Hitachi RPIH-6.0UNE1NH, RPIL-1.5UNE1NH, RPIM-3.0UNE1NH, RPIH-6.5UNE1NH, PPIL-1.0TNE1NH Service Manual

...

Download

Page 1

SERVICE MANUAL

HPS2017004HA

Page 2

Models

Ducted

Cassette

Floor ceiling

< Outdoor Units >

< Indoor Units >

RPIL-1.0UNE1NH RPIL-1.5UNE1NH RPIL-2.0UNE1NH RPIM-3.0UNE1NH RPIH-4.0UNE1NH RPIH-5.0UNE1NH RP

IH-6.0UNE1NH

RPIH-6.5UNE1NH

Heat pump type

RPIL-1.0TNE1NH RPIL-1.5TNE1NH RPIL-2.0TNE1NH RPIM-3.0TNE1NH RPIH-4.0TNE1NH RPIH-5.0TNE1NH RP

IH-6.0TNE1NH

RPIH-6.5TNE1NH

Cooling only type

RCI-1.5UNE1NH RCI-2.0UNE1NH RCI-3.0UNE1NH RCI-4.0UNE1NH RCI-5.0UNE1NH RCI-6.0UNE1NH RCI-6.5UNE1NH

Heat pump type

RCI-1.5TNE1NH RCI-2.0TNE1NH RCI-3.0TNE1NH RCI-4.0TNE1NH RCI-5.0TNE1NH RCI-6.0TNE1NH RCI-6.5TNE1NH

Cooling only type

RCI-1.5UNE1NH RCI-2.0UNE1NH RCI-3.0UNE1NH RCI-4.0UNE1NH RCI-5.0UNE1NH RCI-6.0UNE1NH RCI-6.5UNE1NH

Heat pump type

RCI-1.5TNE1NH RCI-2.0TNE1NH RCI-3.0TNE1NH RCI-4.0TNE1NH RCI-5.0TNE1NH RCI-6.0TNE1NH RCI-6.5TNE1NH

Cooling only type

RAS-1.0UNESNH1 RAS-1.5UNESNH1 RAS-2.0UNESNH1 RAS-3.0UNESNH1 RAS-4.0UNESNH1 RAS-5.0UNESMH1 RAS-6.0UNESMH1 RAS-6.5UNESMH1

Heat pump type

RAS-1.0TNESNH1 RAS-1.5TNESNH1 RAS-2.0TNESNH1 RAS-3.0TNESNH1 RAS-4.0TNESNH1 RAS-5.0TNESMH1 RAS-6.0TNESMH1 RAS-6.5TNESMH1

Cooling type

●

NOTE:

Heating and electric heating function are not available for cooling only models.

Page 3

DC-Inverter Air Conditioner Service Manual

Table of Contents

1. Option list ..................................................................................................................... 1

1.1Wired Remote Controller ......................................................................................... 1

1.2 Wireless Remote Controller .................................................................................. 10

1.3 IR receiver ............................................................................................................ 15

2.Troubleshooting .............................................................................................................. 16

2.1Trouble guide

........................................................................................................... 16

2.2 Fault codes

............................................................................................................. 21

Checking components ................................................................................................... 31

3.1 Check refrigerant system ...................................................................................... 31

3.2 Check parts unit ................................................................................................... 33

Disassembly and assembly for compressor and motor..................................................... 41

Control logic description................................................................................................. 52

Page 4

11..OOPPTTIIO

LLIISST

1. Wired Rmote Controller(Model：HCWA21NEWH)

1.1 Wired remote controller installation

in the grips,

Page 5

11..OOPPTTIIOONN LLIISST

Custom

Temperature measurement unit

Celsius

to access

custom

be displayed

custom settings mode

The method of setting the custom parameters:

Page 6

11..OOPPTTIIOONN LLIISST

enabled

revised

set point

all values will

be flicking at the display, press

all values will be flicking at the display, press.

settings.

remote located at an area with

different temperature than the room

correction

start

an offset

Page 7

11..OOPPTTIIOONN LLIISST

all values will be flicking at the display, press.

Upper cover assembly

the

screen of

1.2Wired

pressing

DOWN

setting values or to set the airflow direction.

setting value.

Page 8

11..OOPPTTIIOONN LLIISST

operation

swing

revision

setting setting setting

once for

available for specific

for

the

Custom-setting parameters b must be configured by installer or autorized person.

Basic operation

Page 9

11..OOPPTTIIOONN LLIISST

increases decreases

staff

reaches

increase

decrease

During the appliance in working mode

unabling

is the default setting

swing

swing swing

swing

Function set

Super mode

activated at

activate

with the working unit to activate the

Super mode

Silent mode

silent mode

operation

activate

during appliance operation

activate silent mode

Page 10

11..OOPPTTIIOONN LLIISST

With

improve comfort.

activate

be displayed

activated.

will disappear

lock buttons users setting overwrite.

disabled

activate

be displayed

;

staff

is displayed

perform

warning prompt.

available

actual

set.

enter

Page 11

11..OOPPTTIIOONN LLIISST

Single Timer ON/OFF

activate

During

are

setting.

timer

value.

Holding

will appear

appears,

with the same procedure.

Single Timer ON/OFF

timer

cancellation

Single Timer ON/OFF

Single Timer ON/OFF setting

settingSingle Timer ON/OFF

Single Timer ON/OFF

cancellation

Daily ON/OFF Timer

Single Timer ON/OFF

The Single, Daily and Weekly timer functions can not be set at the same time, if need TIMER ON/OFF work in the future time, please use WEEKLY TIMER function.

Note:

Page 12

11..OOPPTTIIOONN LLIISST

set

setting

is displayed

SETTING

SELECTION

setting,

is displayed

are flickering.

selection.

setting.

selection

setting

selected or

hour setting,

to cancel

setting.

setting is done with the same procedure as

need to.

setting,

selected

Page 13

11..OOPPTTIIOONN LLIISST

Remote controller

POWERFUL

Used to start or stop the fast cooling/heating. (Fast cooling operates at high fan speed with 16℃ set temp. automatically; Fast heating operates at auto fan speed with 30℃ set temp. automatically).

ON/OFF

The appliance will be started when it is energized or will be stopped when it is in operation, if you press this button.

The remote controller transmits signals to the system.

MODE

Press this button to select the operation mode.

AUTO

Used to enter fuzzy logic operation directly.

TIMER

Used to set or cancel the timer operation.

FAN

Used to select fan speed in sequence auto, quiet low, low, medium and high.

SLEEP

Used to set or cancel Sleep Mode operation.

Used to stop or start vertical adjustment louver swinging and set the desired left/right airflow direction.

10 LEFT/RIGHT

adjustment louver swinging and set the desired up/ down airflow direction.

Used to stop or start horizontal

8 UP/DOWN

Used to adjust the room temperature and the timer.

TEMP.

Note: ①Each mode and relevant function will be further specified in following pages.

②Heating and electric heating function are not available in single cooling only models. ③Pictures in the manual are for reference only, specifications are subject to the physical product.

Indication symbols on LCD:

Cooling indicator

Dry indicator

Fan only indicator

Heating indicator

Auto indicator

High fan speed

Medium fan speed

Low fan speed

Quiet fan speed

Display set temperature

Timer ON/OFF set hour

Signal transmit Battery indicator Timer ON indicator Timer OFF indicator

Button locked indicator

Auto fan speed Run indicator

Sleep indicator

Display set temp.indicator

Fan speed indicator

OFF indicator

RESET

Back to the factory defaults.

2. Wireless Rmote Controller (Model：HCRA31NEWH)

Page 14

11..OOPPTTIIOONN LLIISST

How to Use

To operate the room air conditioner, aim the remote controller to the signal receptor. The remote controller will operate the air conditioner at a distance of up to 8m when pointing at signal receptor of indoor unit.

Remote controller

How to Insert the Batteries

Remove the battery cover according to the arrow direction.

Insert new batteries making sure that the (+) and (-) of battery are matched correctly.

Reattach the cover by sliding it back into position.

Note:

Use 2 LR03 AAA(1.5volt) batteries. Do not use rechargeable batteries. Replace batteries with new ones of the same type when the display becomes dim.

