Frigicoll Kaysun K2UF-280 DN3 User manual

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K2UF-280 DN3
K2UF-335 DN3
K2UF-400 DN3
K2UF-450 DN3
Original instructions
Thank you very much for purchasing our air conditioner,
Before using your air conditioner, please read this manual carefully and keep it for future reference.
OWNER'S
MANUAL

owner's manual
1
CONTENTS PAGE
1. IMPORTANT SAFETY INFORMATION
To prevent injury to the user or other people and property
damage, the following instructions must be followed. Incorrect
operation due to ignoring of instructions may cause harm or
damage.
The safety precautions listed here are divided into two categories. In
either case, important safety information is listed which must be read
carefully.
Never inspect or service the unit by yourself.
Ask a qualified service person to perform this work.
Do not dispose this product as unsorted municipal waste.
Collection of such waste separately for special treatment
is necessary.
Do not dispose of electrical appliances as unsorted
municipal waste, use separate collection facilities.
Contact your local government for information regarding the
connection systems available.
If electrical appliances are disposed of in landfills or
dumps, hazardous substances can leak into the
groundwater and get into the food chain, damaging your
health and well-being.
Keep far away from high-frequency equipment.
Keep away from the following places:
a place where it is full of oil gas; places where salty air
surrounding (near the coast); a place where is caustic gas
(the sulfide in hot spring). Location in the falling places may
cause malfunction or shorten the life span of the machine.
In the case of extremely strong wind, please prevent the
air from flowing backwards into the outdoor unit.
WARNING
Snow canopy is necessary in snowfall places on the
Failure to observe a warning may result in serious injuries.
The appliance shall be installed in accordance with
national wiring regulations.
Failure to observe a caution may result in injury or damage
to the equipment.
Ask your dealer for installation of the air conditioner.
Incomplete installation performed by yourself may result in a
water leakage, electric shock, and fire.
Ask your dealer for improvement, repair, and
maintenance. Incomplete improvement, repair, and
maintenance may result in a water leakage, electric shock,
and fire.
To avoid electric shock, fire or injury, or if you detect any
abnormality such as smell of fire, turn off the power
supply and call your dealer for instructions.
Never replace a fuse with that of wrong rated current or
other wires when a fuse blows out.
Use of wire or copper wire may cause the unit to break down
or cause a fire.
Do not insert fingers, rods or other objects into the air
inlet or outlet.
When the fan is rotating at high speed, it will cause injury.
Never use a flammable spray such as hair spray, lacquers
paint near the unit.
It may cause a fire.
Never touch the air outlet or the horizontal blades while
the swing flap is in operation.
Fingers may become caught or the unit may break down.
The appliance shall be installed in accordance with
national wiring regulations.
outdoor unit. Please consult the local dealer for details.
In the frequent thunderstruck place, lightning proof
actions should be taken.
To prevent refrigerant leak, contact your dealer.
When the system is installed and runs in a small room, it is
required to keep the concentration of the refrigerant, if by any
chance coming out, below the limit. Otherwise, oxygen in the
room may be affected, resulting in a serious accident.
The refrigerant in the air conditioner is safe and normally
does not leak.
If the refrigerant leaks in the room, contact with a fire of a
burner, a heater or a cooker may result in a harmful gas.
Turn off any combustible heating devices, ventilate the
room, and contact the dealer where you purchased the
unit.
Do not use the air conditioner until a service person confirms
that the portion where the refrigerant leaks is repaired.
Do not use the air conditioner for other purposes.
To avoid any quality deterioration, do not use the unit for
cooling precision instruments, food, plants, animals or works
of art.
Before cleaning, be sure to stop the operation, turn the
breaker off or pull out the supply cord.
Otherwise, an electric shock and injury may result.
IMPORTANT SAFETY INFORMATION........................................................1
PARTS NAMES...........................................................................................2
OPERATION AND PERFORMANCE. ..........................................................2
TROUBLES AND CAUSES.........................................................................3
MALFUNCTION ...........................................................................................5
CONSTRAINT COOLING AND QUERY................................................................6
AFTER-SALES SERVICE. ...........................................................................7
CAUTION

