Grunaire GMU028HXB-3 User manual

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LAUNAM S'RENWO
3-BXH820UMG
)RETREVNI(
4-BXH820UMG
66129903646

CONTENTS
1
In line with the company’s policy of continual product improvement,the aesthetic and dimensional characteristics,technical
data and accessories of this appliance may be changed without notice.
CONFORMITYANDRANGE
The air conditioner you have purchased is in conformity with the following European
Directives UL1995:
GENERAL INFORMATION
GENERALINFORMATION
1
2
3
3
3
4
６
６
７
７
８
９
Technical Data
Electrical Connections
Installing The Outdoor Unit
Maintenance
Installation Dimension Diagram
Check After Installation
Fault Indication
Bleeding
Conformity And Range
The Instructions Befor Use
Name Of The Parts
Outdoor Unit Working Temperature Range
GENERAL
INSTALLER INFORMATION
Please read this owner's manual carefully before
Only use the air conditioner as instructed in this
booklet.
operating the unit and keep it carefully for consultation.
ALLOCATION 10

2
★
★
WARNING
When having a burning smell
or smoke, please turn off the power
supply and contact with the service
may be damaged, and may cause
center .
If the abnormity still exists, the unit
electric shock or fire.
Never cut off or damage power
cables and control wires. If the power
cable and signal control wire were
damaged, change them by professional.
Power must adopts the special
circuit to prevent fire.
Otherwise, it can cause electric
shock or fire.
Disconnectthepowersupplyif
not use the air conditioner for a long
time.
Otherwise, the accumulated dusts
may cause overheating or fire.
Never damage the electric wire or
usetheelectricwirewhichisnot
appointed.
Otherwise, it will cause overheating or
fire.
When cleaning, it is necessary
tostopdrivingandturnoffthe
power supply.
Cut off power supply
Otherwise,itmaycauseelectric
shock or damage.
The power supply must adopt
the special circuit that with air switch
protectionandassureithasenough
capacity. The unit will be turned on or
off according to your requirement
automatically,pleasedonotturnon
or turn off the unit frequently, otherwise
disadvantage effect may be caused
to the unit.
Rated voltage of this air conditioner
220-240V～60Hz,The compressor
will vibrate sharply if the voltage is too
low, resulting in damage to refrigerating
system. Electrical component are easy
to damage if the voltage is too high.
service center to repair.
Don't attempt to repair the air conditioner
by yourself.
shock or fire, so you should contact the
The wrong repair will lead to an electric
dangerous.
As falling off the outdoor unit can be
Don't step on the top of the outdoor unit
or place something on it.
fall of the unit and cause the injury.
If it is damaged, it may lead to the
Please note whether the installed
stand is firm enough or not.
THE INSTRUCTIONS BEFORE USE
Earthing: The unit must be reliably
earthed. The earthing cable shall
be connected to the special earthing
device in the construction.
GENERALINFORMATION
The appliance shall not be used by children
without supervisor.

Note:the above figures are only intended to be a simple
diagram of the appliance and may not correspond to the
appearance of the units that have been purchased.
OUTDOORUNIT
No.Description
1Air outlet grille
2Valve
TECHNICALDATAGENERALINFORMATION
Electricaldata
Electricity supply
mm2
Refrigerant gasR410 A
Size and clearance
H
Minimum power cord section
Fuse or air switch 30 A
Warning



4.0
mm
mm
mm
MOD
L
W
GMU028HXB-3
950
420
840
The temperature of refrigerant circuit will be high,please keep the

interconnection cable away from the copper tube.
NAMES OF THE PARTS
Maximum cooling
Minimum cooling
Maximum heating
Minimum heating
Outdoor side DB/WB( )
43/26(T1)
21/-
24/18
-5/-6
OUTDOOR UNIT WORKING TEMPERATURE RANGE GENERALINFORMATION
1
2
GENERALINFORMATION
3
220-240V～60 V ～Hz
GMU028HXB-3
1
2
L W
H
Be sure to cut off the power supply before cleaning the air conditioner;
otherwise electric shock might happen.
Wetting of air conditioner may cause the risk of electric shock. Make
sure not to wash your air conditioner in any case.
Volatile liquids such as thinner or gasoline will cause damage to the
appearance of air conditioner. (Only use soft dry cloth moist cloth clean
the air conditioner cabinet).
Do not dispose this product as unsorted municipal waste.
Collection of such waste separately for special treatment
is necessary.