If the batteries are not in use for a prolonged period of time, remove the batteries from the battery compartment to avoid the trouble. The battery can be used for about 6 months. If the Remote Control is not operated even when placing it near the receiver, replace 2 batteries with the new ones. Please do not use manganese battery because it may cause mal-function. Avoid extremely hot or cold locations such as placing it near or over a radiator, or in direct sunlight. Also avoid placing under fluorescent light. Do not let children play with the Remote Controller. To avoid interference, the indoor unit and the Remote Control unit should be at least 1m away from a TV set or a radio. In case more than two air conditioners are installed in the same room, it may interrupt individual operation.

CAUTION

Storage and Tips for Using the Remote Controller

The remote controller may be stored mounted on a wall with a holder.

Note: The remote controller holder is an optional part.

remote controller holder fixing.

remote controller mounting.

Note: you have selected.

The shape may differ from that of the remote controller holder

Page 15

11..OOPPTTIIOONN LLIISST

The operation modes changed in sequence:

The fan speed is changed in sequence:

FAN mode

Heating mode is NOT available for cooling only air conditioner.

At "FAN" mode, only "Auto" is not available. At "DRY" mode, Fan speed is set at "AUTO” automatically, "FAN" button is ineffective in this case.

Setting temperature

Turning on or off

AUTO , POWERFUL , TIMER and SLEEP operation modes will be specified in the following pages.

Changing modes during operation, sometimes the unit does not response at once. Wait 3 minutes.

Wait 3 minutes before restarting the appliance.

During heating operation, air flow is not discharged at the beginning. After 2－5 minutes, the air flow will be discharged until temperature of indoor heat exchanger rises.

16℃~30℃

Range of available set temperature

*HEATING, COOLING, DRY

unable to set

FAN

Note: Heating mode is NOT available for cooling only models.*

Press

Press button can change the unit operating status.

Result :

Press button once by once

Auto

High

Medium

FAN

COOL

DRY

HEAT

button

Raise temperature setting by 1℃.

Lower temperature setting by 1℃.

button Press

Result :

Low

Quiet Low

PRESS

Operation modes

�

Selecting mode

Press MODE button cancel AUTO mode.

Note: Temperature, airflow and direction are controlled automatically in AUTO mode.

AUTO mode

How to s et AUTO mode ?

Press the AUTO button.

Resu lt : Enters AUTO mode (fuzzy logic operation).

Mode and fan speed are automatically set based on the actual room temperature.

PRE SS

Page 16

11..OOPPTTIIOONN LLIISST

Your feeling

What you can do in AUTO mode?

Button

Adjust

Uncomfortable because of unsuitable air flow volume.

Uncomfortable because of unsuitable flow direction.

How to cancel the AUTO mode?

Press the

Resu lt :

Indoor fan speed alternates among Auto, Low,Medium and High each time this button is pressed.

Press it once, the horizontal adjustment louver(vertical adjustment louver) swings to change vertical airflow direction(horizontal airflow direction). Press it again, swings stops.

button.

The AUTO mode will be cancelled.

PRREESSSS

Note:

POWERFUL button is not available in AUTO mode.

POWERFUL mode

POWERFUL mode is used to start or stop fast cooling or heating only when the unit is on.

How to set POWERFUL mode?

Press POWERFUL button at the cool, dry and fan mode.

Resu lt :

At hig h fa n sp ee d, the set temp er at ure auto ma ti ca lly to 16℃.

Press POWERFUL button at the heat mode.

Resu lt :

At hig h fa n sp eed, the set temp er at ure auto ma ti ca lly to 30℃.

How to cancel POWERFUL mode?

Press POWERFUL, MODE, FAN, ON/OFF button.

Resu lt :

The display return to the original mode.

In POWERFUL mode, you can set temperature, airflow direction or timer.

Escape from POWERFUL mode.

PRE SS

Timer mode

It is convenient to set the timer on with TIMER button when you go out in the morning to achieve a comfortable room temperature at the time you get home. You can also set timer off at night to enjoy a good sleep.

Page 17

11..OOPPTTIIOONN LLIISST

How to canc el SLEE P mode ?

Press AUTO, MODE, SLEEP, ON/OFF or FAN button.

Result :

Escape from SLEEP mode.

PRESS

Note: It is similar to set TIMER OFF , you can make the appliance switch off automatically at your desired time.

Press the or button.

Once to increase or decrease the time setting by 1 hour.

Resu lt :

and stop flashing.

When your desired time displayed on LCD, press the TIMER button and confirm it.

Resu lt :

Press TIMER button when the unit is off.

How to cancel TIMER ON ?

Press the TIMER button.

Resu lt :

The indicator disappears, the timer on mode has been canceled.

How to set TIMER ON ?

Resu lt :

and flash on the LCD.

PRESS

SLEEP mode can be set in COOLING, HEATING or DRYING mode.

This function gives you a more comfortable environment for sleep.

The appliance will stop operation automatically after operating for 8 hours. Fan speed is automatically set at low speed.

SLEEP mode

How to s et SLEE P mode ?

Each time SLEEP button is pressed.

Resu lt :

SLEEP function will be started.

PRESS

Page 18

11..OOPPTTIIOONN LLIISST

IR Receiver (Model：HRBA31NEGH)

Please carefully read the Installation Manual supplied with the signal receiver, and perform installation in accordance with these instructions properly.

Important Notice

Parts Introduction

Install the receiver onto the wall or ceiling near the indoor unit. Connect it with the indoor unit by the connect wire.It should be used with the wireless remote controller. The wireless remote controller can send commands to the wireless receiver .Name of part is shown as follows:

2.Installation.

Indoor Unit PCB

The connection of the connecting wire

Along the arrow direction into the ceiling that with a hole punched

The Installation of the Receiver

After the Installation is completed

●Cut out a hole at the suitable place of the false ceiling with a

diameter of 95mm.

●Place

the connecting wire on the false ceiling.

●Incert the connecting wire into the indoor unit .

Connect the wires

with the indoor PCB.

●Connect the other terminal with the receiver, details please see

the indoor unit wiring diagram.

●Adjust the spring

of the receiver and install the receiver into

the hole that have punched . After installation, the appearance as showed in the figure below.

●Avoid installing it close to the fluorescent lamp.

1.Selecting the installation location.

Please install it in the ceiling and close to the electronic control box of indoor unit.

The False Ceiling

Signal Receiver

The False Ceiling

1 Run indicator (Red)

It lights on during operation. It lights off during SLEEP mode.

2 Emergency switch

The filter clean indicator when the switch is pressed. The unit will stop operation if pressing the button, if pressing for more than

5s, the unit will operate in cooling mode.

3 Timer indicator (Green)

It lights on when timer is in use. It lights off when timer finishes.

4 Filter clean (Yellow) It lights on when the filter should

be cleaned.

5 Defrost indicator (Green)

It lights on during defrosting. It lights off when defrosting is

finished.

6 Buzzer It rings when the signal from remote controller is received.

7 Infrared receiver Receives signal from the remote controller.

How to Install

Sending Commands from Controller The operation commands are sent by pressing the required operation switch by aiming the transmitter of the controller at the receiver of the indoor unit. When the commands are sent correctly, the buzzer on the wireless receiver goes off once. In case that the buzzer does not go off although the commands are sent, the commands are not received by the indoor unit. In such a case, sent the commands again. Sometimes the buzzer does not be heard in case of the noise. In some special cases, the indoor unit does not response to the commands of the wireless remote controller. The buzzer beeps 3 times.

Operation

Max. permission distance up to 8m.

Signal Receiver

Wireless Remote Controller

The figures in this manual are based on the external view of a standard model. Consequently, the shape may differ from that of the air conditioner you have selected.

It can be set or canceled by professional after-sale staff.

Virtual Line between Transmitter and Receiver

Page 19

22.

TTR

2.Trou

2.1Trou

When

remote

How

Indo

(1)Fault

(2)Faul

Lam

fault co

fig. belo

For

DEFRO

UUBBLLEES

leshooti

ble guide

the air co

ontroller

to check

r Unit

codes ind

t codes in

RUN(LE

e ten digi

xample，

T contin

OOOOTTIIN

nditioner f

r display

ault code

cated by

icated by

2 ,red) a

number, l

ault code

e flash 3

ilure occ

anel.

