Hokkaido HKEN-HCNN 642XR User manual

Classic Line Air Conditioner
SERVICE MANUAL
Model:
HKEN-HCNN 642XR
lFeatures
lComfortable: wide-angle airflow
lHealth air purifying
lQuiet operation
lEnergy efficient

CONTENT:
Classic Line Air Conditioner Model: HKEN-HCNN 642 XR

SERIES INTRODUCTION
Classic Line Air Conditioner Model: HKEN-HCNN 642 XR

No.
1
2
3
Operating condition
Norminal cooling
Norminal heating
Norminal electrical
heating
indoor air status
DBOC WBOC
20OC Not control
DBOC WBOC
7OC 6OC
outdoor air status
--- --- --- ---
Standard Situation/Conditions
Series brief introduction
1.Comfortable: wide-angle airflow
The vertical dual-flap and horizontal wide-angle louvers ensure the cool(warm) air reaches every
corner of the room.
2.Health air purifying
An air purifying filter with deodorizing and disinfecting functions keeps the air clean and users
healthy.
3.Quiet operation
Fan With Random-pitched Blades.
Random-pitched blades help reduce operating noise while maintaining a high airflow rate.
4.Energy efficient
The design of inner-grooved copper tube greatly increases the refrigerant contact area and the
efficiency of cooling/heating functions.
5.Convenience
Auto restart and washable panel:
The grille can be removed easily and washed when necessary.Any series have the function then
even if the power falls when the unit is operating unit will automatically return to the operating
settings in use before the power failure when power is restored.
6.Wide variety of functions
24-Hour Timer:
24-hour timer allows users to select the exact time they would like the air conditioner to turn on
and to turn off.Timers on previous models operation based on the number of hours of desired
operation.
7.Night-set models
When the air conditioner is operationg on the timer-off circuit.The preset room temperature
gradually rises(going down in heating)before the unit stops as shown delow.Users can sleep
comfortably without sudden change in temperature.
8.Program”dry”
This function automatically reduces the level of humidity while maintaining the preset indoor
temperature.
27OC 19OC 35OC 24OC
Classic Line Air Conditioner Model: HKEN-HCNN 642 XR

SPECIFICATIONS
Classic Line Air Conditioner Model: HKEN-HCNN 642 XR

Specifications
Model: HKEN-HCNN 642 XR
Cooling capacity(W) 5800(720-6300)W Heating capacity(W) 5800W(1080-7750)W
Cooling coefficient (W/W) 3.01Heating coefficient(W/W) 2.80
Cooling power input (W) 1930(310-2450)W Heating power input(W) 2070W(430-2600)W
Moiture removal (m/h)32.3 X10-3Frequency range(Hz) 50
Operating voltage range V( )230 Refrigerant type R410A
Operating temp.range OC( ) -15 ~ +43 Air sending angle 60O
indoor unit Cross flow fan
Variation of temp.adjust OC( ) +1 Fan type outdoor unit Axial flow fan
Climate type: T1 Class of electric shock I
Indoor unit noise
(cooling) 48/45/41 Outdoor unit noise (cooling) 56
Indoor unit noise
(heating) 44/39/37 Outdoor unit noise
(heating) 56
Net dimensions mm
(indoor unit) 938 x 265 x 182 Net dimensions mm (outdoor unit) 810 x 690 x 288
Packaging dimensions mm
(indoor unit) 1013 x 331 x 277 Packaging dimensions mm (outdoor unit) 949 x 745 x 406
Net/gross weight (kg)
(indoor unit) 12/15Net/gross weight (kg) (outdoor unit) 45/53
Max. mounting height indoor unit 8
difference(m) 10 Piling layers
outdoor unit
4
1900 Current entering side
(indoor/outdoor) Outdoor
Refrigerant charge(g)
(R410A)
Frequency of filter cleaning Once/2 weeks Max. refrigerant charge (g) 15
Compressor model
C-6RVN93H0N Compressor manufacturer HUARUN
Compressor oil charge (cc)
350(poe)
Compressor protector type Internal
length(mm)
2000
Maxi. length of connecting
pipe (m)
15
drain hose
diametre(mm) 16
Cap. tube type muffle
model: TP2YType of tube of evaporator and condenser Internal
thread
Fan speed(H/M/L)(r/min) cool 13 5 0/12 5 0/ 115 0Size of tube of evaporator
(indoor unit) heat 13
5 0/12 5 0/ 115 0and condenser(mm)
Ø6.35/ Ø 12.7
Fan speed(r/min)
(outdoor unit) 760 Appearance features of indoor
unit plastic
two-way 1/4"
Appearance features of outdoor
Cut-off valve(inch) three-way
1/2"
unit metal
Max. operating pressure at Max. operating pressure at
warm side(Mpa) 4.15 cool side(Mpa) 4.15
Classic Line Air Conditioner Model: HKEN-HCNN 642 XR

