Page 1
Commercial Air Conditioning
SERVICE MANUAL
Model
HBU-18CF03
HDU-42CF03/H
HPU-42HF03
Features
Long distribution pipe and high drop
Auto-check function
Flexible and easy installation
Fresh air hole, more natural, more healthy
Infrared remote controller & wired controller
● Optional safety devices and much more precision control device
Manual code: SYJS-019-05REV.0
Edition: 2005-12-01
Page 2
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
2
CONTENTS
Contents……………………………………………………….....2
1. Description of products & features………………………....3
2. Specification…………………………………………………..7
3. Safety precaution……………………………………………11
4. Net dimension of indoor and outdoor……………………..13
5. Installation instructions………..…………………………….16
6. Parts and functions………………………………………….37
7. Remote controller functions………………………………...40
8. Refrigerant diagram………………………………………....61
9. Electrical control functions………………………………….64
10. Diagnostic information (trouble shooting)………………..70
11. Electrical data……………………………………………….74
12. Air velocity distribution……………………………………..88
Page 3
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
3
1.DESCRIPTION OF PRODUCTS & FEATURES
1.1. Products code explanation
H BU---18 C F 03
Applicable voltage: 03 stands for 200-220V/50Hz
Design number
Product type: H stands for heat pump type, C stands for cool
only type, E stands for electric heating type
Cooling / Heating capacity,18=18000BTU/h
Product type : “B” stands for cassette type, “C” stands for
convertible type, ”D” stands for duct, “P” stands for cabinet
type, ”Q” stands for chiller system, "E" stands for ceiling
concealed type, “U” stands for outdoor unit
Haier
1.2 Brief Introduction for T1、T2、T3 working condition
1.3 Operating Range of Air Conditioners
Temp. Mode Rated Maximum Minimum
DB ℃
27 32 15
Indoor
WB ℃
19 23 14
DB ℃
35 43 -5
Cooling
Outdoor
WB ℃
24 26 6
DB ℃
20 27 10
Indoor
WB ℃
14.5 --- --
DB ℃
7 23 -10
Heating
Outdoor
WB ℃
6 18 ---
Climate type
Type of Air
Conditioner
T1 T2 T3
Cooling Only
18 ℃~43℃ 10℃~35℃ 21℃~52℃
Heat pump
-7℃~43℃ -7℃~35℃ -7℃~52℃
Electricity Heating
~43℃ ~35℃ ~52℃
Page 4
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
4
1.4 Products line up
HBU-18CF03 HDU-42CF03/H HPU-42HF03
1.5 Product features
1.5.1 Outdoor unit
.
Flexible and easy installation
The outdoor can meet the higher request of installation. From the specifications, you will find for
each unit, how long and how high the piping will be, which will be convenient for design and installation.
Optional safety devices and much more precision control device
a. Ambient temperature sensor, coil temperature sensor and compressor temperature sensor
make the temperature control and defrosting control more precise.
b. High/low pressure s witch can feel the discharging pipe pressure and suction pipe pressure on
time and precisely. If the pressure is too low or too high, it will stop the compressor to prevent it
being damaged for the sake of pressure.
c. 3 minutes delay protection for the compressor, the device can protect the compressor from
some damages and make the compressor have a long life.
Silent operation
New design of long piping length and large drop
Page 5
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
5
1.5.2 Indoor unit
1.5.2.1 Noblest cassette indoor unit
Compact indoor unit body
The dimsension of indoor unit is 570×570×260, convenient for installation in the ceiling, perfectly
match with the decor of indoor decoration and be in accordance with the standard of aesthetics.
Fresh air inlet hole
The cassette indoor unit is equipped with a fresh air hole, from which you can get the fresh air from
the outdoor, to improve the indoor air quality. More natural and more healthier.
Convenient infrared remote controller
The newly designed infrared remote controller YR-H71 can be used for all indoor units of single type,
multi split type, and H-MRV type except for the cabinet unit. This controller can be comp atible with all old
remote controllers except for that of cabinet units.
Auto-check function
The unit can display the malfunction codes on the control board by using advanced auto-check
technology, convenient for user find and dwell with the abnormal running.
Built-in high head drain water pump
Due to the internal float switch, built-in drain water pump can drain water automatically when the
condensation is full enough and necessary to be cleaned, the standard he ad height can be u p to 600mm,
realizing the most effective water drainage.
Quiet operation
The unit is equipped with the greatly powerful, smooth, and ultra quiet multi-blade fan, which has the
irregular helix, and can run in silence.
1.5.2.2 Elegant duct indoor unit
Space saving design
With the minimum thickness of only 225mm, the unit almost can be installed into any ducted space.
It needs not the very big space, and will not effect the exterior decoration, only leave people comfortable
air not feeling its existence.
High efficiency filter
The unit adopts G3 grade filter, can efficiently filter the dirt etc, and improve the room air quality, at
the same time, the filter can pull out from downside, convenient for maintenance and cleaning.
Multi-mode for installation
The indoor unit can be installed with or without an air return duct according to the installation need.
Page 6
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
6
Free setting of air discharging duct
The number of the airflow outlet and its installation position can be freely selected according to the
environment of the room, sufficiently considering the load of the room and the uniform temperat ure of the
room to realize more perfect comfort.
High esp design
Max. external static pressure of 196 Pa brings the quick temperature adjustment to the room.
Adopts high pressure fan to provide quich speed of air blowing while keeping a low sound level and
ensuring a good air circulation of the whole indoor space.
Ultra high head water drain up
The duct unit adopt the water pump, which can be up to 600mm.
1.5.2.3 Steady cabinet indoor unit
Powerfull running & long distance air sending
The unit can run powerfully and supply large volume of cooled air to the room. Long distance and
large angle air sending ensures average temperature distribution, bring you much more comfortable
indoor environment in the shortest time.
Newly designed display panel, more simple
On the display panel there are power, operation, timer, and electric heating indicator, from which
you can find the operation state directly, and the indicator flash times can show the failure.
Malfunction Auto-checking
Failure codes displayed by LED or controllers are so detailed for us to find the fail place more
quickly, and can judge the failure content easily.
Powerfull/Soft function
Special button on remoto controller is used to set powerful working or soft working.
Single fan outdoor, more compact
Central control function, if connected with a detector and a central
controller
Page 7
Function
coolin
g
heatin
g
Capacity BTU/h
17000 /
Capacity kW
5
/
Sensible heat ratio
75% /
W
1780 /
W
2400 /
EER or COP
W/W
2.81 /
Dehumidifying capacity
10‐³×m³/h
Power cable section
Signal cable section
Connecting cable section
Wired control cable for wired control unit section
//
Power source N, V, Hz
A / A
Start Current A
Class of anti electric shock
I
/
Circuit breaker A
/30
Max. operating pressure of heat side Mpa
Max. operating pressure of cold side Mpa
Unit model (color)
Type × Number
Speed(H-M-L) r/min
Fan motor output power kW
Air-flow(H-M-L) m³/h
Type / Diameter mm
Total Area m²
Temp. scope
℃
External
（L×W×H）
mm×mm×mm
Package
（L×W×H）
mm×mm×mm
Air sending angle
//
Drainage pipe (material , I.D./O.D.) mm
Control type (Remote /wired /model)
Fresh air hole dimension mm
Outlet distribution hole dimension mm
kW
dB(A)
kg / kg
External
（L×W×H）
mm×mm×mm
Package
（L×W×H）
mm×mm×mm
kg / kg
Unit model (color)
Model / Manufacture
Oil model
Oil type
Oil charging
Type
Protection type
Starting method
Type × Number
Speed r/min
Fan motor output power kW
Air-flow(H-M-L) m³/h
Type / Diameter mm
Row / Fin pitch
Temp. scope
℃
External
（L×W×H）
mm×mm×mm
Package
（L×W×H）
mm×mm×mm
Drainage pipe (material , I.D./O.D.) mm
Refrigerant control method mm/mm
Volume of Accumulator L
Noise level dB(A)
material of reduce noise
crankcase heater power W
kg / kg
Type / Charge g
Recharge quantity g/m
Liquid mm
Gas mm
Connecting Method
m
m
Norminal condition: indoor temperature (cooling): 27℃DB/19℃WB, indoor temperature (heating): 20℃DB
Outdoor temperature(cooling): 35℃DB/24℃WB, outdoor temperature(heating): 7 ℃DB/6℃WB
The noise level will be measured in the third octave band limited values, using a Real Time Analyser calibrated sound intensity meter. It is a
sound pressure noise level.
750±20/650±30/520±30
1,220-230,50
Indoor unit
HBU-18HF03(INDOOR) (WHITE)
Noise level (H-M-L)
Electricity Heater
8.2/11.0
40
/
570×570×260
REMOTE
0.055
item Model
HBU-18CF03
1.6
3×2.5mm2
Total power input
Max. power input
Running /Max.Running
Centrifugal×1
0.03
2500
/
TH338VEEC MITSUBISHI
3.5/4.5
740×750×115
/
520
inset protector
Outdoor unit
HBU-18CF03(OUTDOOR)（WHITE）
Weight (Net / Shipping)
25/27
Panel
Dimension
815×340×680
960×406×750
/
cooling: 43~60 / heating: 6~7
PIPING
R22/1800
/
Pipe
6.35
12.7
Flared
Between I.D &O.
MAX.Drop 5
MAX.Pi
ping
length 15
Axial × 1
Weight (Net / Shipping)
53/56
Type of Four way valve
/
/
Heat exchanger
/
Refrigerant
Defrosting
Automatic
/
/
45/40/32
/
56
860±30
ROTARY
force start
/
Capillary tube
Fan
Heat exchanger
Fan
Dimension
Compressor
Weight (Net / Shipping)
Dimension
/
3×2.0mm2
2.94
2.94
DIAMOND MS-56
/
/
670
700×700×60
cooling: 43~60 heating:6~7
718×680×380
2. Specification
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
7
Page 8
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
8
Function
coolin
g
heatin
g
Capacity BTU/h
42600 /
Capacity kW
12.5 /
Sensible heat ratio
75% /
W
4700 /
W
5700 /
EER or COP
W/W
2.66 /
Dehumidifying capacity
10‐³×m³/h
Power cable section
Signal cable section
Connecting cable section
Wired control cable for wired control unit section
/
4×0.33mm²屏蔽线
Power source N, V, Hz
A / A
Start Current A
Class of anti electric shock
I/
Circuit breaker A
/30
Max. operating pressure of heat side Mpa
2.8 /
Max. operating pressure of cold side Mpa
0.8 /
Unit model (color)
Type × Number
Speed(H-M-L) r/min
Fan motor output power kW
Air-flow(H-M-L) m³/h
Type / Diameter mm
Total Area m²
Temp. scope
℃
External
（L×W×H）
mm×mm×mm
Package
（L×W×H）
mm×mm×mm
Air sending angle
//
Drainage pipe (material , I.D./O.D.) mm
Control type (Remote /wired /model)
Fresh air hole dimension mm
Outlet distribution hole dimension mm
kW
dB(A)
kg / kg
External
（L×W×H）
mm×mm×mm
Package
（L×W×H）
mm×mm×mm
kg / kg
Unit model (color)
Model / Manufacture
Oil model
Oil type
Oil charging
Type
Protection type
Starting method
Type × Number
Speed r/min
Fan motor output power kW
Air-flow(H-M-L) m³/h
Type / Diameter mm
Row / Fin pitch
Temp. scope
℃
External
（L×W×H）
mm×mm×mm
Package
（L×W×H）
mm×mm×mm
Drainage pipe (material , I.D./O.D.) mm
Refrigerant control method mm/mm
Volume of Accumulator L
Noise level dB(A)
material of reduce noise
crankcase heater power W
kg / kg
Type / Charge g
Recharge quantity g/m
Liquid mm
Gas mm
Connecting Method
m
m
4×0.75mm2
SUNISO 4GSDID-K/DAPHNE SE56P
/
1500-1700
0.27
2040
Norminal condition: indoor temperature (cooling): 27℃DB/19℃WB, indoor temperature (heating): 20℃DB
Outdoor temperature(cooling): 35℃DB/24℃WB, outdoor temperature(heating): 7 ℃DB/6℃WB
The noise level will be measured in the third octave band limited values, using a Real Time Analyser calibrated sound intensity meter. It is a
sound pressure noise level. The detailed method please refer to the following information:
1070±30/950±40/860±50/690±50
3，380-400，50
Indoor unit
HDU-42CF03/H(INDOOR)（WHITE）
Noise level (H-M-L)
Electricity Heater
cooling 8.2/9.5
50
/
/
cooling: 43~60 / heating: 6~7
1450×980×530
/
1197×828×355
wired
/
item Model
HDU-42CF03/H
5.0
5×2.5mm2
Total power input
Max. power input
Running /Max.Running
Centrifugal × 1
0.156
6000
TP2M / 9.52x0.36
Outdoor unit
HDU-42HF03/H(INDOOR)（WHITE）
Weight (Net / Shipping)
62/77
Panel
Dimension
1008×830×480
1130×930×490
2 1.65
cooling: 43~60 / heating: 6~7
Heat exchanger
TP2M / 9.52x0.36
PIPING
R22/3150
/
Pipe
9.52
19.05
Flared
Between I.D &O.