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In order to avoid electric shock or fire, make sure that an
earth leak detector is installed.
Be sure the air conditioner is grounded.
In order to avoid electric shock, make sure that the unit is
grounded and that the earth wire is not connected to gas or
water pipe, lightning conductor or telephone earth wire.
In order to avoid injury, do not remove the fan guard of
the outdoor unit.
Do not operate the air conditioner with a wet hand.
An electric shock may happen.
Do not touch the heat exchanger fins.
These fins are sharp and could result in cutting injuries.
After a long use, check the unit stand and fitting for
damage.
If damaged, the unit may fall and result in injury.
To avoid oxygen deficiency, ventilate the room
sufficiently if equipment with burner is used together
with the air conditioner.
Arrange the drain hose to ensure smooth drainage.
Incomplete drainage may cause wetting of the building,
furniture etc.
2. PARTS NAMES
Fig.2-1
Never expose little children, plants or animals directly to
the air flow.
Adverse influence to little children, animals and plants may
result.
Notice to avoid places where operation noise may easily
be spread away or be enhanced.
Noise can be amplified by anything blocking the air
outlet of outdoor unit.
Choose a proper place that the noise and hot or cold wind
blown out of the outdoor unit will not bring inconvenience to
your neighbors and not affect the growth or animal or plant.
Do not allow a child to mount on the outdoor unit or
avoid placing any object on it.
Falling or tumbling may result in injury.
Do not operate the air conditioner when using a room
fumigation - type insecticide.
Failure to observe could cause the chemicals to become
deposited in the unit, which could endanger the health of
those who are hypersensitive to chemicals.
Do not place appliances which produce open fire in
places exposed to the air flow from the unit or under the
indoor unit.
It may cause incomplete combustion or deformation of the
unit due to the heat.
Do not install the air conditioner at any place where
flammable gas may leak out.
If the gas leaks out and stays around the air conditioner, a
fire may break out.
The appliance is not intended for use by young children
or infirm persons without supervision.
Young children should be supervised to ensure that they
do not play with the appliance.
All the pictures in this manual are for explanation purpose
only, There may be slightly different from the air conditioner
you purchased (depend on model). The actual shape shall
prevail.
To avoid danger, never put sticks or other objects into it.
Please preheat the air conditioner for at least 12 hours before
operation. Do not switch off the power if you need to stop the
unit for 24h or shorter time. (This is to heat the crank case
heater to avoid the compulsive start of compressor.)
Make sure the air inlet and outlet are not blocked, or it may
degrade the performance of air conditioner or start up protec-
tor which will stop the unit from running.
3. OPERATION AND PERFORMANCE
Cooling and heating operation of Kaysun inverter central A/C
● The indoor unit of this air conditioner can be controlled solely,
and the indoor unit in the same system can not run cooling and
heating at the same time.
● When the Cooling and Heating operation confront with each
other, please determine the problem according to the settings of
outdoor unit Mode dial code SW5.
1. When set as the Heating Priority Mode, the indoor unit on
Cooling Mode would stop and there will be Standby or No Priority
displayed on the control panel. Those indoor units which are
running on Heating Mode will run continuously.
2. When the Cooling Priority Mode has been set, the indoor unit
on Heating Mode would stop and there will be Standby or No
Priority displayed on the control panel. Those indoor units which
are running on Cooling Mode will run continuously;
NOTE
1
Air inlet (Both in Left and right sides, as well as in rear side. )
2
Refrigerant pipe connective opening
3
Wires outlet (Some types have not wires outlet)
4
Fixed foot
5
Air outlet (Heat air to be blows out in the cooling operation,
vice versa while the heating. )