If the supply cord is damaged, it must be replaced by the manufacturer
or its service agent or a similarly qualified person in order to avoid a hazard.

Wrong wire connection may cause malfunction of some
electric components.After fixing cable, ensure that
An all-pole disconnection switch having a contact
separation of at least 3mm in all pole should be
connected in fixed wiring.
leads between connection to fixed point have some space.
2.
3.
4.
5.
Remove the cable clamp, connect the power connection
1.Ｒ emove the handle at the right side plate of the
outdoor unit (one screw).
the connection. The fitting line distributing must be
Wiring should meet that of indoor unit.
Fix power connection wire by wire clamp.
Ensure wire has been fixed well.
Install the handle.
cable with the terminal at the row of connection and fix
consistent with the indoor unit. terminal of line bank.
ELECTRICAL CONNECTIONS INSTALLER
4
The connection pipes and the connectiong wirings of
the unit A ,unit B and unit C must be corresponding to each
other respective.
The appliance shall be installed in accordance with
national wiring regulations.
Do not install the outdoor unit where it is exposed
to the sunlight.
To the power supply
To unit B
Handle
To unit A
cable
interconnection interconnection
cable
cord
Power
To unit C
interconnection
cable
GMU028HXB-3:
Outdoor unit
Indoor unit
L
L

Wrong wire connection may cause malfunction of some
electric components.After fixing cable, ensure that
An all-pole disconnection switch having a contact
separation of at least 3mm in all pole should be
connected in fixed wiring.
leads between connection to fixed point have some space.
2.
3.
4.
5.
Remove the cable clamp, connect the power connection
1.Ｒ emove the handle at the right side plate of the
outdoor unit (one screw).
the connection. The fitting line distributing must be
Wiring should meet that of indoor unit.
Fix power connection wire by wire clamp.
Ensure wire has been fixed well.
Install the handle.
cable with the terminal at the row of connection and fix
consistent with the indoor unit. terminal of line bank.
ELECTRICAL CONNECTIONS INSTALLER
5
The connection pipes and the connectiong wirings of
the unit A ,unit B,unit C and unit D must be corresponding
to each other respective.
The appliance shall be installed in accordance with
national wiring regulations.
Do not install the outdoor unit where it is exposed
to the sunlight.
HANDLING
After having removed the packaging,check that the con-
tents are intact and complete.
The outdoor unit must always be kept upright.
Handling must be done by suitably equipped qualified
technical personnel using equipment that is suitable for
the weight of the appliance.
USER
To the power supply
To unit B
Handle
To unit A
interconnection
cable
interconnection
cable
cord
Power
To unit C
interconnection
cable
To unit D
interconnection
cable
GMU028HXB-3:
Outdoor unit
Indoor unit
L
L

