Gree FGR25Pd/DNa-X, FGR30Pd/DNa-X, FGR20Pd/DNa-X, FGR40Pd/D(2)Na-X Service Manual

P Contents

PRODUCT.........................................................................................................................1

1 Product List...........................................................................................................................2

2 Nomenclature........................................................................................................................2

3 Specifications.......................................................................................................................3

CONTROL.........................................................................................................................5

1 Wired Controller....................................................................................................................6

2 Remote Controller YAP1F...................................................................................................9

3 Introduction to IDU Functions..........................................................................................10

4 Monitoring Software...........................................................................................................20

INSTALLATION..............................................................................................................63

1 Engineering Installation Preparation and Notice..........................................................64

2 Installation Materials Selection........................................................................................65

3 Installation of Indoor Unit..................................................................................................67

4 Installation of outdoor unit...............................................................................................71

5 Installation of drain pipe....................................................................................................73

6 Electrical Installation.........................................................................................................76

DEBUGGING & MAINTENANCE..................................................................................78

1 Debugging of Unit..............................................................................................................79

2 Malfunction List..................................................................................................................83

3 Troubleshooting..................................................................................................................85

4 After-sales Emergency Masures....................................................................................104

5 Wiring Diagram.................................................................................................................105

6 Disassembly And Assembly Procedure Of Main Parts..............................................107

7 Exploded Views And Part List........................................................................................109

Duct type split Air conditioner Inverter Series

PRODUCT

Duct type split Air conditioner Inverter Series

1 Product List

Cooling

Capacity

Model

kW kW

FGR20Pd/DNa-X 20 22

FGR25Pd/DNa-X 25 27.5

FGR30Pd/DNa-X 30 33

Heating

Capacity

3N/380-41

5V/50Hz/

Power

Supply

60Hz

Refrigerant

R410a

Appearance

Outdoor Indoor

FGR40Pd/D(2)Na-X 40 43

2 Nomenclature

Duct type split Air conditioner Inverter Series

NO. Description Options

1 Ducted Type Air Conditioner -

Cooling only type-omitted

2 Unit type

Auxiliary hot water plate and pipe type-W

3 Cooling capacity Nominal cooling capacity (kW)

Heat pump

4 Frequency conversion system

5 Design No. Arranged based on A, B, C, D,and so on

6 Refrigerant

Others to be applied for when they are used

7 Power type

(The unit to be exported must be expressed)

8 Indoor and outdoor unit code

Fixed frequency-omitted

Frequency conversion-Pd

R22-omitted

R407-N

R410a-Na

380-415V 3Ph～,50/60Hz-X

Outdoor unit-(O)

Indoor unit-(I)

The entire unit is not expressed.

3 Specifications

Model Heat pump FGR20Pd/DNa-X FGR25Pd/DNa-X

Capacity

Power input

Current input

Indoor unit

Outdoor unit

Connection

pipe

Loading quantity

EER/COP W/W 2.55/3.25 2.65/3.10

Power supply Ph/V/Hz 3N/380-415/(50/60) 3N/380-415/(50/60)

Refrigerant charge volume kg 6.4 8.0

Dimension

(W×D×H)

Net Weight/Gross weight kg 82/104 99/134

Dimension

(W×D×H)

Net Weight/Gross weight kg

diameter

Max. distance

Cooling kW 20 25

Heating kW 22 27.5

Cooling kW 7.8 9.4

Heating kW 6.8 8.9

Cooling A 16.5 18.9

Heating A 14.4 17.2

Airflow volume

ESP

Sound pressure level dB(A) 52 53

Sound pressure level dB(A) 62 63

Outer

20'GP/40'GP/40'HQ set 12/24/24 10/20/22

Rated Pa 120 120

Range Pa 0-250 0-250

Outline mm 1460×790×365 1690×870×440

Package mm 1575×880×385 1785×985×450

Outline mm 940×320×1430 940×460×1615

Package mm 1020×420×1460 1020×560×1645

Liquid Inch(mm) Φ3/8 Φ3/8

Gas Inch(mm) Φ3/4 Φ7/8

Height mm 30 30

Length mm 50 50

CFM

m3/h

2178

3700

120/130

2472

4200

146/162

Duct type split Air conditioner Inverter Series

Model Heat pump FGR30Pd/DNa-X FGR40Pd/D(2)Na-X

Capacity

EER/COP W/W 2.65/3.20 2.60/3.10

Power input

Current input

Refrigerant charge volume kg 9.5 6.4×2

Indoor unit

Outdoor unit

Cooling kW 30 40

Heating kW 33 43

Power supply Ph/V/Hz 3N/380-415/(50/60) 3N/380-415/(50/60)

Cooling kW 11.3 15.4

Heating kW 10.3 13.9

Cooling A 22.7 27.8

Heating A 20.7 26.4

Airflow volume

ESP

Sound pressure level dB(A) 55 56

Dimension

(W×D×H)

Net Weight/Gross weight kg 105/145

Sound pressure level dB(A) 65 66

Dimension

(W×D×H)

Net Weight/Gross weight kg 175/190

Rated Pa 120 120

Range Pa 0-250 0-250

Outline mm 1690×870×440 1680X900X650

Package mm 1785×985×450 1800X1020X670

Outline mm 940×460×1615 940×320×1430

Package mm 1020×560×1645 1020×420×1460

CFM 3060 4120

m3/h 5200 7000

165/210

(120/130) X2

Outer

Connection

pipe

Loading quantity

Note:

Specifications may be changed due to product improvement. Please refer to nameplates of the units.

◆

Noise data are collected from a semi-anechoic room. Decibels may be slightly higher in actual operation due to

◆

environmental change.

Above parameters are tested under the condition:high fan speed

◆

Cooling : Indoor air temperature 27°C DB/19°C WB, Outdoor air temperature 35°C DB/24°C WB;

◆

Heating : Indoor air temperature 20°C DB/15°C WB, Outdoor air temperature 7°C DB/6°C WB.

◆

diameter

Max.

distance

20'GP/40'GP/40'HQ set 10/20/22 7/18/18

Liquid Inch(mm) Φ1/2 Φ3/8

Gas Inch(mm) Φ1 Φ3/4

Height mm 30 30

Length mm 50 50

Duct type split Air conditioner Inverter Series

CONTROL

Duct type split Air conditioner Inverter Series

1 Wired Controller

1.1 Control panel

Fig1.1 Appearance of wired controller

Fig1.2 LED graphics of wired controller

Table 1.1 LED display instruction

No. Symbols Instructions

Up and down swing function

Left and right swing function

It's valid under Save mode and displays during setting process. Temperature lower limit for Cooling: Limit the minimum temperature value under Cooling or Dry mode. Temperature upper limit for Heating: Limit the maximum temperature value under Heating, Space Heating or 3D Heating mode.

Auto mode (Under Auto mode, the indoor units will automatically select their operating mode as per the temperature change so as to make the ambient comfortable.)

It shows the setting temperature value(In case the wired controller is controlling a Fresh Air Indoor Unit, then the temperature zone will display FAP)

Cooling mode

Dry mode

Fan mode

Duct type split Air conditioner Inverter Series

No. Symbols Instructions

Heating mode

When inquiring or setting project number of indoor unit, it displays "NO." icon

Floor Heating mode (When Heating and Floor Heating simultaneously shows up, it indicates 3D Heating is activated.)

Display "SET" icon under parameter setting interface

Space Heating mode

Display "CHECK" icon under parameter view interface

Outdoor unit operates under Save mode/upper limit of system capacitor less 100%/remote Save status

Sleep status

Current set fan speed (including auto, low speed, medium-low speed, medium speed, medium-high speed, high speed and turbo seven status)

Air status, Indoor unit optional function

Remind to clean the filter

Quiet status (including Quiet and Auto Quiet two status)

Allow auxiliary electric heating On icon

Light On/Off function

X-fan function

Health function, Indoor unit optional function

Reserved function

Out function

Outdoor unit defrosting status

Gate-control function

Shielding status

Child Lock status

One wired controller controls multiple indoor units

Save status of indoor unit

It indicates the current wired controller is the slave wired controller (address of wired controller is 02)

Memory status (The indoor unit resumes the original setting state after power failure and then power recovery)

Note: When wired controller is connected with different indoor units, some functions will be different

Invalid operation

Current wired controller connects master indoor unit

Timer zone:Display system clock and timer status

1.2 Installation and removal

1.2.1 Installation dimensions

Duct type split Air conditioner Inverter Series

1.2.2 Installation method

Fig1.3 Installation dimensions

Fig1.4 Installation of Wired Controller

Above is a simple installation method of wired controller. Please pay attention to the following:

Before installation, disconnect power of the indoor unit. Do not operate when power is connected.

◆

Pull out the 2-core twisted pair cable from the installation hole on the wall and lead it through the hole

◆

on the back plate of wired controller.

Place the wired controller on wall and secure its back plate on

◆

ect the 2-core twisted pair cable to terminal H1 and termi

Conn

◆

Stick the cable in the slot that is left of the terminals and buc

◆

back plate.

Note:

caliber of the communication cord is too large, which causes difficulty in leading or sticking the cord

according to above point 2 and point 5, strip some of the sheath of the communication cable to meet the

installation requirement.

wall with screw M4X25.

nal H2. Tighten up the screws.

kle the wired

controller’s panel with its

1.2.3 Removal method

Duct type split Air conditioner Inverter Series

Fig1.5 Removal of Wired Controller

1.2.4 Connection of communication cord

Fig1.6 One wired controller controls one indoor unit

2 Remote Controller YAP1F

Duct type split Air conditioner Inverter Series

Button name and function introduction

No. Button name Function

1 ON/OFF Turn on or turn off the unit

2 TURBO Set turbo function

3 MODE Set operation mode

4 Set up&down swing status

5 I FEEL Set I FEEL function

6 TEMP Switch temperature displaying type on the unit’s display

7 Set health function and air function

8 LIGHT Set light function

9 X-FAN Set X-FAN function

10 SLEEP Set sleep function

11 CLOCK Set clock of the system

12 TOFF Set timer off function

13 TON Set timer on function

14 Set left&right swing status

15 FAN Set fan speed

3 Introduction to IDU Functions

Indoor unit functions cover user operation functions and engineering application functions. For user

operation functions, refer to wired controller and remote controller.

Engineering application functions include:

SN Function Name

1 User parameter query

Duct type split Air conditioner Inverter Series

2 User parameter settings 3 Engineering parameter query 4 Engineering parameter settings

Engineering application functions can be operated through the IDU wired controller(XK46).

3.1 User Parameter Query

User parameters can be queried in power-on or power-off status.

(1) Press and hold the “FUNCTION” button for five seconds to enter the user parameter query interface.

The temperature area displays “C00” and “V

Select a parameter code by pressing “ ” or “ ”

(2)

Press the “ENTER/CANCEL” button to return to the upper-level menu till quitting parameter query.

(3)

iew” is on.

The user parameter query list is as follows:

Parameter

Code

C00

C06

C07

C08

C09

C12

C17

Parameter Name

Parameter

setting ingress

Preferential

operation query

Indoor environment temperature

query

Prompt time

query for air filter

cleaning

Wired controller

adress query

Outdoor environment temperature

query

Indoor relative humidity query

Parameter

Range

Display mode:  Timer area: displays the project numbe

00: common

operation

01:

preferential

operation

-9 to 99

4-416: days Timer area: displays the prompt time for air filter cleaning.

01, 02

-9 to 99

20-90

current IDU. Note: If the current HBS network consists of multiple IDUs, only the IDU that has the minimum project

number is displayed. Operation method: In “C06” status, press the “MODE” button to enter the preferential operation query interface. Press “ ” or “ ” to switch the IDU SN. Display mode: Temperature area: displays the project number of the current IDU. Timer area: displays the preferential operation setting value of the current IDU. Operation me In “C07” status, press the “MODE” button to enter the indoor environment temperature query interface. Press "

" or " " to switch the IDU SN. Display mode: Temperature area: displays the project number of the current IDU. Timer area: displays the temperature value of the indoor environment temperature sensor after replenishment.

