CH GWHD(42)ND3EO Installation manual

MULTI
DUCTLESS INVERTER
HEAT PUMP
OUTDOOR UNIT
Installation manual
Models:
GWHD(30)ND3EO
GWHD(36)ND3EO
GWHD(42)ND3EO
TABLE OF CONTENTS
PAGE
SAFETY CONSIDERATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . 2
INDOOR UNITS COMBINATIONS . . . . . . . . . . .. . . . . . . . . . 3
PREFACE . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . 4
PRODUCT INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . 5
PREPARATION BEFORE INSTALLATION . . . . . . . . . . . . . . . 8
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
THE CONDITIONS LISTED BELOW ARE NOT CLASSIFIED
INTO ERRORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . 19
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . .21
SAFETY CONSIDERATIONS
Installing, starting up, and servicing air--conditioning equipment
can be hazardous due to system pressures, electrical components,
and equipment location (roofs, elevated structures, etc.).
Only trained, qualified installers and service mechanics should
install, start--up, and service this equipment.
Untrained personnel can perform basic maintenance functions such
as cleaning coils. All other operations should be performed by
trained service personnel.
When working on the equipment, observe precautions in the
literature and on tags, stickers, and labels attached to the
equipment.
Follow all safety codes. Wear safety glasses and work gloves. Keep
quenching cloth and fire extinguisher nearby when brazing. Use
care in handling, rigging, and setting bulky equipment.
Read these instructions thoroughly and follow all warnings or
cautions included in literature and attached to the unit. Consult
local building codes and National Electrical Code (NEC) for
special requirements. Recognize safety information. This is the
safety--alert symbol !! . When you see this symbol on the unit and
in instructions or manuals, be alert to the potential for personal
injury.Understand these signal words: DANGER, WARNING, and
CAUTION. These words are used with the safety--alert symbol.
DANGER identifies the most serious hazards which will result in
severe personal injury or death. WARNING signifies hazards
which could result in personal injury or death. CAUTION is used
to identify unsafe practices which may result in minor personal
injury or product and property damage. NOTE is used to highlight
suggestions which will result in enhanced installation, reliability, or
operation.
WARNING
!
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
Before installing, modifying, or servicing system, main
electrical disconnect switch must be in the OFF
position. There may be more than 1 disconnect switch.
Lock out and tag switch with a suitable warning label.
!
WARNING
EXPLOSION HAZARD
Failure to follow this warning could
result in death, serious personal injury,
and/or property damage.
CAUTION
!
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Do not bury more than 36 in. (914 mm) of refrigerant pipe
in the ground. If any section of pipe is buried, there must be
a 6 in. (152 mm) vertical rise to the valve connections on
the outdoor units. If more than the recommended length is
buried, refrigerant may migrate to the cooler buried section
during extended periods of system shutdown. This causes
refrigerant slugging and could possibly damage the
compressor at start--up.
SYSTEM REQUIREMENTS
Allow sufficient space for airflow and servicing unit. See
minimum required distances between unit and walls or
ceilings.
Recommended Connection Method for Power and Communication Wiring (To minimize communication wiring interference)
Power Wiring:
The main power is supplied to the outdoor unit. The field supplied
connecting cable from the outdoor unit to indoor unit consists of
three (3) wires and provides the power for the indoor unit. Two
wires are high voltage AC power and one is a ground wire.
Consult your local building codes and the NEC (National
Electrical Code) or CEC (Canadian Electrical Code) for special
requirements.
All wires must be sized per NEC or CEC and local codes. Use
Electrical Data table MCA (minimum circuit amps) and MOCP
(maximum over current protection) to correctly size the wires and
the disconnect fuse or breakers respectively.
Per caution note, only copper conductors with a minimum 300 volt
rating and 2/64--inch thick insulation must be used.
Communication Wiring:
A separate shielded copper conductor only, with a minimum 300
volt rating and 2/64--inch thick insulation, must be used as the
communication wire from the outdoor unit to the indoor unit.