.1 FAULT CO

LED lam

d Lamp

mp DEF

36: led R

imes,repo

rs, the fa

ired remote

controlle

DE DISPLAY

s on displ

EFROST

OST dis

N& defro

rts No. 36

lt code wi

r (see figu

ON WIRE R

y panel

（LED5 ,g

lay fault c

t flash 3 ti

fault.

l displays

re below)

MOT CONT

een）flas

de single

es at th

on control

OLLER

ing，Lam

digit num

same tim

board , wi

p RUN dis

ber (as sh

e, and led

play

own

Page 20

22.

TTR

LED FA

UUBBLLEES

FA LSH CONTRO

OOOOTTIIN

OL：flash 300m

mS(T1)，off 3000mS(T2)，after 2000mS(T3)fauult code repeat ddisplays. (as shown below)

Displlay panel

Run indicator (Red)

Indicates the fault code ten digital number.

Defrost indicator (Green)

Indicates the fault code singal digital number.

D E FR O S T

F I L TE R

T I M E

R U N

E M ER G E N C Y

2 1

T1 TT2

Fig.222 LED ALSHH CONTROL

Page 21

22.

TTR

LED1

outdo

Whe

When

Failure

Syste

LED la

UUBBLLEES

indicate fau

or drive cont

n LED3 is off,

n LED3 is on,

n LED3 is flic

es display w

m protect co

amps will off

OOOOTTIIN

lt code ten d

trol fault .

, LED1 and L

kering and L

with 5s interva

odes display

f when there

digit number,

LED 2 indicat

LED 2 indica

LED1,LED 2

al .It means L

method is th

is no failure

LED2 indica

te main cont

te drive cont

are all off, in

LED will off 5

he same with

e ,protect or p

te fault code

trol failure co

dicate comp

5s to report n

main contro

preheating.

e single digit

ode.

ressor is pre

next failure c

ol failure code

number and

eheating .

code .

e .

LED3 indicaate

Fault

Outddoor Unit

DC-Innverter split

code displa

aairconditone

r 1.0/1.5/2.0/3.0

yys by LED laamps on out

Hp(Main

control boar

ddoor main coontrol board.

d upside-

doww

There are 3 LED laamps on control board, LEED1,LED2 aand LED3.

Page 22

22.

TTR

For e

（2）

Fault

UUBBLLEES

ample, outd

INVERTER

code will di

OOOOTTIIN

oor main co

oor drive fa

play on digi

trol fault 32

lt 32:

SPLIT AIR CONDITI

al tube boa

ONER

(4.0/5.0/6.0/6.5HP)：

Digital T

Outdoo

Control Board

Page 23

22.

TTR

UUBBLLEES

OOOOTTIIN

Page 24

22.

TTRROOUUBBLLEESSHHOOOOTTIINNG

2.2 Fault codes

The following is the fault code table of outdoor.

Sheet 1 Outdoor Fault code

Fault code

Fault Description Possible Reason of Abnormality How to Deal With Remarks

Outdoor ambient temperature sensor fault

1.The outdoor ambient temperature sensor connect loose;

2.The outdoor ambient temperature sensor is failure;

3.The sampling circuit is failure

1.Reconnect the outdoor ambient temperature sensor;

2.Replace the outdoor ambient temperature sensor omponents;

3.Replace the outdoor control board components.

Outdoor coil temperature sensor fault

1.The outdoor coil temperature sensor connect loose;

2.The outdoor coil temperature sensor is failure;

3.The sampling circuit is failure

1.Reconnect the outdoor coil temperature sensor;

2.Replace the outdoor coil temperature sensor components;

3.Replace the outdoor control board components.

The unit over-current turn off fault

1.Control board current sampling circuit is failure;

2.The current is over high because of the

supply voltage is too low;

3.The compressor is blocked;

4. Overload in cooling mode;

5.Overload in heating mode.

1. Replace the electrical control board components;

2. Normally protection;

3. Replace the compressor;

4. Please see the Note 3;

5. Please see the Note 4.

4 EEprom Data error

1.EE components is failure; 2.EE components control circuit failure;

3.EE components insert incorrect

1.Replace the EE components;

2.Replace the outdoor control board components;

3.Reassembly the EE components.

Cooling freezing protection(the indoor coil temperature is too low) or heating overload(indoor coil temperature is too high)

1.The indoor unit can not blow air normally;

2.The room temperature is too low in cooling mode or the room temperature is too high in heating;

3.The filter is dirty;

4.The duct resistance is too high to

result in low air flow;

5.The setting fan speed is too low;

6. The indoor unit is not standard

installed, air inlet is too near with air outlet .

1.Check the indoor fan, indoor fan motor and evaporator whether normally;

2. Normally protection;

3.Clean the filter;

4.Check the volume control

valve,duct length etc;

5.Set the speed with high speed;

6.Reinstall the indoor unit refer to

the user manual to change the distance between the indoor unit and the wall or ceiling.

Page 25

22.

TTRROOUUBBLLEESSHHOOOOTTIINNG

Fault code

Fault Description Possible Reason of Abnormality How to Deal With Remarks

The communication fault between the indoor unit and outdoor unit

1.The connection cable connect wrong between the indoor unit and outdoor unit;

2.The communication cable connect loose;

3.The communication cable is fault;

4.The indoor control board is fault;

5.The outdoor control board is fault;

6.Communication circuit fuse open;

7.The specification of communication cable is incorrect.

1.Reconnect the connection cable refer to the wiring diagram;

2.Reconnect the communication cable;

3.Replace the communication cable;

4.Replace the indoor control board;

5.Replace the outdoor control board;

6.Check the communication circuit, adjust the DIP switch and the short-circuit fuse.

7.Choose suitable communication cable refer to the user manual

voltage absent phase

1.Three-phase power is abnormal;

2.The outdoor wiring connect wrong;

3.The outdoor control board is failure.

1. Normally protection

2. Check the wiring connection refer to

the wiring diagram;

3. Replace the outdoor control board

Application of three-phase power supply models

Compressor overheat protector device

1.The wiring of the overload protector connect loose.

2. The overload protector is failure .

3. The refrigerant is not enough;

4. The installation pipe is too long than normal, but not add the enough refrigerant;

5. The expansion valve is failure;

6. The outdoor control board is failure

1. Reconnect the wiring of the overload protector;

2. Replace the overload protector;

3. Check the welding point of the unit to confirm whether it is leakage, and then recharge the refrigerant;

4. Add the refrigerant;

5. Replace expansion valve;

6. Replace the outdoor control board.

the high pressure switch operate or the unit turn off for high pressure protection

1.The wiring of the high pressure protector connect loose;

2.The high pressure protector is failure;

3.The outdoor control board is abnormal;

4. Overload in cooling;

5. Overload in heating.

1.Reconnect the wiring the high pressure protector;

2. Replace the high pressure protector;

3. Replace the outdoor control board;

4. Please refer to the Note 3;

5. Please refer to the Note 4.

Applied to models with high pressure switch or pressure sensor

the low pressure switch protection or the unit turn off for low pressure protection

1.The wiring of the low pressure switch connect loose ;

2.The low pressure switch is failure;

3.The refrigerant is not enough;

4.The expansion valve failure in heating mode;

5.The outdoor control board is abnormal.

1. Reconnect the wiring of the low pressure switch;

2. Replace the low pressure switch;

3.Check the welding point to confirm whether the unit is leakage, and then add some refrigerant;

4. Replace the expansion valve;

5. Replace the outdoor control board.

Applied to models with low pressure switch or pressure sensor

overload protection in cooling mode

System overload Please refer to the Note 3.

Discharge temperature sensor fault

1.The wiring of the discharge temperature sensor connect loose;

2.The discharge temperature sensor is failure;

3.The sampling circuit is abnormal.

1.Reconnect the wiring of the discharge temperature sensor;

2.Replace the discharge temperature sensor;

3.Replace the outdoor control board.