MAX.Drop 30
MAX.Pi
ping
length 50
Weight (Net / Shipping)
75/85
Type of Four way valve
/
/
Defrosting
Automatic
/
Axial × 1
JT160BCBY1L DAKIN
/
/
硬启动
内置保护器
/
Capillary tube
Refrigerant
/
/
55/52/47
/
64
740±50
SCROLL
Fan
Heat exchanger
Fan
Dimension
Compressor
Weight (Net / Shipping)
Dimension
Page 9
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
9
Function
cooling heating
Capacity BTU/h
41000 44000
Capacity kW
12 13
Sensible heat ratio
75% /
W
4700 4850
W
5200 5600
EER or COP
W/W
2.55 2.68
Dehumidifying capacity
10‐³×m³/h
Power cable section
Signal cable section
Connecting cable section
Wired control cable for wired control unit section
//
Power source N, V, Hz
A / A
Start Current A
Class of anti electric shock
II
Circuit breaker A
30 30
Max. operating pressure of heat side Mpa
2.8 2.8
Max. operating pressure of cold side Mpa
2.8 2.8
Unit model (color)
Type × Number
Speed(H-M-L) r/min
Fan motor output power kW
Air-flow(H-M-L) m³/h
Type / Diameter mm
Total Area m²
Temp. scope
℃
External
（L×W×H）
mm×mm×mm
Package
（L×W×H）
mm×mm×mm
Air sending angle
//
Drainage pipe (material , I.D./O.D.) mm
Control type (Remote /wired /model)
Fresh air hole dimension mm
Outlet distribution hole dimension mm
kW
dB(A)
kg / kg
External
（L×W×H）
mm×mm×mm
Package
（L×W×H）
mm×mm×mm
kg / kg
Unit model (color)
Model / Manufacture
Oil model
Oil type
Oil charging
Type
Protection type
Starting method
Type × Number
Speed r/min
Fan motor output power kW
Air-flow(H-M-L) m³/h
Type / Diameter mm
Row / Fin pitch
Temp. scope
℃
External
（L×W×H）
mm×mm×mm
Package
（L×W×H）
mm×mm×mm
Drainage pipe (material , I.D./O.D.) mm
Refrigerant control method mm/mm
Volume of Accumulator L
Noise level dB(A)
material of reduce noise
crankcase heater power W
kg / kg
Type / Charge g
Recharge quantity g/m
Liquid mm
Gas mm
Connecting Method
m
m
force start
SUNISO 4GSDID-K/DAPHNE SE56P
/
1500-1700
inset protector
item Model
HPU-42HF03
Total power input
Max. power input
5.0
5×2.5mm2
3，380-400，50
6×0.75mm2
Running /Max.Running
cooling 8.5/9.3 heating8.8/9.6
50
Indoor unit
HPU-42HF03(INDOOR)（WHITE）
Fan
Centrifugal × 1
590±30/400±40/350±50
0.15
1560
Heat exchanger
TP2M / 9.52x0.36
/
cooling: 43~60
Dimension
1820×530×310
1900×620×415
/
REMOTE
/
/
Electricity Heater
/
Noise level (H-M-L)
56/46/40
Weight (Net / Shipping)
60/64
Panel
Dimension
/
/
Weight (Net / Shipping)
/
Outdoor unit
HPU-42HF03(OUTDOOR)（WHITE）
Compressor
JT160BCBY1L DAKIN
SCROLL
Fan
Axial × 1
740±50
0.156
6000
Heat exchanger
TP2M / 9.52x0.36
2 1.65
cooling: 43~60 / heating: 6~7
Dimension
1006×825×410
1130×930×490
/
Capillary tube
Defrosting
Automatic
/
59
Type of Four way valve
/
/
/
Weight (Net / Shipping)
80/90
PIPING
Refrigerant
R22/3150
/
Pipe
9.52
19.05
Flared
Between I.D &O.
MAX.Drop 30
MAX.Piping length 50
Norminal condition: indoor temperature (cooling): 27℃DB/19℃WB, indoor temperature (heating): 20℃DB
Outdoor temperature(cooling): 35℃DB/24℃WB, outdoor temperature(heating): 7 ℃DB/6℃WB
The noise level will be measured in the third octave band limited values, using a Real Time Analyser calibrated sound intensity meter. It is a
sound pressure noise level.
Page 10
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
10
Note: ⊙ is the real time
analyser position
duct unit without auxiliary duct: duct unit with auxiliary duct:
outdoor unit:
1.air outlet from side: the noise level is the average sound pressure level measured from front, left, right directions.
2.air outlet from top: the noise level is the average sound pressure level measured from front, back, left, right directions.
measured point:
H ( height to the ground) = (h (unit height) + 1m) /2
and, it is 1m to each side.
Installation state: the unit should be placed on the flat floor or be mounted in horizontal direction.
Testing method:
standing-on-floor unit: If the unit cooling capacity is
over 28000W, the noise level should be measured at
the front, left, right directions respectively.
built-in-ceiling unit:
1m
1m
1.4m
2m
duct
auxiliary duct
2m
1.4m
1m
auxiliary duct
h
1m
1m
1m
1m
1.4m
Page 11
3. Safety precaution of indoor and outdoor
Carefully read the following information in order to operate the airconditioner correctly.
Below are listed three kinds of Safety Cautions and Suggestions.
WARNING!
CAUTION!
Incorrect operations may result in injuries or machine damages; in some cases may
cause serious consequences.
Incorrect operations may result in severe consequences of death or serious injuries.
INSTRUCTIONS: These information can ensure the correct operation of the machine.
Be sure to conform with the following important Safety Cautions.
The Safety Cautions should be at hand so that they can be checked at any time when needed.
If the conditioner is transferred to the new user, this manual should be as well transferred to the new user.
WARNING!
If any abnormal phenomena is found
(e. g.smell of firing), please cut off the
power supply immediately, and contact
the dealer to find out the handling
method.
Don't dismantle the outlet of the
outdoor unit.
The exposure of fan is very dangerous
whichmay harm human beings.
switch
off
In such case, to continue using the
conditioner will damage the conditioner,
and may cause electrical shock or fire
hazard.
Incorrect maintenance and repairment
may cause water leak, electrical shock
and fire hazard.
When need maintenance and repairment,
call dealer to handle it.
After a long time use of air-conditioner
the base should be checked for any
damages.
If the damaged base is not repaired, the
unit may fall down and cause accidents.
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
11
Page 12
Air-conditioner can't be installed in
the environment with inflammable
gases because the inflammable gases
near to air-conditioner may cause fire
hazard.
Connect earthing wire.
Use discharge pipe correctly to ensure
efficient discharge.
Earthing wire should not be connected to the gas pipe, water pipe,
lightning rod or phone line, in-correct
earthing may cause shock.
Incorrect pipe use may cause water
leaking.
Earthing
WARNING!
Installed electrical-leaking circuit
breaker.
It easily cause electrical shock without
circuit breaker.
Please let the dealer be responsible for
installing the conditioner.
Incorrect installation may cause water
leak, electrical shock and fire hazard.
Call the dealer to take measures to
prevent the refrigerant from leaking.
If conditioner is installed in a small
room be sure to take every measure in
order to prevent suffocation accident
even in case of refrigerant leakage.
When conditioner is deinstalled or
reinstalleddealer should be responsible
for them.
Incorrect installation may cause water
leaking, electrical shock and fire hazard.
No goods or nobody is permitted to
placed on or stand on outdoor unit.
The falling of goods and people may
cause accidents.
Don't operate the air-conditioner with
damp hands.
Otherwise will be shocked.
Only use correctly-typed fuse.
May not use wire or any other materials
replacing fuse, other-wise may cause
faults or fire accidents.
Page 13
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
13
4. Net dimension of indoor and outdoor
HBU-18CF03
Page 14
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
14
HDU-42CF03/H
410
Power wiring terminal
20
20
60
1006
70
180
447
825
>300
180
>150
646
>100
>100
>600
Page 15
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
15
HPU-42HF03
410
Power wiring terminal
20
20
60
1006
70
180
447
825
>300
180
>150
646
>100
>100
>600
20/
0//
0//
42/
051/
+NN,
3/
PQSRT
EDJ;F
FIC
H?B;F
>;7H;F
DC.D<<
Page 16
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
16
5. Installation instructions
5.1 Outdoor unit
"Edging" for protection of electric wires from an opening edge.
Selection of the place of installation
Select the place of installation satisfying the following conditions and,
at the same time, obtain a consent from the client or user.
Place where air circulates.
Place free from heat radiation from other heat sources.
Place where drain water may be discharged.
Place where noise and hot air may not disturb the neighborhood.
Place where there is not heavy snowfall in the winter time.
Place where obstacles do not exist near the air inlet and air outlet .
Place where the air outlet may not be exposed to a strong wind.
Place surrounded at four sides are not suitable for installation. A 1m or more of overhead space is
needed for the unit.
Mount guide-louvers to place where short-circuit is a possibility.
When installing several units, secure sufficient suction space to avoid short circuiting.
(1) Open space requirement around the unit
Note :
(1). Fix the parts with screws
(2). Don't intake the strong wind directly to
the outlet air-flow hole.
(3). A one meter distance should be kept
from the unit top
(4). Don't block the surroundings of the
unit with sundries
Page 17
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
17
(2) Installation where the area with strong winds.
Install the unit so that the air outlet section of the unit must NOT be faced
toward wind direction.
Installation
Fix the unit in a proper way according to the condition of a place where it is installed by referring to the
following .
(1) Installation
Note: Give enough room for the concrete
foundation to fix by anchor bolts. Note: Place the concrete foundation deep
enough.
Install the unit so that the angle of inclination must be less than 3 degrees.
(2) Installation sketch of outdoor unit
HBU-18CF03
Page 18
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
18
HDU-42CF03/H HPU-42HF03
Refrigerant piping
(1) Outline piping
(2) Piping size
Liquid pipe
Φ6.35x0.8mm
HBU-18CF03
Gas pipe
Ф12.7x1.0mm
Liquid pipe
Ф9.52x0.8mm
HDU-42CF03/H
Gas pipe
Ф19.05x1.0mm
Liquid pipe
Ф9.52x0.8mm
HPU-42HF03
Gas pipe
Ф15.88x1.0mm
Page 19
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
19
97.2-118.6N.m
Precautions for refrigerant piping
Do not twist or crush piping.
Be sure that no dust is mixed in piping.
Bend piping with as wide angle as possible.
Keep insulating both gas and liquid piping.
Check flare-connected area for gas leakage.
Connecting method (indoor unit)
Apply refrigerant oil at half union as large and flare nut.
To bend a pipe, give the roundness as possible not to crush
the pipe.
When connecting pipe, hold the pipe centre to centre then
screw nut on by hand, refer to Fig.
Be careful not to let foreign matters, such as sands enter
the pipe.
Piping connection
Forced fastening without centering
may damage the threads and cause
a gas leakage.
Pipe diameter
Fastening torque
Liquid pipe 6.35mm
Gas pipe 15.88mm
Liquid pipe 9.52mm
Gas pipe 19.05mm
14.2-17.2N.m
61.8-75.4N.m
32.7-39.9N.m
Gas pipe 12.7mm
49.5-60.3N.m
After finishing connection of refrigerant pipe, it shall perform air tightness test.
The air tightness test adopts nitrogen tank to give pressure according to the pipe connection
mode as the following figure shown.
The gas and liquid valve are all in close state. In order to prevent the nitrogen entering the
circulation system of outdoor unit, tighten the valve rod before giving pressure (both gas
and liquid valve rods).
Outdoor
Completely tightened
Completely tightened
Flare part
Outdoor units
Mainhole
Discharging valve
3-way valve totally closed
(Gas side)
Low pressure gauge
High pressure gauge
Meter separator
Dropping valve
2-way valve totally closed
(Liquid side)
Nitrogen tank
VL
VH
Indoor units
Indoor
Flare part
Air discharging method
Page 20
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
20
It shall use the vacuum pump of (lower than -755mmHg)high vacuum degree and large air
discharging (over 40l/min).
The vacuumizing time depends on the length of the connecting pipe, generally is 1~2 hours.
When vacuumizing, it shall be confirmed both gas and liquid side valves are closed.
If after 2 hours vacuumizing, it cannot reach the vacuum degree below -755mmHg, it can be
vacuumized for other 1 hour.
If after 3 hours vacuumizing, it still cannot reach the vacuum degree below -755mmHg, check
if there is any leaking point and repair the them.