owner's manual
3
Ⅰ
50℃
45℃
39℃
Pause
The Max. 48Hz
The Max. 60Hz
Accord to the
49℃
44℃
38℃
frequency in the instruction
3. When the Priority Mode has been set, the first indoor unit will
work in Heating Mode that is Heating Priority, please refer to the
ITEM 1 for the control logic. If the first indoor unit is work in
Cooling Mode, that is the Cooling Priority Mode, please refer to
the ITEM 2 for the control logic;
4. In terms of the settings only respond the Heating Mode, the
indoor unit will run in Heating Mode normally, if unit be run in the
Cooling Mode or air Supply Mode, the indoor unit will display
Mode Conflicting;
5. In terms of the settings only respond the Cooling Mode, the
indoor unit will run in Cooling Mode or air supply mode normally,
if unit be run in the Heating Mode, the indoor unit will display
Mode Conflicting.
Features of heating operation
● Warm air will not be blown out immediately at the beginning of the
heating operation, after 3~5minutes (depends on the indoor and
outdoor temperature), until the indoor heat exchanger become
hot, then blows out warm air.
● During operation, the fan motor in the outdoor unit may stop
running under high temperature.
● During Fan operation, if other indoor Units are running on heating
mode, the fan may stop in order to prevent sending heat wind.
Defrost in the heating operation
● During heating operation, outdoor unit sometimes will frost. To
increase efficiency, the unit will start defrosting automatically
(about 2~10 minutes), and then water will be drained out from
outdoor unit.
● During defrosting, both the fan motors in the outdoor unit and
indoor unit will stop running.
Operation conditions
For proper performance, run the air conditioner under the
following temperature conditions:
Table.3-1
Protection Device
This protection device will stop the unit automatically in case
the air conditioner is on forced running mode. When protection
device is activated, running indicator light is lightened and
query light flashes. Protection device may start under the
following circumstances:
cooling operation:
● The air inlet or air outlet of outdoor unit is blocked.
● Strong wind is continuously blowing to the air outlet of the
outdoor unit.
heating operation:
● Too much dust and rubbish adhere to the dust filter in the
indoor unit
Power cut
● If power is cut during operation, stop all the operation
immediately.
● Power comes again. The operation indicator on the wire
controller flashes.
● Push the ON/OFF button again if you want to restart the
unit.
Mishanding in operation
In case of mishandling caused by lighting or mobile wireless,
please switch off the manual power off the manual power.
Push ON/OFF again when restarting.
Heating capacity
● The heating process is :absorb heat from outdoor, while
expel heat to indoor by hot pump. Once the outdoor
temperature drop down, heating capacity is degraded
correspondingly.
● It is command to equip with other warming facility, when
outdoor temperature is low.
● It is better to equip with additional purchase indoor
auxiliary heating device in paramos area where is in
particularly low outdoor temperature. (See Indoor Unit
Operation Manual for detail information)
Protective device may start if running the unit outside the
above condition, which will prevent the unit from operation.
DC compressor frequency-limited control
The Cooling ambient temperature T4 frequency-limited control:
Please switch off the power when protection device starts.
Do not restart until the problems are solved.
For the models with combination
of fixed frequency compressor
and inverter compressor:
For the models with only one
inverter compressor:
4. TROUBLES AND CAUSES
Please see the above graph, the ambient condition is great affect
to the air conditioner, therefore, please install the outdoor unit in a
well-ventilated area prevent from cooling attenuation.
In case the following malfunctions, please switch off the
power and contact the local dealer. Incorrect ON/OFF
operation
Fuse or leakage protector is frequently broken.
Foreign matter or water falls in the unit.
NOTE
CAUTION
Temperature
Mode
Outdoor
temperature
Indoor
temperature
Room relative
humidity
Cooling mode -5°C ~ 48°C
17°C ~ 32°C
below 80%
Heating mode
-15°C ~ 24°C
≤27°C
NOTE
Ⅰ
50℃
43℃
39℃
Pause
The Max. 62Hz
The Max. 70Hz
Accord to the
49℃
42℃
38℃
frequency in the instruction
NOTE