Page 26

22.

TTRROOUUBBLLEESSHHOOOOTTIINNG

Fault code

Fault Description Possible Reason of Abnormality How to Deal With Remarks

AC voltage is abnormal

1.The AC voltage>275V or <160V.

2.The AC voltage of sampling circuit on the driver board is abnormally

1. Normally protection, please check the supply power;

2. Replace the driver board.

Suction temperature sensor fault

1.The wiring of the suction temperature sensor connect loose;

2. The suction temperature sensor is failure;

3. The sampling circuit is abnormally.

1.Reconnect the wiring of the suction temperature sensor;

2.Replace the suction temperature sensor;

3.Replace the outdoor control board.

The defrosting sensor fault

1.The wiring of the defrosting sensor connect loose;

2.The defrosting sensor is failure;

3.The sampling circuit is abnormally

1. Reconnect the wiring of the defrosting

sensor;

2. Replace the defrosting sensor;

3. Replace the outdoor control board.

45 IPM fault

There are many reasons for this failure, If you need further analysis, fault code of the driver board is needed by watching the driver board fault led. Analysis can be further to know why and how to operate. Specific see table 5, table 6.

See attached "analysis of the driving board fault".

IPM and control board communication fault

1.The cable between the control board and the driver board connect loose;

2.The cable between the control board and the driver board is failure;

3.The driver board is failure

4.The control board is failure

1.Reconnect the cable between the control board and the driver board;

2.Replace the communication cable between the control board and the driver board;

3.Replace the driver board;

4.Replace the control board.

Discharge temperature too high fault

1. The refrigerant of the unit is not enough;

2.The refrigerant of the unit is not enough due to add the length of the installation pipe

3.Throttling service is failure;

4.The outdoor ambient temperature is too high.

1.Check the welding point to confirm whether the unit has exist leakage point, and then add some refrigerant.

2.Add some refrigerant refer to the installation user manual;

3.Replace the throttling service(such as capillary, expansion valve)

4. Normally protection.

the outdoor DC fan motor fault (upper fan motor)

1.The wiring of the up DC fan motor connect loose;

2. The cord of the up DC fan motor is failure;

3.The up DC fan motor is failure;

4.The drive circuit of the up DC fan motor is failure;

5. The outdoor fan has been blocked.

1.Reconnect the wiring of the up DC fan motor;

2.Replace the up DC fan motor;

3. Replace the up DC fan motor;

4.Replace the driver board of the fan motor;

5. Check the outdoor fan and ensure the outdoor fan can run normally.

the outdoor DC fan motor fault (down fan motor)

1.The wiring of the down DC fan motor connect loose;

2.The cord of the down DC fan motor is failure;

3. The down DC fan motor is failure;

4. The drive circuit of the down DC fan motor is failure;

5. The outdoor fan has been blocked.

1. Reconnect the wiring of the down DC fan motor;

2. Replace the down DC fan motor;

3.Replace the down DC fan motor;

4.Replace the driver board of the fan motor;

5. Check the outdoor fan and ensure the outdoor fan can run normally.

The unit turn off due to the IPM board over heating fault

1.The outdoor ambient is too high;

2. The speed of the out fan motor is too low if the fan motor is AC fan motor;

3.The outdoor unit has been installed without standard;

4.The supply power is too low.

1. Normally protection;

2. Check the fan capacitor, and replace the fan capacitor if it is failure;

3. Reinstalled the outdoor unit refer to the installation user manual;

4.Normally protection.

Page 27

22.

TTRROOUUBBLLEESSHHOOOOTTIINNG

Fault code

Fault Description Possible Reason of Abnormality How to Deal With Remarks

the refrigerant of the unit is not enough fault

The refrigerant of the unit is not enough

Discharge the refrigerant and charge the refrigerant refer to the rating label

4-way valve commutation failure fault

1.The wiring of the 4-way valve coil connect loose;

2.The 4-way valve coil is failure;

3.The 4-way valve is failure;

4.The driver board of the 4-way valve is failure

1. Reconnect the wiring of the 4-way valve;

2. Replace the 4-way valve coil;

3. Replace the 4-way valve;

4.Replace the driver board of the 4-way valve.

Page 28

22.

TTRROOUUBBLLEESSHHOOOOTTIINNG

The following is the fault code table of indoor.

Sheet 2 Indoor fault code

Fault

code

Fault Description Possible Reason of Abnormality How to Deal With Remarks

Drainage protection

1. The water level of the drain pan exceed safe level;

2. The cable of the water level switch connect loose;

3.The water level switch is failure;

4. The control board is failure.

1.1 Check whether there are something to block the drain hose or the height of the drain hose is too high;

1.2 Check the water pump and replace the water pump if the water pump is failure;

2. Reconnect the cable of the water level switch refer to the wiring diagram;

3. Replace the water level switch;

4. Replace the control board.

Communication between Indoor & Outdoor unit Fault

1. The connection cable between the indoor unit and the outdoor unit connect wrong;

2.The communication cable connect

loose;

3.The communication cable between

the indoor unit and the outdoor unit is failure or the cable between the indoor control board to terminal is failure or the cable between the outdoor control board to the terminal is failure;

4. The indoor control board is failure;

5. The outdoor control board is failure.

1. Reconnect the connection cable refer to the indoor and outdoor wiring diagram;

2. Reconnect the communication cable refer to the indoor and outdoor wiring diagram;

3. Replace the communication cable refer to the indoor and outdoor wiring diagram;

4. Replace the indoor control board;

5. Replace the outdoor control board.

Indoor fan motor fault

1. The cable of the indoor fan motor connect loose;

2. The cable of the indoor fan motor is failure;

3.The indoor fan motor is failure;

4. The indoor control board is failure.

1. Reconnect the cable of the fan motor;

2. Replace the cable of the fan motor;

3. Replace the fan motor;

4. Replace the indoor control board;

5. Check the indoor fan and ensure the indoor fan can run normally.

Indoor EEPROM Data 1 fault

1.Indoor EE components is failure;

2.The control circuit of the EE

components is failure;

3.The EE components has been inserted with opposite direction.

1. Replace the EE components;

2. Replace the indoor control board;

3. Reassembly the EE components of the indoor control board.

Indoor EEPROM Data 2 error

EE in MCU is failure,the unit can run ,but the function user has set is ineffective.

Replace EE data in MCU.

Indoor ambient Temperature Sensor Fault

1. The cable of the room temperature sensor connect loose;

2. The room temperature sensor is failure;

3. The sampling circuit is abnormally.

1.Reconnect the cable of the room temperature sensor;

2. Replace the room temperature sensor;

3. Replace the indoor control board.

Page 29

22.

TTRROOUUBBLLEESSHHOOOOTTIINNG

Fault

code

Fault Description Possible Reason of Abnormality How to Deal With Remarks

Evaporator Middle Temperature Sensor Fault

1.The cable of the coil temperature sensor of the evaporator is failure;

2. The coil temperature sensor of the evaporator is failure;

3. The sampling circuit is abnormally

1. Reconnect the cable of the coil temperature sensor of the evaporator;

2. Replace the coil temperature sensor of the evaporator;

3. Replace the indoor control board.

(254)

Communication

between main

control board

&Wiring remote

controller Fault

（display on

wiring remote

controller）

1. The wiring between the wiring controller to the indoor control board connect loose;

2. The sequence of the wiring between the wiring controller to the indoor control board is wrong;

3. The wiring between the wiring controller to the indoor control board is failure;

4.The wiring controller is failure;

5. The indoor control board is abnormally

1.Reconnect the wiring between the wiring controller to the indoor control board;

2.Replace the wiring between the wiring controller to the indoor control board;

3.Replace the wiring between the wiring controller to the indoor control board;

4. Replace the wiring controller;

5. Replace the indoor control board

Communication

between main

control board

&display board

Fault（displays on

display board）

1.The wiring between the display board to the indoor control board connect loose;

2.The sequence of the wiring between the display board to the indoor control board is wrong;

3.The wiring between the display board to the indoor control board is failure;

4. The display board is failure;

5. The indoor control board is failure.

1. Reconnect the between the display board to the indoor control board;

2. Replace the wiring between the display board to the indoor control board;

3. Replace the wiring between the display board to the indoor control board;

4. Replace the display board;

5. Replace the indoor control board.

NOTE 1:

If the indoor unit can not turn on or the indoor unit turn off itself after 30s, at the same time the unit do

not display the fault code, please check the fire and the socket of the control board.