First step: 0.3MPa (3.0kg/cm2g) pressurize over 3 minutes.
Second step: 1.5Mpa (15kg/cm2g) pressurize over 3 minutes. Large leakage will
be found.
Third step: 3.0 MPa (30kg/cm2g) pressurize about 24 hours. Little leakage will be
found.
From the first to third steps, if the pressure drops, check the leakage in each joint
by the sense of hearing, feeling or soap water, etc. to find the leaking point.
After confirming the leaking point, welding it again or tighten the nut tightly again.
Checking the leaking point
After pressurizing for 24 hours, each 1 C difference of ambient temperature
will result in 0.01MPa(0.1kg/cm2g) pressure change. It shall be corrected during test.
Check if the pressure drops
If the pressure does not drop, the unit is passed
If the pressure drops, please check the leaking point.
Use vacuum pump to perform vacuumizing. It is strictly forbidden to use the
refrigerant to remove the air inside the system.
After air tightness test and discharging all the nitrogen, connect the vacuum pump
as the following figure shown.
Piping and indoor unit vacuumizing
2-way valve totally closed
(Liquid side)
Indoor units
Indoor
Outdoor
Completely tightened
Completely tightened
Outdoor units
Vacuum pump
Discharging valve
3-way valve totally closed
(Gas side)
Low pressure gauge
High pressure gauge
Meter separator
V L
VH
Flare part
Flare part
P
Page 21
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
21
If after over 2 hours vacuumizing, the vacuum degree is below -755mmHg, close the V
L and VH on the
meter separator and stop vacuumizing. 1 hour later to confirm if the vacuum degree changes. If changes,
it indicates there is leaking point in the system. Check the leaking point and
repair.
After finishing the above vacuumizing, change the vacuum pump into refrigerant pump to charge the
refrigerant.
When the total length (L) of the two indoor units' connecting pipe is less than 5m, it is unnecessary to
charge additional refrigerant.
If the connecting pipe (L) exceeds 5m, it shall charge Mg additional refrigerant per meter.
That is: Refrigerant charging amount = (L-5) x M (g)
For the unit with liquid pipe 6.35mm, M=30
For the unit with liquid pipe 9.52mm, M=65
Only in COOLING operation can charge the additional refrigerant.
When charging, the refrigerant shall be charged from the charging nozzle of low pressure vavle.
Be carefull when charging refrigerant, do not let the air mix into the system,and must charge the additional
refrigerant in liquid condition.
Charging amount of refrigerant
Electric wiring
DANGER OF BODILY INJURY OR DEATH
TURN OFF ELECTRIC POWER AT CIRCUIT BREAKER OR POWER
SOURCE BEFORE MAKING ANY ELECTRIC CONNECTIONS.
GROUND CONNECTIONS MUST BE COMPLETED BEFORE MAKING
LINE VOLTAGE CONNECTIONS.
(1) Selection of size of power supply and interconnecting wires.
Precautions for Electric wiring
Electric wiring work should be conducted only by authorized personnel.
Do not connect more than three wires to the terminal block. Always use round
type crimped terminal lugs with insulated grip on the ends of the wires.
Use copper conductor only.
Select wire sizes and circuit protection from table below. (This table shows 20 m
length wires with less than 2% voltage drop.)
WARNING
30mA
Item
Model
Phase
1
Switch breaker
(A)
Circuit breaker
Overcurrent protector
rated capacity (A)
Power source
wire size
(minimum)
30 20 2.5mm
2
3
30 20 2.5mm
2
Switch
breaker
Earth leakage breaker
Leak
current
30 30mA
30
HDU-42CF03/H
HBU-18CF03
Page 22
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
22
(2) Wiring connection
Make wiring to supply power to the outdoor unit, so that the power for the indoor unit is supplied by
terminals.
For the detailed wiring connection with the indoor units, see the corresponding indoor operation
and instruction manual.
To Indoor Unit
1(L) 2(N) 3 4
Y/G
POWER SUPPLY:
3N~,380-400V,50Hz
N 1 2 3
Y/G
R S T
HDU-42CF03/H
To Indoor Unit
HDU-42CF03/HHDU-42CF03/H
INDOOR UNIT TERMINAL BLOCK
Y/G
Y/G
HPU-42HF03
OUTDOOR UNIT
TERMINAL BLOCK
N L N 3 4 5
R S T
W B R BR GR
L N 3 4 5
POWER SUPPLY
HBU-
18CF03
(3) Wiring procedure
1) Remove set screws on the side before taking off the front panel toward
the direction shown in figure.
2) Connect wires to the terminal block correctly and fix the wires with a
wire clamp equipped nearby the terminal block.
3) Route the wires in a proper way and penetrate the wires through the
opening for electric wiring on the side panel.
Page 23
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
23
5.2 Indoor unit installation
5.2.1 Cassette indoor unit(HBU-18CF03)
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Page 24
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
24
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Page 25
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
25
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Page 26
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
26
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Page 27
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
27
5.2.2 Duct indoor unit(HDU-42CF03/H)
(1) The position relation among hoisting screw (unit: mm)
(3) Hanger bolts installation
Use care of the piping direction when the unit is installed.
Hanging bolt M10
Hole-in anchor
Hole-in plug
Insert
Concrete
360
1270
250
794
853853
1103
Down side
Up side
(2) If necessary, cut the opening installation and checking needed on the ceiling. (If has ceiling)
Before installation, finish the preparation work of all the pipes (refrigerant, drainage) and wire
(wire controller connection wire, indoor and outdoor unit connection wire) of indoor unit, so that
after installation, they can be immediately connected with outdoor unit.
Cut the opening on the ceiling. Maybe it needs to strengthen the ceiling to keep the ceiling even
and flat and prevent the ceiling from vibration. For details, please consult to the builder.
(Use M10 screw bolt)
In order to bear the weight of the unit, for existed
ceiling, using foundation screw bolt, for new ceiling,
using burying embedded screw bolt, burying screw
bolt or spot supplied other parts.
Before going on installation, adjust the gaps with ceiling.
5.2.
2.1 Preparation before installation
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Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
28
5.2.2
.2 Installation of indoor unit
Fix the indoor unit to the hanger bolts.
If required, it is possible to suspend the unit to the beam, etc.
Directly by use of the bolts without using the hanger bolts.
When the dimensions of main unit and ceiling holes does not match, it can be adjusted with the slot
holes of hanging bracket.
Note
Adjusting to the levelness
(a) Adjust the out-of levelness using a level or by
the following method.
Make adjustment so that the relation between
the lower surface of the unit proper and water
level in the hose becomes as given below.
(b) Unless the adjustment to the levelness is made properly, malfunctioning or failure of the float
switch may occur.
PVC hose
Piping side
Supply water
Water level
0~5 mm
(0~0.2")
Bring the piping side slightly lower.
Hanging bolt
M10 nut
Main unit
M10 washer
M10 spring washer
Drain hose
Stage
difference
part
Drain socket
Drain socket
Main unit
VP 25 joint
(field purchased)
Pipe cover(large)
[for insulation]
(accessory)
VP 25
(field purchased)
Pipe cover
[for insulation]
(field purchased)
Drain hose
(accessory)
Pipe cover(small)
[for insulation]
(accessory)
Clamp
(accessory)
Adhesion
For drain pipe, use hard PVC general purpose pipe
VP-25(I.D.1") which can be purchased locally. When
connecting, insert a PVC pipe end securely into the
drain socket before tightening securely using the
attached drain hose and clamp. Adhesive must not
be used connection of the drain socket and drain
hose (accessory).
(c)
5.2.2.3 Drain Piping
(a) Drain piping should always be in a downhill grade (1/50~1/100) and avoid riding across an
elevation or making traps.
When connecting the drain pipe to unit, pay suffcient attention not to apply excess force to the piping
on the unit side. Also, fix the piping at a point as close as possible to the unit.
Do not pipe under water
Keep free from traps
Avoid riding across an elevation
Air vent
Inproper piping
Good piping
1.5m ~ 2m
Suspension
bolts
Heat
insulation
A downhill grade
of 1/100 or more
(b)
Page 29
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
29
Drainage Test
Conduct a drainage test after completion of the electrical work.
During the trial, make sure that drain flows properly through the piping and that no water leaks
from connections.
In case of a new building, conduct the test before it is furnished with the ceiling.
Be sure to conduct this test even when the unit is installed in the heating season.
Procedures
Supply about 1000 cc of water to the unit through the air outlet using a feed water pump.
Check the drain while cooling operation.
(g)
1
2
3
4
1
2
VP 30
Secure the elevation as high as possible
(approx. 100 mm)
A downhill grade of
1/100 or more
When constructing drain piping for several units,
position the common pipe about 100 mm below
the drain outlet of each unit as shown in the sketch.
Use VP-30(11/4") or thicker pipe for this purpose.
(d)
(e)
The stiff PVC pipe put indoor side should be heat insulated.
(f)
Avoid putting the outlet of drain hose in the places with irritant gas generated. Do not insert the drain
hose directly into drainage, where the gas with sulfur may be generated.
Backwater bend
Because the drain spout is at the position, which negative pressure may occur. So with the rise of water
level in the drain pan, water leakage may occur. In order to prevent water leakage, we designed a
backwater bend.
The structure of backwater bend should be able to be cleaned. As the below figure shown, use T type joint.
The backwater bend is set near the air conditioner.
As figure shown, set a backwater bend in the middle of drain hose.
H1H2
H1=100mm or the static pressure of air sending motor
H2=1/2H1 (or between 50~100mm)
5.2.2.4 Installation of air suction and discharging duct
A
Insulation
muffler cavity (air sending)
Sacking joint
Air volume adjuster
Air outlet
Enlarging chart of
profile chart A
Vibration resistance hook
Checking meatus
Air conditioner
main unit
Ceiling
Air suction grille with air filter
Please consult the after-sales service worker of Haier Air Conditioner for the choosing and installation
of suction inlet, suction duct, discharging outlet and discharging duct. Calculating the design drawing
and outer static pressure, and choose the discharging duct with proper length and shape.
Page 30
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
30
The calculation of duct resistance (the simple calculation is as follow table)
Straight part
Bend part
Air out part
Static pressure box
Air inlet grille (with air filter)
Calculate as per 1m length 1Pa, 1Pa/m
Each bend takes as a3~4m long straight duct
Calculate as 25Pa
Calculate as 50Pa/each
Calculate as 40Pa/each
Good exampleBad exampleBad example
The length difference among every duct is limited below 2:1.
Reduce the length of duct as possible as can.
Reduce the amount of bend as possible as can.
Use heat insulation material to bind and seal the part connecting main unit and the flare part of air
discharging duct. Perform duct installation work, before the fitment of ceiling.
5.2.2.5 Calculation method of the dimension of the simple quadrate air duct
Presuming the unit length friction impedance of the duct is 1Pa/m, when the dimension of one side of
the air duct is fixed as 250mm, as shown below:
Note:1Pa/m=0.1mmAg/m
The chosen chart of simple duct
m3/h(m3/n)
100
200
300
400
500
600(10)
800
1,000
1,200(20)
250 x 60
(mmxmm)
250 x 90
250 x 120
250 x 140
250 x 170
250 x 190
250 x 230
250 x 270
250 x 310
Shape
Item
Air volume
Square duct
Dimension
m3/h(m3/n)
1,400
1,600
1,800(30)
2000
2400
3,000(50)
3,500
4,000
4,500
5,000
5,500
6,000(100)
(mmxmm)
250 x 350
250 x 390
250 x 430
250 x 470
250 x 560
250 x 650
250 x 740
250 x 830
250 x 920
250 x 1000
250 x 1090
250 x 1180
Shape
Item
Air volume
Square duct
Dimension
Static pressure box
Air conditioner
Equipped with
air filter (bought)
B
A
A
A
600m3/h
(10m3/min)
Duct
(mmxmm)
2400m3/h
(40m3/min)
250x560
250x190
Air volume
B
A
300m3/h
(5m3/min)
Duct
(mmxmm)
1200m3/h
(20m3/min)
250x310
250x120
Air volume
HDU-24H03/H
HDU-28H03/H
HDU-42H03/H
Page 31
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
31
5.2.2.6 The attentive matters in installation of air suction and discharging duct
Recommend to use anti-frost and sound-absorbing
duct. (locally bought)
The duct installation work should be finished
before the fitment of ceiling.
The duct must be heat insulated.
The specific air-discharging outlet should be installed at
the place where the airflow can be reasonably distributed.
The surface should leave a checking meatus for checking
and maintenance.
5.2.2.7 The examples of improper installation
Do not use air in duct and take the ceiling inner side instead. The result is because of the irregular
outer air mass, strong wind and sunshine, the humidity is increased.