CURVES OF PERFORMANCE OF COMPRESSOR
Classic Line Air Conditioner Model: HKEN-HCNN 642 XR

150
90
100
110
120
130
140
Curves of cooling capacity and heating capacity as a function of outdoor
temperature(-7OC~43OC)
15
20
25
15
20
25
Classic Line Air Conditioner Model: HKEN-HCNN 642 XR

DESCRIPTION, DIMENSION AND FUNCTION
OF MAIN COMPONENTS AND ACCESSORIES
Classic Line Air Conditioner Model: HKEN-HCNN 642 XR

Inlet grille
Air filter
Vertical flap Power indicator Timer mode indicator Operation mode indicator
Remote signal receiver
Emergency switch(manual)
Test running switch(manual)
Use remote controller to
adjust up and down air flow.
(Don't adjust it manually.) Lights up when unit starts. Lights up when Timer operation
is selected. Lights up during compressor
running.
A beeping sound is generated when
a signal from remote controller is
received.
Used when remote controller is lost or
defective. Unit will run temporarily.
Used only for test running in cooling
when room temp. is below 16oC.
Don't use it in normal operation.
For model: HKEN 642 XR
Classic Line Air Conditioner Model: HKEN-HCNN 642 XR
For model: HCNN 642 XR

938
265
Indoor unit for HKEN 642 XR
NET DIMENSIONS:
182
NET DIMENSIONS: Outdoor unit for HCNN 642 XR
583
113.5
690
810
Classic Line Air Conditioner Model: HKEN-HCNN 642 XR

KNOCK-DOWN DRAWINGS
Classic Line Air Conditioner Model: HKEN-HCNN 642 XR

Model: HSU-18H03/R2(DB)
Classic Line Air Conditioner Model: HKEN-HCNN 642 XR

3
4
5
2
2
6
7
8
9
11
10
1
2
13
1
12
14
5
1
17
6
1 1
8
9
2
2 2
1
2
3
4
2
5
2
6
0
KNOCK-DOWNDRAWINGS FOR OUTDOOR UNIT
Classic Line Air Conditioner Model: HKEN-HCNN 642 XR

BRIEF INTRODUCTION TO
ELECTRICAL CONTROL FUNCTIONS
Classic Line Air Conditioner Model: HKEN-HCNN 642 XR

One. Basic Control
1. Function Display
Lights up when unit starts.Lights up when Timer operation is selectedn；
Red
2. Temperature Adjustment Function
In temperature adjustment function, operation frequency of outdoor unit is
determined based on indoor temperature and set temperature.
During wind speed adjustment, indoor fan PI（D）is controlled as per the needs of
temperature adjustment.
3. Compressor Off
Compressor is off when indoor temperature is 1o above set temperature (heating
mode) / 1o below set temperature (cooling mode).
4. Compressor On
Compressor is on when indoor temperature is -0.67o below set temperature (heating
mode)/ 0.67o above set temperature (cooling mode).
5. Remote Control Operation
In remote control, if temperature changes, PI operation will start in 2s.
If change of set temperature is towards compressor off, compressor will shut down
when it falls into compressor-off temperature range.
6. Indoor Fan Rotate Speed
Mode Wind Speed Rotate Speed（rpm）
Weak 650
Low 950
Middle 1050
High 1150
Heating
Super High --
Weak 650
Low 950
Middle 1050
High 1150
Cooling
Super High --
Low 950
Middle 1050
Ventilation
High 1150
Cooling 1350
Rated Heating 1350
Classic Line Air Conditioner Model: HKEN-HCNN 642 XR