Note 2:

If the indoor unit display the 75,76,77,78 fault code after you turn on the unit, please check the TEST

seat of the indoor control board or the TEST detection circuit whether exists short circuit.

Page 30

22.

TTRROOUUBBLLEESSHHOOOOTTIINNG

Note 3:Overload in cooling mode

overload in cooling mode

sr. The root cause Corrective measure

1 The refrigerant is excessive

Discharge the refrigerant, and recharge the refrigerant refer

to the rating label

2 The outdoor ambient temperature is too high Please use within allowable temperature range

The air outlet and air inlet of the outdoor unit is

short-circuit

Adjust the installation of the outdoor unit refer to the user

manual

4 The outdoor heat exchanger is dirty, such as condenser

Clean the heat exchanger of the outdoor unit, such as

condenser

5 The speed of the outdoor fan motor is too low Check the outdoor fan motor and fan capacitor

6 The outdoor fan is broken or the outdoor fan is blocked Check the outdoor fan

7 The air inlet and outlet has been blocked Remove the blocked thing

8 The expansion valve or the capillary is failure Replace the expansion valve or the capillary

Note 4:Over load in heating mode

Overload in heating mode

sr. The root cause Corrective measure

1 The refrigerant is excessive

Discharge the refrigerant, and recharge the refrigerant refer

to the rating label

2 The indoor ambient temperature is too high Please use within allowable temperature range

The air outlet and air inlet of the indoor unit is

short-circuit

Adjust the installation of the indoor unit refer to the user

manual

4 The indoor filter is dirty Clean the indoor filter

5 The speed of the indoor fan motor is too low Check the indoor fan motor and fan capacitor

6 The indoor fan is broken or the outdoor fan is blocked Check the indoor fan

7 The air inlet and outlet has been blocked Remove the blocked thing

8 The expansion valve or the capillary is failure Replace the expansion valve or the capillary

Sheet 3 Overload in cooling mode

Sheet 4 Overload in heating mode

Page 31

22.

TTRROOUUBBLLEESSHHOOOOTTIINNG

Sheet 5 Drive Fault code(1.0/1.5/2.0/3.0HP）

Fault code

Fault Description

Possible Reason of Abnormality

How to Deal With

1 Inverter DC voltage overload fault

1.Power supply input too high or too low;

2.Driver board fault.

1.Check power supply

2.Change driver board.

2 Inverter DC low voltage fault 3 Inverter AC current overload fault 4 Out-of-step detection

1.Compressor phase lost；

2.Bad driver board components；

3.The compressor insulation fault

1.Check compressor wire connect；

2.Change driver board；

3.Change compressor.

Loss phase detection fault (speed pulsation)

Loss phase detection fault (current imbalance)

7 Inverter IPM fault (edge) 1.System overload or current

overload;

2.Driver board fault.

3.Compressor oil shortage, serious

wear of crankshaft ;

4.The compressor insulation fault

1.Check the system .

2.Change driver board;

3.Change the compressor;

4.Change the compressor.

8 Inverter IPM fault (level) 9 PFC_IPM IPM fault (edge)

10 PFC_IPM IPM fault (level)

11 PFC power detection of failure

1.The power supply is not stable ;

2.The instantaneous power failure ;

3.Driver board failure.

1.Check the power supply.

2.Not abnormal.

3.Change the driver board.

PFC overload current detection of

failure.

1.System overload, current too high;

2.Driver board failure；

3.PFC failure；

1.Check the system;

2.Change the driver board;

3.Change the PFC.

13 DC voltage detected abnormal .

1.Input voltage is too high or too low;

2.Driver board failure；

1.Check the power supply.

2.Change the driver board;

14 PFC LOW voltage detected failure. 15 AD offset abnormal detected failure.

Driver board failure. Change the driver board.

16 Inverter PWM logic set fault. 17 Inverter PWM initialization failure 18 PFC_PWM logic set fault. 19 PFC_PWM initialization fault. 20 Temperature abnormal.

Shunt resistance unbalance adjustment fault

22 Communication failure.

1.Communication wire connect not well.

2.Driver board failure.

3.Control board failure.

1.Check the wiring.

2.Change the driver board.

3.Change the control board.

23 Motor parameters setting of failure Initialization abnormal. Reset the power supply.

25 EE data abnormal Driver board EEPROM abnormal

1.Change EEPROM；

2.Change driver board.

26 DC voltage mutation error

1.Power input changes suddenly

2.Driver board failure

1.Check power supply，to provide stable power supply；

2. Change driver board.

27 D axis current control error

1.System overload，phase current is

too high;

2.Driver board failure

1.Check system if normally.

2.Check stop valve if is open;

3. Change driver board.

28 q axis current control error

1.System overload，phase current is too high；

2.Driver board failure

1.Check system if normally.

2.Check stop valve if is open;

3. Change driver board.

Saturation error of d axis current control integral

1. System overload suddenly;

2. Compressor parameter not suitable;

3. Driver board failure

1.Check system if normally.

2.Check stop valve if is open;

3. Change driver board.

Saturation error of q axis current control integral

1. System overload suddenly;

2. Compressor parameter not

suitable;

3. Driver board failure

1.Check system if normally.

2.Check stop valve if is open;

3. Change driver board.

Page 32

22..TTRROOUUBBLLEESSHHOOOOTTIINNG

Sheet 6 Drive Fault code (4.0/5.0/6.0/6.5HP)

Fault code

Fault Description

Possible Reason of Abnormality

How to Deal With

Q axis current detection, step out of failure

1. compressor wire connect not well;

2. Bad driver board components;

3. Compressor start load is too large;

4.Compressor demagnetization;

5.Compressor oil shortage, serious wear of crankshaft.;

6.The compressor insulation fault

1. Check compressor wire;

2. Change driver board ;

3.Turn on the machine after pressure balance again;

4. Change Compressor;

5. Change the Compressor;

6. Change the Compressor.

Phase current detection, out of step

1.Compressor voltage default phase;

2.Bad driver board components;

3.The compressor insulation fault

1.Check compressor wire connection;

2.Change the driver board;

3.Change the Compressor.

Initialization, phase current imbalance

Bad driver board components. Change driver board .

Speed estimation, step out of failure

1.Bad driver board components;

2.Compressor shaft clamping;

3.The compressor insulation fault.

1.Change driver board ;

2.Change the Compressor ;

3.Change the Compressor .

5 IPM FO output fault

1.System overload or current overload.

2.Driver board fault;

3. Compressor oil shortage,serious wear of crankshaft;

4.The compressor insulation fault.

1.Check the air-conditioner system;

2.Change the driver board;

3.Change the Compressor;

4. Change the Compressor.

Communication between driver board and control board fault

1.Communication wire connect not well;

2.Driver board fault;

3.Control board fault;

1.Check compressor wire connect.

2.Change the driver board;

3.Change the control board ;

AC voltage,overload voltage

1.Supply voltage input too high or too low;

2.Driver board fault;

1.Check power supply;

2.Change the driver board;

DC voltage,overload voltage

1.Supply voltage input too high ;

2.Driver board fault;

1.Check power supply;

2.Change the driver board;

9 AC voltage imbalance Driver board fault; Change the driver board;

The PFC current detection circuit fault before compressor is ON

Bad driver board components; Change the driver board

AC voltage supply in outrange

1.Power supply abnormal, power frequency out of range;

2.Driver board fault;

1.Check the system;

2.Change the driver board;

Products of single-phase PFC over-current, FO output low level

1.System overload, current too large;

2.Driver board fault;

3.PFC fault.

1.Check the system;

2.Change the driver board;

3.Change PFC.

Inverter over current (3-phase power supply air conditioners)

1.System overload, current too large;

2.Driver board fault;

3.Compressor oil shortage, serious

wear of crankshaft;

4.The compressor insulation fault.