Timer area: displays the adress of the current wired controller.

Timer area: displays the temperature value of the environment temperature sensor of the master ODU.

Operation method: In “C17” status, press the “MODE” button to enter the indoor relative humidity query interface. Press “▲” or “▼” to switch the IDU SN. Display mode: Temperature area: displays the relative humidity value. Timer area: displays the project number of IDU (project numberes are arranged from small to large). If the HBS network consists of only one IDU, the timer area directly displays the IDU relative humidity value in the “C17” interface.

thod:

View Method

r of the

Duct type split Air conditioner Inverter Series

Note:

In parameter query status, "FAN", “TIMER”, "SLEEP", and "SWING" are invalid. By pressing the

“ON/OFF” button, users can return to the main interface but not power on/off the unit.

3.2 User Parameter Settings

User parameters can be set in power-on or power-off status.

(1) Press and hold the “FUNCTION” button for five seconds. The temperature area displays “C00”.

Press and hold the “FUNCTION” button for another five seconds to enter the wired controller

parameter setting interface. The temperature area

displays “P00”.

(2) Select a parameter code by pressing “ ” or “ ”. Press the “MODE” button to switch to parameter

value settings. The parameter value blinks. Adjust the parameter value by pressing “ ” or “ ” and

then press the “ENTER/CANCEL”

(3)

Press the “ENTER/CANCEL” button to return to the upper-level menu till quitting parameter

button to complete settings.

settings.

(4) The user parameter setting list is as

Parameter

Code

P10

P11

P13

P30

Parameter

Name

Master IDU

settings

Infrared connection settings of

wired controller

Wired controller

address

settings

Static pressure

settings for

indoor fan

Parameter Range

00: does not change the

master/slave status of the

01: sets the current IDU

01: master wired

02: slave wired controller

Type 1: 03.04.05.06.07

01.02.03.04.05.06.07.08.

follows:

current IDU

to master IDU

00: disabled

01: enabled

controller

Type 2:

Default

Val ue

Remark

After the IDU connected with the current wired controller is successfully set to master IDU, "MASTER" on the wired controller is on.

This setting can only be enabled through the master wired controller.

When the infrared remote receiving function of the wired controller is disabled, neither the master nor slave wired controller can receive remote signals. The wired controllers can only be operated by pressing.

When two wired controllers simultaneously control one IDU, the two wired controllers should use different addresses. The slave wired controller (address: 02) does not have the unit parameter setting function except its own address settings.

After identifying the IDU type, the wired

controller only displays the available static pressure levels.

The static pressure levels fall into

1) levels

and nine levels for VRF IDUs. T

ired controller only displays t pressur identified IDU t

2) W w levels, the adj accord princi receiv control monitori rang

3)Duri setting val

e levels matched with t

ype.

hen the HBS network co

ith both five and nine static pr

wired controller displays ni

ustable static pressure leve

ing to the maximum co

ple. If the static pressure

ed by the IDU from the wi

ler, remote controller

ng system exceed the

e, the limit value prevai

ng power-on and synchroniza

ue of static pressure

five

he static

nsists of IDUs

essure

ntrol

levels

red

, or remote

setting

ls.

tion, the

levels is

Duct type split Air conditioner Inverter Series

Parameter

Code

P31

P33

P34

P37

P38

P43

P46

Parameter

Name

High-ceiling

installation

Timer function

settings

Repeating

validity for time-point

timing

Cooling setting

temperature in

automatic mode

Heating setting

temperature in

automatic mode

Preferential

operation

settings

Accumulated

time clearing for

air filter

cleaning

Parameter Range

00: standard-ceiling

installation height

01: high-ceiling

installation height

00: common timing

01: time-point timing

00: single timing

01: repeated everyday

17°C -30°C 25

16°C -29°C 20

00: common operation

01: preferential operation

00: not cleared

01: cleared

Default

Val ue

Remark

determined by settings of the IDU.

This setting is valid only when the timer function is set to time-point timing.

Cooling setting temperature – heating setting temperature ≥ 1. Note: The two settings are still valid in remote shielding status.

When power supply is insufficient, users are allowed to power on/off the IDU set with preferential operation and other IDUs are forcibly powered off. A fault code is displayed on the IDU that is forcibly powered off.

Note:

In parameter setting status, "FAN", “TIMER”, "SLEEP", and "SWING" are invalid. By pressing the

“ON/OFF” button, users can return to the main interface but not power on/off the unit.

3.3 Engineering Parameter Query

Engineering parameters can be queried in power-on or power-off status.

Press and hold the “FUNCTION” button for five seconds to enter the engineering parameter query

interface. The temperature area displays “C00” and “View” is on.

(1) Within five seconds after “C00” is displayed, continuously press the “MODE” button for three times in

an interval less than one second to enter engineering parameter query.

(2) Select a parameter code by pressing “ ” or “ ”

Press the “ENTER/CANCEL” button to return to the upper-level menu till quitting parameter query.

(3)

In the engineering parameter query interface, users can also query user parameters listed in Table 3.1.

The engineering parameter query list is as

Parameter

Code

C00

C02

Parameter Name

Parameter setting

ingress (default)

Indoor unit

capacity query

Parameter

Range

follows:

View Method

Display mode:

Timer area: displays the project number of the current IDU.

Note: If the current HBS network consists of multiple IDUs, only the IDU that has the minimum project number is displayed.

Operation method:

In “C02” status, press the “MODE” button to enter the preferential operation query interface. Press " " or " " to switch the project number of IDU.

Duct type split Air conditioner Inverter Series

Parameter

Code

C05

C10

C13

C14

Parameter Name

Historical fault

query ingress of

IDU

Static pressure

setting query of

ODU

Outdoor unit

network number

query

Temperature

query for

inlet-tube

temperature

sensor of IDU

Parameter

Range

Display mode:

Temperature area: displays the project number of the current IDU.

Timer area: displays the current IDU capacity/IDU capacity after adjustment.

Operation method:

1. In “C05” status, press the “MO fault quer

Five historical

faults

00: 0 Pa

20: 20 Pa

50: 50 Pa

82: 82 Pa

1-255 Timer area: displays the network number of the current ODU.

-9 to 99

numb of the current IDU. Press “ the “ENTER/CANCEL” button to return to the upper-level menu.

Display mode:

Temperature area: displays the fault SN and fault code.

Timer area: displays the project number of IDU.

Operation method:

In “C10” status, press the “MODE” button to enter static pressure setting query of ODU. Press " " or " " to switch the ODU address.

Display mode:

Temperature area: displays the address of the current ODU.

Timer area: displays the static pressure setting value.

peration method:

In “C14” status, press the “MODE” button to enter inlet-tube temperature sensor query of IDU. Press " " or " " to switch the IDU SN.

Display mode:

Temperature area: displays the project number of the current IDU.

Timer area: displays the temperature value.

If the HBS network consists of only one IDU, the timer area directly displays the temperature value in the “C14” interface.

No matter Fahrenheit or Centigrade remote signals are received, the temperature is displayed in Centigrade.

When the wired controller displays the inlet-tube temperature after receiving signals from the remote controller, the inlet-tube temperature of the IDU that has the minimum project number in the HBS network is displayed by default.

y interface. Press " " or " " to switch the proj

er of IDU. Press the “MODE” button to enter fault code quer

View Method

DE” button to enter the hist

” or “ ” to switch th

e fault SN. Press

orical

ect

Duct type split Air conditioner Inverter Series

Parameter

Code

C15

C16

Parameter Name

Temperature

query for outlet

temperature

sensor of IDU

Opening degrees

query of electronic

expansion valve

of IDU

Capacity

configuration ratio

upper-limit of

outdoor/IDU

Parameter

Range

-9 to 99

0-20

35: 135% 50: 150%

View Method

peration method:

In “C15” status, press the “MODE” button to enter outlet temperature sensor query of IDU. Press " " or " " to switch the IDU SN.

Display mode:

Temperature area: displays the project number of the current IDU.

Timer area: displays the temperature value.

If the HBS network consists of only one IDU, the timer area directly displays the temperature value in the "C14" interface.

No matter Fahrenheit or Centigrade remote signals are received, the temperature is displayed in Centigrade.

Operation method:

In “C16” status, press the “MODE” button to enter electronic expansion valve opening degree query of IDU. Press " " or " " to switch the IDU SN.

Display mode:

Temperature area: displays the project number of the current IDU.

Timer area: displays the opening degree value.

If the HBS network consists of only one IDU, the timer area directly displays the opening degree value of electronic expansion valve in the “C16” interface.

When the wired controller displays the opening degree of electronic expansion valve after receiving signals from the remote controller, the opening degree of electronic expansion valve of the IDU that has the minimum project number in the HBS network is displayed by default.

Temperature area: displays the parameter code. Timer area: displays the setting value of capacity configuration ratio of the current outdoor/IDU.

Historical fault

query ingress of

ODU

Parameter query

ingress of ODU

Five historical

faults

01-13

25-29

Operation method:

In “n6” status, press the “MODE” button to enter fault code query of ODU (when a wired controller controls multiple IDUs, only the faults memorized by the IDU that has the minimum project number can be queried). Press “ ” or “ ” to switch the fault SN. Press the “ENTER/CANCEL” button to return to the upper-level menu.

Display mode:

Temperature area: displays the fault SN and fault code from left to right (1-5, faults are arranged from the earliest to the latest).

Timer area: displays the project number of the ODU.

Operation method (n7 query is not supported for the slave wired controller): In “n7” status, the timer area is not displayed. Press the “MODE” button to enter parameter query of ODU. The first bit in the temperature area (display bit of the ODU module ID) blinks. Press “▲” or “▼” to switch the ODU module ID. Press the “MODE” button to select an ODU module. In this case, the first bit in the temperature area stops blinking, and the second and third bits in the temperature area display the parameter code. The timer area

Duct type split Air conditioner Inverter Series

Parameter

Code

Parameter Name

Unit

cooling/heating

function

Bar code query of

IDU

Parameter

Range

nA:

cooling/heating

nC:

single-cooling

nH:

single-heating

nF: air supply

0-9, A-Z, a-z, -

View Method

displays a corresponding parameter value. Press “▲” or “▼” to switch the parameter code and press the “ENTER/CANCEL” button to return to the upper-level menu. Display mode: Temperature area: displays the ODU module ID and parameter code from left to right. Timer area: displays a corresponding parameter value to the right.

Parameter

Code

05 Module high-pressure °C 06 Module low-pressure °C

(Actual value = Displayed value *

28 Defrosting temperature °C

31 Oil return temperature °C

33 Outlet temperature of condenser °C

Temperature area: displays the parameter code.

Timer area: displays the cooling/heating function setting value of the current unit.

Operation method (nb query is not supported for the slave wired controller): In “nb” status, the timer area is not displayed. Press the “MODE” button to enter bar code query. The temperature area displays “nb” and the project number in the timer area blinks. Press “▲” or

Parameter Name Unit

Outdoor environment

temperature

Operation frequency of

compressor 1

Operation frequency of

compressor 2

Operation frequency of outdoor

fan

Discharge temperature of

compressor 1

Discharge temperature of

compressor 2

Discharge temperature of

compressor 3

Discharge temperature of

compressor 4

Discharge temperature of

compressor 5

Discharge temperature of

compressor 6

Operation frequency of

compressor 3

Outdoor unit heating EXV1

10)

Outdoor unit heating EXV2

10)

Subcooler EXV

10)

Liquid-extracting temperature of

subcooler

Outlet temperature of

accumulator

Inlet-tube temperature of

condenser

°C

PLS

°C

Duct type split Air conditioner Inverter Series

Parameter

Code

Parameter Name

Parameter

Range

View Method

“▼” to switch the project number of IDU. Press the “MODE” button to select an IDU. The temperature area displays “Un” and the timer area displays “-n”. Press “▲” or “▼” to display the entire-unit bar code and controller bar code of IDU. Press the “ENTER/CANCEL” button to return to the upper-level menu. The temperature area displays “nb” and the timer area displays the project number of the queried IDU. Press the “ENTER/CANCEL” button again to return to the upper-level menu.