There may be water drop on the outside of duct. For cement and other new constructions, even if
not taking ceiling inner side as duct, the humidity will also be so high. At this time, use glass fiber
to perform heat preservation to the whole. (use iron net to bind the glass fiber)
Maybe exceeding the unit operation limit (for example: when indoor dry bulb temperature is 35 C,
wet bulb temperature 24 C), it may lead to overload of compressor.
Affected by the capacity of air discharging fan, the strong wind in the outer duct and wind direction,
when unit air sending volume exceeds the limit, the discharged water of heat exchanger will overflow,
leading to water leakage.
Air
Air
Duct
Special air discharging outlet
Use screw bolt to fix
Air discharging fan
Improper example
Page 32
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
32
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Page 33
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
33
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Page 34
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
34
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Page 35
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
35
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Page 36
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
36
Indoor & outdoor unit connection
power cable length
Approx
1.5m
Approx
2m
pipe direction
Left
Rear
Right
Bottom
Over 10cm
Over 10cm
Over 10cm
Over 10cm
Over 10cm
Over 60cm
Over 15cm
Over 100cm
Page 37
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
37
6. Parts and Functions
6.1 HBU-18CF03
Page 38
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
38
6.2 HDU-42CF03/H
Page 39
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
39
6.3 HPU-42HF03
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Page 40
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
40
14.HIGH/SO Button
Used to select HIGH or SOFT operation.
21
22
31
29
32
FRESH
HIGH/SO
TIMER
SET
FILTER
B
A
M D
HEALTH
RESET
LOCK
SLEEP
FAN
TEMP
ON
OFF
SWING
MODE
CLOCK
CODE
LIGHT
OFF
A
U
T
O
1
2
3
4
6
7
9
10
11
15
13
5
8
16
17
30
34
35
33
23
24
25
26
27
28
20
12
14
7.Remote controller functions
1.TEMP Setting Button
(Used to set temperature. Setting ranges:
16 C to 30 C)
In Up/Down function, for controlling up and
down filter.
2.SWING Button
If you press this button once, auto swing will
be activated.
If you press this button again, the louver will
fix in the present position.
3.Power ON/OFF Button
Used for unit start and stop
After power on, the LCD of remote controller
will display the previous operation state (except
for
TIMER,SLEEP and SWING state).
4.Operation MODE
Used to select operation mode.
Every time you press MODE button, operation mode
changes according to following sequence:
5.HEALTH Button
Used to set health mode, if the unit has the negative ion function
and oxygen bar function.
AUTO
FAN
HEAT
COOL
DRY
6.CLOCK Button
Used to set correct time.
(Note: if time of TIMER ON is the same as TIMER
OFF ,TIMER ON/OFF cannot be set)
10.RESET Button
Press this button by using a sharp article to resume
the correct operation of the remote controller in case
of need, i.e. for example in case of malfunctions due
to electromagnetic noise.
17.SLEEP Button
(The clock must be corrected before setting sleep
function)
Used to set sleep mode.
13.Up and down Button
Used to set TIMER and CLOCK up or down.
8. FILTER Button
Used to set up/down function of filter.
NOTE: 1.Cooling only air conditioner does not have the displays and functions related to heating.
2.HIGH/SO button
This button is activated in Cooling/Heating mode, the fan speed is in AUTO mode after pressing it and "high
functon" will be cancelled automatically after 15 minutes running.
11.LOCK Button
Used to lock operation button and LCD display
contents: by pressing this button, other buttons comes
out of function and lock state display appears; if you press
it again, lock state will be no more active and lock state
display will disappear
.
7.CLOCK Button
Used to select TIMER ON, TIMER OFF.
9. CODE Button
Used to select code A or B, for this unit, the code is A.
18
12.LIGHT Button
Used to light the control panel (only for cabinet unit)
15.SET Button
Used to confirm TIMER and CLOCK settings.
16.FRESH Button
Used to set fresh mode, the unit will draw in fresh air.
19
36
7.1 Remote controller YR-H71
Page 41
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
Clock Set
Displays when healthy run function is set.
22.TEMPERATURE Display
34.LOCK State Display
33.BATTERY Energy Display
Notify the user when it is time to change
the batteries.
24.HIGH/SO Display
25.SIGNAL SENDING Display
26.FRESH AIR Display
27.ELECTRICAL HEATING Display
29.HEALTH Display
32.SLEEP State Display
31.Operation MODE Display
AUTO RUN
COOL RUN
DRY RUN HEAT RUN
FAN RUN
35.FAN SPEED Display
23.AUTO SWING Display
19.TIMER OFF Display
21.FILTER Display
36.TIMER ON Display
When unit is started for the first time and after replacing batteries in remote
controller, clock should be adjusted as follows:
1.Press CLOCK button, clock indication of " AM " or " PM " flashes.
2.Press or to set correct time. Each press will increase or decrease
1 min. If the button is kept pressed, time will increase or decrease quickly.
3.After time setting is confirmed, press "SET" : AM or PM stop flashing,
while clock starts working.
Note:AM means morning and PM means afternoon.
When operating the remote controller in an area where
electronically controlled lights are installed or wireless handsets
are used, please move closer to the indoor unit as the function
of the remote controller might be affected by signals emitted
by the above mentioned equipments.
Battery loading
Confirmation indicator
If no indication is displayed after press ON/OFF button,
reload the batteries.
AUTO
LO
MID
HI
AUTO
Remote Controller' Operation
When in use, direct signal transmission
head to the receiver placed on the indoor
unit
The distance between the remote controller and the receiver
should be max 7m and there should be no obstacle between them.
Do not throw the remote controller; prevent it from being
damaged.
18.FAN Button
Used to select fan speed:LOW,MID,HIGH,AUTO.
Note:
It is recommended that the batteries be removed from the
compartment if the remote controller is not used for an extended
period.
The remote controller is programmed for automatic test of
operation mode after the batteries are replaced. When the test
is conducted, all icons will appear on the screen and then
disappear if the batteries are properly fitted.
Caution:
If the remote controller does not operate as designed after
fitting new batteries of the same
type, press the Reset button (marked ) with a pointed article.
20.CLOCK Display
30.DEHUMIDIFICATION Display
28.Some other buttons
All these functions are not available now.
FRESH
HIGH/SO
TIMER
SET
FILTER
HEALTH
RESET
LOCK
SLEEPMODE
CLOCK
CODE
LIGHT
3
2
1
Battery loading
Batteries are fitted as follows:
Loading the battery
Ensure that batteries are correctly placed in the compartment
as required for positive and negative terminals.
Replacing the battery compartment lid
The battery compartment lid is reinstalled in the reverse
sequence.
Display review
Press the button to see if batteries are properly fitted. If
no display appears, refit the batteries.
Remove the battery compartment lid
Slightly press and disengage the battery compartment lid marked
with ì
î and then hold the remote controller by the upper
section and then remove the battery compartment lid by pressing
in the direction of the arrow as shown in the figure above.
* *
* *
Page 42
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
42
Fan Operation
1.Unit start
Press ON/OFF button to start your air conditioner.
Previous operation status appears on LCD (except for
TIMER, SLEEP, and SWING setting).
2.Select operating mode
Press MODE button. At each press, operation mode
changes as follows:
3. Adjust fan speed
Press FAN button. At each press, fan speed changes as
follows:
Air conditioner will run at the selected fan speed.
When in AUTO mode, unit will adjust fan speed
according to room temperature automatically.
4. Unit stop
Press ON/OFF button to stop unit.
Then select FAN
About FAN mode
When the air conditioner runs in F AN mode,
it is not possible to select AUTO FAN or to
set temperature.
AUTO
FANHEATCOOL DRY
A
FRESH
HIGH/SO
TIMER
SET
FILTER
HEALTH
RESET
LOCK
SLEEP
FAN
TEMP
ON
OFF
SWING
MODE
CLOCK
CODE
LIGHT
A
U
T
O
4
1
3
2
LOW
MID
HIGH
Page 43
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
AUTO, COOL , HEAT and DRY Operation
1. Unit start
Press ON/OFF button,unit starts.
Previous operation status appears on LCD (except for TIMER,
SLEEP and SWING setting)
3.T emperature setting
Then select AUTO run or select COOL operation or
select DRY operation or select HEAT operation
2.Select operation mode
Press MODE button. At each press, operation mode changes
as follows:
Press TEMP button.
Every time the button is pressed, temp. setting increases
1 C; if the button is kept pressed, temp. setting will increase
quickly.
Every time the button is pressed, temp. setting decreases
1 C, if the button is kept pressed, temp. setting will decrease
quickly.
Set proper temperature
4.Adjust FAN button
Press F AN button. At each press, fan speed changes as follows:
Air conditioner will run at the selected fan speed.
5. Unit stop
Press ON/OFF button,unit stops.
In ATUO mode, the temperature setting is not displayed on LCD. In this mode, during running air conditioner
will select COOL, HEAT or FAN mode automatically according to the room temperature.
In DRY mode, when room temperature becomes 2 C higher than temperature setting, unit will run intermittently
at LOW speed regardless of F AN setting. When room temperature is lower than temperature setting, unit will
only run F AN operation.
In HEAT mode,warm air will blow out after a short period of time due to cold-draft prevention function.
AUTO
FANHEATCOOL DRY
AUTO
LOW
MID HIGH
FRESH
HIGH/SO
TIMER
SET
FILTER
A
HEALTH
RESET
LOCK
SLEEP
FAN
TEMP
ON
OFF
SWING
MODE
CLOCK
CODE
LIGHT
A
U
T
O
Temp. setting +2 C
Temp.setting
On reaching temp.setting
+2 C, unit will run in mild
DRY mode.
Ultra-low air flow
COOL operation starts
when room temp.is
higher than temp.
setting.
3
5
1
3
4
2
A
U
T
O
Page 44
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
44
Press SWING button.
Up and down airflow varies upwards
and downwards. Left and right airflow
varies left and right sides.
Always use SWING button on the remote
controller to adjust flaps. Adjusting them by hand
may result in air conditioner's abnormally running.
Displays on the LCD disappear.
All indicators on the indoor unit go out.
Swing louver automatically close the air outlet.
After unit stops:
AUTO SWING
Adjusting air flow direction
AUTO SWING
When the automatic swing louver moves to the proper
angle, press SWING button can fix the airflow direction.
Please carefully set temperature when children,
old or infirm people ues the air conditioner.
In case of great humidity, If the vertical flaps
are completely turned towards left or right, the
louver will drop water.
Never adjust the louver directly by hand, as this
could make it work abnormally .If the louver work
abnormally , stop unit, restart and adjust the louver
by remote controller.
Hints:
As in COOL mode air flows downwards, adjusting airflow horizontally will be much more helpful
for a better air circulation
As in HEAT mode air flows upwards, adjusting airflow downward will be much more helpful for
a better air circulation.
Be careful not to catch a cold when cold air blows downward directly.
In COOL or DRY mode, do not leave the louver in
downward position for a long time, as the water
vapor close to the grille may condense and water
may drop from the air conditioner.
FRESH
HIGH/SO
TIMER
SET
FILTER
A
HEALTH
RESET
LOCK
SLEEP
FAN
TEMP
ON
OFF
SWING
MODE
CLOCK
CODE
LIGHT
A
U
T
O
Page 45
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
45
Sleep Function
Before going to bed you can press down the SLEEP button and the air conditioner will run so as to make
you sleep more comfortably.
Before using this function, the clock must be set.
Use of SLEEP function
After the unit's start, set running mode and then press SLEEP button once to make the air conditioner
have the previous-set sleep time (first power-on is "1h"). The sleep symbol will appear. Press time button
/ : you can choose the time in 1~8 hours. Each time the button is pressed, the time increases/decreases 1
hour: "xh" and "OFF" indications appear on the display.
Operation Mode
1.In COOL, DRY mode
One hour after sleeping operation start, the temperature
is 1 C higher than the setting one. After another hour,
temperature rises 1 C: sleep run continuously for another
6 hours and then stops. The actual temperature is higher
than the setting one which is to prevent from being too
cold to your sleep.
2.In HEAT mode
One hour after sleeping operation start, the temperature
is 2 C lower than the setting one. After another hour,
temperature decreases by 2 C more. Temperature will
automatically rise by 1 C after another 3 hours'
continuous operation. The actual temperature is lower
than the setting one which is to prevent from being too
hot to your sleep.
3.In AUTO mode.
The air conditioner will run in corresponding sleep
operation according to the automatically selected
operation mode.
SLEEP RUN BEGINS
SLEEP RUN STOPS
SETTING T
SHUT DOWN
about 6 hrs
1 hrs
In COOL,DRY mode
increase 1 C
increase 1 C
SLEEP RUN BEGINS
SLEEP RUN STOPS
SETTING T
SHUT DOWN
1 hrs
1 hrs
3 hrs
about 6 hrs
increase 1 C
decrease 2 C
decrease 2 C
Notes:
After setting SLEEP function, it is not possible to set clock.