Use bolts to secure the unit to a flat, solid floor.
When mounting the unit on a wall or the roof, make
sure the support is firmly secured so that it cannot
move in the event of intense vibrations or a strong
wind.
Do not install the outdoor unit in pits or air vents
Installingthepipes
Use suitable connecting pipes and equipment for the
refrigerant R410A.
The refrigerant pipes must not exceed the maximum
lengths 10m.
Wrap all the refrigerant pipes and joints.
Tighten the connections using two wrenches working
in opposite directions.
INSTALLER
Humid air left inside the refrigerant circuit can cause com-
pressor malfunction. After having connected the indoor
and outdoor units, bleed the air and humidity from the
refrigerant circuit using a vacuum pump.
(1) Unscrew and remove the caps from the 2-way and 3-
way valves.
(2) Unscrew and remove the cap from the service valve.
(3) Connect the vacuum pump hose to the service valve.
(4) Operate the vacuum pump for 10-15 minutes until an
absolute vacuum of 10 mm Hg has been reached.
(5) With the vacuum pump still in operation, close the
low-pressure knob on the vacuum pump coupling. Stop
the vacuum pump.
(6) Open the 2-way valve by 1/4 turn and then close it
after 10 seconds.Check all the joints for leaks using
liquid soap or an electronic leak device.
(7) Turn the body of the 2-way and 3-way valves. Discon-
nect the vacuum pump hose.
(8) Replace and tighten all the caps on the valves.
BLEEDINGINSTALLER
INDOOR
UNIT
Install the drain fitting and the drain hose (for
model with heat pump only)
Condensation is produced and flows from the outdoor unit
when the appliance is operating in the heating mode. In order
not to disturb neighbours and to respect the environment,
install a drain fitting and a drain hose to channel the conden-
sate water. Install the drain fitting and rubber washer on the
outdoor unit chassis and connect a drain hose to it as shown
in the figure.
6
Vacuum pump Vacuum pump
Connect to the
indoor unit
Pompa a vuoto
INSTALLINGTHEOUTDOORUNIT
Location
Twisting moment (N.m)
35-40
60-65
45-50
70-75
ø
ø
12
19
Diameter (mm)
ø
ø
9.52
16
15-20
ø6
12
12K and 18K unit need to be installed the indoor unit
connection pipe with the "conversion joint"
12K and 18K MODE:
conversion joint
Caution: Installation Must be Performed in Accordance
with the NEC/CEC by Authorized Personnel Only.
Refrigerant fluid direction of flow
3-way valve
2-way valve
Service
inlet
(2) Turn
(8) Secure
(7) Turn to open fully
(2) Turn
(8) Secure
Valve cap
(6) Open by 1/4 turn
(7) Turn to open fully
(2) Turn
(8) Secure
Valve cap

Use suitable instruments for the refrigerant R410A.
Do not use any other refrigerant than R410A.
Do not use mineral oils to clean the unit.
MAINTENANCE
INSTALLER
INSTALLER
INSTALLATION DIMENSION DIAGRAM
The installation must be done by trained and qualified service personnel
with reliability according to this manual.
Contact service center before installation to avoid the malfunction due to
unprofessional installation.
When picking up and moving the units, you must be guided by trained and
qualified person.
Ensure that the recommended space is left around
the appliance.
7

INSTALLER
CHECK AFTER INSTALLATION
Check Items Problems Owing to Improper Installation
Is the installation reliable? The unit may drop, vibrate or make noises
Has the gas leakage been checked? May cause unsatisfactory cooling (heating)
effect
Is the thermal insulation of the unit
sufficient?
May cause condensation and water dropping
Is the drainage smooth? May cause condensation and water dropping
Does the power supply voltage accord
with the rated voltage specified on the
nameplate?
The unit may bread down or the components
may be burned out
Are the lines and pipelines correctly
installed?
The unit may bread down or the components
may be burned out
Has the unit been safely grounded? Risk of electrical leakage
Are the models of lines in conformity
with requirements?
The unit may bread down or the components
may be burned out
Are there any obstacles near the air
inlet and outlet of the indoor and outdoor
units?
The unit may bread down or the components
may be burned out
Have the length of refrigerating pipe
and refrigerant charge amount been
recorded?
It is not easy to decide the charge amount
of refrigerant.
8