Display mode:

Temperature area: displays nb/Un/Pc/bar code.

Timer area: displays -n/project number/bar code.

The following is an example:

Example

Entire-init bar code of IDU N1r0128150066

Controller bar code of IDU N1r0128150067

Temperature Area

Un (to the right)

N1r 0128

150 066

Pc -n

N1r 0128

150 067

Timer Area

-n (in the middle)

Remark 1 Remark 2

indicates

It that the following is the entire-unit bar code of IDU.

indicates

It the former seven bits of the bar code.

indicates

It the latter six bits of the bar code.

indicates that the following is the controller bar code of IDU.

indicates

It the former seven bits of the bar code.

indicates the latter six bits of the bar code.

Press “▼” to display downward and press “▲” to display upward.

Note:

1. Un indicates the entire-unit bar code of IDU and Pc indicates the controller bar code of IDU.

2. When there is only one IDU, press the “MODE” button in “nb” status to enter bar code query without selecting the project number of IDU.

3. The system quits the query status if no operations are performed in 60 seconds.

4. The bar code query starts from the entire-unit bar code of IDU and ends at the controller bar code of IDU without circulation. That is, the query does not start again even if users press “▼”.

Note:

In parameter query status, "FAN", “TIMER”, "SLEEP", and "SWING" are invalid. By pressing the

“ON/OFF” button, users can return to the main interface but not power on/off the unit.

3.4 Engineering Parameter Settings

Engineering parameters can be set in power-on or power-off status.

Duct type split Air conditioner Inverter Series

(1) Press and hold the “FUNCTION” button for five seconds. The temperature area displays “C00”.

Continuously press the “MODE” button for “FUNCTION” button for

temperature

Select a parameter code by pressing “ ” or “ ”. Press the “MODE” button to switch to parameter

(2)

area displa

five seconds to enter the engineering paramete

ys “P00”.

three times, and then press and hold the

r setting interface. The

value settings. The parameter value blinks. Adjust the parameter value by pressing “ ” or “ ” and

then press the “ENTER/CANCEL”

(3)

Press the “ENTER/CANCEL” button to return to the upper-level menu till quitting parameter

button to complete settings.

settings. In the engineering parameter setting interface, users can also set user parameters. The engineerin

paramete

Parameter

r setting list is as follows:

Code

P15

P17

P20

P21

P22

P32

Parameter Name Parameter Range Default Value Remark

Power-down

memory mode

Historical fault

clearing for IDU

Environment

temperature

sensor settings

for IDU

Corrected value

of environment

temperature

sensor of IDU (for

cooling,

dehumidifying,

and air supply)

Corrected value

of environment

temperature

sensor of IDU (for

heating, fast

heating, and air

warming)

Capacity

00: standby after

power-down recovery

01: restoring the original

status after power-down

recovery

00: not cleared

01: cleared

01: temperature sensor

of air return vent

02: temperature sensor

of wired controller

03: temperature sensor

of air return vent for

cooling, dehumidifying,

and air supply;

temperature sensor of

wired controller for

heating

04: temperature sensor

of wired controller for

cooling, dehumidifying,

and air supply;

temperature sensor of

air return vent for

heating

-15 to +15

-40% to +40% 00

00 --

Historical faults of all IDUs controlled

Temperature

sensor of unit:

0°C; temperature

sensor of wired

controller: 0°C

Temperature

sensor of unit:

-2°C;

temperature

sensor of wired

controller: 0°C

by the current wired controller are cleared.

When there are master and slave wired controllers and the temperature sensor of wired controller is used, only the temperature sensor of the master wired controller is used by default.

Note:

1) In automatic mode, the envir settings are invalid for a common IDU but the setting value is memorized.

2)The environment temperat sensor settin fresh-air IDU. sensor of air return vent is used by defau

Press “ ” or “ ” to add or reduce by 1°C.

Press ” ” or ” ” to add or reduce by 1°C.

The temperature sensor of unit and the temperature sensor of wired controller share the same corrected value.

In heating mode, corrected value of temperature sensor of unit = corrected value of temperature sensor of wired controller - 2°C.

Press " " or " " to add or reduce

onment temperature sensor

gs are invalid for

The temperature

lt.

ure

Duct type split Air conditioner Inverter Series

Parameter

Code

P35

P36

P40

P52

Parameter Name Parameter Range Default Value Remark

adjustment

function of IDU

Factory setting

recovery for user

functions

Factory setting

recovery for engineering

settings

Prevention for

heat collection

Setting of indoor rotate speed in efficiency testing mode

00: invalid

01: valid

00: invalid

01: valid

00: disabled 10: 10 seconds 20: 20 seconds 30: 30 seconds 40: 40 seconds 50: 50 seconds 60: 60 seconds

100~1800

by 10%.

Select "01" and then press and hold the “ENTER/CANCEL” button to restore the factory settings for user functions (factory setting recovery fails if remote shielding is valid).

Select "01" and then press and hold the “ENTER/CANCEL” button to restore the factory status for engineering settings (factory setting recovery fails if remote shielding is valid).

It indicates the number of seconds for enabling the low-level fan every 15 minutes.

In P52, timer area show the actual rotate speed of AHRI indoor fan motor. Quick press “MODE”, enter into setting interface, timer area show the rotate speed of indoor fan motor and twinkle, press “▲” and”▼” to select the rotate speed, Press “Mode” and hold for 0~5s, the rotate speed of indoor fan motor will increase or decrease by single digits; Press “MODE” and hold for 5~10s, the rotate speed of indoor fan motor will increase or decrease by ten digits, within its maximum and minimum value (100~1800). Quick press “Confirm/Cancel” to confirm and return to last status,

P67

Select the way of

adjusting static

pressure

System

conservation

operation settings

Defrosting period

settings

Forcible

defrosting

Highest capacity

output limitation

settings for ODU

Silent function of

ODU

00: manually

01:automatically

00: comfortability

preferred

01: conservation

preferred

40: 40 minutes 50: 50 minutes 60: 60 minutes

00: common

01: forcible defrosting

08: 80% 09: 90%

10: 100%

00: no silent function

01-09: intelligent

Present Way: Temperature area: P52 Timer arer: Indoor fan motor rotate speed.

After settings, it automatically restores to "00".

Enter query in “n4” status. The temperature area displays the function code and the timer area displays the corresponding function setting value.

Enter query in “A7" status. The temperature area displays the function code and the timer area

Duct type split Air conditioner Inverter Series

Parameter

Code

Note:

In parameter setting status, "FAN", “TIMER”, "SLEEP", and "SWING" are invalid. By pressing the

“ON/OFF” button, users can return to the main interface but not power on/off the unit.

Parameter Name Parameter Range Default Value Remark

nighttime silent mode

10-12: forcible silent

mode

displays the corresponding function setting value.

3.5 Failure Display

When a fault occurs during the system operation, the temperature area of wired controller displays

the fault code. When multiple faults occur, fault codes are circularly displayed.

 When a fault occurs, power off the unit and ask for professional maintenance personnel for help.

The following figure shows the power-on high-pressure protection fault interface.

Power-on High-pressure Protection Fault Interface

4 Monitoring Software

4.1 Function introduction

Integrating with telecommunication technology and computing software, Gree Commissioning Tool

Kits can realize the comprehensive monitor, control and commissioning on central air conditioners. It is

an efficient solution for the management of central air conditioners that are separated in different parts of

a building. Administrator doesn’t need to control every unit on site, but rather controls the units by just

sitting in front of a computer. This will not only improve the productivity, but also reduce cost on human

resources, property and management.

Gree Commissioning Tool Kits can monitor and control the duct type split air conditioner inverter

series. User can monitor and control units by monitoring the computer. This software is an efficient tool

for the intelligent air conditioning management as well as installation and after-sales service and

commissioning. It can debug units and control units’ operation status quickly and conveniently. It will not

only improve the productivity but also reduce the difficulty and cost of commissioning and maintenance,

providing better and faster service to customers.

Duct type split Air conditioner Inverter Series

4.2 Connection of computer and units

It can be connected with single-system network or multi-system network. In the single-system

network, indoor units or outdoor units are connectable, while in the multi-system network, only the

master outdoor unit can be connected.

Seen from the diagram, Gree commissioing network is made up of 3 parts:

The 1st part is the monitoring computer, including Gree debugger and Gree USB converter driver

that are installed in the computer.

The 2nd part is Gree USB converter, which is to convert the air conditioning communication into

computing communication. This part is made up of Gree USB data converter and USB data wire.

The 3rd part is air conditioners, including outdoor units, indoor units and the connection wires. If

connection wire is not long enough, it’s OK to connect via the patching board of the commissioning tool

kits. In a single-system network, both indoor units and outdoor units can be connected, while in a

multi-system network, only the master outdoor unit can be connected.

4.3 Parts introduction

4.3.1 List of parts

Name Model Material no. Remark

Gree USB data converter MC40-00/B 30118027

Gree Commissioning Tool Kits

(CD-ROM)

USB wire \ 40020082

Communicaiton board \ 30118015

Board connection wire (1m) \ 4001023229 4-core wire connecting units and converter

Board connection wire (5.5m) \ 4001023214 4-core wire connecting units and converter

Instruction manual \ 66174100018 Instruction manual

DG40-33/A(C) 36400000003

4.3.2 Gree USB data converter

4.3.2.1 Functions introduction

Convert the air conditioning communication

into computing communication

Include Gree debugger, monitoring software,

USB driver and USB converter configuring

software.

Wire connecting computer’s USB interface

and converter

This board can be used when units are far

from the computer.

Gree USB data converter will convert the RS485, HBS and CAN commucation within the air

conditioners into the communication that is recognizable by computer’s USB interface.

4.3.2.2 Appearance

Duct type split Air conditioner Inverter Series

4.3.2.3 Operation instruction

 Power LED: a red light. If the red light is on, it indicates normal power supply. If the red light is off,

it indicates the power supply of converter is not normal.

 Communication LEDs: yellow lights. When converter is working and the computer is transmitting

data, the TX data transmitting light will be flickering. When units are uploading data to the

Duct type split Air conditioner Inverter Series

computer, the RX data receiving light will be flickering.

 When converter is under RS485 data transferring mode, the function LED

be on.

When converter is under CAN data transferring m



on.



When converter is under HBS data transferring mode, the function LED of HBS to USB will be

on.



USB interface: connect U

CAN interface: When converter is under CAN communication mode, conn



CAN data interface. CAN interface exh

 HBS interface: When HBS converter is under HBS communication mode, connect air

conditioner’s HBS data interface. HBS interface exhibits no polarity (This interface is not yet

available for Gree debugger and the monitoring software)

RS485 interface: When RS485 converter is under RS485 communication mode, co



conditioner’s RS485 d

different.

SB data wire.

ibits no polarity (A and B are equal).

ata interface. RS485 interface exhibits polarity and terminal A and B are

ode, the function LED of CAN to USB will be

of RS485 to USB will

ect air conditioner’s

nnect air

4.3.2.4 Installation notice

 Install indoors. To avoid collision, it is suggested to place it in the monitoring room together with

the computer.



No need of power supply. Power is supplied through computer’s USB interfac

4.3.3 Communication board

Communication board is mainly used for transferring data. It functions similar with a patching board.

Provided that units are far away from the monitoring computer, communication board can be used for

connection.