To minimize voltage drop of the control wire, To minimize voltage
drop, the factory recommended wire size is 14/3 stranded with a
ground. In special cases where there is high electrical interference,
please use a separate shielded 16GA stranded control wire.
Never use air or gases containing
oxygen for leak testing or operating
refrigerant compressors. Pressurized
mixtures of air or gases containing
oxygen can lead to an explosion.
!
CAUTION
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
S Wires should be sized based on NEC and local codes.
S Use copper conductors only with a minimum 300 volt
rating and 2/64 inch thick insulation.
2
Specifications are subject to change without notice.
INDOOR UNITS COMBINATIONS
3
Specifications are subject to change without notice.
Preface
Please carefully read the instructions in this manual before installation and operation.
(1) For personal safety, please follow the instructions provided in this manual.
(2) The total capacity of the indoor units , which run at the same time, can not exceed that of the
outdoor units; otherwise, the cooling (heating) effect of each indoor unit would be poor.
Model
Minimum number of
connectable indoor units
Maximum number of
connectable indoor units
Minimum capacity of
connectable indoor units
Maximum capacity of
connectable indoor units
30K
36K
42K
2
2
2
4
5
5
18KBtu
18KBtu
18KBtu
42KBtu
48KBtu
51KBtu
(3) Switch the main power on eight hours before starting the unit to ensure a successful startup.
(4) It is normal for the indoor unit to run 20-70 seconds after the indoor unit receives the³VWRS´
signal to make full use of the after heat function for the next operation.
(5) When the running modes of the indoor and outdoor units conflict, the conflict appears on the
wired controller display in five seconds and then the indoor unit will stop.In this case, they revert to
the normal condition by synchronizing their running modes: the cooling mode is compatible with the
dehumidifying mode and the fan mode can work with any other mode. If the supply power fails when the
unit is running, the indoor unit sends the ³VWDUW´signal to the outdoor unit three minutes after power
recovery.
(6) Cautions for the Maintenance Personnel:
During maintenance, prior to the startup of the compress, ensure the heating belt
of the compressor has been powered for at least eight hours.
Once the compressor starts, it must work continuously for at least 30 minutes. If not, it may
be damaged.
4
Specifications are subject to change without notice.
2 Product Introduction
The Multizone system adopts inverter compressor technology. According to change displacement of
compressor, stepless capacity regulation within range of 15%~120% can be realized. Various product lineup is
provided with capacity range from 30KBtu to 42KBtu, which can be widely used in a boarding house , a working area
and especially applicable in a location with a variable load change.
2.1 Name of Main Parts
ķ ĸ
Ĺ
Ļ
ĺ
NO.
Name
ķ
Motor
ĸ
Fan
Ĺ
Electric Box
ĺ
Gas valve assembly
Fig1
5
Specifications are subject to change without notice.
Ļ
Liquid valve assembly
2.2 Combinations for outdoor and indoor units
High Wall
Indoor Unit
Duct Type
Indoor Unit
Cassettle Type
Indoor Unit
Floor Console
Indoor Unit
Fig 2
See Fig.2 for combinations for outdoor and indoor units. For the multizone series air conditioning system, one
outdoor unit is able to drive up to five indoor units which can be cassette type, duct type, high wall or floor console
type. The outdoor unit will run as long as any one indoor unit receives the running command, and all indoor units
stop once the outdoor unit is turned off.
Table 1 Energy Level and Capacity Code of the Indoor
Indoor Unit
High Wall
Flooring ceiling
Duct type
Cassettle type
Console
6
Nominal Unit Btuh
9,000
12,000
18,000
09,000
12,000
18,000
24,000
09,000
12,000
18,000
21,000
24,000
12,000
18,000
24,000
09,000
12,000
18,000
Indoor Model Number
GWH09QC-D3DNA1D/I
GWH12QC-D3DNA1D/I
GWH18QD-D3DNA1G/I
GTH(09)BA-D3DNA1A/I
GTH(12)BA-D3DNA1A/I
GTH(18)BA-D3DNA1A/I
GTH(24)BA-D3DNA1A/I
GFH(09)EA-D3DNA1A/I
GFH(12)EA-D3DNA1A/I
GFH(18)EA-D3DNA1A/I
GFH(21)EA-D3DNA1A/I
GFH(24)EA-D3DNA1A/I
GKH(12)BA-D3DNA2A/I
GKH(18)BA-D3DNA2A/I
GKH(24)BA-D3DNA1A/I
GEH(09)AA-D3DNA1C/I
GEH(12)AA-D3DNA1C/I
GEH(18)AA-D3DNA1C/I
Specifications are subject to change without notice.