Two. Operation Mode:
1. Half-automatic Operation Mode
Half-automatic function is based on original automatic function.
a. Cooling & Heating Model Unit
When system is on and operation mode switches to automatic, the system will
determine operation mode based on the difference of current set temperature and room
temperature and will start operation as per mode determined. In the following selective
conditions, Tr represents room temperature and Ts represents set temperature.
Upon initial entry into automatic mode, operation mode is selected as per the
following conditions:
Tr≥Ts-3℃Cooling mode is selected
Tr＜Ts-3℃Heating mode is selected
When entering automatic mode, the system can switch between cooling and
heating mode corresponding to change of roomtemperature: If the unit is currently in
cooling mode, compressor will shut down when temperature falls into compressor off
temperature range. 15 minutes after compressor is off, compressor will perform
temperature check, at which time if Tr＜Ts-3℃the system will enter heating mode
otherwise it will remain in cooling mode. If the unit is currently in heating mode,
compressor will shut down when temperature rises into compressor off temperature
range. 15 minutes after compressor is off, compressor will perform temperature check, at
which time if Tr＞Ts+3℃the system will enter cooling mode otherwise it will remain in
heating mode.
2.Cooling Mode:
*Temperature Control Range:16℃---30℃
*Temperature Difference: ±1℃
*In the first 2 minutes after compressor starts, it is not under the control of
temperature sensor.
*Control Feature: When Tr（air intake）>Ts（set）℃,compressor external air fan is on,
indoor fan operates at set speed.
When Tr（air intake）<Ts（set）,compressor external air fan is off,
indoor fan operates at set speed.
When Tr= Ts, the system will remain its original state.
*Wind Speed Control:（temperature difference 1℃）
Automatic: When Tr>=Ts+3℃, high wind；
When Ts+1℃≤Tr Ts+3 ℃, middle wind；
When Tr<Ts+1℃, low wind
Temperature sensor is off and air fan is in low wind speed
Manual: High, middle, low and automatic wind may be set as needed when
unit is on. (The unit will act 5s after receiving remote control signal.)
*Compressor Control: Compressor is not under the control of temperature sensor in
the first 2 minutes after it starts and compressor can only restart at least 3 minutes after it
shuts down. There is no 3-minute protection at initial energization. (There are power
cutoff compensation and 3-minute protection features).
Classic Line Air Conditioner Model: HKEN-HCNN 642 XR

* In case change of set temperature by remote control meets the condition of unit
shut down or unit is powered off manually, the operation is not restricted by the 2-minute
non-response feature and the unit will shut down immediately.
3.Dehumidification Mode:
*Temperature Control Range:16---30℃*Temperature Difference :±1℃
*Control Feature: When Tr >Ts +2 , compressor operates at normal state and℃
indoor fan operates at set speed.
zWhen Tr is between Ts+2℃and Ts, compressor operates at low frequency
and fan is in weak wind mode.
zF Tr <Ts, compressor and external fan will shut down, and indoor fan will stop
for 3 minutes and then enters weak wind mode.
zF There is ±1 set temperature℃difference in each mode.
*Wind Speed Control:
Automatic When Tr >=Ts +5℃, high wind；
When Ts +3℃≤Tr <Ts+5℃, middle wind；
When Ts+2℃≤Tr <Ts+3℃, low wind;
When Ts≤Tr<Ts+2℃, intermittent operation at weak wind;
Tr <Ts, fan will standby for 3 minutes and indoor fan is off
(except oxygen or fresh air feature is set)
Tr<Ts, fan will standby for 3 minutes and enter weak wind mode.
*Compressor Control: Compressor is not under the control of temperature sensor in
the first 2 minutes after compressor starts and compressor can only restart at least 3
minutes after it shuts down. There is no 3-minute protection at initial energization. (There
is 3-minute protection if the unit has power outage compensation feature.
* In case change of set temperature by remote control meets the condition of unit
shut down or unit is powered off manually, the operation is not restricted by the 2-minute
non-response feature and will shut down immediately.
4.Heating Mode:
*Temperature Control Range:16---30℃*Temperature Difference :±1℃
*Control Feature: When for the first time Tr≤Ts, compressor, four-way valve and
external fan are turned on and indoor fan operates at anti cold wind mode. +4o
temperature compensation will automatically be added on entering heating mode.
When Tr >Ts+5, external fan of compressor is off and indoor fan will operate in
residual heat blow mode.
When Tr<Ts+5, compressor, four-way valve and external fan are turned on and
indoor fan operates at anti cold wind mode.
*Indoor Fan Control:
Manual Control: High, middle, low and automatic wind may be set as needed
Automatic Control: when Tr >Ts, high wind, when Ts>=Tr> Ts+2℃, middle wind,
when Tr> Ts+2℃, low wind.
There is no delay when wind speed rise from low to high speed while there is a
3-minute delay when wind speed fall from high to low speed (Fan will operates in high
wind for 3 minutes). The unit can restart at least 3 minutes after shut down. There is no
3-minute protection at initial energization. (There is 3-minute protection if the unit has
power outage compensation feature.
*Compressor Control: Compressor Control: Compressor is not under the control of
temperature sensor in the first 2 minutes after compressor starts and compressor can
only restart at least 3 minutes after it shuts down. There is no 3-minute protection at initial
energization. (There is 3-minute protection if the unit has power outage compensation
Classic Line Air Conditioner Model: HKEN-HCNN 642 XR