4.3.4 Communication cord

4.3.4.1 USB wire

 Connect USB wire with computer’s USB interface at one end and with the USB interface of USB

data convert

er at the other end, as indicated below

USB Wire

4.3.4.2 Board Connection Wire

 There are 2 board connection wires supplied for the commissioning tool kits. One is 1 meter’s

long and the

other is 5.5 meters’ long. They are only different in l

ength. One end of the wire shall

Duct type split Air conditioner Inverter Series

connect with air conditioner’s communication interface and the other end shall connect with CAN

interface of Gree USB converter. As shown below, the wire can be connected to the

communication interface of outdoor unit or the communication interface of indoor unit:

4.4 Software introduction

Board Connection Wire

One-bu

（1）

Personnel r

pressing one button according to the commissioning logic of

commissioning order to units. Then commissioning

During the commissionin

interface. If any commissioning pr

Compr

（2）

tton commissioning

esponsible for the commissioning of

g, the corresponding process will be ticked in

ocess is not normal, it will be displayed in r

ehensive monitoring

air conditioners can start commissioning by

software, which will give the

will be started up automatically step by step.

green on the software

ed.

The software can monitor every part of the air conditioning system, including functions, eq

and components operating statu

user can acquire the ope

（3）

Real-tim

e control

Air conditioner’s oper

rating status of the entire system conveniently and straightforwardly.

ating time and requirements may be different based on areas and functions.

s. The monitoring results will be displayed in text or curve so

User can set units’ parameters on computer according to actual needs, such as th

temperature,

fan speed, mode, etc. Meanwhile, the software can also set or view the

parameters of outdoor units, gateway and other equipment. In this way, the mangement of central

uipment

that

e on/off,

function

air conditioners is realized

ay history

Repl

（4）

Software can replay and

speed can be selected and the information will be shown in text or cu

saved the time to track p

Applicable to multiple series, mo

（5）

Gree Commissioning Tool Kits is applicable to

save the historical monitoring information in the

data base. The replay

rve. This function has greatly

roblem cause and resolved the difficulty of problem reprod

dels and users

air conditioning system that comsists of multiple

uction.

series and models. Later, it will be developed to cover all series of Gree central air conditioners,

such as multi VRF, centrifugal chiller, screw type chiller, ground source heat pump units,

modular

Duct type split Air conditioner Inverter Series

units, fan coiled units, close control units, etc. It can be used by system and controller designers to

develop and monitor units, or used for maintenance and commissioning.

Other functions

（6）

For the convenience of users, the software has added functions like connection guide, printing

screen, opening database folder, rebuilding database, changing database saving path, etc.

4.4.1 Software installation

4.4.1.1 Installation requirements

Computer Configuration

（1）

Memory

Hard Disc 10 GB available

CPU

Windows Server 2003 SP3 or higher

Operation System

1 GB at least

2 GB or above is preferred

Core 2 or higher

1 GHz at least

2 GHz or above is preferred

Windows XP SP3 or higher

Windows Vista

Windows 7

(2) CD Playing

Make sure you have administrator access to the computer and there is a CD-ROM in the computer.

Put the CD into the CD-ROM. If it’s automically running, then the following display will be shown. Or

double-click the file “Launcher.exe”.

For the first time to use Gree Commissioning Tool Kits, install these programmes: .Net Framework

4.0, USB Data Converter, Access Driver (necessary for versions below OFFICE 2007), Gree Debugger.

Duct type split Air conditioner Inverter Series

4.4.1.1 Installation flowchart

Button Graphics

This flowchart describes basically the software installation process. See below for details.

4.4.1.2 Installation process

(1) Install .Net Framework 4.0

 If your computer has installed .Net Framework 4.0 or versions above, there’s no need to install

again. Otherwise, click “Install .Net Framework 4.0”.

 Extracting files

Duct type split Air conditioner Inverter Series

 Click and select “I have read and accept the license terms”. Then click “Install”.

 Installation is in progress.

Duct type split Air conditioner Inverter Series

 Click “Finish” to complete the installation.

Duct type split Air conditioner Inverter Series

(2) Install Access Driver

 Before operating Gree commissioning software, please first install Access Driver (necessary for

versions below OFFICE 2007). Click “Install Access Driver”.

 Click ”Next”.

Duct type split Air conditioner Inverter Series



Tick “I accept the terms in the License Agreement” and then click “Next”

Click “Browse” to change the default folder to the expected one, or click “Install” to continue the



installation.

 Installation is in progress.

Duct type split Air conditioner Inverter Series

 Click “Ok” to complete the installation.

(3) Install Gree Debugger

 Before installing Gree debugger, make sure that your computer is installed with .Net Framework

4.0 or versions above. Then click “Install Gree Debugger”.

 Click “Next”.

Duct type split Air conditioner Inverter Series

Click “Browse” to select installation folder. If no change is needed for the folder, click “Next” to



continue the installation.

 Click “Next”.

Duct type split Air conditioner Inverter Series

 Installation is in progress.

Duct type split Air conditioner Inverter Series

 Click “Close” to complete the installation.

(4) Install USB Converter Driver

 If USB converter driver is already installed in your computer, this part can be skipped. Otherwise,

click “Install USB Converter Driver”.

Duct type split Air conditioner Inverter Series

 Then the following installation window will be shown.

 This window will exit after installation is finished.

Duct type split Air conditioner Inverter Series

(5) Install Gree USB Data Converter

 If converter baud rate is needed to be set, then converter configuring software must be installed.

Click “Install Gree USB Data Converter”.

 Then select the setup language. You can choose Chinese ”simplified”, Chinese “traditional” or

English. Then click “OK”.

 Click “Next”.

Duct type split Air conditioner Inverter Series

 Tick “I accept the agreement”. Then click “Next” to continue installation.

 Click “Browse” to select your expected installation folder. Click “Next” to continue.

Duct type split Air conditioner Inverter Series

 Click “Browse” to change folder. Click “Next” to continue.

 If you want to create s desktop shortcut, tick “Creat a desktop icon”. Then click “Next” to continue.

Duct type split Air conditioner Inverter Series

 Destiniation location, folder and additional task will be shown in the next step. If you need to change

any of it, please click “Back”. If not, click “Install” to start installation.

 Installaiton is in progress.

Duct type split Air conditioner Inverter Series

 Click “Finish” to complete the installation.

4.4.2 Data monitoring

 Start up Gree Debugger.

On the original interface, user can select language and units system. Click “OK” to confirm the



defaulted language and units system and start up the software.

 Select language.

 Select system of units.

Duct type split Air conditioner Inverter Series

 If units you want to monitor are already connected, and able to communicate normally, with correct

COM and protocal, then you may click “Connect” to enter the interface of numbers. Otherwise,

connect in accordance with the connection diagram shown below.

 COM selection: the serial port in your computer can be detected automatically. You just need to

select your desired serial port.

Duct type split Air conditioner Inverter Series

 Protocal selection: This is to select the communication method of your units. Currently, CAN is

applicable to the units.

 After the selection, click “Connnect”. If units can communicate normally with computer, then the

interface of numbers will be shown soon. Otherwise, “Connecting” will be shown.

Duct type split Air conditioner Inverter Series

 There are several display zones on this interface. You can hide devices information and system

information by clicking devices information icon and system icon . Display zones of indoor

unit information and errors can be dragged up and down at the dividing lines. As to the display zone

of outdoor modules information, it can show information of only one module and hide information of

others (two modules are defaulted to be shown). Menu bar can be hidden by clicking icon .

Status bar shows the current time and period for data collection.

Title bar

Error display

System info

Outdoor modules info

Devices info

Menu bar

IDU info

Status bar

Duct type split Air conditioner Inverter Series

 On the display zone of devices information, you may click to select and view units that need

monitoring.

4.4.3 Project debugging

 Click icon of “Debug” on the menu bar and the interface will be switched to project debugging,

where auto debugging will be started from up to down and from left to right. Note: Debugging

function is only applicable to a single-system network.

Duct type split Air conditioner Inverter Series

 Click “Start” to enable the debugging function. Then debugging will be started up automatically.

indicates that debugging is in progress while indicates debugging is completed.

 If “OK” button is displayed, it means user needs to judge whether to continue debugging or not.

Click icon and relevant information will be shown for your reference. Click “Close” to close the

pop-up (For No.3 Confirm ODU Basic Module NO. and No.4 Confirm IDU NO., the current number

of units under debugging will be displayed. See the following marked with circle. For No.8 Compr.

Preheat Confirmation, the preheat time will be displayed. See the following marked with circle).

Duct type split Air conditioner Inverter Series

 Icon indicates that there is problem found during debugging. Debugging will not be completed

unless problem is solved (after problem is solved, step without “OK” button will switch to the next

step automatically, otherwise user needs to click “OK” to continue). Click icon and relevant

information detected in this step will be displayed for your reference in order to solve problems.

Click “Close” to close the pop-up.

 During debugging, a click on “Break” can stop debugging. Click “Start” to resume debugging and

then debugging will be finished step by step. For No.10 ODU Valves Check Before Startup, there

are “Back” and “Skip” buttons. If there is error in this step, you can back to step No.9 and click “OK”

to restart debugging on step No.10. If the error in step No.10 is U6 error (valve error alarm), you can

click “Skip”. In other cases, “Skip” button is null.

 Step 11, 13 and 14 are reserved steps. And step 13, 14, 15 and 16 are steps in parallel (only one of

the four will be selected according to actual needs).

Duct type split Air conditioner Inverter Series

4.4.4 Control units

 Click icon of “Setting” on menu bar and select parameter settings, which include “Gateway Settings”,

“IDU Settings”, “System Settings”, “Project Number Conflict (In case there is project number conflict

in indoor units, other functions will be shielded. Then this parameter needs to be set in order to

eliminate the conflict)” and “System Historical Info”. Click the corresponding set and adjust the

parameters.

Take indoor unit as an example. Click “IDU Settings” and a dialog box will pop up.



Duct type split Air conditioner Inverter Series

 Tick the indoor units that need setting in the IDU selection zone or you may click “Select All” to

select all of them or “Select Inverted” to select none of them. After selection, the current values of

the corresponding parameters will be displayed in the zone of settings. Click “Set” and then click

in the pop-up dialog box to select values. Click “Set” and then the corresponding order will be

sent to units. If setting is successful, it will be displayed at the current values.

Duct type split Air conditioner Inverter Series

4.4.5 Other functions

Capture screen

 Click icon of “Capture Screen” to print the interface. If you want to open the interface, click “Open”.

Duct type split Air conditioner Inverter Series

Search for database folder

 Click icon of “Open Data Folder” on the menu bar to open database folder.

Duct type split Air conditioner Inverter Series

Conversion of pressure value

 Click icon of “Others” on the menu bar and then click “Display Settings” to select “High Low

Pressure Value” and “Refrigerant Type”. Select “Temperature” and the pressure parameter

displayed on the interface will be temperature. Select “Pressure” and the pressure parameter

displayed on the pressure interface will be pressure. Refrigerant type will affect the pressure

parameter displayed on the interface.

Duct type split Air conditioner Inverter Series

Database saving of multiple systems

 Click icon of “Others” on the menu bar and click “Database Save Settings” to select which system

that needs to save database. Because there is a large quantity of data in a network that contains

multiple systems, data of only one system can be saved.

Duct type split Air conditioner Inverter Series

Change database saving path and rebuild database

 Change of database saving path and rebuilding of database should be set before the software

starts monitoring (see below interface). Click “Change database saving path” and click “Browse” to

change the saving path. Click “Rebuild Database” to rebuild the database folder. You can also stop

monitoring and turn back to the connection interface to change saving path or rebuild database

during monitoring.

Duct type split Air conditioner Inverter Series

4.4.6 Usage of USB Converter

Usage of converter

 Gree commissioning software should be connected with CAN interface when converter is used. For

air conditioners with a single system, connect D1 and D2 interfaces of the wiring board. For air

conditioners with multiple systems, connect G1 and G2 interfaces of the wiring board.

 Gree monitoring software should be connected with RS485 interface when converter is used.

Connect outdoor or indoor units or the mainboard of wired controller according to actual needs.

 HBS, CAN and RS485 of the converter can be switched by buttons. Press the button “SET” on the

converter to realize the conversion among HBS, CAN and RS485 interfaces. You can check the

setting through the function LEDs.