Outdoor Model Number
GWHD(30)ND3EO
GWHD(36)ND3EO
GWHD(42)ND3EO
2.3 Rated working condition
Rating cooling
Rating Heating
Table 2
Indoor side state
Dry buib temp.̧
Wet buib temp.̧
80.06
66.92
69.98
60.08
Outdoor side state
Dry buib temp.̧
Wet buib temp.̧
95
75.02
47
43.00
NOTICE
1) The following listed cooling /heating capacity and noise is tested before shipping.
2) The parameters below are tested under a rated working condition. If there is any change to them, please refer to the
nameplate.
3) The heating capacity parameters of the heat pump indoor unit excludes the auxiliary electric heating power.
2.4 The range of production working temperature
Table 3
Outdoor Unit
System size
7
30
36
42
Cooling Operating Range
Outdoor Min - Max DB
°F
0~118
0~118
0~118
Heating Operating Range
Outdoor Min – Max DB
°F
-4~86
-4~86
-4~86
Specifications are subject to change without notice.
3 Preparation before Installation
3.1 Standard parts
Please use the following standard parts included with the air conditioning units.
Table 4
Outdoor Unit Parts
Name
Number
Picture
Quantity
1
Owner's
manual
1
2
Tube connector
subassy
8
Remark
3.2Selecting the installation site
1) Install the unit in a location that can withstand the weight of the unit and make sure the unit does not
shake or fall off.
2) Never expose the unit to direct sunshine and rainfall. Install the unit at a place
free of dust, typhoons and earthquakes.
3) Try to keep the unit away from combustible, inflammable and corrosive or exhaust gases.
4) Leave some space for heat exchanging and servising to guarantee the unit's normal operation.
5) Keep the indoor and outdoor units close to each other to shorten the pipe length and minimize
the number of pipe bends.
6) Never allow children to approach the unit and prevent them from touching the unit.
Figure 3 details the outdoor unit's required installation space when the outdoor unit is completely surrounded by walls.
1.64
1.64
19
2/3
1.64
19
2/3
3.28
6.56
78
3/4
1.64
6.56
78
3/4
unit:feet
Fig 3
8
Specifications are subject to change without notice.
3.3 Piping Connection
The maximum pipe length is shown in the following table. When the distance between units (piping length) is
out of the range listed below, normal operation of the unit can not be guaranteed.
Table 5
Connecting Pipe (inch)
Max. Height Difference between Indoor
Max. Pipe length(ft)
Model
Unit and Outdoor Unit (ft)
Liquid
Gas
When the outdoor unit is above,
30K
ž3/8
229.6
Ï1/4
the
maximum height difference between
36K
Ï3/8
246.1
Ï1/4
the indoor and outdoor units is up to 49.2ft.
When the indoor unit is above,
42K
Ï1/4
Ï3/8
246.1
the maximum height difference between
the indoor and outdoor units is up to 49.2ft.
NOTICE
1) Use water-proof insulating pipe.
2) Wall thickness of pipe: 0.019-0.039 inch; bearing pressure: 3.0MPa
3) The longer the connection pipe is, the more the cooling and heating capacity will decrease.