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Please read the following illustration (before apply for
servicing) Table.4-1
Troubles
Causes
Not malfunction
Outdoor unit
White mist or water
The sound of “hiss”
FAN function stops automatically to defrost. It
is the start and stop sound of the solenoid
valve
At the beginning and the end of the running
process, sounds like water flow in valve occurs,
which will be amplified in 3~15 minutes, this is
caused by dehumidifying process of refrigerant
current.
Slight hiss is caused by heat exchanger as
temperature changes.
Pieces of the wall, carpet, furniture, cloth,
cigarette, cosmetics are adhered to the unit.
Switch on the power after the power cut.
Other equipment preheating process stops
cooling operation.
The operator sets an opposite mode against
the fixed cooling and heating mode.
FAN mode stops to avoid cold air blown out.
The master unit with slave units for different
purposes, when abnormal accident happens,
the director will illustrate.
Indoor unit
Bad odor
Operation lamp flashes
No priority of Standby on panel is
lightened
Check it again
Start or stop operation automatically
Wrong operation on timer.
No operation
Whether the power is cut.
Whether manual power switch is turned on.
Whether the fuse is melted.
Whether the protection device works.
(operation lamp is lightened)
Whether it is the time set.
Insufficient cooling
Insufficient heating
Whether the inlet and outlet of outdoor unit is
blocked.
Whether the door and window are open.
Whether the air filter is blocked by dust.
Whether the air deflector is in the right place
Whether fan speed is slight or whether it is in
FAN mode.
Whether the temperature is set properly.
Whether setting COOL and HEAT
simultaneously. (Indicator light Standby or No
Priority on panel is lightened)

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5. MALFUNCTION
Malfunction display of outdoor unit’s DSP1
Table.5-1
No.
Error code
Error or protection type
Note
1
E0
Outdoor units communication error
Only display in slave unit
2
E1
Phase sequence error
3
E2
Indoor units and master unit communication error
4
E3
Reserve
5
E4
The pipe temp. sensor (for sensing the ambient temp) error
6
E5
Reserve
7
E6
Reserve
8
E8
Outdoor unit address error
9
E9
Voltage error
10
H0
The communication error between IR341 and 780034
11
H1
The communication error between 0537 and 780034
12
H2
Outdoor unit qty. decreased error
Only display in master unit
13
H3
Outdoor unit qty. increased error
Only display in master unit
14
H4
P6 protection occur 3 times within 30 minutes
Must be re-powered on for the recovery
15
H
P2 protection occur 3 times within 30 minutes
Must be re-powered on for the recovery
16
H6
P4 protection occur 3 times within 100 minutes
Must be re-powered on for the recovery
17
H7
Indoor unit qty. have decrease
18
H8
Air discharge sensor error
19
H9
P9 protection occur 3 times within 30 minutes
Must be re-powered on for the recovery
20
P0
Inverter upper temp. protection
21
P1
Hi. pressure protection
22
P2
Lo. pressure protection / power error / 3 phase protector error
P2 protection occur, and then vanish
within one minute is normal
23
P3
Inverter overcurrent protection
24
P4
Overheat air discharged temp. protection
25
P5
Hi. pipe temp. protection
26
P6
Modual protection
27
P7
Fixed frequency 1 current protection [ * ]
28
P8
Fixed frequency 2 current protection [ * ]
29
P9
Fan modual protection
30
L0
Modual error
31
L1
Lo. voltage protection of DC main lead
32
L2
Hi. voltage protection of DC main lead
33
L3
Reserve
34
L4
MCE error / synchro / closed loop
35
L5
Zero velocity protection
36
L6
Reserve
37
L7
Phase sequence error protection
38
L8
The different value of previous moment minus the subsequent
moment >15Hz protection
39
L9
The setting speed minus the actual speed>15 protection
* Specification:
1. For the models with combination of fixed frequency compressor and inverter compressor,
P7: Fixed frequency 1 current protection; P8: Fixed frequency 2 current protection
2. For the models with only one inverter compressor,
P7: Reserve; P8: Reserve
If the problem still existing, please contact the sales distributor or Kaysun service center, tell us your model No. and the detail of
the error.

