within the allowable range, if it exceeds, it
will memorize the maximum angle of the louver. During operation, if the power fails or the end
user shuts down the unit in the turbo mode, the louver will restore to the default angle.
6.4.15 INTELLIGENT EYE(optional)
With the built-in infrared sensor, the indoor unit detects human movement. The AC will turn off if
you leave the room for 30 minutes and turn on automatically when you come back, which helps
saving more energy.
6.4.16 Silence operation (optional)
Press the “silence” button on remote controller to initiate SILENCE function. When the Silence
function is activated, the compressor running frequency will keep lower than F2 and the indoor
unit will bring faint breeze, which will reduce the noise to the lowest level and create a quiet and
comfortable room for you.
6.4.17 Frequency limitation protection
V
VOLT_RST1_ADD
Normal
VOLT_LIM1_ADD
VOLT_RST2_ADD
VOLT_LIM_FREQ1_ADD
VOLT_LIM2_ADD
VOLT_LIM_FREQ2_ADD
The PCB will detect the voltage of power supply and adjust the compressor running frequency to
protect the system.
In the first 10 seconds after power on, this protection is inactive.
When this protection happens, it will last 3 minutes and then the PCB will detect the power supply
voltage again.
6.4.18 Mode conflict
The indoor units cannot work cooling mode and heating at same time.
Heating mode has a priority.
6.4.18.1 Definition:
Cooling mode
Heating Mode
Fan
Off
Cooling mode
No
Yes
No
No
Heating Mode
Yes
No
Yes
No
Fan
No
Yes
No
No
Off
No
No
No
No
No: No mode conflict;
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Yes: Mode conflict
6.4.18.2 Unit action

Suppose Indoor unit A working in cooling mode or fan mode, and indoor unit B is set to
heating mode, then A will change to off and B will work in heating mode.
Suppose Indoor unit A working in heating mode, and indoor unit B is set to cooling mode or fan
mode, then B will change to stand by and A will be no change.
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