1.Check the system;

2.Change the driver board;

3.Change the Compressor;

4.Change the Compressor.

13 Inverter over current

1.System overload, current too large;

2.Driver board fault;

3.Compressor oil shortage,serious wear of crankshaft;

4.The compressor insulation fault.

1.Check the system;

2.Change the driver board;

3.Change the Compressor;

4.Change the Compressor.

PFC over current(single-phase air-conditioner)

1.System overload, current too large;

2.Driver board fault;

3.PFC fault.

1.Check the system;

2.Change the driver board;

3.Change PFC. Phase imbalance or phase lacks or the instantaneous power failure (only for 3-phase power supply air conditioners)

1.3-Phase voltage imbalance;

2.The 3-phase power supply phase lost;

3.Power supply wiring wrong;

4.Driver board fault.

1,Check the power supply;

2.Check the power supply;

3.Check the power

supply

wiring

connect;

4.Change the driver board.

The instantaneous power failure detection

1.The power supply is not stable ;

2.The instantaneous power failure ;

3.Driver board fault;

1.Check the power supply.

2.Not fault.

3.Change the driver board;

Page 33

22..TTRROOUUBBLLEESSHHOOOOTTIINNG

Fault code

Fault Description

Possible Reason of Abnormality

How to Deal With

16 Low DC voltage 200V

1.Voltage input too low ;

2.Driver board fault.

1.Check the power supply.

2.Change the driver board.

Driver board read EE data error

1.EEPROM has no data or data error;

2.EEPROM circuit fault.

1,Change EEPROM component; 2,Change the driver board.

PFC chip receive data fault

Abnormal communication loop Change the drive board.

PFC soft start abnormal

Abnormal PFC drive loop Change the drive board.

The compressor drive chip could not receive data from PFC chip.

Communication loop fault. Change the drive board.

Page 34

3. Chec

3.1 Che

TEST SYS

Con

Tool:

Te ch

3.CHECKING COMPONENTS

ing com

k refrig

EM FLO

itions: ①

C② T

Pressure

ique: ①

SEE

FEEL

TEST

ponents

rant sys

ompressor

he air con

auge

ee ② f

----- Tub

----- The

----- Test

is running.

ition should

el ③ test

defrost.

ifference

pressure.

be installe

etween tub

in good v

’s tempera

ntilation.

ure.

Page 35

.. CCHHEECCKKIINNGG CCOOMMPPOONNEENNTTS

Test system flow

Cooling mode

Test system

pressure.Does the low

pressure normal at

service part ?

The pressure on the high side.

The pressure on the low side.

Recharge refrigerant

after air purging with

the vacuum

pump.Does the low

pressure nomal over

again?

Air remaining at the refrigerant system.

yes

The system wants

refrigerant.The service

people must be ration

refrigeran.Is the low

pressure rise ?

Recharge refrigerant .

yes

The refrigerant system

blocked.Please check

（the Cap illary Tube or

electronic expansion

valve)Is it blocked?

Unsold er the capillary tube ASS'Y(or electronic expansion valve).T he capilla ry tube1 is blo wn by N

Check check valve and 4way valve.

If the pressure is

close to static

pressure?

4-way valve collude or compressor exhaust very ebb.

yes

Heating mode

Test system pressure.Does the high pressure normal at service part ?

The pressure on the high side.

The pressure on the low side.

Recharge refrigerant after air purging with the vacuum pump.Does the high pressure normal over again?

Air remaining at the refrigerant system.

yes

The system wants refrigerant.The service people must be ration refrigerant .Is the high pressure rise in heating mode?

Recharge refrigerant

yes

If the pressure is close to static pressure?

4-way valve collude or compressor exhaust every ebb.

yes

Check heat exchanger and 4-way valve.

The capillary tube blocked.Unsolder the capillary tube ASS'Y.The capillary tube1 and capillary tube2 is blown by N

Remove the back panel."see"the capillary tube1 and capillary tube2.Is it defrosting?

yes

Page 36

3.2 Che

k parts

INDOOOR FAN MOTOR

Ducted

1.0/1.5/3.0/4.0/5.0/6.0/6.5HP--DC motor

2.0HP--- AC motor

1.0/1.5HP Motor m

3.0HPMotor mode

4.0/5.06.0/6.5HP

2.0HP

nit

odel：SIC-

l：SIC-70

Motor

Motor mode

l：YSK11

-68CVL-F1

CW-F195-

model：SI

0-40-4-A

40-1

-1

-101CW-F1250-4

3.CHECKING COMPONENTS

Page 37

BLAC

YELL

BRO

YELL

RED-

BLUE

Casset

℃

-YELLO

W-BRO

N-ORAN

W-RED:

LUE: 63

WHITE: 1

1.5HP-D

MOTOR

2.0HP-AC

MOTOR M

3.0/4.0HP DC-MOT

5.0/6.0/6.5HP DC-

:146±1

N:33±15

E: 43±1

3±15%

15%Ω

19±15%

MODEL:YDK

OR MODEL

MOTOR MOD

%Ω

K95-28-4-B

EHDS50A

DEL:

SIC-7

AQH

72FW-D8124-2B

3.CHECKING COMPONENTS

Page 38

Test in resi

TOOL: Mul

Test the re

0(short cir

Test in volt

2.0HP DC MOTOR MOD

3.0HP DC MOTOR MOD

4.0HP DC MOTOR MOD

5.0/6.0/6.5HP

tance.

imeter.

istance of

uit)or∞（op

EL: SIC-52F

EL:

SIC-70C

EL: SIC-70C

DC MOTO R MODE

the main

n circuit）.

-F130-3

CW-F1100-6

CW-F1140-3

L: SIC-101CW

inding. The

W-F1181-2

indoor fan

otor is fault if the resiistance of main windin

Floor ceiling

3.CHECKING COMPONENTS

Page 39

TOOL: Multimeter.

Insert screwdriver into to rotate indoor fan motor slowly for 1 revolution or over, and measure

voltage “YELLOW” and “GND” on motor. The voltage repeat 0V DC and 5V DC.

Notes:

Please don’t hold motor by lead wires.

Please don’t plug IN/OUT the motor connecter while power ON.

Please don’t drop hurl or dump motor against hard material. Malfunction may not be observed at early

stage after such shock. But it may be found later, this type of mishandling void our warranty.

3.CHECKING COMPONENTS

Page 40

2. OUTDO

DC MOTO

2.0/3.0HP-

3. COMPR

R FAN M

1.0/1.5HP--

MOTOR M

MOTOR

OR MODEL

4.0HP—MOT

5.0HP—MOT

OR MODEL

6.0/6.5HP:

SSOR

2.0HP: ATM150D23UFZ

3.0HP:ATF235D43UMT

4.0/5.0HP: ATF310D43UMT

6.0/6.5HP:ATH356SDPC9FL

TOR

ODEL:

SIC-

ODEL: SI

L:SIC-71FW

L:SIC-81FW

MOTOR MOD

EL:SIC-71

52FV-F130-

-61FV-F16

W-D8121-1

W-F1138-1

FW-D8121-

-3

-1

-1+ SIC-71F

FW-D8121-2

COMPRESSOR EXAMINE AND REPAIR

1.0HP：ASD088SKNA8JT

1.5HP： ASN108D43UFZA

3.CHECKING COMPONENTS

Page 41

Test in resistance.

TOOL: Multimeter.

Test the resistance of the winding.

The compressor is fault if the resistance of winding 0(short

circuit)or∞（open circuit）

Familiar error:

1）Compressor motor lock.

2）Discharge pressure value approaches static pressure value .

3）Compressor motor winding abnormality.

Notes：

1）Don’t put a compressor on its side or turn over.

2) Please assembly the compressor in your air conditioner rapidly after removing the plugs. Don’t place

the comp. In air for along time.

3）Avoiding compressor running in reverse caused by connecting electrical wire incorrectly.

4）Warning! In case AC voltage is impressed to compressor, the compressor performance will below

because of its rotor magnetic force decreasing.

4. INDUCTANCE

Familiar error:

1）Sound abnormality

2）Insulation resistance disqualification.