Outdoor Unit
Refrige
rant
Piping
System size
9
30
36
42
Min. Piping Length
ft
9.84
9.84
9.84
Standard Piping Length
ft
131.2
131.2
131.2
Max. outdoor-indoor height difference
ft
49.2
49.2
49.2
Max. height distance between indoor and indoor
ft
24.6
24.6
24.6
Max. height distance between indoor and outdoor and indoor
ft
49.2
49.2
49.2
Max. height distance between indoor and outdoor and outdoor up
ft
49.2
49.2
49.2
Max. equivalent piping outdoor to last indoor
ft
82
82
82
Max. Piping Length with no additional refrigerant charge
ft
131.2
131.2
131.2
Max. Piping Length
ft
229.7
246
246
Additional refrigerant charge (between Standard – Max piping length)
Oz/ft
0.2
0.2
0.2
Gas Pipe (size - connection type)
in
3/8
3/8
3/8
Liquid Pipe (size - connection type)
in
1/4
1/4
1/4
R-410A
R-410A
R-410A
6.17
8.05
8.05
Refrigerant Type
Heat Pump Models Charge Amount
Lbs
Specifications are subject to change without notice.
4 Installation
4.1 Outline and dimension of the outdoor unit
30K
Outline dimension and mounting holes
14 4/7
31
36 2/9
38 3/7
15 5/7
17 1/3
24
Unit:inch
Fig 4
42K
336K,
8GJQG36---3
Outline dimension and mounting holes
14 1/4
42 1/2
17 1/3
43 3/7
40
15 3/4
24 5/6
Unit:inch
Fig 5
10
Specifications are subject to change without notice.
4.2 Installation of the Connection Pipe
Connecting piping for the indoor unit and outdoor unit are in the manifold mode (see the figure below).
Fig 6
4.2.1 Piping between the Indoor and Outdoor Units
(1) If the liquid and gas stop valves, which have the sign A , B, C, D or E , have not been connected to the
indoor units, turn off the screw cap with the spanner airproof.
(2) Refer to Fig.7 for the appropriate amount of torque to tighten the screws.
(3) Point the flare end of the copper pipe at the screw and tighten the screw by hand.
(4) Next, tighten the screw with the torque wrench until it emits a sound (as shown in Fig.7).
(5) The bending degree of the pipe can not be too small; otherwise it will crack. Use a pipe tube
bender to bend the pipe.
(6) Wrap the exposed refrigerant pipe and the joints by sponge and then tighten them with the plastic tape.
P ip e
F la re N u t
Pipe
diameter
ĭ1/4 inch
ĭ3/8 inch
ĭ1/2 inch
ĭ5/8 inch
Thickness of
copper tube
•0315 inch
•0315 inch
•0315 inch
•0.0394 inch
Tightening
torque
11̚22 ft·lbf
26̚29 ft·lbf
33̚37 ft·lbf
44̚48 ft·lbf
Spanner
Fid 7
1) During the connection of the indoor unit and the refrigerant pipe, never pull the indoor unit joints forcefully,
otherwise the capillary or other pipes may crack, which would result in leakage.
2) The refrigerant pipe should be supported by brackets. Do not allow the unit to support the weight of the refrigerant pipe.
3) If the piping connection size of the outdoor unit does not match the piping connection size of the indoor unit, use the
piping connection dimension of the indoor unit. Use different-diameter joints which is installing on the place of
the piping connection to connect the indoor unit.
4) For the Free Match system, each pipe should be labeled to indicate which system it belongs to avoid mistaken
inaccurate piping.
4.2.2 Allowable pipe length and drop height among indoor and outdoor units
If the total refrigerant pipe length (liquid pipe) is shorter than that listed in the table below, no additional
refrigerant will be charged.
Table 6
Model
30K
42K
36K
Total Liquid Pipe
131.2ft
131.2ft
131.2ft
Length (a+b+c+d+e)
11
Specifications are subject to change without notice.