Notice: If it’s the first time your PC uses Gree USB data converter, in order to prevent Gree USB

data converter from being mistaken by your computer as other devices and make sure your mouse

can work well, it is necessary to turn off the Serail Enumerator of computer after Gree USB data

converter is connected. Below are the steps:

Step 1: Right-click ”My Computer” on the desktop and click ”Manage”.

Step 2: In the pop-up window, select “Device Manager” in the left column and then find “Port

(COM and LPT)” in the right column. Click its .

Duct type split Air conditioner Inverter Series

Step 4:

Right-click ”USB Serial Port (COM6) and then click ”Properties”. The dialog box of properties will

then pop up.

Step 5: Then click ”Port Settings” in the dialog box.

Duct type split Air conditioner Inverter Series

Step 6: Click ”Advanced” and then a new dialog

box will pop up. Find the ”Serial Enumerator” in

the miscellaneous options and cancel the tick. Click ”OK” to exit.

Duct type split Air conditioner Inverter Series

Usage of converte

r configuring software:

 When the converter is working, hold the button ”SET” for 5 sec. Function LED will be flickering,

indicating that the converter has enter the baud rate setting mode. Then you can use the converter

configuring software to set the baud rate of converter. Baud rate supported by the converter (baud

rate of air conditioner’s communication interface matches with the baud rate of USB interface

automatically):

Ex-factory defaulted baud rate: (unit: bps)

AC is connected with Baud rate of air conditioner interface Baud rate of USB interface

CAN 20000/50000 self-adaptive 115200

HBS 57600 38400

RS485 9600 9600

Baud rate look-up table for RS485 interface (unit: bps)

RS485 interface

USB interface

HBS interface

USB interface 4800

4800 9600 19200 38400 57600 115200

Baud rate l

9600 19200

Baud rate look-up table of CAN interface (unit: bps)

ook-up table for HBS interface (unit: bps)

38400

9600 19200

57600

38400

CAN interface

USB interface

20000 50000 100000 125000

115200 115200 256000 256000

 Double-click the desktop shortcut.

Duct type split Air conditioner Inverter Series

 Select the needed communication serial port and language in the “System Settings”.

 Select the function that is to be set and the corresponding baud rate (refer to the look-up table) in

the “Converter Setup”.Then click “Set”.

Duct type split Air conditioner Inverter Series

 If you want to restore ex-factory settings, click “Default” to restore the default settings.

 Click “Get” to get the current setting details of converter.

Duct type split Air conditioner Inverter Series

 Switchover of Software Languages

Duct type split Air conditioner Inverter Series

INSTALLATION

Duct type split Air conditioner Inverter Series

1 Engineering Installation Preparation and Notice

1.1 Installation notice

Personnel and property safety are highly concerned during the entire installation process.

Installation implementation must abide by relevant national safety regulations to ensure personnel and

property safety.

All personnel involved in the installation must attend safety education courses and pass

corresponding safety examinations before installation. Only qualified personnel can attend the

installation. Relevant personnel must be held responsible for any violation of the regulation.

1.2 Installation key points and importance

The system use refrigerant, instead of other agent, to directly evaporate to carry out the system heat.

High level of pipe cleanness and dryness is required in the system. Since various pipes need to be

prepared and laid out onsite, carelessness or maloperation during installation may leave impurities,

water, or dust inside refrigerant pipes. If the design fails to meet the requirement, various problems may

occur in the system or even lead to system breakdown.

Problems that usually occur during installation are as follows:

No. Installation Problem Possible Consequence

are more likely to be blocked; air conditioning performance is reduced;

Dust or impurities enter into the

refrigeration system.

Nitrogen is not filled into the efrigerant pipe or insufficient

Nitrogen is filled before welding.

The vacuum degree in the

efrigerant pipe is insufficient.

Water enters into

the refrigeration system.

The refrigerant pipe

pecifications do not meet the

configuration requirements.

Refrigerant pipe is

Refr

igerant pipe exceeds the

Incorrect amount of refrigerant is

The refrigerant pipe leaks.

Water drainage from

condensate water pipe is not

smooth.

The ratio of slop for condensate

water pipe is insufficient or the

ondensate water pipe is

incorrectly connected.

channel is improperly

The air

The guide vane of air channel is

not reasonably manufac

blocked.

limit.

filled.

fixed.

the

tured.

Pipes

compressor wear is increased or even hinder the normal operation of the system

are more likely to be blocked; air conditioning performance is reduced;

Pipes

compressor wear is increased or even hinder the normal operation of the system

The refrigeration performance is reduced. The system fails to keep normal

ation due to frequent protection measures. When the problem getting serious,

oper

Copper

efficiency with abnormal noise generated; failures may occur in the system due to

maller configuration specifications can increase the system pipe resistance and

affect the cooling performance; larger configuration specifications are waste of

The c compressor operating under overheat conditions; the lubricating effect can be

affected and the compressor may be burnt if impurities were mixed with the

The loss in pipe is c

The system cannot correc

operating under over-heating environment or running when the refrigerant flows

Insufficient refrigerant circulating in the s of the air conditioner. Long-term operation under such circumstance may cause an

Res

Rev

The air

compressor and other major components can be damaged.

plating may appear on the compressor and reduce the compressor

materials and can also reduce the cooling performance.

ooling performance is reduced; in certain cases, it may cause long-term

are harmful for long-term running of the system.

overheating compressor or even damage the compressor.

idual water in IDUs can affect the normal operation of the system. The

possible water leakage can damage the IDU's decoration.

erse slop or inconsistent connection of condensate water pipe can hinder the

smooth drainage and cause leakage of the IDU.

channel will deform; vibration and noise occur during unit operating.

Unev

en air quantity allocation reduces the overall performance of the air

and burn the compressor.

ice plug.

lubricating oil.

onsiderable and the unit energy efficiency decreases, which

tly control the flow allocation; the compressor may be

back to the compressor.

ystem decreases the cooling performance

conditioner.

Duct type split Air conditioner Inverter Series

No. Installation Problem Possible Consequence

The refr

condensate water pipe does not

meet the insulation requirement.

igerant pipe or

can easily condensate and drip to damage the indoor decoration, or even

Water

trigger the protection mode of system due to overheating operation.

The installation space for IDU is

The IDU or the location of the air

outlet or return air inlet is not

The ODU is improperly ins

Power c

Control communication cables

are not pr

insufficient.

designed r

e incorrectly provided or improperly connected.

easonably.

ables are incorrectly

provided.

operly protected.

talled.

Since there is a lack of s

might need to be damaged during such operation.

The air outlet or r

The ODU is difficult to be maintained; unit exhaust is not smooth, which reduces

the heat exchanging performance or even prevent the system from norm

operation; in addition, the cold and hot air for heat exchange and the noise may

Unit components may be damaged and potential safety haz

The normal communication in the system fails or the contr

The communication cables are short-circ

cannot be started up due to communication failure.

pace for maintenance and checking, indoor decoration

eturn air inlet may be short-circuited, thus affecting the air

conditioning performance.

annoy people in surrounding areas.

ard may occur.

ol over IDUs and ODUs

turn in a mess.

uited or disconnected, and the unit

Understand the special requirement (if any) for unit installation before implementation to ensure

installation quality. Relevant installers must have corresponding engineering construction qualifications.

Special type operators involved in the engineering implementation, such as welders, electricians,

and refrigeration mechanics must have relevant operating licenses and are accredited with vocational

qualification certification.

2 Installation Materials Selection

The materials, equipment and instruments used during air conditioning engineering construction

must have certifications and test reports. Products with fireproof requirements must be provided with

fireproof inspection certificates and must meet national and relevant compulsory standards. If

environmentally-friendly materials are to be used as required by customers, all such materials must

meet national environmental protection requirement and be provided with relevant certificates.

2.1 Refrigerant piping

a. Material requirement: Dephosphorization drawing copper pipe for air conditioners;

b. Appearance requirement: The inner and outer surface of pipe should be smooth without pinhole,

crack, peeling, blister, inclusion, copper powder, carbon deposition, rust, dirt or severe oxide film, and

without obvious scratch, pit, spot and other defects.

c. Test report: Certifications and quality test reports must be provided.

d. The tensile strength must be at least 240 kgf/mm².

e. Specifications requirement

R410A Refrigerant System

OD (mm/inch) Wall Thickness (mm) Model

0.8

Ф6.35(1/4)

Ф9.52(3/8)

≥

0.8

Duct type split Air conditioner Inverter Series

0.8

Ф12.70(1/2)

Ф15.9(5/8)

Ф19.05(3/4)

Ф22.20(7/8)

Ф25.40(8/8)

≥

1.0

1.2

f. After the inner part of the copper pipe is cleaned and dried, the inlet and outlet must be sealed

tightly by using pipe caps, plugs or adhesive tapes.

2.2 Condensate water pipe

a. Pipes that can be used for air conditioner drainage include: water supplying UPVC pipe, PP-R

pipe, PP-C pipe, and HDG steel pipe;

b. All relevant certificates and quality test reports are provided.

c. Requirements for specifications and wall thickness

Water supplying UPVC pipe: Φ32mm×2mm，Φ40mm×2mm，Φ50mm×2.5mm;

HDG steel pipe: Φ25mm×3.25mm，Φ32mm×3.25mm，Φ40mm×3.5mm，Φ50mm×3.5mm.

2.3 Insulation material

a. Rubber foam insulation material;

b. Flame retardancy level: B1 or higher;

c. Refractoriness: at least 120℃;

d. The insulation thickness of condensate water pipe: at least 10 mm;

e. When the diameter of copper pipe is equal to or greater than Φ15.9 mm, the thickness of

insulation material should be at least 20 mm; when the diameter of copper pipe is less than 15.9 mm, the

thickness of insulation material should be at least 15 mm.

2.4 Communication cable and control cable

Note: For air conditioning units installed in places with strong electromagnetic interference, shielded

wire must be used as the communication cables of the IDU and wired controller, and shielded twisted

pairs must be used as the communication cables between the IDU and ODU.

Communication cable selection for ODU and IDUs

Total Length L

(m/feet) of

Material Type

Light/Ordinary

polyvinyl

chloride

sheathed cord.

(60227 IEC 52

/60227 IEC 53)

Communication

Cable between

Indoor Unit and

Indoor (Outdoor)

Unit

L≤1000m

(L≤3280-5/6feet)

Wire size

/AWG)

(mm

2×0.75

≥

(≥2×AWG18)

：

Material

Standard

IEC

60227-5:2007

Remarks

1. If the wire diameter is enl arged to 2×1

(2×AWG16), the total communication line length can reach 1500 m (4921-1/4feet).

2. The cord shall be Cir cular co rd (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.

Communication cable selection for IDU and wired controller：

Duct type split Air conditioner Inverter Series

Total length of

communication

Material type

Light/Ordinary

polyvinyl

chloride

sheathed

cord.(60227

IEC 52

/60227 IEC 53)

line between

indoor unit and

wired controller

L (m/feet)

L≤250m

(L≤820-1/5feet)

Wire size (mm

2×0.75~2×1.25

(2×AWG18~2×AWG16)

/AWG)

Material

Standard

IEC

60227-5:2007

Remarks

1.Total length of communica e can't exceed 250m

lin (820-1/5fee

.The cord shall be Circ ular cord

(the cores shall be twisted together



3.If unit is

tense magnetic field or st

terference, it is necessary

se shielded wi

t).

installed in places wi

re.

2.5 Power cable

Only copper conductors can be used as power cables. The copper conductors must meet relevant

national standard and satisfy the carrying capacity of unit.