feature.
*In case change of set temperature by remote control meets the condition of unit
shut down or unit is powered off manually, the operation is not restricted by the 2-minute
non-response feature and will shut down immediately.
*Anti Current Surge: External fan starts 2s after compressor is on. *Timed Power On
& Off Feature *Sleep Control Feature
*Four-way Valve Control: Four-way valve is on 10s prior to compressor startup and
off 2 minutes and 30 seconds after compressor shutdown.
*Anti Cold Wind Operation:
（1）Compressor operation or compressor operation after defrosting. When indoor
heat exchanger temperature is below 23℃, indoor fan is off; when indoor heat
exchanger temperature is above 23℃, fan operates in weak wind mode.
（2）If, after 4 minutes, coil temperature can not exceed 38℃, fan will operate at set
speed.
（3）If coil temperature exceed 38℃, fan will operate at set speed.
（4）If coil temperature falls below 38℃when compressor is running, fan will still
operate at set speed.
*Residual Heat Blow: Temperature sensor is off: If coil temperature is above 23℃,
fan will enter weak wind mode, if coil temperature below 23℃, indoor fan will stop.
Remote Control Shut Down: Deflector will close after set wind blows for 1 minute.
*Automatic Temperature Compensation in Heating Mode
1 Condition: Compressor shutdown time is less than 5 minutes
2. Operation Rule:
1）Ts =Trc +5℃+（Trc -Tt [The instant when compressor starts up] ）
2）Trc-Tt[The instant when compressor starts up] ≤2℃
Note: The above two conditions are not applicable to initial start-up.
3）Press “–”temperature key on remote control, and resume Ts =Trc+5℃
operation; Press “+”temperature key on remote control, it will operate based on
automatic compensation set value.
4）If Trc -Tt[before compressor is on] ≤0℃, it will operate as per Ts=Trc+5.
3. If ventilation door is in healthy up-flow position, set temperature in heating mode
will be increased by 2℃on its original basis.
5.Defrosting Mode
Air fan will engage in anti cold wind operation based on the data sent by heat
exchanger temperature sensor. Sensor fault will not be checked within the first 2 minutes
after exiting defrosting mode.
6. Negative Ion Health Feature Control
When receiving remote control signal, if fan is operating, negative ion generator will
start working to discharge negative ion.
If air fan is off, negative ion generator will be off.
When negative ion generator is off, if health feature is set, then negative ion
generator will turn on when fan start operation again.
7. Timed Operation
Classic Line Air Conditioner Model: HKEN-HCNN 642 XR

Time count starts based on time difference between timing clock and current clock.
Time off may be set and operation will stop when unit receives time off signal.
Timed on may be set and operation will start when unit receives time on signal.
Timed on/off may be set, which will be performed as per set sequence.
8. Sleep Operation
8－1.In cooling/dehumidification mode, set temperature will rise by 1℃after one
hour of operation and it will rise another 1℃after another hour. The unit will shut down
after operation for another 6 hours.
8－2.In heating mode, set temperature will fall 2℃after one hour and it will fall
another 2℃for another hour and it will rise 1℃after another 3 hours and the unit will
shut down operation after another 3 hours.
8－3 If wind speed of indoor fan is high before setting sleep mode, then it will switch
to middle wind after sleep mode is set. If wind speed of indoor fan is middle before
setting, it will switch to low level after setting. If wind speed of indoor fan is low before
setting, then it will remain unchanged after setting.
9.Trial Operation
Wind speed is high and trial operation will end in 30 mins, and unit will shut down. In
trial operation, the unit will exit trial operation mode when receives remote control signal
and low load protection will not be activated.
10.EEPROM Control
When outdoor unit is supplied with power, if EEPROM parameter is inconsistent with
checksum, EEPROM faults.
When indoor unit receives EEPROM fault signal from outdoor unit, it will display
outdoor unit EEPROM fault.
At this time, control and emergency operation are not accepted and the fault can only
be relieved by power off.
Three. Special Function
1.Power-off Compensation
a Entry Condition: Press sleep key 10 times in 7s and buzzer sounds 4 times and the
current status is saved into indoor unit EEPROM upon the entry.
b. On entering power-off compensation operation, indoor unit operates as per the
following procedures:
The unit operates as per condition set by remote control and emergency setting and
current status is saved into indoor unit EEPROM.
c. Exit Condition: Press sleep key 10 times in 7s and buzzer sounds 2 times
2. Rated Operation
①Rated Cooling
a. Entry Condition: The unit will enter rated cooling upon receipt of remote control
signal.
b. Indoor unit will operate as per the following procedures when entering remote
control cooling mode:
Air fan will enter manual high wind (or rated wind) operation, panel will display
cooling and rated data signal is in communication.
c. Exit Conditions: The unit will exit rated operation when receiving remote control or
press-key signal and it will enter the mode set by remote control and press key.
Classic Line Air Conditioner Model: HKEN-HCNN 642 XR