Allowable Length and Height for the Refrigerant Pipe
Table 7
Allowable Value
30K
36K
42K
Total length (actual length) of fitting
pipe
229.6ft
246.1ft
Length of farthest fitting pipe (ft)
82ft
82ft
LX˄X=1ˈ2ˈ3ˈ4,5˅
49.2ft
49.2ft
H1
49.2ft
49.2ft
H3
24.6ft
24.6ft
H2
Outdoor unit at
upper
Outdoor unit at
lower
Height difference between indoor
units (m)
Outdoor unit
Indoor unit
Height difference between
indoor units H2
Height difference between indoor unit and outdoor unit H1
Height difference
between outdoor
unit and indoor unit
Fitting Pipe
L1 +L2 +…+L M(M İ5)
Equivalent length of the farthest fitting pipe Lx
L1
L2
a
b
Indoor unit
L3
L4
L5
c
d
e
Fig 8
Total Pipe1/4 x 0.23 + Total Pipe3/8 x 0.58 ¨C 31 oz
If the calculation results in a negative number no addition refrigerant is required.
The maximum additional refrigerant is 28.2 oz regardless of the calculation
12
Specifications are subject to change without notice.
4.2.3 Installation of the Refrigerant Pipe Protection Layer
The refrigerant refrigerant pipe should be insulated by the insulating material and plastic tape to prevent
condensation and water leakage.
The joints of the indoor unit should be wrapped with the insulating material.Ensure there is no gap on the joint
of the indoor unit, as shown in Fig.9.
The thermal insulating layer is required to be wrapped at this part.
Thermal insulating pipe
No gap
Fig 9
After the pipe is protected, do not bend it to form a small angle; otherwise it will crack or
break.
(3)Wrap the Pipe with Tape˖
a. Bundle the refrigerant pipe and electric wire together with tape, and separate them from the drain pipe to
prevent the condensate water from overflowing.
b. Wrap the pipe from the bottom of the outdoor unit to the top of the pipe where it enters the wall. During the
wrapping, the later circle should cover half of the former one.
c. Fix the wrapped pipe on the wall with clamps.
1) Do not wrap the pipe too tight; otherwise the insulation effect would be weakened.Ensure
drain hose is separated from the pipe.
2) Next, fill the hole on the wall with sealing material to prevent wind and rain from entering the room.
4.2.4 Support and protection for the pipeline
Support should be made for hanging the connection pipe. The distance between each support can not exceed 3.3 ft (1m).
13
Specifications are subject to change without notice.
4.3 Air Purging and Refrigerant Charge
4.3.1 Air purging
(1) The refrigerant in the outdoor unit was charged before shipment. Additional refrigerant needs to
be charged into the refrigerant pipe during the field installation.
(2) Ensure the outdoor unit's liquid and gas valves are closed completely.
(3) As shown in the following figure (Fig.10), expel the gas inside the indoor unit and the refrigerant pipe with the
vacuum pump.
low side
high side
"HI"Knob
"LO"Knob
liquid valve
Vacuum pump
Connection hose
Gas valve
Fig 10
(4) When the compressor is not running, charge the R410A refrigerant into the refrigerant pipe from the liquid
valve of the outdoor unit (do not charge from the gas valve).
4.3.2 Additional refrigerant charging
(1) Refrigerant Charge in the Outdoor Unit before Shipment
NOTICE
1) The outdoor unit has been charged with refrigerant prior to delivery. The refrigerant charge is not included and is
an additional charge for the indoor unit and the refrigerant pipe.
2) The amount of the additional refrigerant charge depends on the diameter and length of the liquid refrigerant
pipe which is determined by the actual yield installation requirement.
3) Record the additional refrigerant charge for future maintenance.
(2) Calculation of the Additional Refrigerant Charge
Additional Refrigerant Charge=
›Length of Liquid Pipe¶0.375×54+›Length of Liquid Pipe¶0.25×22)-880
The largest additional refrigerant charge value is 800g.This means if the calculated value exceeds 800g, the
additional refrigerant charge takes 800g, while the calculated value takes less than 800g, the additional refrigerant charge
takes the calculated value.
14
Specifications are subject to change without notice.
4.4 Electric Wiring
4.4.1 Wiring precautions
(1) The installation must be done in accordance with the national wiring regulations.
(2) The electric installation should be
by technician instructed the local laws, regulations
and this manual.
(3) The ground should be firm and thegroundshould be connected to the dedicated device of the building
by the technician.The breaker coupled with the leakage current protection switch must be equipped and have
enough capacity in both the magnetic and thermal tripping functions in case of the short circuit and overload.
Table 8
!!
Warning
Models
Power Supply
30K
36K
42K
208/230V~60Hz
208/230V~60Hz
208/230V~60Hz
Capacity of the breaker A
30
30
30
GWHD(30)ND3EO
OUTDOOR UNIT
XT
L1 L2
N( 1) 2
GND
L1 L2
PE
3
3
N( 1) 2
GND
N( 1) 2
GND
POWER
3
PE
INDOORUNIT A
3
PE
GND
INDOORUNIT B
N( 1) 2
3
N( 1) 2
GND
N( 1) 2
GND
XT 4
XT3
XT2
XT1
GND
3
N( 1) 2
3
PE
GND
PE
GND
3
N(1 ) 2
GND
INDOORUNIT D
INDOORUNIT C
Fig 11
GWHD(36)ND3EO、GWHD(42)ND3EO
OUTDOOR UNIT
XT
L1 L2
N( 1) 2
GND
L1 L2 GND
POWER
3
PE
N( 1) 2
N( 1) 2
GND
3
GND
INDOORUNIT A
3
PE
N( 1) 2
GND
N( 1) 2
3
GND
INDOORUNIT B
N( 1) 2
3
PE
GND
N( 1) 2
3
N( 1) 2
GND
INDOORUNIT C
N( 1) 2
3
PE
GND
3
GND
INDOORUNIT D
Fig 12
15
XT5
XT4
XT3
XT2
XT1
Specifications are subject to change without notice.
3
PE
N( 1) 2
GND
3
GND
INDOORUNIT E
PE
4.4.2 Grounding Requirements
(1) The air conditioner is classified as a Class I appliance, so its grounding must be reliable.
(2) The yellow-green line of the air conditioner is the ground and can not be used for any other purpose, cut off or
fixed by the tapping screw; otherwise it would cause an electric shock.
(3) A reliable ground terminal should be provided and the ground wire can not be connected to any of the following
items:
ķRunning water pipe ĸCoal gas pipe ĹSewage pipe ĺOther places where the professional personnel
think unreliable.
4.4.3 Electrical Cable Connection
1) A mistake connecting the line will result in a malfunction. After the electrical wiring is working, ensure
the wire between the connection place and the fixed place has a certain amount of space.
2) The connection piping and connection line of each indoor unit should connect well according to the instruction.
3) The electric installation should be carried out by a technician instructed in the local laws, regulations and
this manual.
4) The installation location should be dry, shielded from direct sunlight or strong winds.
5) Install a breaker in the circuit that can shut off the system's main power supply. Also install an breaker
coupled with the leakage current protection switch must be equipped.
4.4.4 Wiring of the Power Wire
(1). Open the side plate.
(2). Connect the power wire to terminals ĀL1ā, ĀL2āand the grounding screw. Next, connect the wiring
terminals ĀN(1),2,3ā of the indoor unit to the corresponding outdoor unit terminals.
(3). Fix the power wire with wire clips.
(4). Place the power wire through the rubber ring.
If the supply wire is damaged, it must be replaced by the manufacturer or its service agent or a similarly
qualified person to avoid a hazard.
16
Specifications are subject to change without notice.
5 Troubleshooting
1) In the event of abnormal conditions (for example, a foul smell), shut off the main power supply immediately and
contact your Service Center.Operating under abnormal conditions would damage the
air conditioning unit and would cause electric shock or a fire hazard.
2) Do not attempt to repair the air conditioning.Contact a professionally skilled technician at the
appointed service center. An incorrect repair would cause electric shock or a fire hazard.
Check before Contacting Service Center.
Check Items
Has the unit been secured firmly?
Have you done the gas leakage test?
Does the unit have proper thermal insulation?
Does the unit drain well?