If set-sleep time does not reach 8 hours, unit will automatically stop operation
after set time is reached.
Set " TIMER ON " or " TIMER OFF "In COOL,DRY mode function first,
then set SLEEP. After set SLEEP function, the TIMER function cannot be
set.
In HEAT mode
FRESH
HIGH/SO
TIMER
SET
FILTER
A
HEALTH
RESET
LOCK
SLEEP
FAN
TEMP
ON
OFF
SWING
MODE
CLOCK
CODE
LIGHT
OFF
A
U
T
O
Page 46
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
46
Every time the button is pressed, time increases 10 minuts.
If the button is kept pressed, time changes quickly.
Timer ON/OFF Function
Set clock correctly before starting TIMER operation
1.Unit start
After unit start, select your desired operation mode (operation
mode will be displayed on LCD)
2.TIMER mode selection
Press TIMER button on the remote controller to change TIMER
mode. Every time the button is pressed, display of TIMER mode
changes as follows:
ON OFF ON OFF
AM
12:00
AM
12:00
PM
12:00
PM
12:00
TIMER ON
TIMER OFF
TIMER ON-OFF
blank
Then select TIMER mode as needed (TIMER ON or TIMER OFF).
Now or will flash.
3.TIMER setting (press time adjust buttons )
Every time the button is pressed, time decreases 10 minuts.
If the button is kept pressed, time changes quickly.
It can be adjusted within 24 hours at will.
4.Confirm setting
After setting correct time, press SET button to confirm time. Now
Time displayed: unit starts or stops at X hour X min (TIMER ON
or TIMER OFF)
5.Cancel TIMER mode
Just press TIMER button several times until TIMER mode disappears.
Hints:
After replacing batteries or if a power failure occurs, TIMER setting
must be reset.
Remote controller has memory function. When you use TIMER
mode next time, just press SET button after mode selection if timer
setting is the same as the previous one.
Note:
After setting TIMER function, the remote controller displays TIMER time. If you want to see clock time,
just press CLOCK button once: clock time will be displayed (if you press the button again continuously,you
can adjust clock). 5 seconds later, the display will show TIMER time again.
ON
OFF
ON
OFF
or stop flashing.
FRESH
HIGH/SO
TIMER
SET
FILTER
A
HEALTH
RESET
LOCK
SLEEP
FAN
TEMP
ON
OFF
SWING
MODE
CLOCK
CODE
LIGHT
1
2
3
4
Page 47
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
47
Timer ON-OFF Function
Set clock correctly before starting TIMER operation
1.Unit start
After unit start, select your desired operation mode (operation
mode will be displayed on LCD)
2.TIMER mode selection
Press TIMER button on the remote controller to change TIMER
mode. Every time the button is pressed, display of TIMER mode
changes as follows:
OFF
3.Time setting for TIMER ON
4.Timer confirming for TIMER ON
After setting correct time, press TIMER button to confirm time. Now
5.Timer setting for TIMER OFF
Press time buttons and follow the same procedures in " Time setting
for TIMER ON"
Press time button
ON
stops to flash, while
starts flashing.
Time displayed : unit starts at X hour X min.
6.Time confirming for TIMER OFF
After time setting, press SET button to confirm time.
stops to flash.
Time displayed: unit starts at X hour X min.
7.Canel TIMER mode
Just press TIMER button several times until TIMER mode disappears.
According to the time setting sequence of TIMER ON and TIMER OFF,
either start-stops or stops-start can be realized.
If the time setting of TIMER ON is the same as TIMER OFF, TIMER
ON-OFF function cannot be set.
ON
Then select TIMER ON-OFF mode.
will flash.
Every time the button is pressed, time increases 10 minuts.
If the button is kept pressed, time will changes quickly.
Every time the button is pressed, time decreases 10 minuts.
If the button is kept pressed ,time will changes quickly.
It can be adjusted within 24 hours at will.
AM refers to morning and PM refers to afternoon.
OFF
FRESH
HIGH/SO
TIMER
SET
FILTER
A
HEALTH
RESET
LOCK
SLEEP
FAN
TEMP
ON
OFF
SWING
MODE
CLOCK
CODE
LIGHT
OFF
1
3
6
5
4
2
ON
OFF
ON
OFF
AM
12:00
AM
12:00
PM
12:00
PM
12:00
TIMER ON
TIMER OFF
TIMER ON-OFF
blank
Page 48
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
48
After the air conditioner has operated for a certain period, dust has
accumulated on the filter, and the filter up/down function can be used
to clean it.
1.Whether unit starts or stops, continuously press FILTER
button for 3 seconds, and enter the filter up/down waiting
status (when unit stops, the yellow TIMER indicator flashes,
and filter and clock indication are displayed on the remote
controller. Only the FILTER button, the temperature buttons
" " " " and time buttons are active).
2.Press temperature button or time button in filter
up/down waiting status: the up/down mechanism makes
the filter moving downward and does not stop until it has
reached the maximum limit.
3.Press temperature button or time button in filter
up/down waiting status: the up/down mechanism makes
the filter to moving upward till near the surface board and
then automatically adjusts it to reset (when adjusting to reset,
it will not be controlled by the remote controller till the adju stment is finished).
4.During moving downward, press temperature button
or time button: moving stops.
5.During moving downward, press temperature button
or time button: moving stops.
6.Continuously press FILTER button 3 seconds again to
cancel the filter up/down waiting mode (unit stops, the
yellow timer indicator stops flashing, the filter goes back to
the original position, the remote controller goes back to off
status and only clock is displayed).
Note:
If the filter does not thoroughly go back to the original position, only needs to
operate several times repeatedly.
Filter Up/Down
" "
" "
" "
" "
" "
" "
" "
" "
(Optional)
FRESH
HIGH/SO
TIMER
SET
FILTER
A
HEALTH
RESET
LOCK
SLEEP
FAN
TEMP
ON
OFF
SWING
MODE
CLOCK
CODE
LIGHT
1
Page 49
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
49
Press the HIGH/SO button twice
NOTICE:
When the air conditioner is operating in " High Mode " , unevenness of room air temperature
may occur due to the intensive operation in a short time.
Anyway, operation in "High Mode", does not last for more than 15 minutes, then regular
operation is automatically restored.
" High mode " Operation
If the button is pressed once, the indication is displayed
on the remote controller. If you press the button once again,
the indication disappears, regular operation is restored and fan
speed goes back to the mode set before "High Mode" operation.
Press the HIGH/SO button noce
The indication appears on the display of the remote
controller and operation in "High Mode" starts.
The AUT O fan speed is automatically set and the corresponding
indication is also displayed.
Outline of operation in "High Mode"
This function is suitable when the set temperature must be
reached in the shortest delay.
The button "HIGH/SO", referred to this function, is effective
in Cooling/Heating mode (not in Auto/Dry/Fan modes).
ON
OFF
FRESH
HIGH/SO
TIMER
SET
FILTER
A
HEALTH
RESET
LOCK
SLEEP
FAN
TEMP
ON
OFF
SWING
MODE
CLOCK
CODE
LIGHT
A
U
T
O
1
Page 50
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
50
Press the HIGH/SO button twice
NOTICE:
When the air conditioner is operating in " High Mode " , unevenness of room air temperature
may occur due to the intensive operation in a short time.
Anyway, operation in "High Mode", does not last for more than 15 minutes, then regular
operation is automatically restored.
" Soft mode " Operation
If the button is pressed once, the indication is disappears
from the remote controller's display. If you press the button
once again, regular operation is restored and fan speed goes
back to the mode set before "Soft Mode" operation.
Press the HIGH/SO button twice
The indication appears on the display of the remote
controller and operation in "Soft Mode" starts.
The AUT O fan speed is automatically set and the corresponding
indication is also displayed.
Outline of operation in "Soft Mode"
Operation in "Soft Mode", more silent, is suitable when noises
should be reduced, e.g.. for reading or sleeping.
The button "HIGH/SO", referred to this operation, is effective
in Cooling/Heating mode (not in Auto/Dry/Fan modes).
ON
OFF
FRESH
HIGH/SO
TIMER
SET
FILTER
A
HEALTH
RESET
LOCK
SLEEP
FAN
TEMP
ON
OFF
SWING
MODE
CLOCK
CODE
LIGHT
OFF
A
U
T
O
1
Page 51
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
51
Auto restart function setting
Setting method (to be applied for a necessary situation)
:
Setting Method: When the remote controller is on (excluding timer mode and fan mode),
press the "Sleeping" button on the remote controller 10 times within 5
seconds, and after the buzzer rings 4 times, the air conditioner will enter
the state of power failure compensation.
Cancel Method: Press the "Sleeping" button on the remote controller 10 times within 5
seconds, and after the buzzer rings 2 timer, the power failure compensation
mode will be cancelled.
Notes: When a power failure suddenly occurs during the air conditioner is working after the power
failure compensation is set, if the air conditioner will not be used for a long time, please cut off the
power supply to prevent its operation from being resumed after the power is supplied again, or press
the "Switch On/Off" button after the power comes again.
After the power failure compensation is set, if power failure suddenly occurs while the air conditioner
is working, it will resume the previous working state when the power is supplied again.
FRESH
HIGH/SO
TIMER
SET
FILTER
A
HEALTH
RESET
LOCK
SLEEP
FAN
TEMP
ON
OFF
SWING
MODE
CLOCK
CODE
LIGHT
A
U
T
O
Page 52
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Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
52
7.2 Wired controller
Page 53
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HDU-42CF03/H HPU-42HF03
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HDU-42CF03/H HPU-42HF03
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HDU-42CF03/H HPU-42HF03
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HDU-42CF03/H HPU-42HF03
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Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
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Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
59
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Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
60
Page 61
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
61
8. Refrigerant Diagram
HBU-18CF03
NOTE£”
FOR SOME COOLING
ONLY TYPES,THERE ARE
NO DASHED LINES AND
PART IN DASHED
FRAME
2.
1.
Page 62
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
HDU-42CF03/H
NOTE£”
FOR SOME COOLING
1.
ONLY TYPES,THERE ARE
NO DASHED LINES AND
PART IN DASHED
FRAME
2.
62
Page 63
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
HPU-42HF03
NOTE£”
FOR SOME COOLING
1.
ONLY TYPES,THERE ARE
NO DASHED LINES AND
PART IN DASHED
FRAME
2.
63
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Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
64
9. Electrical Control Functions
9.1 Control Features
The brief introduction includes those for each item of various types of air conditioners and
their electric control functions.
The brief introduction includes those for each item of various types of air conditioners and
their electric control functions.
7.1 Brief introduction of electric control 7.1 Brief introduction of electric control
(1) Automatic run (1) Automatic run
a. Cooling-heating type
After the machine being started and running mod
e changes to AUTO, the system will
decide running mode according to difference between the present room temperature and
setting temperature, then runs as the decided mode. In the following selections, Tr means
room temperature and Ts means setting temperature.
Select running mode according to the following conditions at th
e first time to enter Auto
mode:
TrTs-3 to select cooling mode (with setting temperature being Ts +3)
Tr<Ts-3 to select heating mode (with setting temperature being Ts)
After the system entering auto run mode, the running mode can convert automatically
according to variation of room temperature between cooling, blowing and heating in the way
shown as the chart below:
R
o
o
m
t
e
m
p
e
r
a
t
u
r
e
f
a
n
g
l
l
i
Cooling
Ts+3
Cooling
Room
temperature
rising
Blowing
Ts-3
Ts-3
Heating
b. Single Cooling Type
Select running mode according to the following conditions at th
e first time to enter Auto
mode:
Tr
Ts + 3 to select cooling mode
Tr < Ts + 3
to select blowing mode
After the system entering auto run, the running mode can convert automatically
according to variation of room temperature between cooling and blowing functions in the way
shown as the chart below:
R
o
o
m
t
e
m
p
e
r
a
t
u
r
e
a
l
l
f
i
n
g
Cooling
Ts+3
Room
temperature
rising
Blowing
Cooling
Blowing
Ts-3
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Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
65
(2) Auto Selection of Wind Speed
In the following, Tr means room temperature while Ts means setting temperature.
a. During cooling program
conversion of wind speed from the low to high won’t work until
the present speed has continued for 3 minutes while conversion from the high to low needs
no time delay. The chart below is the sketch map of conversion:
Ts
2
Ts 1
Medium speed
Medium speed
Temperature
falling
Temperature
rising
Low speed
High speed
Low peed
High speed
Ts 3
Ts
b. During heating program
applicable for cooling-heating type , conversion of wind speed
from the low to high won’t work until the present speed has continued for 3 minutes while
conversion from the high to low needs no time delay. The hart below is the sketch map of
conversion:
Low speed
Ts
1
Ts 2
Medium speed
Medium speed
Temperature
rising
High speed
High speed
Temperature
falling
Ts
Low speed
Ts 3
(3) Dehumidifying program
In the following, Tr means room temperature while T
s means setting temperature.
a. After the system entering dehumidifying program,
the compressor, outdoor and indoor
blowing fans run according to the following rules:
(1) Tr > Ts + 2
, the compressor and outdoor blowing fan run continuously while indoor
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Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
66
blowing fan runs at setting wind speed. This working area is defined as area A.
(2) Ts
Tr Ts + 2 , the compressor and outdoor blowing fan run for 10 minutes then
pause for 6 minutes, while indoor blowing fan runs at low wind speed. This working
area is defined as area B.
(3) Tr < Ts, the compressor and outdoor blowing fan stop working while outdoor blowing
fan runs at low wind speed. This working area is def
ined as area C.
a. After dehumidifying program starting, the system converts between A, B and C areas
according to variations of room temperature with running mode being shown as the chart
below:
Room
temperature
falling
Area B
Area B
Area C
Ts
Area A
Area A
Ts 3
Ts 1
Room
temperature
rising
Ts 1
Area C
(4) Cutoff protection against overload and overheat
During heating program, if the indoor blowing fan
has been started and the compressor
has been running more than 2 minutes, and the temperature of indoor coil pipe (Ticp)
> 64
, the outdoor blowing fan will stops running; If Ticp ≤ 50 and the outdoor
blowing fan has kept stop state for 45 seconds, then it will restore rotation; If Ticp > 67
and such temperature has last for 10 seconds, the compressor will stop running and
indoor blowing fan run according to conditions as it reaches setting temperature. When
Ticp < 58
, and the compressor has kept stop state over 3 minutes, then the
compressor and outdoor blowing fan will restore normal running.
Cutoff protection for heating current
After 60 seconds from the compressor being started, if CT current exceeds I1 (9.2A) and
such case has kept 5 seconds, the outdoor blowing fan will stop. If 45 seconds has passed
after the outdoor blowing stops and the current of the compressor is less than I2 (7.5A), the
blowing fan will restore running. If CT current exceeds I3 (14.3A) and such case lasts for 3
seconds, the compressor and outdoor blowing fan will stop. The compressor will not restore
running until 3 minutes passes with CT current less than 12A.
(5) Cool wind prevention during heating program
At the first time entering heating program or after
ending the latest frost removal, if the
temperature of indoor coil pipe (Ticp) < 28
, the indoor blowing fan will stop running; If
28
Ticp < 38 , the indoor blowing fan will run at low speed; If Ticp > 38 or the
compressor has been running for more than 4 minutes, the indoor blowing fan will run at
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Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
67
setting wind speed.
(6) Afterheat blowing during heating program
During heating program, the compressor will stop running (except overheat protection or
frost removal) while the indoor blowing fan will firstly run for 50 seconds at low speed then
stop.
(7) Frost removal control (applicable for cooling-heating type)
Starting conditions for frost removal:
A The indoor unit is in overload protection and outdoor blowing fan stops. The outdoor
blowing fan does not enter overheat mode in 10 minutes after it is restarted, the
compressor has run over 45 minutes totally while 20 minutes continuously, and the
temperature of indoor coil pipe is lower than 43 ;
B After the compressor continuously running for 20 minutes, the temperature of indoor
coil pipe falls 1 every 6 minutes and such case continuously appears three times,
and the temperature of indoor coil pipe is less than 40 , and 5 minutes have passed
after the compressor is restarted;
C The compressor has run totally over 3 hours while 20 minutes continuously, and the
temperature of indoor coil pipe is less than 40 ;
D The difference between room temperature and the one of indoor coil pipe is less than
16 and the compressor has totally run over 45 minutes while 20 minutes
continuously;
Frost removal will start if any one of the above conditions is satisfied.
Ending conditions for frost removal:
1 Time of frost removal has exceeded 9 minutes;
2 CT current exceeds I4(8.2A)
Actions of each load after the frost removal starts:
The compressor and outdoor blowing fan stop, and indoor blowing fan also stops.
55 seconds later the reversal valve is closed and next 5 seconds later the compressor is
started.
Actions of each load after the frost removal ends:
The compressor stops running while outdoor blowing fan immediately runs at high
speed, 55 seconds later the reversal valve is opened and next 5 seconds later the
compressor restores running and indoor blowing fan runs as conditions for cool wind
prevention.
(8) Freeze protection
After the compressor has run for 9 minutes,
the system will check temperature of
indoor coil pipe (Ticp). If Ticp is less than -1
, the compressor and outdoor blowing
fan will stop. They will run again after the compressor stops if both the following
conditions are satisfied:
1) 3 minutes have passed since compressor stops.
2) Ticp exceeds 7
.
(9) 3 minutes protection for compressor
After compressor stops, it cannot be started until 3 minutes late
r. During the machine’s
running, if time after loosing power not exceeds 3 minutes, the compressor cannot be
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Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
68
restarted until 3 minutes later after it is reenergized.
10 Power breakdown memory
If the machine suddenly loses power while running, or stops for maintenance or trouble
shooting, it will restart running as the status when it stops after the power is restored.
Note: 1.
Function setting: Continuously press sleep button on the remote controller 10
times in 5 seconds and buzzer on control panel shall beep 4 times.
2. Memory content: Running mode, wind speed s
etting, temperature setting,
swing status.
3. Cancel: Press sleep button on the remote controller 10 time
s and buzzer on
control panel beeps 2 times.
(11) Control of water pump
a. In cooling (including automatic cooling mode) and dehumidifying modes, the water
pump works if the compressor runs while stops 5 minutes later after the compressor
stops.
b. When water tank is fully filled, the float switch will be off. The water pump will start
to work after a controller has detected this signal and it will continue working for 5
minutes after the float restores to normal state.
c. If the full water signal is detected continuously over 5 minutes, the water pump
indicator lamp will flash to alarm and compressor stops running. The water pump
will run 5 minutes, then pause for 5 seconds before next 5 minutes’ running, ... until
the float restores to normal state, after which the pump will run for 5 minutes then
stop.
(12) Monitoring of remote network
Through preset interface, the air conditioner is connected to remote control detecto
r
(made by Haier) with 2-core cables for wire communication, to execute instructions sent
from computer or centralized controller via remote control detector and meanwhile send
present running status and trouble information of the machine to remote control detector.
Connection between air conditioner and remote control detector:
CN11
PC board
1
2
AA+
Interface for remote
control detector
(13) Trial run
Under shut-down state, hold pressing mandatory button. The buzzer will beep once,
then twice after 5 seconds. Release the button to enter mandatory cooling mode, under
which the indoor blowing fan runs at high speed with both the compressor and outdoor
blowing fan working. Press the mandatory button again can end the mandatory mode.
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Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
69
Return
Return
9.2 Defrost operation flow chart
Return
Condition
for
compress
or
OFF
OFF
compressor
Open outdoor fun
Compressor
off or 55s?
4-way value
ON
Compressor
ON ?
Clear the sign of
defrosts
Return
Operation indoor
fun motor
Return
Come to defrost
Compressor
ON
E-Heat off for 30s?
Turn off compressor
outdoor fun
Turn off
4-way value
Compressor
ON
Return
Return
Turn off for
55s?
B
Page 70
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
70
10. Diagnostic information (troubleshooting)
10.1 System failure
If the refrigerant in the system cannot flow fluently or the airflow circles more slowly, please check due
to the following procedures.
Cooling:
solenoid v alve failure
if the cooling load too large
if set temp. is prope r
compressor failure
refrigerant flow
malfunction
bad cooling
lack of refrigerant
4-way valve failure
check the evaluation of
cooling load
change 4-way valve
recharge refrigerant
change the solenoid valve
change the set temp.
change compressor
bad ventilation
if fan is set as low speed set the fan as med speed
if air inlet filter is blocked clean the filter
if the refrigerant pipe between
I.D and O.D is insulated
insulate the thick pipe
and slim pipe separately
Figure 1
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Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
71
10.2 Failure code
The remote receiver, wired controller and indoor PCB indicator all can indicate the failure code.
10.2.1 Failure code list
Power lamp flash
times/LED on PCB
flash times
failure description reasons treatment
1 Indoor ambient temp.
sensor failure
sensor broken down or short
circuit for more than 2m
continuously
due to the
signal,resumable
2 Indoor pipe temp.
sensor failure
sensor broken down or short
circuit for more than 2m
continuously
due to the
signal,resumable
4 Outdoor pipe temp.
sensor failure
sensor broken down or short
circuit for more than 2m
continuously
due to the
signal,resumable
8 Communication failure
between panel and
indoor unit
communication abnormal for
more than 4m continuously
due to the
signal,resumable
16 Low pressure
malfunction
low pressure switch acts for
30m
Need to be checked,
reset
10.2.2 Sensor malfunction
If indoor ambient temp. sensor and indoor pipe temp. sensor are valid, there is no outdoor sensor, in
the following conditions, the unit will confirm the sensor is failure:
Mainboard checks that the sensor is in open circuit, short circuit or close to short circuit continuously
for 2 minutes, the mainboard will confirm that sensor is failure, the system will stop running, alarm
occurs; If the signal is resumed, the system will resume automatically.
If indoor ambient temp. sensor and indoor pipe temp. sensor is valid, also there is outdoor sensor, in
the following conditions, the unit will confirm the sensor is failure:
Mainboard checks that the outdoor pipe temp. sensor is in open circuit, short circuit or close to short
circuit continuously for 2 minutes, the mainboard will confirm that sensor is failure, the system will
stop running, alarm occurs; If the signal is resumed, the system will resume automatically.
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Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
72
Diagnose and troubleshooting:
1) Sensor failure
no
no
no
yes
yes
yes
yes
Replace PCB
Is DC voltage between
both ends of sensor
near 5V or 0V?
Replace sensor
Is sensor resistance
acceptable?
Replace sensor
Is sensor short-circuit
or open-circuit?
check if the wiring is
correct according to
wiring diagram
no
reconnect
Relocate
if sensor is fixed
well
2) Communication failure between operation panel and indoor unit
start
if the wired controller
and indoor PCB are
com patible
if te rminals A,B,C,D on
wired controller are
corresponding with
terminals of indoor PCB
if te rminals A,B,C,D of
wired controller are in
open circuit or
connected well
if te rminals A,B(o r
C,D)of wired controller
are short circuit
change wired
controller
wire correctly
w ire c o rre c tly
wire correctly
yes
yes
yes
yes
no
no
no
Page 73
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
73
3) Low pressure abnormal
If there is other failure, please check if the dip switch is correct.
.
Page 74
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
74
11. Electric data
11.1 Wiring diagram
HBU-18CF03
WIRING DIAGRAM OF INDOOR UNIT
Y/G
Y/G
2. CENTRAL CONTROL
FUNCTION IS OPTINAL
CN20
1
OUTDOOR DEFROST
TEMPREATURE SENSOR
SWING MOTOR
M
CN6 CN10
INDOOR AMBIENT
W:WHITE B:BLACK BR:BROWN
BL:BLUE R:RED Y:YELLOW
OR:ORANGE
Y/G:YELLOW/GREEN
TEMPERATURE
SENSOR
INDOOR PIPE
TEMPERATURE
SENSOR
CN9
CN21
CN22
CN4
CN3 CN2 CN1
CN5
M
CN18
FUSE
T3.15A/250VAC
L N
CN12 CN14 CN15 CN11 CN17 CN13
CN16
M
4321
TRANSFORMER
CENTRAL
CONTROLLER
FLOAT
RECEIVER
0010576948
INDOOR
FAN MOTOR
CAPACITOR
WATER PUMP
MOTOR
W
B
BL
BR
BL
BR
CN19
POWER SUPPLY
TO OUTDOOR UNIT
Y
Y
OR
OR
ON
1243ON1243
ON
1243
ON
1
2
NOTE
1. FOR SOME COOLING
ONLY TYPES,THERE ARE
NO DASHED LINES AND
PART IN DASHED
FRAME
1
TO INDOOR UNIT
TO INDOOR UNIT
TO INDOOR UNIT
TERMINAL BLOCK
Y/G
Y/G
COMPRESSOR
NOTE£”
1¡¢FOR COOLING ONLY TYPE,THERE ARE NO DASHE FRAME AND
DASHED LINES MARKED
@;THE LINE MARKED @@ IS
CONNECTED TO 1(L) ON TERMINAL BLOCK.
2¡¢THE LINE MARKED @@ IS BLACK OR BROWN FOR SOME
TYPES.
3¡¢PART IN DASHED FRAME IS NOT AVAILABE FOR SOME
TYPES,CORRELATIVE LINES ARE CONNECTED TO 2(N) ON
TERMINAL BLOCK. DASHED PART IS OPTIONAL.
FAN
MOTOR
B
W
W
W
1(L)
W
W
BR
BR
BL
@
@
@
@
@
@@
BL
B
B
R
S
M
M
C
R
R
42(N) 3
B
3
B: BLACK
R: RED
BR:BROWN
BL:BLUE
W: WHITE
Y/G:YELLOW/GREEN
CAPACITOR
4-WAY
VALVE
CAPACITOR
OXYGEN PUMP
OUTDOOR
DEFROST
TEMPREATURE SENSOR
WIRING DIAGRAM OF OUTDOOR UNIT
0010576949
M
Page 75
WIRED
CONTROLLER
FLOAT
SWITCH
PIPE TEMP.
0010576945
SENSOR
OUTDOOR LOW PRESSURE
SWITCH CONTROL
1
CN2
DETECTOR
2
2
1
CN24
BM
CN10
CN7
CN9
FUSE
T3.15A/250VAC
CN1
CN11CN12
CN3
CN8
TRANSFORMER
NOTE: FOR THE COOLING CAPACITY
42000BTU/h ,THE FUSE ON PC
BOARD IS T6.3A/250VAC .
W
BBR
Y/G
123
TO OUTDOOR UNIT
CIRCUIT DIAGRAM OF INDOOR UNIT
1¡¢
2¡¢
3¡¢
PLEASE DO NOT CHANGE THE DIP SWITCH BM ON PC BOARD
PART IS NEEDED TO BE CONNECTED WITH OUTDOOR UNIT
DASHED PART IS OPTIONAL.
B:BLACK
R:RED
BL:BLUE
W:WHITE
Y/G:YELLOW/GREEN
TEMP.:TEMPERATURE
COM
NO
NC
COM
8
B
B
W
BL
BL
W
RELAY RELAY
6
4
2
5
3
1
Y/G
CAPACITOR
FAN MOTOR
M
7
8
6
4
2
5
3
1
7
NO
NC
POWERSUPPLY
NOTES:PARTSINDASHEDFRAMESARENOT
AVAILABLEFORSOMETYPES
CIRCUITDIAGRAMOFOUTDOORUNITCIRCUITDIAGRAMOFOUTDOORUNIT
R
T
S
R
W
BL
R
R
3-PHASEDETECTOR
COM
N.O
N.C
W
W
0010576533
B:BLACKBL:BLUE
R:REDW:WHITE
Y/G:YELLOW/GREEN
FANMOTOR
CAPACITOR
TOINDOORUNIT
LOW
PRESSURE
SWITCH
COMPRESSOR
VENTPROTECTOR
CAPACITOR
W
R
R
TOINDOORUNIT
3
NT
S
2
1
B
B
B
Y/G
Y/G
Y/G
Y/G
S
MAGNETIC
CONTACTOR
R
BL
B
COMPRESSOR
T
M
Y/G
FANMOTOR
M
M
W
BL
R
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
75
HDU-42CF03/H
Page 76
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
76
HPU-42HF03
BM4 BM3
BM1
BM2
NOTE£”
FOR SOME COOLING
ONLY TYPES,THERE ARE
NO DASHED LINES AND
PART IN DASHED
FRAME
2.
1.
WIRING DIAGRAM OF INDOOR UNIT
Y/G
Y/G
CENTRAL CONTROL
FUNCTION IS OPTINAL
CN20
1
OUTDOOR DEFROST
TEMPREATURE SENSOR
SWING MOTOR
M
CN6 CN10
INDOOR AMBIENT
W:WHITE B:BLACK BR:BROWN
BL:BLUE R:RED Y:YELLOW
OR:ORANGE
Y/G:YELLOW/GREEN
TEMPERATURE
SENSOR
INDOOR PIPE
TEMPERATURE
SENSOR
CN9 CN21 CN22 CN4 CN3 CN2 CN1
CN5
M
CN18
FUSE
T3.15A/250VAC
LN
CN12 CN14 CN15 CN11 CN17 CN13
CN16
M
4321
TRANSFORMER
CENTRAL
CONTROLLER
FLOAT
RECEIVER
0010576948
INDOOR
FAN MOTOR
CAPACITOR
WATER PUMP MOTOR
W
B
BL
BR
BL
BR
CN19
POWER SUPPLY
TO OUTDOOR UNIT
Y
Y
OR
OR
ON
1243ON1243
ON
1243
ON
1
2
1
4-WAY VALVE
RELAY
13
7
8
5
24 6
CONNECT TO INDOOR UNIT
CONNECT TO INDOOR UNIT
POWER SUPPLY
TERMINAL
BLOCK
TERMINAL
BLOCK
TERMINAL
BLOCK
3-PHASE DETECTOR
COMP.
U(R)
V(S)
W(T)
Y/G
MAGNETIC
CONTACTOR
OUTDOOR CIRCUIT DIAGRAM
0010576947
CRANKCASE
HEATER
CAPACITOR
CAPACITOR
LOW
PRESSURE
SWITCH
DEFROST
TEMP.
SENSOR
COMP.
TEMP.
SENSOR
PRESSURE SWITCH
FAN MOTOR
FAN MOTOR
GRGR
GR
BR
BL
B
B
B Y/G
Y/G
SR
B:BLACK BL:BLUE BR:BROWN GR:GRAY
W:WHITE Y/G:YELLOW/GREENR:RED
TN
GR
B
W
NL
W
W
34
B
B
B
B
RBR
5
Y/G
Y/G
Y/G
M
M
M
NOTE:THE L N ON TERMINAL BLOCK IS EQUAL TO 1 2.
PARTS IN DASHED FRAMES ARE NOT AVAILABLE FOR SOME TYPES.
Page 77
11.2 Circuit diagram
HBU-18CF03
1 2 3 4 56
A
B
C
D
6
54321
D
C
B
A
Title
Number RevisionSize
B
Date: 24-Jun-2005 Sheet of
File: F:\eee\ \workspace\ \GT16\GT16.ddb
周永 商用空调 Drawn By:
+5V1GND
2
外部故障输出
3
OSC15RST6OSC2
4
运行指示灯7定时指示灯8水泵浮子开关9室外低压压力采集
10
487使能
11
网络输出12网络输入13过零检测
14
EE PROM SCL15EE PROM SDA16NOP
17
电加热（预留）
18
GND19+5V
20
遥控接收
21
室内风机反馈22室内温度采集25室内风机输出
23
蜂鸣器
24
室内盘管温度采集26室外盘管温度采集
27
2/4/6温度补偿
28
// / /冷 暖 室外 缩 时 强制
29
网络地址低位30网络地址高位
31
电流检测
32
+5V
33
GND
34
A步进电机35B步进电机36C步进电机37D步进电机
38
/水泵 指示灯39/压机 指示灯
40
四通阀41外风机
42
IC1
GT16
+5
+5
+5
XT1
8M
N4
2SC2412
R21
10K
D2
1N4148
E6
1u/25V
C10
104
+5
N2
2SC2412
N3
2SC2412
POWER
TIMER
TIMER
POWER
FLOAT
FLOAT
1
2
CN3
PRESSURE
LOW
LOW
RO
1
/RE
2
DE
3
DI
4
GND5VCC8B7A
6
IC2
MAX4 87
+5
DL2
103
DL1
103
487EN
487EN
487IN
487OUT
487OUT
487IN
1
2
CN4
NETWORK
D7 1N4007
D5 1N4007
D4 1N4007
D3 1N4007
Vin
1
GND
2
Vout
3
IC3
7805
D6
1N4007
E5
2200u/35V
C12
104
C6
104
E1
470u/16V
+5
R16
4.7K
R15
10K
C11
103
N6
2SC2412
R17
10K
R23
10K
+5
C16
102
ZERO
ZERO
765
123
4
8
IC4
AT24C0 1A
+5
R7
10K
SCL
SCL
SDA
SDA
+5
K5
电加热
K4
外风机
K3
压机
K2
四通阀
K1
水泵
1234567
8
10111213141516
9
IC5
2003AN
+12
+12
+12
+12
+12
+12
ERROR
HEAT1
HEAT1
OUTFAN1
OUTFAN1
VALVE1
VALVE2VALVE1
OUTFAN2
HEAT2
COMP1
COMP2
COMP1
COMP2
VALVE2
OUTFAN2
HEAT2
PUMP1
PUMP2PUMP1
PUMP2
STEP-A
STEP-A
STEP-B
STEP-B
STEP-C
STEP-C
STEP-D
STEP-D
1
2
3
4
8
7
6
5
BM4
4 5 6 7
1
2
3
4
8
7
6
5
BM3
0 1 2 3
1
2
3
4
5
6
RB3
HEADER 6
1
2
3
4
5
6
RB4
HEADER 6
C18
103
C19
103
ADDR-H
ADDR-H
ADDR-L
ADDR-L
1
2
CN6
OUTPIPE
R9
20K
R10
20K
R11
20K
+5 +5
E2
4.7u/50V
E3
4.7u/50V
E4
4.7u/50V
+5+5+5
R12
1K
R13
1K
R14
1K
C7
103
C8
103
C9
103
OUTPIPE
OUTPI PE
PIPE
ROOM
ROOM
PIPE
BUZZ1
BUZZER
+12
R33
1K
R32
120
+12
N7
2SC2412
R34
4.7K
R18
1K
RECE IVE
C15
102
1
2
CN1
ERROR
ERROR
12345
CN10
STEPMOTOR
+12
COMP- LED
1234567
CN5
PANEL
+5
RECEIVE
R5
1K
R3
1K
R1
1K
FAN
C3
103
C2
103
C1
103
N9
2SC2412
N8
2SC2412
R36
4.7K
R35
4.7K
R20
4.7K
R19
4.7K
R28
4.7K
220V-L
1
CN15
PUMP
1
CN14
VALVE
1
CN13
COMP1CN12
OUTFAN
1
CN11
HEALTH
COMP-LED
1
2
3
4
8
7
6
5
BM2
SW DIP-4
1
2
3
4
5
6
RB1
HEADER 6
1
2
3
4
5
6
RB2
HEADER 6
C13
103
C14
103
SELECT1
SELECT2
SELECT1
SELECT2
R221M
123
CN9
TRANSFORM ER-II
C4
104
C5
104
R6
10K
R2
10K
R4
10K
D1
1N4148
D13
1N4148
D14
1N4148
+12
+12
N5
2SC2412
+5
R25
10K
R24
1K
+5
+5
+5
+5
1
CN19
220V-N
R38
10K
R41
120
R42
10K
1
2
3
4
CN20
PIPE ROOM
1
2
4
3
BM1
SW DIP -2
1
2
CN7
XT
1
2
CN21
TRANSFORMER-I
220V-L-I
220V-N-I
R43
10K
1
CN17
POW
1
CN16
COM
220V-L
220V-N
FUSE1
T3.15A250VAC
VR1
VARISTOR
C27
104/275V
LB1
TRANS3
C28
104/275V
220V-L-I
220V-N-I
+5
CHECK
CHECK
R56
10K
C22
104
C23
104
C24
104
+5
123
CN18
FAN
220V-N
FAN
N1
2SC2412
R52
4.7K
IC9
MOC30 51
R53
220
+5
RC1
103+120
R54
470/0.5W
R55
5.1K
IC1 0
TRIAC
R57
10K
R58
390/0.5W
C29
103/275V
220V-L
C17
104
C21
104
C20
104
+12
R59
1K
R60
10K
+5
1
2
3
4
Ito ph o me
CN22
+5
487IN
487OUT
123
CN2
FLOAT
L1
480mH
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
77
Page 78
HDU-42CF03/H
1 2 3 4 5 6 78
A
B
C
D
8
7654321
D
C
B
A
C24
100UF/16V
Vin
1
GND
2
Vout
3
7812
+5
C13
10UF /16V
R6
10K
C26
103
C8
102
R13
10K
R15
20K
C12
4.7UF/50V
+5
FUSE
T3. 15A/250V A C
C1
0.1UF/275V
Vin
1
GND
2
Vout
3
7805
+5
T1
C4
104
C3
2200UF/25V
C5
100UF/16V
C6
104
JK5
JK1
JK6
JK2
JK3
C14
103
R2
10K
R8
10K
R7
1K
C9
103
R9
1K
R10
10K
C16
104
C17
4.7UF/50V
+5
OSC
R11
10K
C18
103
CHECK
R28
+12
R24 5.6K
R25
1K
Q3
9014
+12
+12
+5
C7
104
+5
+5
+5
+5
+12
R1
5.6K
+5
+12
Q4
9014
Q1
9014
R3
10K
R32
10K
R4
3K
+12
R29
10K
+5
C23
104
R5
39
CN2
CN10
DL4
CN1
EX HT
41
TMP87C846
IC1
N
L
CN3 CN9
D4 D3
D2
D1
VR
XT
TEST
RESET
XIN
XOUT
GND VREF
VDD
123456789
1011121314151617181920
21 22
23242526272829303132333435363738394041
42
600D
IC2
FM
CN4
HFMFLF
N
PUMP
CN8
CN5
40
+12
GND
CN12
CN11
28
LN
AB C D
C15
10UF/16V
C20
104
A1
1
A2
2
A3
3
A4
4
A5
5
A6
6
A7
7
Q7
10
Q6
11
Q5
12
Q4
13
Q3
14
Q2
15
Q1
16
GND
8
VCC
9
IC3
ULN2003A
Q6
R31
5.6K
0.01UF/275V
C21
100
100
C25
0.01UF/275V
JK4
C
CN7
3P
嵌入整合线控单冷室内板原理图
KF-71QW/E
D7
4148
4007*4
+5
RB4
SW2
JP1 JP2 JP3 JP 4
C29 103
R34
10K
+5
CN24
C22
103
C28
102
R33
10K
R30
20K
C12
4.7UF/50V
+5
Commercial Air Conditioner
Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
78
Page 79
Commercial Air Conditioner
Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
79
+5
C3
4.7UF/50V
R22
20K-1%
R20
10K
CX1
JK6
JK7
FUSE
T6.3A/250V
ST
O_FAN
CN3
内盘管温度
R7
10K
R12
10K
C36
103
CN15
+5
+5
R55
10K
C35
103
1/60
+5
C38
10K
C19
104
+5
R27
10K
R19
10K
C9
102
R21
20K-1%
C10 102
C2
4.7uF/50V
室内温度
JK8
R18
4.7K
Q1
9014
CN16
JK5
JK3
JK4
+12
JK9
+12
NEB4B-XH-A(白)
NEB2B-XH-A(红)
CN20
R34
10K
RX
1
远程监控接收
9
定时指示
11
风向控制
14
水泵
15
浮子开关
16
TEST
17
RESET
18
Xin
19
Xout
20
GND
21
Vref
22
强制运行
23
室内温度
24
室内盘管温度
25
CT
检测
26
辅助电加热
27
功能选择
28
门开关
29
除霜
30
高风
31
中风
32
低风
33
蜂鸣器
34
压机
35
远程监控发送
36
四通阀
37
外风机
38
/
遥控 线控
39
压力开关
40
/
单冷 冷暖
41
Vcc
42
TX
2
电源控制
3
升降控制
4
缩时
5
1
机型选择位
6
2