2.6 Hanger rod and support

a. Hanger rod: M8 or M10;

tion

rong

b. U-steel: 14# or above;

Angle steel: 30mm×30mm×3mm or above;

d. Round steel: Φ10mm o

r above

3 Installation of Indoor Unit

3.1 Outline and installation dimension

Duct type split Air conditioner Inverter Series

b. 40kW

Below are dimensions of A, B, C, etc. for different models:

Unit: mm

Model

FGR20Pd/DNa-X(I)

FGR25Pd/DNa-X(I)

FGR30Pd/DNa-X(I)

FGR40Pd/D(2)Na-X(I)

1334 632 990 1150 192 363

1541 705 980 1350 270 420

1541

1730 760

3.2 Installation space

705

980 1350

1054 1450 360 560

270

420

3.3 External static pressure setting and reading

3.3.1 External static pressure setting

You can enter P67 select the way of adjusting static pressure for the blast pipe m

automatically.The default value is 00,which means adjusting manually.

(1) If you choose 00,you can select the suitable level for any blast pipes. It can reach to 250Pa

anually or

Duct type split Air conditioner Inverter Series

.You can enter P30 to set the value.

① Long press FUNCTION button for 5s and the temperature zone displays “C00”; long press

FUNCTION button for another 5s to enter the interface of s

etting wired controller parameters. “P00” is

displayed in temperature zone.

② Press “▲” or “▼” button to select parameter code. Press MODE button to enter parameter setting.

At that time, parameter value is blinking. Press “▲” or “▼” button to adjust the parameter value and

press ENTER/CANCEL button to finish setting.

③ Press ENTER/CANCEL button to return to last step until exists setting parameters.

The parameter setting list is as following

Parameter

code

Param

eter name

Set static pressure of indoor

fan motor

Parameter range

01-09: static pressure level of

indoor fan motor

Default

alue

Note

Ther

e are 9 static

pressure level:

01, 02, 03, 04, 05, 06,

07, 08, 09

Note:

① Under parameter setting status, FAN, TIMER, SLEEP and SWING button are invalid. Press

ON/OFF button to go back to home page, but not turning on/off the unit.

② If the power cord is more than 15 m (49-1/4 ft.) long, please increase properly the sectional area of

power cord to avoid overload, which may cause accident.

External Static Pressure s

0 inWG(0 Pa) 01

0.12 inWG(30 Pa) 02

0.24 inWG(60 Pa) 03

0.36 inWG(90 Pa) 04

0.48 inWG(120 Pa) 05

0.60 inWG(150 Pa) 06

0.72 inWG(180 Pa) 07

0.84 inWG(210 Pa) 08

1.00 inWG(250 Pa) 09

tatic pressure level of indoor fan motor

Note:

Keep in mind that a shortage of airflow quantity or water leakage will result because the air conditioner

will be operated outside the rated range of airflow quantity if the external static pressure is wrongly set.

(2) If you choose 01,the indoor motor will adjust static pressure of the blast pipe automatically when start-up every time.So how to enter P67?

Long press FUNCTION button for 5s and the temperature zone displays “C00”; press MODE button

①

for three times in 3s;long press FUNCTION button for another 5s to enter the interface of setting wired

controller parameters. “P00” is displayed in temperature zone.

② Press “▲” or “▼” button to select parameter code. Press MODE button to enter parameter setting. At

Duct type split Air conditioner Inverter Series

that time, parameter value is blinking. Press “▲” or “▼” button to adjus

t the parameter value and press

ENTER/CANCEL button to finish setting.

(3) Press ENTER/CANCEL button to return to last step until exists setting parameters.

The parameter setting list is as following

Parameter code P

P67 Select the way of adjusting static pr

arameter name

essure

Parameter range Default value

00: manually

01:automatically

3.3.3 External static pressure reading

If you want to know the exact external static pressure,you can set P67 to 01,restart the

machine,after about 2 minutes,enter C24 to read the exact ESP.

① Long press FUNCTION button for 5s and the temperature zone displays “C00”; press MODE button

for three times in 3s.

② Press “▲” or “▼

” button to C24,there you can read the exact ESP.

3.4 Installation notice

◆The unit shall be installed by the professional personnel according to this installation instruction

ensure proper use.

malfunctioncaused by the unit that is not installed by the Gree appointed service center would probably

not be dealt with on time because of the inconvenience of the busines

other plac

◆ Pleas

e contact the local Gree appointed service center before installation. Any

s contact.

◆

It should be guided under the professional personnel when the air conditioner unit is moved to

◆Installation of the unit must be in accordance with National Electric Codes and local regulations.

◆Improper installation will affect unit’s performance, so do not install the unit by yourself. Please

ontact local dealer to arrange professional technicians for the installation.

◆

Do not connect power until all installation work is finished.

◆If the supply cord is damaged, it must be replaced by the manufacturer or its service agent or a

imilarly qualified person in order to avoid a hazard.

3.5 Selection of air switch and power cord

Model Power supply

FGR20Pd/DNa-X(I)

220V~50/60HZ

Circuit

breaker

capacity

（A）

10 1×1.5 2×1.5

）Number of

（mm

ground wire * Min

sectional area

(mm

)

（mm

power cord * Min

sectional area

(mm

）Number of

)

Duct type split Air conditioner Inverter Series

FGR25Pd/DNa-X(I)

FGR30Pd/DNa-X(I)

FGR40Pd/D(2)Na-X(I)

220V~50/60HZ 220V~50/60HZ

3N~ 380V 50/60HZ

10 1×1.5 2×1.5

10 1×1.5 4×1.5

4 Installation of outdoor unit

4.1 Check before installation

a. Before installation, please check the power cord if it complies with the power supply requirement

on the nameplate. Make sure the power supply is safe.

b. This air conditioner must be properly grounded through the receptacle to avoid electric shock.

The ground wire shouldn’t be connected with gas pipe, water pipe, lightning arrester or telephone line.

c. Maintain good air circulation to avoid lacking oxygen.

d. Read this manual carefully before installation.

4.2 Selection of installation site

a. Select a location which is strong enough to hold unit’s weight so that unit can stand still and erect.

b. Make sure the unit is not exposed to sun and rain. And the location can resist dust, typhoon and

earthquake.

c. Please keep the unit away from inflammable, explosive and corrosive gas or waste gas.

d. Make sure the location has space for heat exchange and maintenance so that unit can operate

reliably with good ventilation.

e. ODU and IDU should stay as close as possible to shorten the length of refrigerant pipe and

reduce bend angles.

f. Select a location which is out of children’s reach. Keep the unit away from children.

4.3 Carrying and installing outdoor unit

When carrying the outdoor unit, hang the unit in four directions with two sufficient ropes. In order to

avoid excursion from the center, the angel of ropes must be smaller than 40º during hanging and

moving.

4.4 Installation notices

In order to ensure proper operation, the selection of installation site must conform to the following

principle:

●The discharged air of outdoor unit will not flow back and there is sufficient space around the unit

for maintenance;

●The installation site must be well ventilated to ensure sufficient air intake and discharge. Make

sure there is no obstacle at the air inlet and air outlet. If there is any obstacle, please remove it;

●The installation site shall be able to withstand the weight of outdoor unit and capable for

soundproof and vibration. The air outlet and noise of unit will not affect neighbors;

●The hanging of outdoor unit must use appointed hanging hole. Pay attention to protect the unit

during hanging and installation. Prohibit hitting the sheet metal to avoid rust in the future.

●Avoid direct sunlight;

Duct type split Air conditioner Inverter Series

●The rain and condensation water can be drained out smoothly;

●The outdoor unit will not

be embedded by the snow and not affe

●The installation of outdoor unit shall

adopt rubber damping pad or spring damper to reduce noise

cted by garbage and oil smog;

and vibration;

●The installation dimension shall accord with the installation requirement of this manual and the

outdoor unit must be fixed at the installation site;

●The installation shall be done by professional tech

nicians.

4.5 Fixing and damping of unit

The outdoor unit shall be fixed with 4 M12 bolts and closely contacted with the foundation.

Otherwise, big vibration and noise will be caused.

The outdoor unit shall be fixed firmly. The rubber board with thickness over 20mm or corrugated

rubber damping pad shall be applied between the unit and foundation.

4.6 Outline dimension and position of installation hole

When carrying the outdoor unit, hang the unit in four directions with two sufficient ropes. In order to

avoid excursion from the center, the angel of ropes must be smaller than 40º during hanging and

moving.

Model

FGR20Pd/DNa-X(O)

FGR25Pd/DNa-X(O)

A B C D E

940 320

940 460

143

161

632

610

Unit: mm

350

486

Duct type split Air conditioner Inverter Series

FGR30Pd/DNa-X(O)

940 460

161

610

4.7 Installation space requirement

If all sides of the ODU (including the top) are surrounded by walls, process according to the

following requirements for installation space:

5 Installation of drain pipe

5.1 Precautions When Doing the Piping Work

Keep piping as short as possible and slope it downwards at a gradient

◆

of at least 1/100 so that

486

air may not remain trappe

For example:

Keep pipe

◆

Install the

◆

piping could l

When directly connecting a hard vinyl chloride pipe joint to the drain hose connected to the indoor

◆

size equal to or greater th

drain piping as shown and take measures against condensat

ead to leaks and eventually wet furniture and belongings.

d inside the pipe.

an that of the connecting pipe.

ion. Improperly rigged

unit, use a commercially available hard vinyl chloride pipe joint (nominal diameter 13mm).

Duct type split Air conditioner Inverter Series

Drain hose connectedto the indoor unitCommercially availablehard vinyl chloride pipejoint

◆

(nominal diameter 13mm)Commercially availablehard vinyl chloride pipe(nominal diameter 13mm)

Do not connect the drain piping directly to sewage pipes that smell of ammonia. The ammonia in

◆

the sewage might enter the indoor unit through the drain pipes and corrode the heat exchanger.

5.2 Installing the Drain Pipes

Insert the drain hose into the drain outle

◆

t, and tighten the clamp securely with tape.

Tighten the clamp until the screw head is less th

◆

Insulate the pipe clamp and the drain hose using heat insulation sponge.

◆

If the air flow of indo

◆

of outdoor air. Therefore, U-type water trap shall be designed on the drainage side of each indoor unit.

or unit is high, this might cause negative pressure and result in return suction

en 4 mm from the hose.

Install water trap as shown below

◆

Install one water trap for each unit

◆

Installation of water trap shall consid

◆

Connection of drainage branch pipe to the standpipe or horizontal pipe of drainage main

◆

The ho

◆

connected in a manner as shown belo

N01:3-way connection of drainage pipe joint

rizontal pipe cannot be connected to the vertical pipe at a same height.

er easy cleaning in the future.

pipe

It can be

Duct type split Air conditioner Inverter Series

NO2: Connection of drain elbow

NO3: Connection of horizontal pipe

When unifying multiple drain pipes, install the pipes as shown below. Select converging drain

◆

pipes whose gauge is suitable for the operating capacity of the unit.(take the cassette type unit for

example)

5.3 Precautions when doing riser piping work

Make sure that heat insulation work is executed on the following 2 spots to prevent an

◆

y possible

Duct type split Air conditioner Inverter Series

water leakage due to dew condensation.

a) Con

b) Con

◆

the drain outl

◆

supporting br

nect the drain hose to the drain

nect the drain hose to the drain outlet on the indoor unit, and tighten it with the clam

Stand the raiser piping horizontally, and make sure it is not further than 300 mm from the base

Secure a downward gradient of 1/100 or more for the drain pipe. To accomplish th

raiser pipe, and insulate them.

et.

is, mount

ackets at an interval of 1 - 1.5 m.(take the cassette type unit for example)

The incline of attached drain hose should be 75 mm or less so that the drain outlet does not have

◆

to withstand additional force.(take the cassette type unit for example)

5.4 Testing of Drain Piping

After piping work is finished, check if drainage flow

◆

n in the figure, Add approximately 1liter of water slowly into the drain pan and check

Show

◆

drainage flow during COOL running.

s smoothly.

6 Electrical Installation

Duct type split Air conditioner Inverter Series

The wiring must be in accordance with the local rules.

◆

Rated supply voltage and special circuit for air conditioner must be used.

◆

Do not pull the power cord forcefully.