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6. CONSTRAINT COOLING AND QUERY
Constraint Cooling
Once pressing the constraint cooling button (see the chart on
the right), all the indoor unit will be on forced cooling mode and
the wind speed is HIGH.
Fig.6-1
Query
1) This table is appropriate for the models with combination of fixed frequency compressor and inverter compressor.
Table 6-1
Normal display
Display content Note
1
Outdoor unit address
0
2
Outdoor unit capacity
8, 10, 12, 14, 16
3
Modular outdoor unit qty.
Available for master unit
4
Outdoor unit total capacity
Capacity requirement
5
Indoor unit total capacity requirement
Available for master unit
6
The corrected total capacity of unit
Available for master unit
7
Operation mode
0, 1, 2, 3, 4
8
The actual operation capacity of this outdoor unit
Capacity requirement
9
Fan status
0, 1, 2,3, 4, 5, 6, 7, 8, 9
10
T2B/T2 average temp.
Actual value
11
T3 pipe temp.
Actual value
12
T4 ambient temp.
Actual value
13
Inverter air discharge temp.
Actual value
14
Fixed frequency 1 air discharge temp.
Actual value
15
Fixed frequency 2 air discharge temp.
Actual value
16
Inverter current
Actual value
17
Fixed frequency 1 current
Actual value
18
Fixed frequency 2 current
Actual value
19
EXV opening angle
20
Air discharge pressure
Actual value ×0.1 MPa
21
The limitation of Indoor unit proformed mode
0,1,2,3,4
22
Indoor unit qty.
Actual value
23
The last time error or protective code
Without protection or error displays as 00
24
- -
Spot inspection end
The display contents as followings:
1) Normal display: When standby, it displays the indoor unit qty. When receive the capacity requirement, it will
display the compressor rotation frequency.
2) Operation mode: 0—OFF; 1—Air supply; 2—Cooling; 3—Heating; 4—Constraint cooling.
3) Rotation speed: 0—fan stop; 1~9 speed increase sequentially; 9 is the maximum fan speed.
4) PMV opening angle: Pulse count= display value × 8
5) The limitation of Indoor unit proformed mode : 0—Heating Priority Mode; 1—Cooling Priority Mode; 2—Priority
Mode; 3—Only Respond The Heating Mode; 4—Only Respond The Cooling Mode.
6) Indoor unit qty.: The indoor unit which communicate with outdoor unit normally.
MAIN BOARD
(OUTDOOR UNIT)
Query button
Constraint cooling button
CHECK COOL

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6
2) This table is appropriate for the models with only one inverter compressor.
Table 6-2
Normal display
Display content Note
1
Outdoor unit address
0
2
Outdoor unit capacity
8, 10
3
Modular outdoor unit qty.
Available for master unit
4
Outdoor unit total capacity
Capacity requirement
5
Indoor unit total capacity requirement
Available for master unit
6
The corrected total capacity of unit
Available for master unit
7
Operation mode
0, 1, 2, 3, 4
8
The actual operation capacity of this outdoor unit
Capacity requirement
9
Fan status
0, 1, 2,3, 4, 5, 6, 7, 8, 9
10
T2B/T2 average temp.
Actual value
11
T3 pipe temp.
Actual value
12
T4 ambient temp.
Actual value
13
Inverter air discharge temp.
Actual value
14
Fixed frequency 1 air discharge temp.
Actual value
15
Reserved
Reserved
16
Inverter current
Actual value
17
Reserved
Reserved
18
Reserved
Reserved
19
EXV opening angle
20
Air discharge pressure
Actual value ×0.1 MPa
21
The limitation of Indoor unit proformed mode
0,1,2,3,4
22
Indoor unit qty.
Actual value
23
The last time error or protective code
Without protection or error displays as 00
24
- -
Spot inspection end
The display contents as followings:
1) Normal display: When standby, it displays the indoor unit qty. When receive the capacity requirement, it will
display the compressor rotation frequency.
2) Operation mode: 0—OFF; 1—Air supply; 2—Cooling; 3—Heating; 4—Constraint cooling.
3) Rotation speed: 0—fan stop; 1~9 speed increase sequentially; 9 is the maximum fan speed.
4) PMV opening angle: Pulse count= display value × 8
5) The limitation of Indoor unit proformed mode : 0—Heating Priority Mode; 1—Cooling Priority Mode; 2—Priority
Mode; 3—Only Respond The Heating Mode; 4—Only Respond The Cooling Mode.
6) Indoor unit qty.: The indoor unit which communicate with outdoor unit normally.
7. AFTERSALE SERVICE
If the air conditioner was operated abnormally, please plug off the power supply firstly, and contact with Kaysun After-sales Center or
Special Distributor. For detail please refer to the attached accessory Consumer Service Instruction.

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MDV10U-001FW
16126000000245