机型选择位
7
遥控接收
8
压机指示
10
运行指示
12
水泵指示
13
IC1
TMP87PH46
KFR-120LW电路 原理图
R48
1K
+12
R30
10K
R36
2.2K
R8
1K
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
IC3
2003
FM
Q8
9014
R2
4.7K
D4
1N4148
C42
104
C23
100UF/16V
C1
2200UF/25V
C11
104
+5
C8
0.1uF/275V
+12
D7
D8
D9D10
火线
ZE1
7805
7812
C18
100UF/16V
C43
104
0.01uF/275V 100欧/1W
C15
R15
1
CN1
1
CN26
1
高风
1
中风
1
低风
1
零线
C27
104
R3
1K
BUZ
+12
R29
10K
8
7
6
5
1
2
3
4
IC4
24C01A
C20 104
R43
10K
R37
10K
+5
+12
CN8
NEB2B-XH-A(白)
CN12
NEB8B-XH-A( 白)
C26
102
1
CN-N1
1
1
R56
1K
CN14
C25
103
C4
104
R54
10K
FM
CN18
R14
100欧/1W
C14 0.01UF/275V
CN4
CN7
CN19
摆风
风机
CN25
C33
10UF/16V
Q6
9014
R40
4.7K
D3
1N4148
C12 103
R38
10K
Q3
9014
R47
10K
+5
R_Receive
R_Receive
远程通信
CN5CN6
变压器次级 变压器初级
C29
103
C28
103
C30
103
C31
103
+5
JD
R4
560
LED1
+5
（绿色）
JA
C22
10UF/16V
C39
10UF/16V
R17
10K
摆风
新风
0010401185
T1
NERTB-1.5-2PNEB3B-XH-A(白色）
RB1
C5 103
JP1
JP2
JP3
JP4
R61
10K
R62
20K-1%
C46
102
C45
4.7uF/50V
1
2
B2B-XH-A
CN27
+5
C44
102
R6
10K
1
2
B2B-VH-W
CN28
+5
除霜温度
压力开关
连接
断开
JP1 JP2 JP3
IC2
9012
R64
2.2K
R63
560
R41
100
HPU-42HF03
Page 80
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
80
11.3 Printed diagram
HBU-18CF03
Port and definition
CN1：external alarm input
CN2：control port of float switch
CN3：control port of low pressure switch
CN4：central control port
CN5：remote receiver panel
CN6：outdoor deforst
Page 81
CN7：time-shrink port
CN9：output port of transformer
CN10：swing motor port
CN11：reserved port
CN12：outdoor fan motor port
CN13：compressor port
CN16：neutral wire port
CN17：live wire port
CN18：fan motor port
CN19：neutral wire port
CN20：indoor coil temp. sensor
indoor ambient temp. sensor
CN21：input port of transformer
CN22：control port of network appliance
CN14
：control port of 4-way valve
CN15：water pump port
Dip switch state
BM1（1） BM1（2）
Remark
No outdoor PCB
× ×
The PCB of this
type have not
outdoor PCB
OFF-× ON-√
Unitary free
√ ×
Free multi
× √
Unitary inverter
√ √
Dip switch state BM2(1) BM2(2) BM2(3) BM2(4)
No temperature
compensation
× ×
* *
Temperature compensation
2℃
√ ×
* *
Temperature compensation
4℃
× √
* *
Temperature compensation
6℃
√ √
* *
Cooling only/heating and
cooling
* *
√/×
*
Have/no defrost sensor * * *
√/×
BM3、BM4：set address when used central control
BM4 BM3
Address 1 2 3 4 1 2 3 4
1
× × × × × × ×
2
√ × × × × × ×
3
× √ × × × × ×
4
√ √ × × × × ×
×- no
network
appliance
5
× × √ × × × ×
6
√ × √ × × × ×
……
…… …… …… …… …… ……
126
√ × √ √ √ √ √
127
× √ √ √ √ √ √
128
√ √ √ √ √ √ √
√- have
network
appliance
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
81
Page 82
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
82
HDU-42CF03/H
Page 83
Port and definition
CN1: indoor coil temperature sensor
CN2: connection port of detector
CN3: output port of transformer
CN4: swing port
CN5: water pump port
CN7: control port of outdoor compressor and fan motor
CN8: indoor fan motor port
CN9: input port of transformer
CN10: power input port of PCB
CN1 1: float switch
CN12: wired controller port
CN23: connection port of outdoor defrost sensor
CN24: control port of outdoor low pressure switch
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
83
Page 84
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
84
Port and definition:
CN1：control port of live wire of swing motor
CN3：signal input port of ambient temp. sensor ,coil temp. sensor
CN4：control port of 4-way valve（not available for cooling only type）
CN5：primary side of transformer
CN6：second side of transformer
CN7：control port for outdoor fan motor（not available for cooling only type）
CN11：control port of live wire of electric heating
CN12：connect the input of LED
CN13：connect port of netural wire of electric heating
CN16：connect port of remote control detector
CN18：live wire input port of PCB
CN19：netural wire input port of PCB
CN20：outdoor compressor control terminal（also can control outdoor fan motor for
cooling only type）
CN22：high speed control port of indoor fan motor
CN23：middle speed control port of indoor fan motor
HPU-42HF03
Page 85
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
85
CN24：low speed control port of indoor fan motor
CN25：netural wire port of indoor fan motor
CN26：netural wire port of swing motor
CN27：control port of outdoor defrost sensor（not available for cooling only type）
CN28：low pressure switch
Page 86
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
86
11.2 Sensor characteristic
Model Name Code Sub-part code characteristic
Indoor ambient
temp. sensor
001A3900159
001A3900003
R25=23KΩ±2.5%
B25/50=4200K±3%
HBU-18CF03
Indoor coil temp.
sensor
001A3900006
001A3900004
R25=10KΩ±3%
B25/50=3700K±3%
Indoor coil temp.
sensor
001A3800128 001A3900004
R25=10KΩ±3%
B25/50=3700K±3%
HDU-42CF03/H
ambient temp.
sensor
/ / /
Indoor ambient
temp. sensor
001A3800127
001A3900003
R25=23KΩ±2.5%
B25/50=4200K±3%
Indoor coil temp.
sensor
0010401922 001A3900004
R25=10KΩ±3%
B25/50=3700K±3%
HPU-42HF03
Outdoor defrost
sensor
0010401922 001A3900004
R25=10KΩ±3%
B25/50=3700K±3%
R25=23KΩ±2.5%
B25/50=4200K±3%
R25=23KΩ±2.5%
B25/50=4200K±3%
T(℃)
Rnom(KΩ)
2℃
74.67
25℃
23
48℃
8.39
-20℃
281.34
3℃
70.65
26℃
21.94
49℃
8.05
-19℃
263.56
4℃
66.88
27℃
20.94
50℃
7.73
-18℃
247.04
5℃
63.33
28℃
19.99
51℃
7.43
-17℃
231.66
6℃
60
29℃
19.09
52℃
7.14
-16℃
217.35
7℃
56.86
30℃
18.23
53℃
6.86
-15℃
204.02
8℃
53.91
31℃
17.42
54℃
6.6
-14℃
191.61
9℃
51.13
32℃
16.65
55℃
6.34
-13℃
180.04
10℃
48.51
33℃
15.92
56℃
6.1
-12℃
169.24
11℃
46.04
34℃
15.22
57℃
5.87
-11℃
159.17
12℃
43.72
35℃
14.56
58℃
5.65
-10℃
149.77
13℃
41.52
36℃
13.93
59℃
5.44
-9℃
140.99
14℃
39.45
37℃
13.34
60℃
5.24
-8℃
132.78
15℃
37.5
38℃
12.77
-7℃
125.11
16℃
35.66
39℃
12.23
-6℃
117.93
17℃
33.92
40℃
11.71
-5℃
111.22
18℃
32.27
41℃
11.22
-4℃
104.93
19℃
30.72
42℃
10.76
-3℃
99.04
20℃
29.25
43℃
10.31
-2℃
93.52
21℃
27.86
44℃
9.89
-1℃
88.35
22℃
26.54
45℃
9.49
0℃
83.5
23℃
25.3
46℃
9.1
1℃
78.94
24℃
24.12
47℃
8.74
Page 87
R25=10KΩ±3%
B25/50=3700K±3%
R25=10KΩ±3%
B25/50=3700K±3%
T(℃)
Rnom(KΩ) 11 18.43 43 4.93 71 1.9
-20℃
90.79 12 17.61 44 4.9 72 1.85
-19 85.72 13 16.83 45 4.58 73 1.79
-18 80.96 14 16.09 46 4.42 74 1.73
-17 76.51 15 15.38 47 4.26 75 1.68
-16 72.33 16 14.71 48 4.11 76 1.63
-15 68.41 17 14.08 49 3.97 77 1.58
-14 64.73 18 13.48 50 3.83 78 1.54
-13 61.27 19 12.9 51 3.7 79 1.49
-12 58.02 20 12.36 52 3.57 80 1.45
-11 54.97 21 11.84 53 3.45
-10 52.1 22 11.34 54 3.33
-9 49.4 23 10.87 55 3.22
-8 46.86 24 10.43 56 3.11
-7 44.46 25 10 57 3.11
-6 42.21 26 9.59 58 2.9
-5 40.08 27 9.21 59 2.81
-4 38.08 28 8.84 60 2.72
-3 36.19 29 8.48 61 2.63
-2 34.41 30 8.15 62 2.54
-1 32.73 31 7.83 63 2.49
0 31.14 32 7.52 64 2.38
1 29.64 33 7.23 65 2.3
2 28.22 34 6.95 66 2.23
3 26.4 35 6.68 67 2.16
4 25.61 36 5.43 68 2.09
5 24.41 37 5.6 69 2.03
6 23.27 38 5.59 70 1.96
7 22.2 39 5.73
8 21.18 40 5.52
9 20.21 41 5.32
10 19.3 42 5.12
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
87
Page 88
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
88
12. Air velocity distribution
1) HBU-18CF03
Air Velocity Distribution
Cooling
Blowy angle:40
Temperature Distribution
Cooling
Blowy angle:40
a. Cooling / Air Velocity Distribution
b. Cooling / T
emperature Distribution
421
m/s
102
m/s
0
4
2
0421
27
25
22
12
22
27
25
0
4
2
Page 89
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
89
2) HDU-CF03/H
cooling
cooling
air discharge angle 5
Air Velocity distribution
Temperature distribution
air discharge angle 5
0
1.8
2.4
0.5
5.5
25
0
1.8
22
27
5.5
2.4
Page 90
Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
Sincere Forever
Haier Group
Haier Industrial Park, No.1, Haier Road
266101, Qingdao, China
http://www.haier.com
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