◆

All the electric installations must be carried out by specialist technicians in accordance with the

◆

local laws, rules and these instructions.

The diameter of flexible wire should be wide enough. Replace the damaged power cord and

◆

connecting wire with special flexible wire.

The earthing shall be reliable and connected to the special earthing device on the construction.

◆

The installation must be done by specialist technicians. The leak protection switch and air switch with

enough capacity must be installed. The air switch shall have both the magnetic tripping and thermal

tripping functions to ensure protection against the short circuit and overload.

● Earthed Requirements

The air conditioner belongs to I type electric appliances. The reliable earthed action is a must.

◆

The yellow and green wire inside the air conditioner is the earthed wire. Do not use it for other

◆

purpose or even cut off it. Do not fix it with tapping screw,. Otherwise, it may cause electric shock.

The earthed resistance must meet the requirements of national standard GB17790.

◆

There should be reliable earthed terminal for the power supply. Never connect the earth lead to

◆

the following articles:

water pipe; ②gas pipe; ③drain pipe; ④unreliable place considered by professionals.

①

Duct type split Air conditioner Inverter Series

DEBUGGING & MAINTENANCE

Duct type split Air conditioner Inverter Series

1 Debugging of Unit

Caution:

After the initial installation is finished and the main board of outdoor unit is replaced, it must perform

debugging. Otherwise, the unit can’t operate.

2. The debugging must be performed by professional person or under the the guide of professional

person.

1.1 Preparation for debugging

(1) Do not disconnect the power before the installation is finished,

(2) All wires for controller and electric wires must be connected correctly and reliably.

(3) Check the the fixing ring of the foot of compressor for transportaion is removed.

(4) Remove all sundries from the unit, such as metal chips, joint, forceps holder, and so on.

(5) Check whether the appearance and pipeline system are damaged during carry or transportation

process.

(6) Calculate the required added refrigerant-charging volume according to the length of pipe of system

and pre-charge the refrigerant. If refrigerant can’t be added any more when the required

refrigerant-charging volume hasn’t been reached, record to refrigerant volume which still needs to

be added and continue to add refrigerant during run test operation process. Please refer to below

run test for the refrigerant-adding stage during run test process.

(7) After adding refrigerant, please make sure the valve for outdoor is opened completely.

(8) For the convenient of troubleshooting, the unit can’t be connected to the PC which installed with

related debugging software and make sure that the the datas in real time of this unit can be

inspected by this computer. Please refer to Service Manual for the installation and connection of the

bebugging software.

(9) Before turn test, please do make sure that the preheat time for compressor is 8h above and touch

the compressor to see whether preheat is normal. You can perform run test only after normal

preheat. Otherwise, it may damage the compressor.

1.2 Debugging of unit

1.2.1 flow-process diagram of debugging

Duct type split Air conditioner Inverter Series

1.2.2 Test Operation and Debugging

Once the unit is energized and turned on for the first time, the display tube of outdoor unit displays

“A0”, which indicates debugging standby status. At this time, hold SW3 button successively for 5s on the

main module to enter into the automatic debugging, and then the engineering debugging will perform

according to the set procedures. Step 4(conformation of outdoor unit’ quantity) and step 4(conformation

of indoor unit’ quantity) should be confirmed manually by pressing “SW3”, while other procedures will be

performed automatically. Once the debugging for each step is finished, “oC” will be displayed; once all

engineering debugging are finished, “oF” will be displayed, which indicates the unit is under standby

Duct type split Air conditioner Inverter Series

status.

Functions of debugging buttons:

Key No. SW1 SW2 SW3 SW4

Function Up Down OK Back

Buttons and digital display tube on the motherboard location：

Debugging procedure for test run, display instruction for indicator on main board of outdoor unit and

operation method are as below:

Description of each stage of debugging progress

—— Debugging Code

Progress

01_ Set master

unit

02_ Allocate

addresses

03_ Confirm the quantity of ODU

LED

Display Code

01/CC

01/CF

01/OF

02 Flicker

02/L7

02/OC

03/QTY of module

03/OC

Display

Code

Display

repeatedly

Display

repeatedly

Display

repeatedly

Display

repeatedly

Display

repeatedly

Display

repeatedly

Display

repeatedly

There is no master unit in the system. The system cannot

continue to conduct debugging, and all the buttons are invalid

that must be reset by cutting the power. There are two or more master units in the system. The system cannot continue to conduct debugging, and all the buttons are invalid that must be reset by cutting the power.

There is only one master unit in the system. The unit will

automatically enter into the next step after display for once. The system is allocating addresses. It will display asbelow after

10 seconds: There is no master unit. The display will last for 1 minute, within this 1 minute, the master IDU can be set by debugging software. If the master IDU has not been set within this 1 minute, the system will automatically set the IDU with the minimum IP address as the master IDU.

The system has finished allocating the addresses, there is

master IDU.It will automatically enter into the next step’s operation after displaying for once.

Confirmation of quantity of modules in the system. If the actual

quantity of ODU is inconformity with the displayed quantity, please check the dial code and wire connection and then conduct debugging for confirmation.

If the actual quantity of ODU is in conformity with the displayed

quantity, press SW3 button to confirm. After confirmation, all the module nixie tubes will repeatedly display “03” and “0C”, after displaying for once, the system will automatically enter into the next operation.

Instruction for Code and Operating Method

—— Debugging Code

Progress

04_ Confirm the

quantity of IDU

05_ Detect ODU’s

internal

communication

06_ Detect

outdoor

components

07_ Detect indoor

components

08_ Confirm

preheated

compressor

09_Confirm status

of valve of ODU

10_Debugging

completed status

Display Code

04/Cb

04/oC

05/C2

05/oC

06/corresponding

error code

06/oC

07/ corresponding

error code

07/oC

08/U0

08/oC

09/U4

OFF On

Duct type split Air conditioner Inverter Series

Description of each stage of debugging progress

LED

Display

Code

Display

repeatedly

Display

repeatedly

Display

repeatedly

Display

repeatedly

Display

repeatedly

Display

repeatedly

Display

repeatedly

Display

repeatedly

Display

repeatedly

Display

repeatedly

Display

repeatedly

It is not allowed to connect more than one indoor unit in the

system. Please check and debug again to confirm.

The quantity of IDU in the system has been confirmed.It will

enter into the next step.

Communication between master control and driving of ODU.

Please check if the communication wire between mainboard and driving board of ODU is correctly connected, if it is, enter into the next step. If the ODU should be

powered off for the debugging, after re-energizing the unit, please conduct debugging from the above 01 step.

The communication between master control and driving of ODU are normal. After displaying for once, it will automatically enter into the next step.

Error of components of ODU. Except “06”, others will flickeringly

display corresponding error code. After eliminating all the errors, it will automatically enter into the next step. If the ODU

should be powered off for the debugging, after re-energizing the unit, please conduct debugging from the above 01 step.

No component of ODU is found in the system, it will enter into

the next step 10 seconds later.

Error of components of IDU are detected. For example, the IDU

displays d5 and d6 simultaneously, the nixie tube will repeatedly

display “07”, “d5”, “d6”. After eliminating all the errors, it will

automatically enter into the next step. If the ODU should be powered off for the debugging, after re-energizing the unit, please conduct debugging from the above 01 step.

No component of IDU is found in the system, it will automatically enter into the next step 5 seconds later. Insufficiency preheating of compressor. The nixie tube will

display as the left until the preheating time for compressor has reached 8 hours, then press SW3 can skip over the waiting time, and automatically enter into the next step 2 seconds later. (Note: if the preheating time for the compressor is less than 8 hours, there may be a risk for damage of compressor, please conduct with care)

If the ODU is continuously energized for ≥8h, or the continous

8-hour energizing time in the last time till now is less than 2 hours (it requires clock chip), it means the preheating is completed, the system will automatically enter into the next step 2 seconds later. The system shuts down due to malfunction. The error module nixie tube repeatedly display “09” and “U6”, other module nixie tubes repeatedly display “09” and “J0”. If erroe occurs, please check if the valve is opened, and at the same time check if the connecting pipes between different modules are correctly connected. If all the modules shut down, then all the module nixie tube will display “09” and “oC” for once.

The whole unit has gone through the debugging, the system is in

stand-by status.

Instruction for Code and Operating Method

1.3 Parameters reference value for the normal operation of unit

No. Debug item Parameter name Unit Reference

System

parameters

ODU

parameters

Outdoor temperature ℃ ——

●When compressor starts, discharge temp in cooling mode is within 70~105 ℃ and at least

Compressor

discharge

temperature

10℃ higher than the high pressure saturation

℃

temp;

●As for temp in heating mode, it is within 65~90℃ and at least 10℃ higher than the high pressure saturation temp.

Duct type split Air conditioner Inverter Series

●In cooling mode, defrosting temp is 4~10 ℃

5 System low pressure ℃

14 Drainage system —— —

15 Others —— —

Communication

parameters

IDU

parameters

Defrosting

temperature

System high

pressure

Opening angle of

thermal EXV

Compressor working

current

Compressor’s IPM

temp

IDU ambient temp ℃ ——

Indoor heat

exchanger’s inlet

temp

Indoor heat

exchanger’s inlet

temp

Opening angle of

indoor EXV

Communication data —

lower than system’s high pressure value;

℃

●In heating mode, defrosting temp is about 2℃ different from system’s low pressure value.

●In cooling mode, the normal high pressure value is within 20℃~55℃. According to the change of ambient temp and system’s operating capacity, the high pressure value will be 10℃~30℃ higher than ambient temp. The higher ambient temp is, the smaller temp difference is. If ambient temp is

℃

25~35℃ in cooling mode, system’s high pressure value will be within 44~53℃.

●In heating mode, if ambient temp is above -5℃, system’s high pressure value is within 40~52℃. If ambient temp is low and many IDUs are turned

on, the high pressure will be lower.

●When ambient temp in cooling mode is 25~35℃, the low pressure value is 0~8℃.

●When ambient temp in heating mode is above

-5℃, the low pressure value is -15~8℃.

●In cooling mode, the thermal electronic expansion valve remains 480PLS.

PLS

●In heating mode, the adjustable opening angle of EXV is 60~480PLS. When compressor works normally, the current is

no more than 23.0A. When ambient temperature is below 35℃, IPM

℃

temperature is lower than 70℃. Maximum temperature is 80℃.

●According to ambient temp, for a same IDU in

℃

cooling mode, the inlet temp will be 1 ℃ ~7 ℃ lower than the outlet temp, and 4~9℃ higher than the low pressure value.

℃

●For a same IDU in heating mode, the inlet temp will be 10℃~20℃ lower than the outlet temp.

●In cooling mode, the opening angle of indoor EXV varies within 40~480PLS.

PLS

●In heating mode, the opening angle of indoor EXV varies within 70~480PLS.

Number of IDUs detected by software is the same with the actual number. No communication error.

Indoor unit can drain water out completely and smoothly. Condensate pipe has no backward slope of water; Water of outdoor unit can be drained completely through drain pipe. No water drop from unit base. Compressor and indoor/outdoor fan motor do not have strange noise. Unit can operate normally.