Is the voltage in accordance with the
rated voltage specified on the nameplate?
Is the electric wiring and piping
connection installed correctly and
securely?
Has the unit been grounded securely?
Is the power cord specified?
Has the inlet and outlet been blocked?
Table 9
Conditions Might Happen
The unit may drop, shake or emit noise.
It may cause insufficient cooling/heating
capacity.
It may cause condensation and dripping.
It may cause condensation and dripping.
It may cause a malfunction or damage the part.
Check
It may cause malfunction or damage the part.
It may cause electrical leakage.
It may cause malfunction or damage the part.
It may cause insufficient cooling/heating
capacity.
NOTICE!
If the air conditioner still runs abnormally after the above checks, please contact a
maintenance serviceman at the local appointed service center and provide a description of the error
as well as the model of the unit.
17
Specifications are subject to change without notice.
6 The conditions listed below are not classified into errors.
The unit does not run
The unit blows out mist
The unit generates noise
The unit blows out dust.
The unit emits odors.
Table 10
Conditions
When restart the unit soon after it is
stopped.
Causes
The overload protection switch of the unit let the
startup delayed for three minutes.
The unit will stand by for approximate one
As soon as power is on.
minute.
When the cooling operation starts.
The hi-humidity air indoor is cooled quickly.
The unit “clatters” as soon as it It is the sound generated during the initialization
of the electronic expansion valve.
starts running.
The unit “swishes ” during the It is the sound when the refrigerant gas runs inside
the unit.
cooling operation.
The unit “swishes ” when it is It is the sound when the refrigerant gas stops
running.
started or stopped.
The unit “swishes” when it is in It is the sound when the draining system is
operating.
and after the running.
It is the sound of frication generated by the skin
The unit “squeaks” when it is in
plate etc which swells due to the temperature
and after the running.
change.
When the unit restarts after it is not
The dust inside the unit is blown out again.
used for a long time.
When the unit is running.
The odors absorbed in are blown out again.
NOTICE!
If problem can not be solved after checking the above items, please contact C&H service center and show
phenomena and models.
Following circumstance are not malfunction
Table 11
Malfunction
Reason
Unit doesn’t run
When unit is started
Overload protection switch makes it run after 3 minutes
immediately after it is just
delay
turned off
When power is turned on
Standby operating for about 1 minute
Mist comes from the
Under cooling
Indoor high humidity air is cooled rapidly
unit
Noise is emitted
Slight cracking sound is heard
It is noise when electronic expansion valve initialization
when just turned on
That's sound for gas refrigerant flowing in unit
The unit blows out
duct
The unit emits odor
There is consecutive sound
when cooling
There is sound when unit starts
or stops
There is slight and consecutive
sound when unit is running or
after running
Cracking sound is heard when
unit is operating and after
operating
When unit runs after no
operation for a long period
Operating
Indoor unit still runs
after switch off
After every indoor unit receive
"stop" signal, fan will keep
Indoor fan motor will keep running 20-70s so as to take
good use of excess cooling and heating and prepare for
That's sound for gas refrigerant stops to flow
That's sound for operation of drainage system
That’s sound caused by expansion of panel and other
parts due to temperature change
Dust in indoor unit is blew out
The room odor absorbed by the unit is blew out again
15
18
Specifications are subject to change without notice.
Mode conflict
19
running
next operation
COOL or HEAT mode can not
be operated
When the indoor operating mode conflicts with that of
outdoor unit, indoor fault indicator will flash and conflict
will be shown on the wired controller after 5 minutes.
Indoor unit stops to run and meanwhile change outdoor
operating mode as the same as that of indoor unit, then
the unit will go back to normal. COOL mode doesn't
conflict with DRY mode. FAN mode doesn't conflict with
any mode.
Specifications are subject to change without notice.
7 Troubleshooting
The error code will be displayed on the wired controller and the main board of the outdoor unit
The meaning of each error, as shown in table 13.