D101 D102 D103
D104 D105 D106
D107 D108 D109
Meaning Meaning Meaning
Compressor operates Air exhaust protection
frequency reducing
Air exhaust protection
frequncy limit
Compressor high pressure protection
unit stop
Cooling overload frequncy
reducing Cooling overload frequncy limit
Air exhaust protection unit stop Over current protection
frequency reducing
Over current protection
frequency limit
Communication malfunction unit stop
(Include indoor unit and driver
Phase current protection
frequncy reducing
Phase current protection
frequncy limit
IPM modular protection
unit stop
Heating A unit anti-high
temperature frequncy reducing
Heating A unit anti-high
temperature frequncy limit
Over current protection
unit stop
Heating B unit anti-high
temperature frequncy reducing
Heating B unit anti-high
temperature frequncy limit
Cooling overload unit stop Heating C unit anti-high
temperature frequncy reducing
Heating C unit anti-high
temperature frequncy limit
Each indoor unit starts heating at same time
anti-high temperature protection unit stop
Heating D unit anti-high
temperature frequncy reducing
Heating D unit anti-high
temperature frequncy limit
Each indoor unit anti-freezing protection
at same time unit stop Defrosting Oil return
Outdoor unit temp. sensor malfunction
or each indoor unit temp. sensor malfunction unit stop
Compressor overload protection
unit stop
Compressor low-pressure protection
unit stop (preserved)
Phase current protection
unit stop
E2 PROM Error
unit stop
DC power supply short circuit
Meaning Meaning Meaning
Outdoor ambient temp. sensor malfunction
Outdoor tube temp. sensor malfunction
Outdoor air exhaust temp. sensor
malfunction
Communication malfunction with
driver (cannot receive correct data from
driver within 10s)
A unit communication malfunction
(cannot receive correct data within
3mins.)
B unit communication malfunction
(cannot receive correct data within
3mins.)
A unit indoor middle temp. sensor
malfunction
B unit indoor middle temp. sensor
malfunction
A unit indoor outlet pipe temp. sensor
malfunction
B unit indoor outlet pipe temp. sensor
malfunction
A unit indoor inlet pipe temp.
sensor malfunction
B unit indoor inlet pipe temp.
sensor malfunction
A unit indoor ambient temp.
sensor malfunction B unit indoor ambient temp.
sensor malfunction
A unit modes conflict B unit modes conflict
A unit anti-freezing protection B unit anti-freezing protection
A unit anti-high temp. protection B unit anti-high temp. protection
Meaning
C unit communication malfunction
(cannot receive correct data within
3mins.)
D unit communication malfunction
(cannot receive correct data within
3mins.)
Received communication data
proof test correct will flash once
C unit indoor middle temp. sensor
malfunction
D unit indoor middle temp. sensor
malfunction
C unit indoor outlet pipe temp. sensor
malfunction
D unit indoor outlet pipe temp. sensor
malfunction
C unit indoor inlet pipe temp.
sensor malfunction
D unit indoor inlet pipe temp.
sensor malfunction
C unit indoor ambient temp.
sensor malfunction
D unit indoor ambient temp.
sensor malfunction
C unit modes conflict
D unit modes conflict
C unit anti-freezing protection
C unit anti-high temp. protection
D unit anti-freezing protection
D unit anti-high temp. protection
Blink once Blink once Blink once
Twice Twice Twice
Three times Three times Three times
Four
times
Five
times
Six
times
Seven
times
Eight
times
Nine
times
Ten
times
Eleven
times
Twelve
times
Thirteen
times
Fourteen
times
Fifteen
times
Four
times
Four
times
Five
times
Five
times
Six
times
Six
times
Seven
times
Seven
times
Eight
times
Eight
times
Nine
times
Nine
times
Blink once
Twice
Three times
Four
times
Blink once
Blink once
Twice Twice
Three times Three times
Four
times
Four
times
Five
times
Six
times
Seven
times
Eight
times
Eight
times
Seven
times
Six
times
Five
times
Blink once Blink once
Twice Twice
Three times Three times
Four
times
Four
times
Five
times
Five
times
Seven
times
Seven
times
Six
times
Six
times
Eight
times
Eight
times
INSTALLER
FAULT INDICATION
9
Meaning
Meaning