5. STEP MOTOR

3.CHECKING COMPONENTS

Page 42

Test in resistance.

TOOL: Multimeter.

Test the resistance of winding. The stepper motor is fault if the resistance of winding 0(short circuit)or∞

（open circuit）.

6. FUSE

Checking continuity of fuse on PCB ASS’Y.

Remove the PCB ASS’Y from the electrical component box. Then pull out the fuse from the PCB ASS’Y

(Fig.1)

Fuse

PCB Ass'Y

Fig.1

Check for continuity by a multimeter as shown in Fig

.2.

Fuse

Fig.2

7.CAPACIT

emove the lead wires from the capacitor terminals, and then place a probe on the capacitor terminals

as shown in Fig.3.

Observe the deflection of the pointer, setting the resistance measuring range of the multimeter to the

maximum value.

* The capacitor is “good” if the pointer bounces to a great extent and then gradually returns to its

original position.

* The range of deflection and deflection time differ according to the capacity of the capacitor.

3.CHECKING COMPONENTS

Page 43

Compressor motor capacitor

Fan motor capacitor

Multimeter

Fig.3

3.CHECKING COMPONENTS

Page 44

44..DDIISSAASSSSEEMMBBLLYY AANNDD AASSSSEEMMBBLLYY FFOORR CCOOMMPPRREESSSSOORR AANNDD MMOOTTOOR

Outdoor unit

The special tools for compressor & motor disassembly and assembly：

Tool

Hexagon Screwdriver

Hexagon Socket

Outdoor unit

1.0/1.5/2.0/3.0HP Important: Before disassembly and assembly, make sure that the power to the system has been disconnected and verified as voltage free.

Step Illustration Handling Instruction

external 1.Remove

casing

1.Remove the top cover, handle and valve cover;

2.Remove the outer case and right side plate.

2.Remove motor

1.Remove the blade nut and then remove the blade;

2.Remove the motor from motor supporter

3.Remove compressor

1.Reclaim the refr

igerant

from the entire system.

2.Unsolder the 4-way valve piping a

ssy from

compressor;

3.Remove the compressor mounting bolts by using hexagon

socket;

4.Carefully remove the

compressor from chassis.

4.Assemble unit

Assemble the unit in the reverse order of disassembly.

Page 45

44..DDIISSAASSSSEEMMBBLLYY AANNDD AASSSSEEMMBBLLYY FFOORR CCOOMMPPRREESSSSOORR AANNDD MMOOTTOOR

4.0HP Important: Before disassembly and assembly, make sure that the power to the system has been disconnected and verified as voltage free.

Step Illustration Handlin Instructiong

1.Remove external casing

1.Remove the top cover, handle and valve cover;

2.Remove the outer case and right side plate.

2.Remove motor

1.Remove the blade nut and then remove the blade;

2.Remove the motor from motor supporter

3.Remove compressor

1.Reclaim the refrigerant from the entire system.

2.Unsolder the 4-way valve piping assy from compressor;

3.Remove the compressor mounting bolts by using hexagon socket;

4.Carefully remove the

compressor from chassis.

4.Assemble unit

Assemble the unit in the reverse order of disassembly.

Page 46

44..DDIISSAASSSSEEMMBBLLYY AANNDD AASSSSEEMMBBLLYY FFOORR CCOOMMPPRREESSSSOORR AANNDD MMOOTTOOR

6.0/6.5HP Important: Before disassembly and assembly, make sure that the power to the system has been disconnected and verified as voltage free.

Step Illustration Handling Instruction

external 1.Remove

casing

1.Remove the top cover, handle and valve cover;

2.Remove the outer case and right side plate.

2.Remove motor

1.Remove the blade nut and then remove the blade;

2.Remove the motor from motor supporter

3. Remove gas liquid separator

1.Reclaimthe refrigerant from the entire system.

2.Unsolder the 4-way valve piping assy from gas liquid separator;

3.Remove the gas liquid separator.

4.Remove compressor

1.Reclaim the refrigerant From the entire system.

Unsolder the 4-way valve piping assy from compressor.

Remove the compressor mounting bolts by using

hexagon socket.

4.Carefully remove the

compressor from chassis.

5.Assemble unit

Assemble the unit in the reverse order of disassembly.

Page 47

44..DDIISSAASSSSEEMMBBLLYY AANNDD AASSSSEEMMBBLLYY FFOORR CCOOMMPPRREESSSSOORR AANNDD MMOOTTOOR

Indoor unit Ducted（1.0/1.5HP）

Removal and Assembly of Fan Motor Important: Before removing the fan, make sure power to the system is disconnected. Step Illustration Handling Instruction

1. Unplug the motor cables

Use screwdriver to remove the electric box cover and un

plug the motor cables in electric box.

2. Remove the base board

Loose and take out the screws fixing

the base board, then remove the base board.

3. Remove the screws on fan sub-assembly.

Remove the screws on fan sub-assembly.

4. Removing the fan cage enclosure

Rotate the fan cage housing toward supply opening and remove.

5. Loosen the fan and motor.

Loosen the screws holding the fan cage to the motor shaft by using hexagon screwdriver. Remove outer housing holding motor in place.

6. Replace the motor

Remove the motor from the support bracket. Then remove the fan cages from the motor shafts. Remove the motor from the air inlet and replace with new motor. Be sure to tighten the cages onto the motor shafts.

7. Reassembly of the unit

Reassemble the unit in the reverse order

of disassembly and test operation.

Page 48

44..DDIISSAASSSSEEMMBBLLYY AANNDD AASSSSEEMMBBLLYY FFOORR CCOOMMPPRREESSSSOORR AANNDD MMOOTTOOR

2.0HP

Removal and Assembly of Fan Motor Important: Before removing the fan, make sure power to the system is disconnected. Step Illustration Handling Instruction

1. Unplug the motor cables

Use screwdriver to remove the electric box cover and unplug the motor cables in electric box.

2. Remove the base board

Loose and take out the screws fixing the base board, then remove the base board.

3. Remove the screws on fan sub-assembly.

Remove the screws on fan sub-assembly.

4. Removing the fan cage enclosure

Rotate the fan cage housing toward supply opening and remove.

5. Loosen the fan and motor

Loosen the screws holding the fan cage to the motor shaft by using hexagon screwdriver. Remove outer housing holding motor in place.

6. Replace the motor

Remove the motor from the support bracket. Then remove the fan cages and crosshead from the motor shafts. Remove the motor from the air inlet and replace with new motor. Be sure to tighten the cages onto the motor shafts.

7. Reassembly of the unit

Reassemble the unit in the reverse order of disassembly and test operation.

Page 49

44..DDIISSAASSSSEEMMBBLLYY AANNDD AASSSSEEMMBBLLYY FFOORR CCOOMMPPRREESSSSOORR AANNDD MMOOTTOOR

4.0/5.0/6.0/6.5HP

Removal and Assembly of Fan Motor Important: Before removing the fan, make sure power to the system is disconnected. Step Illustration Handling Instruction

1. Unplug the motor cables

Use screwdriver to remove the electric box

cover and unplug

the motor cables in electric box.

2. Loosen the fan and motor.

Use a offset spanner to loosen the screws holding the fan cage to the motor shaft. Remove outer housing holding motor in place.

3. Remove the diversion circle and support brac

ket.

Use screwdriver to remove the diversion circle and support bracket.

4. Replace the motor

Remove the fan cage from the motor shaft.

Remove the motor from the air inlet and replace with new motor. Be sure to tighten the cages onto the motor shafts.

5. Reassembly of the unit

Reassemble the unit in the reverse order of disassembly and test operation.

Page 50

44..DDIISSAASSSSEEMMBBLLYY AANNDD AASSSSEEMMBBLLYY FFOORR CCOOMMPPRREESSSSOORR AANNDD MMOOTTOOR

Cassette type

1.5/2.0HP

Step Illustration Handling Instruction

1. Loosen the screws holding the

electric bo

x cover and remove the plate.

Use screwdriver to loosen the electric box and the plate.

2. Loosen the bolts holding the fan blades in place and Remove the fan blade.

Use a wrench or socket to carefully remove the fan blade bolts.

3. Loosen the screws holding the motor in place and Remove the motor and replace it.

Use screwdriver to loosen the screws holding the motor.

Page 51

44..DDIISSAASSSSEEMMBBLLYY AANNDD AASSSSEEMMBBLLYY FFOORR CCOOMMPPRREESSSSOORR AANNDD MMOOTTOOR

3.0/4.0/5.0/6.0/6.5HP

Step Illustration Handling Instruction

1.Loosen the screws holding the e

lectric bo

cover and electric box.

Use screwdriver to loosen the Electric box.

2. Loosen the screws holding cond

ensat

e pan and Remove the condensate pan.

Use screwdriver to loosen the screws holding the drain pan in place.

3. Loosen the bolts holding the fan blade

s in place an

Remove the fan blade.

Use a wrench or socket to carefully remove the fan blade bolts.

4. Loosen the screws holding the motor in place and Remove the motor and replace it.

Use screwdriver to loosen the screws holding the motor.

Page 52

44..DDIISSAASSSSEEMMBBLLYY AANNDD AASSSSEEMMBBLLYY FFOORR CCOOMMPPRREESSSSOORR AANNDD MMOOTTOOR

Floor ceiling

Removal of the motor

Step Illustration Handling Instruction

Disassembly of

the down front

panel assembly

Slide open the 4 decorative covers, loose and take out the 4 screws, then open the down front panel assembly.

Loose and take out the 4 screws fixing the hinge, then remove the down front panel assembly.

Disassembly of

the mounting

Plate

Loose and take out the 2 screws fixing the mounting Plate, then remove it.

Disassembly of

the electric box

Loose and take out the 3 screws fixing the electric box, then take it.

Page 53

44..DDIISSAASSSSEEMMBBLLYY AANNDD AASSSSEEMMBBLLYY FFOORR CCOOMMPPRREESSSSOORR AANNDD MMOOTTOOR

Removal of the motor

Step Illustration Handling Instruction

Disassembly of

the motor shaft

Remov e the 2 screws fixing the motor shaft and fan blade by allen screwdriver.

Disassembly of

the motor

(2.0/3.0HP)

Remove the fasteners between the up shell and the below shell; Take out of the motor and centrifugal fan blade; Remove the 2 screws fixing the centrifugal fan blade and get the motor.

Disassembly of

(4.0HP)

Remove the fasteners between the up shell and the below shell on both sides of the motor; Remove the 2 screws fixing the Crosshead and take it away from the motor; Take out of the motor and centrifugal fan blade; Remove the 2 screws fixing the centrifugal fan blade and get the

Page 54

44..DDIISSAASSSSEEMMBBLLYY AANNDD AASSSSEEMMBBLLYY FFOORR CCOOMMPPRREESSSSOORR AANNDD MMOOTTOOR

Removal of the motor

Step Illustration Handling Instruction

motor.

Disassembly of

the motor

(5.0/6.0/6.5HP)

Remove the fasteners between the up shell and the below shell on both sides of the motor; Remove the 2 screws fixing the Crosshead and take it away from the motor; Take out of the motor.

Page 55

. CONTROL LOGIC DESCRIPTIO

5 ( ( d ( 5

h T T

Contr55.

11)

22) Tempe isplayed.

33) Indoor f

Inn Inn

igh, (medi

he auto fa 1 is indoo

CCompress OO WW shh

OOutdoor fa OO SS ww DD byy the rule

ool logic

.1 Fan Onlly Mode

Outdoorr

rrature sett

aan can be

Mode .2 Cooling door fan rrunning rul cooling mmode, indo

uum), low a

rr room te

oor and outd

nce the coompresso

hen indooo

ut off. Whh

nn running r

nce the ouutdoor fan

ingle outdoo

ill regulatee ouble outddoor fan: If

s, and th

fan and coompresso

ing functi

es: or fan run

nnd auto.

oor fan ru

rr starts up,

r room temmp.T1 is l

en T1 is hhigher tha

ules:

start up, it

or fan: Firrst, it will r

the speedd by the o

ddescriptioon

rr stop.

set to highh/medium/l

mmperature. TT

it will follo

nn Ts+1, the

will follow

uun in an in

it has twoo

ee downer ffan speed

oon is disaabled, and

ss all the timm

s is settingg

nnning ruless:

ww the belo

oower than TTs, the com

compress

the below

vvariable s

temperatuu

outdoor faans, the u

no settin

ow, but cann

e and thee

temperatture.

ww rules:

rules:

ppeed for a

uutdoor-coil re.

lower thaan the up

not be seet to auto.

speed caan be sele

pressor annd outdoo or and outtdoor fan

ppper fan reggulates th

pper fan sp

g temperaature is

cted as

rr fan will wwill start

sshort time;; Then it

ee speed

eed for

T1-Ts

High

Medium

Low

Page 56

. CONTROL LOGIC DESCRIPTIO

5 I I

t s T T

300

nn several

wwill not run

eeveral min

he auto fa 1 is indoo

OOutdoor fa OO SS ww DD byy the rule 300

rpm~60rppm.

.3 Heatingg Mode

nndoor fan rrunning rul

eemperaturee. Th a t i s

utes, the s n:

nn running r

nce the ouutdoor fan ingle outdoo ill regulatee ouble outddoor fan: If

s, and th

rpm~60rppm.

es:

mminutes aftter the he

until the hheat exch

because

rr room temm

ules:

start up, it

or fan: Firrst, it will r

the speedd by the in

cold air

peed can bb

pprevention

e selecte

perature. TTs is settin

will follow

uun in an in

it has twoo

ee downer ffan speed

0

aating modee is starte

aanger of thhe indoor

d as high,

gg tempera

the below

vvariable s

outdoor faans, the u

(medium),

tture.

rules:

ppeed for a

eemperatureeddoor-coil t .

lower thaan the up

dd, the fan oof the ind uunit reachees a high

system iss

ppper fan reggulates th

pper fan sp

ooor unit

enough operatingg. After low and auto.

sshort time;; Then it

ee speed

eed for

Low

Mediuum

Hiigh

TTs-T1

Page 57

. CONTROL LOGIC DESCRIPTIO

his mode caa Inn acc

Inndoor fan ass in relev seetting tem aggain.

DD AAC will ent CCondition:

CC seeconds, th

E6, the co

.4 Auto MMode

can be c

n be channged betw

auto moode, the

cording too

-3℃

wwill run at aant mode.

.5 Evapoorator Lo

InverterrC-

ooling moode: When

mpressor

hhosen wit

eeen 16~3

mmachine

ΔT (ΔT ==T1-Ts).

ΔTT=T1-Ts

T > 3℃

ΔTT ＜ -3℃

auto fan

pperature iss modified,

eer T2 protecc

e compresssor and

TE6

TE5

hh remote

00℃.

wwill choos

≤ ΔT ≤ 3℃℃

If the commpressor

the mach

ww-temperr

tion if anyy of the fol

the indooo

aand outdooo

Off

ee cooling,

Ruu

Cooling

Fan-only

Heating

oof the relevvant mode

ature Prootection

r coil temmp. T2 kee

ooutdoor fann will shut

r fan will rrestart up.

ccontroller aa

nning moode

. The louv ping for 1 keep stop

ine will chooose mod

lowing conn

off. When

nd the see

heating oo

eer operate

ee accordin

dition is saatisfied.

ps lower tthan TE5

tting tempperature

r fan-onlyy mode

s same

0 minutess or the

g to ΔT

for 120

T2 is highher than

Page 58

. CONTROL LOGIC DESCRIPTIO

5.6 Condenser High-temperature Protection

DC-Inverter outdoor unit AC will enter T3 protection if any of the following conditions is satisfied.

Condition1: Cooling mode: When the outdoor coil temp. T3 keeps higher than T2 for 10 seconds, the compressor and outdoor fan will shut off. When T3 is lower than T1, the compressor and outdoor fan will restart up. Condition2: Heating mode: When the indoor coil temp. T3 keeps higher than T2 for 10 seconds, the compressor and outdoor fan will shut off. When T3 is lower than T1, the compressor and outdoor fan will restart up.

TE10

Off

TE11

Page 59