Table 12
The indicator display
Name of malfunction
Yellow light
Red light
Green light
Compressor runs
Flash once
Defrost
Flash twice
Anti-freezing protection
Flash 3 times
IPM protection
Flash 4 times
AC over-current protection
Flash 5 times
Over-burden protection
Flash 6 times
Compressor exhaust high temperature protection
Flash 7 times
Compressor overload protection
Flash 8 times
Power protection
Flash 9 times
EEPROM reads and write protection
Flash 11 times
Low PN voltage protection
Flash 12 times
Over voltage protection for PN
Flash 13 times
PFC protection
Flash 14 times
PFC module temperature protection
Flash 15 times
Low pressure protection
Flash 17 times
High pressure protection
Flash 18 times
Limit/decline frequency(electric current)
Flash 1 times
Frequency limit（exhaust）
Flash 2 times
Frequency limit（Over-burden）
Flash 3 times
Outdoor ambient sensor malfunction
Flash 6 times
Outdoor tube sensor malfunction
Flash 5 times
Exhaust sensor malfunction
Flash 7 times
Attain the temperature of switch on
Flash 8 times
Frequency limit(power)
Flash 13 times
Outdoor fan malfunction
Flash 14 times
Frequency limit(PFC module temperature)
Flash 15 times
PFC module sensor malfunction
Flash 16 times
Liquid pipe temperature sensor malfunction of A
Flash 17 times
Gas pipe temperature sensor malfunction of A
Flash 18 times
Liquid pipe temperature sensor malfunction of B
Flash 19 times
Gas pipe temperature sensor malfunction of B
Flash 20 times
Liquid pipe temperature sensor malfunction of C
Flash 21 times
Gas pipe temperature sensor malfunction of C
Flash 22 times
Liquid pipe temperature sensor malfunction of D
Flash 23 times
Gas pipe temperature sensor malfunction of D
Flash 24 times
Liquid pipe temperature sensor malfunction of E
Flash 25 times
Gas pipe temperature sensor malfunction of E
Flash 26 times
Exit of the condenser tube sensor malfunction
Flash 27 times
Flash n times（n=indoor
Correspondence is normal
unit number）
Often bright
Communication failure between indoor unit and
（indoor unit all
outdoor unit
Communication failure）
20
Specifications are subject to change without notice.
7 Maintenance
A regular inspection, maintenance and care should be performed by professional personnel, which will prolong the unit's
life span.
7.1 Outdoor heat exchanger
The outdoor heat exchanger should be cleaned once every two months. Use a vacuum cleaner with a nylon brush
to clean up dust and small particles on the surface of the heat exchanger. Blow away dust with compressed air, if available.
Never use water to wash the heat exchanger.
7.2 Drain Pipe
Regularly check if the drain pipe is clogged to drain condensate smoothly.
7.3 Notice before Seasonal Use
(1) Check if the inlet/outlet of the indoor/outdoor unit is clogged.
(2) Check if the ground wire is grounded correctly.
(3) Check if the battery of remote wireless controller has been replaced.
(4) Check if the filter screen has been set correctly.
(5) After a long period of nonuse, open the main power switch 8 hours before re-operating the unit to
preheat the compressor crankcase.
(6) Check if the outdoor unit is installed securely. If there is anything abnormal, contact the
appointed service center.
7.4 Maintenance after Seasonal Use
(1) Cut off the main power supply to the unit.
(2) Clean the filter screen and the indoor and outdoor units.
(3) Clean the dust and small particles on the indoor and outdoor units.
(4) In the event of rusting, use anti-rust paint to stop t h e spreading of rust.
7.5 Parts Replacement
Purchase parts from an appointed service center or dealer if necessary.
NOTICE!
During the airtight and leakage test, never mix oxygen, ethyne and other dangerous gas into the refrigeration
circuit. In case of hazard, it is better to use nitrogen or refrigerant to perform the test.
21
Specifications are subject to change without notice.
www.cooperandhunter.us
MANUFACTURER: GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI
Add: West Jinji Rd, Qianshan, Zhuhai, Guangdong, China, 519070