2 Malfunction List

2.1 Malfunction list for the IDU

Display

code

Content

Malfunction of

indoor unit

Indoor fan

protection

E-heater protection

Water overflow

protection

Display

code

Wrong number of indoor

unit for one-to-more indoor

one-to-more indoor unit Alarming due to bad air

The indoor unit model can’t

match with outdoor unit

Content

unit

Wrong series for

quality

model

Display

code

d9 Malfunction of jumper cap

Abnormal PCB for wired

Content

Malfunction of water

temperature sensor

Abnormal address for

indoor unit

controller

Duct type split Air conditioner Inverter Series

Power supply

db Special code: engineering debugging code

of wired controller

is faulted

Freeze prevention

protection

Mode shock

No main indoor unit

Insufficient power

supply

d1 Poor indoor PCB dC

Malfunction of ambient

temperature sensor

Malfunction of entry tube

temperature sensor

Malfunction of exit tube

temperature sensor

Malfunction of humidity

sensor

AJ Clean alarming for filter

Abnormal code-dialing

setting of capacity

Malfunction of air exhause

temperature sensor

Malfunction of indoor C0

sensor

Communication

malfunction

2.2 Status display table for indicators on main board of ODU

Display

code

Content

Malfunction of

outdoor unit

Low pressure

protection

Poor main board of

outdoor unit

Malfunction of

discharge

temperature sensor

for compressor 1

Air-mixing protection

for 4-way valve

High pressure is too

low

Maflunction of

defrosting

temperature sensor 2

Malfunction for

temperature sensor of

inlet tube of gas and

liquid separator

Abnormal clock of

system

Power voltage

protection for the

driven board of

compressor

Display

code

E1 High pressure protection E2

J0 Other module protection J1

Discharge high temperature

protection for compressor

Malfunction of high pressure

ambient temperature sensor

Malfunction for temperature

sensor of exit tube of gas and

liquid separator (exit tube A)

Malfunction driven board for

Reset protection for the driven

Content

sensor

High pressure ration

protection of system

Malfunction for outdoor

Malfunction of liquid

temperature sensor for

subcooler

compressor

module of compressor

Display

code

Content

Low-temperature

protection for dicharge

Loose protection for

discharge temperature

sensor for compressor 1

Malfunction of low

pressure sensor

Overcurrent protection for

compressor 1

Low pressure ratio

protection of system

Maflunction of defrosting

temperature sensor 1

Malfunction of gas

temperature sensor for

subcooler

Malfunction of gas exit

temperature sensor for

heat exchanger

Driven board of

compressor works

abnormally

Driven PFC protection of

compressor

Overcurent protection

for inverter

compressor

Overheating

protection for driven

IPM of compressor

Circuit malfunction of

driven current

detection for

compressor

Malfunction of driven

charging loop for

compressor

Preheat time is not

enough for

compressor

Wrong address for the driven board of

compressor

Malfunction of

pipeline for outdoor

unit

U6 Alarm due to abnormal valve U8

Driven IPM module protection

for compressor

Desynchronizing protection for

inverter compressor

Low voltage protection for

driven DC bus bar of

compressor

Failure start up for inverter

compressor

Capacity code of outdoor

unit/wrong setting of jumper

cap

Setting for indoor unit and

oudoor unit is succeeded

Malfunction of driven

temperature sensor for

compressor

High voltage protection

for driven DC bus bar of

compressor

Phase-losing of inverter

compressor

AC current protection for

inverter compressor

Insufficient refrigerant

protection

Malfunction of pipeline for

indoor unit

Wrong code-dialing

during emergency

operation

Duct type split Air conditioner Inverter Series

Display

code

CL Low rated capacity CF

A4 Oil return A5 On-line test A6

A7 Quit mode setting A8

Ad Limit opereation n0 SE setting for the operation n1

n7 Malfunction inquiry n8 Parameters inquiry nA Heat pump unit

nH Heating only model nC Cooling only model nE Negative code

nF Fan model

Content

Refrigerant-charging

is invalid

Driven

communication

malfunction between

main board and

inverter compressor

Alarming due to

wrong quanity of

outdoor unit

Energycy status of

module

Communication

malfunction between

indoor unit receiving

lamp board

Operational

parameter inquiry of

compressor

EU AA class energy efficiency test mode

Charge refrigerant by

hand

Startup debugging

confirmation of unit

Upper limit setting for

the collocation

matching ratio for

indoor unit and

outdoor unit

Display

code

Communication malfunction

CH High rated capacity CC

A2 Refrigerant recovery A3 Defrosting

AH Heating AL

AF Fan blow AJ Cleaning alarm for filter

for indoor unit, outdoor unit

and wired controller of indoor

Malfunction of main control

Distribution overflow of Ip

Long-distance emergency

Limit setting for the maximum

Content

unit

Malfunction of indoor

unit-lacking

Emergency status of

compressor

unit

address

Vacuum pump

mode

stop

ouput capacity

Display

code

C9 Emergency status of fan

CJ Address shock of syste

A0 Debugging for unit

A9 IPLV test

Ab Emergency stop

main board and inverter

number shock of indoor

number inqury for indoor

Content

Driven communication

malfunction between

compressor

Alarming due to

engineering series

unit

No malfunction of main

control unit

Heat pump function

setting

Charge refrigerant

automatically

Defrosting period K 1

setting

Engineering series

unit

3 Troubleshooting

3.1 Exception Analyzing and Troubleshooting（IDU）

3.1.1 “d1” Indoor circuit board error

Error display: IDU wired controller and IDU receive light board will display Error judgment condition and method:

Check if the reading of address chip and memory chip of IDU mainboard is normal. If the data of

address chip and memory chip cannot be read, it is abnormal

Possible reason：

■Address chip is abnormal

■Memory chip is abnormal. Replace main control board directly

Troubleshooting:

Duct type split Air conditioner Inverter Series

Replace main control board directly

3.1.2 “d3” Ambient temperature sensor error

Error display: IDU wired controller and IDU receive light board will display Error judgment condition and method:

Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge

the range of AD value, If the sampling AD value exceeds upper limit and lower limit in 5 seconds

continuously, report the error

Possible reason：

■Poor contact between ambient temperature sensor and terminal in mainboard interfac

■Ambient te

■Detecting circuit is abnormal

oubleshooting:

mperature sensor is abnormal

3.1.3 “d4” Inlet pipe temperature sensor error

Error display: IDU wired controller and IDU receive light board will display Error judgment condition and method:

Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge

the range of AD value. If the sampling AD value exceeds upper limit and lower limit in 5 seconds

continuously, report the error

Possible reason：

■Poor contact between inlet pipe temperature sensor and terminal in mainboard interfac

■Inlet pipe te

■Detecting circuit is abnor

oubleshooting:

mperature sensor is abnormal

mal

Duct type split Air conditioner Inverter Series

3.1.4 “d6” Outlet pipe temperature sensor error

Error display: IDU wired controller and IDU receive light board will display Error judgment condition and method:

Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge

the range of AD value. If the sampling AD value exceeds upper limit and lower limit in 5 seconds

continuously, report the error

Possible reason：

■Poor contact between outlet pipe temperature sensor and terminal in mainboard interf

■Outlet pipe temperature

■Detecting circuit is abnor

sensor is abnormal

mal

ace

Duct type split Air conditioner Inverter Series

3.1.5 “d9” Jumper cap error

Error display: IDU wired controller and IDU receive light board will display Error judgment condition and method: Possible reason：

If jumper cap model doesn’t match with mainboard, report the error

■Jumper cap is not installed

■Jumper cap model is wrong

■Detecting circuit is abnor

Troubleshooting:

mal

Duct type split Air conditioner Inverter Series

3.1.6 “dH” wired controller circuit board error

Error display: IDU wired controller and IDU receive light board will display Error judgment condition and method:

Wired controller IIC communication is abnormal

Possible reason：

■Communication of wired controller touch button board and display boar

■Read an

Troubleshooting:

d write of wired controller memory chip IIC is abnormal (when me

3.1.7 “dC” Capacity DIP switch setting error

d IIC is abnormal;

mory chip is existed);

Error display: IDU wired controller and IDU receive light board will display Error judgment condition and method:

If capacity DIP switch is set to the wrong position, report the error.

Possible reason：

■Capacity DIP switch is

■Detecting circuit is abnor

Troubleshooting:

set to the wrong position

mal

Duct type split Air conditioner Inverter Series

3.1.8 “db” Project debugging

Error display: ODU mainboard, IDU wired controller and IDU receive light board will display

Error judgment condition and method:

This is a status code of project debugging, not a error code. When IDU or ODU displays this code, it

means the unit is under debugging status and the IDU cannot be operated.

Troubleshooting: —— Possible reason：——

3.1.9 “L1” Indoor fan protection

Error display: IDU wired controller and IDU receive light board will display Error judgment condition and method:

Check if the rotation speed of IDU is too slow, or it stops rotation, or protection signal of outdoor fan

is transferred. If yes, it is judged that indoor fan protection occurs.

Possible reason：

■Motor stops operation or it is blocked

■IDU mainboard is abnormal

Troubleshooting:

Duct type split Air conditioner Inverter Series

3.1.10 “L4” Power supply overcurrent protection

Error display: IDU wired controller and IDU receive light board will display Error judgment condition and method:

Check if the power supply current from IDU to wired controller is normal. If power supply current is

too big, it is judged that the current is abnormal.

Possible reason：

Duct type split Air conditioner Inverter Series

■Power supply conducting wire of wired controller is

■IDU mainboard is abnor

■Mainboar

oubleshooting:

d of wired controller is abno

mal

rmal

short circuited

3.1.11 “L5” Freeze protection

Error display: IDU wired controller and IDU receive light board will display Error judgment condition and method:

Check IDU pipe temperature. When pipe temperature is too low, freeze protection will be activated

to prevent freezing damage of evaporator.

Possible reason：

■IDU filter and evaporator

■IDU motor i

■Refrigerant amount is insuff

■Ambient te

oubleshooting:

s blocked

mperature of IDU and ODU is too low

are dirty

icient

Duct type split Air conditioner Inverter Series

3.1.12 “LC” Mismatch of IDU and ODU models

Error display: IDU wired controller and IDU receive light board will display Error judgment condition and method:

When some IDUs or devices which cannot be identified by some ODUs are installed in the system,

mismatch error of IDU and ODU models will occur.

Possible reason：

■Mismatch of IDU and ODU

Troubleshooting:

When some IDUs or devices which cannot be identified by some ODUs are installed in the system (E.g. floor heating device is installed in modular DC inverter multiple VRF system), the error will occur. Please remove the relevant IDU devices or replace the ODU with suitable model.

3.2 Exception Analyzing and Troubleshooting（ODU）

3.2.1 Communication malfunction

Duct type split Air conditioner Inverter Series

3.2.2 High pressure protection

3.2.3 Low-pressure protection

Low pressure

protection

Duct type split Air conditioner Inverter Series

Measure whether the low pressure

is too low with manometer

yes

Check whether the refrigerantcharging volume is insufficient

Check whether gas valve and liquid

valve are open completely

YES

Check whether the panel of

outdoor unit is covered and sealed

well

YES

Measure

whether the

pressure switch

YES

Replace main

board of outdoor

is normal

Replace

pressure switch

Charge refrigerant according to the volume

on nameplate; check whether there is

leakage for the system

Open the valve

completely

Cover the panel

of outdoor unit

well

unit

Check whether the air can blow

smoothly at the heat exchanger of

indoor unit and outdoor unit

YES

Check whether the indoor fan

and outdoor fan can operate

YES

Check whether the indoor swing

blade is open completely

YES

Check whether the electronic

expansive value for indoor unit and

outdoor unit can operate normally

YES

Blockage for

system pipeline

Eliminate obstacles and

sundries

Measure the

circumstances of fan

motor and signal input

Measure the

circumstances of swing

motor and signal input

Engage valve and

coil

Mainly check the air inlet and air outlet

connecting indoor unit and main pipe, and the

expansive valve for indoor unit and outdoor unit.

Replace electronic expansion valve, dry

strainer,ect.

Duct type split Air conditioner Inverter Series

3.2.4 Discharge temperature protection

3.2.5 Mafunction of temperature sensor

Duct type split Air conditioner Inverter Series

3.2.6 Malfunction of sensor

3.2.7 Unit and main board can’t be energized

Unit and main board can’t

be energized

Measure whether voltage between pole L

and pole N of wiring board is 220V

YES

Check whether there’s power

supply for filter board

YES

Replace main board

of outdoor unit

Check whether it’s

the malfunction of

power supply for

wiring board

Replace filter

board

Gree FGR25Pd/DNa-X, FGR30Pd/DNa-X, FGR20Pd/DNa-X, FGR40Pd/D(2)Na-X Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual