Gree XK55 User manual

Owner's Manual
Original Instructions
Wired Controller XK55

To Users
Thank you for selecting Gree’s product. Please read this instruction manual
carefully before installing and using the product, so as to master and correctly use the
product. In order to guide you to correctly install and use our product and achieve
expected operating effect, we hereby instruct as below:
(1) This appliance is not intended for use by persons (including children) with
reduced physical, sensory or mental capabilities, or lack of experience and
knowledge, unless they have been given supervision or instruction
concerning use of the appliance by a person responsibility for their safety.
Children should be supervised to ensure that they do not play with the
appliance.
(2) This instruction manual is a universal manual, some functions are only
applicable to particular product. All the illustrations and information in the
instruction manual are only for reference, and control interface should be
subject to actual operation.
(3) In order to make the product better, we will continuously conduct
improvement and innovation. We have the right to make necessary revision
to the product from time to time due to the reason of sales or production,
and reserve the right to revise the contents without further notice.
(4) For personal injury or property loss and damage caused by improper
operation such as improper installation and debugging, unnecessary
maintenance, violation of related national laws and rules and industrial
standard, and violation of this instruction manual, etc., we will bear no
liability.

Contents
1 Safety Notices (Please be sure to abide them) .................1
2 Operation Notices................................................................2
3 Display Instructions ............................................................3
3.1 Appearance and Display ......................................................... 3
3.2 Icons ....................................................................................... 4
4 Wired Controller Installation and Commissioning............6
4.1 Wired Controller Installation .................................................... 8
4.2 Commissioning ..................................................................... 14
5 Operation Instructions ......................................................25
5.1 Overview............................................................................... 25
5.2 Pages Description................................................................. 26
6 Special Functions ..............................................................35
6.1 Remote Shielding.................................................................. 35
6.2 Access Display...................................................................... 35
7 Error Display ......................................................................36

7.1 Table of Error Codes for Outdoor Unit ................................... 36
7.2 Table of Error Codes for Indoor Unit...................................... 39
7.3 Table of Debugging Codes .................................................... 41
7.4 Table of Status Codes ........................................................... 43

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1 Safety Notices (Please be sure to abide them)
WARNING: If not abide them strictly, it may cause severe damage to the
unit or the people.
NOTE: If not abide them strictly, it may cause slight or medium damage to
the unit or the people.
This sign indicates that the items operation must be prohibited. Improper
operation may cause severe damage or death to people.
This sign indicates that the items must be observed. Improper operation
may cause damage to people or property.
WARNING!
This product can’t be installed at corrosive, inflammable or explosive
environment or the place with special requirements, such as kitchen. Otherwise,
it will affect the normal operation or shorten the service life of the unit, or even
cause fire hazard or serious injury. As for the above special places, please
adopt special air conditioner with anti-corrosive or anti-explosion function.

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2 Operation Notices
The power supply for all indoor units must be unified.
Prohibit installing the wired controller at wet or sunshine places.
Do not knock, throw or frequently disassemble the wired controller.
Do not operate the wired controller with wet hands.
In one system network, you must set one indoor unit as the master indoor unit,
Other indoor units are slave indoor units.
The operation mode of the system is basing on that of master indoor unit.
Master indoor unit can switch to any modes, while slave unit can’t switch to the
mode that is conflicting with master indoor unit.
When master indoor unit changes mode which cause operation mode of slave
indoor unit conflicts with that of system, the operation mode of slave unit will
switch to the operate mode of system automatically.
When two wired controllers control one (or more) indoor unit(s), the address of
wired controller should be different.
Functions with “*” are optional for indoor units. If a function is not included in an
indoor unit, wired controller can’t set the function, or setting of this function is
invalid to the indoor unit.

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3 Display Instructions
3.1 Appearance and Display
Fig 3.1 Appearance of wired controller

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Table 3.1 Appearance description
No. Name Description
1 Remote control
signal receiver
It is used to receive the remote control signal.
2 LED indicator Red indicates unit off; white indicates unit on.
3 Temperature
adjustment
It is used to adjust the set temperature.
4 On/off It is used to switch the unit on or off.
5 Touch button Short-press this button to turn on/off the backlight; long-press for 5
seconds to reset the touch screen.
6 Mode It is used to switch the operation mode of the air conditioner.
7 Fan speed It is used to change the fan speed of the air conditioner.
8 Up & down swing It is used to turn on/off the up & down swing.
9 Menu It is used to enter the next page.
10 Temperature display It displays the set temperature.
11 Status It displays the time and the enabled functions.
3.2 Icons
Table 3.2 Icons in the status bar
Modes (The selectable modes are subject to the working indoor unit.)
Icon Meaning Icon Meaning
Auto* Cooling
Drying Fan only
Heating Floor heating*
3D heating Heat supply*

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Functions, status
Icon Meaning Icon Meaning
Air exchange* Access card removed
Filter cleaning Malfunction
Auxiliary heating* Light
Healthy* Left & right swing
Absence Mute
Power-off memory Master indoor unit
Energy-saving Shield
Subsidiary wired controller Sleep
Timer Up & down swing
X-fan Group control
Save Defrosting

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4 Wired Controller Installation and Commissioning
Unit: mm
Fig 4.1 Dimensions of wired controller

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Fig 4.2 Parts of wired controller
No.
①②③④
Name Wired controller
panel
Screw M4×25 Wired controller
base
Wiring box that is mounted on
the wall
QTY 1 pc 2 pc 1 pc Prepared by the user

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4.1 Wired Controller Installation
4.1.1 Selection requirements for communication cable
Fig 4.3 Length of communication cable
Wire material
type
Total length of
communication line
between indoor unit
and wired controller L
(m/feet)
Wire size
(mm2/AWG)
Material
standard Remarks
Light/
Ordinary
Polyvinyl chloride
sheathed cord.
(60227 IEC 52
/60227 IEC 53)
L≤100m
(L≤328feet)
2×0.75
mm2~2×
1.25 mm2
(2×AWG18~
2×AWG16)
IEC
60227-5:20
07
(1) Total length of
communication line
can't exceed 100m
(328feet).
(2) The cord shall be
Circular cord (the
cores shall be twisted
together).
(3) If unit is installed in
places with intense
magnetic field or
strong interference, it
is necessary to use
shielded wire.

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NOTES:
①If the air conditioners are installed in a place with strong magnetic
interference, the communication cable of wired controller must be the
shielded twisted pairs.
②The communication cable of the wired controller must be selected
according to the requirements in this manual. It is strictly prohibited to
choose the communication cable that does not meet the requirements in
this manual.
4.1.2 Installation requirements
(1) Never install the wired controller in a humid place.
(2) Never install the wired controller under direct sunlight.
(3) Never install the wired control near a hot object or in a place prone to
splashing water.
(4) Never install the wired controller in a place facing the window to avoid the
unit from working abnormally due to the interference of the neighboring
wired controller of the same model.
4.1.3 Wiring requirements
There are two methods to connect the wired controller to the indoor units.

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Fig 4.4 One wired controller controls one indoor unit

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Fig 4.5 One wired controller controls multiple indoor units
Wiring instructions:
(1) When one wired controller is to control multiple indoor units, it can be
connected to any one indoor unit, but the connected indoor units must be
the same series indoor units. The wired controller can control a maximum
of 16 indoor units, which must be within the same network. The wired
controller should be configured with the number of indoor units in group
control. Please refer to section 4.2.2 for the configuration method.
(2) When one wired controller is to control multiple indoor units, the settings of
the units under control should be the same.
(3) The wiring network of the wired controller and indoor units must be in
accordance with Fig 4.4 or Fig 4.5.

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NOTES:
①The series of indoor units include:
②Multi VRF indoor units;
③Fresh air indoor units;
④Dual heat sources indoor units;
⑤Packaged units; indoor units except fresh air indoor units, dual heat
sources indoor units and packaged units are classified as multi VRF units.
4.1.4 Installation
Fig 4.6 Diagram of wired controller installation

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Fig 4.6 shows the simple way to install the wired controller. Please pay attention
to the following matters:
①Before installing the product, cut off the power supply of the indoor unit.
Power must be off during the whole installation process.
②Pull out the two-core twisted-pair wire in the wall mounting hole, and pass
this wire through the wiring hole at the back of the base of the wired
controller.
③Attach the base of the wired controller to the wall, and fix the base with the
wall mounting hole with screws M4 × 25.
④Connect the two-core twisted-pair wire that passes through to the H1 and
H2 terminals, and tighten the screws.
⑤Fasten the wired controller panel and the wired controller base together to
complete the installation.
4.1.5 Removal
Fig 4.7 Diagram of wired controller removal

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NOTE:
Please use a flat-blade screwdriver when removing the wired controller, so as to
pry open the panel and base of the wired controller.
4.2 Commissioning
4.2.1 Parameter inquiry
You can view the unit's parameters whether the unit is on or off.
Press "Menu" on the home page and then select "Parameter Inquiry" to enter the
page of parameter inquiry, as shown below:
Fig 4.8 List of parameter inquiry
Press to enter the page of the corresponding inquiry to view the details.
Press to return to the previous page.

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4.2.1.1 System parameter inquiry
Fig 4.9 System parameter inquiry
Table 4.1 List of system parameter inquiry
Parameter name Display scope Parameter name Display scope
Number of indoor units in
group control
1~16 Project code of the
master indoor unit
1~255
The time for filter cleaning
reminding
4~416 days Number of indoor units
in CAN1 network
1~100
CAN2 network number 1~255 Upper limit of outdoor
unit capacity ratio
135%, 150%, 110%
Cooling and heating
functions of the entire unit
Cooling only,
heating only,
cooling and heating,
fan only
Address of wired
controller 1, 2

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4.2.1.2 Indoor unit parameter inquiry
Fig 4.10 Indoor unit parameter inquiry
It is used to view the parameters of the corresponding online indoor unit.
Press to return to the previous page;
Press to enter the page of indoor unit selection and select an indoor
unit.
Table 4.2 List of indoor unit parameter inquiry
Parameter name Display scope Parameter name Display scope
Project code of indoor
unit, location of the faulty
indoor unit
1~255 Indoor unit capacity Actual value
Operation priority Yes, no
Temperature of indoor
unit ambient
temperature sensor
-9~99℃