Haier AS18ND1HRA-WHITE, HSU18VHGL-G, 1U18FE2ERA, HSU18VHGL-W, AS24BS4HRA Service Manual

SERVICE MANAUL

Wall Mounted Type

DC Inverter FREE MATCH N-Series

AS18ND1HRA-WHITE HSU18VHGL-G

Model No.

This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product. Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or Repair the product or products dealt with in this service information by anyone else could result in serious injury or death

WARNING

2014 (Qingdao Haier Air Conditioner General corp. , Ltd)

Haier Group

Version：V1 Date：2014-05-25

Table of contents

Domestic air conditioner

Contents

1. Introduction ............................................................................................ 1

2. Features ................................................................................................ 7

3. Specifications ........................................................................................ 8

4. Sensors list............................................................................................ 9

5. Piping diagrams .....................................................................................10

6. Printed Circuit Board Connector Wiring Diagram..................................11

7. Functions and Control ...........................................................................

8. System configuration.............................................................................

9. Dimensional drawings ...........................................................................

10. Conter of gravity..................................................................................

11. Service Diagnosis ................................................................................

12. Circuit diagrams

..................................................................................

14

59

43

42

25

Introduction

Domestic air conditioner

1 Introduction

1.1 Model name explanation

A S 1 8 N D 1 H R A

Indoor unit

Type of indoor unit: S (wall-mounted)

Nominal cooling capacity (18000BTU/h)

Version number

Heat pump & R410A refrigerant

DC inverter

Apply toT1; 208~230V60HZ/1ph

1

Platform of indoor units: N (N platform)

50N Platform



Intuoduction





Domestic air conditioner



1.2 Safety Cautions

Be sure to read the following safety cautions before conducting repair work.

The caution items are classified into “Warning” and “Caution”. The “Warning” items are especially important

since they can lead to death or serious injury if they are not followed closely. The “Caution” items can also lead

to serious accidents under some conditions if they are not followed. Therefore, be sure to observe all the safety

caution items described below.

About the pictograms △ This symbol indicates an item for which caution must be exercised.

The pictogram shows the item to which attention must be paid.

○ This symbol indicates a prohibited action.

The prohibited item or action is shown inside or near the symbol.

● This symbol indicates an action that must be taken, or an instruction.

The instruction is shown inside or near the symbol.

After the repair work is complete, be sure to conduct a test operation to ensure that the equipment operates

Normally, and explain the cautions for operating the product to the customer.

1.2.1 Caution in Repair

Warning

Be sure to disconnect the power cable plug from the plug socket before disassembling the equipment for

a repair.

Working on the equipment that is connected to a power supply can cause an electrical shook.

If it is necessary to supply power to the equipment to conduct the repair or inspecting the circuits, do not

touch any electrically charged sections of the equipment.

If the refrigerant gas discharges during the repair work, do not touch the discharging refrigerant gas .The

refrigerant gas can cause frostbite.

When disconnecting the suction or discharge pipe of the compressor at the welded section, release the

refrigerant gas completely at a well-ventilated place first.

If there is a gas remaining inside the compressor , the refrigerant gas or refrigerating machine oil

discharges when the pipe is disconnected, and it can cause injury.

If the refrigerant gas leaks during the repair work, ventilate the area. The refrigerant gas can generate

toxic gases when it contacts flames.

The step-up capacitor supplies high-voltage electricity to the electrical components of the outdoor unit.

Be sure to discharge the capacitor completely before conducting repair work . A charged capacitor can

cause an electrical shock.

Do not start or stop the air conditioner operation by plugging or unplugging the power cable plug.

Plugging or unplugging the power cable plug to operate the equipment can cause an electrical shock or

fire.

2

Intuoduction

Domestic air conditioner

Warning

Do not repair the electrical components with wet hands . Working on the equipment with wet hands can cause an electrical shock

Do not clean the air conditioner by splashing water. Washing the unit with water can cause an electrical shock.

Be sure to provide the grounding when repairing the equipment in a humid or wet place, to avoid electrical shock.

Be sure to turn off the power switch and unplug the power cable when cleaning the equipment. The internal fan rotates at a high speed, and cause injury.

Do not tilt the unit when removing it. The water inside the unit can spill and wet the furniture and floor.

Be sure to check that the refrigerating cycle section has cooled down sufficiently before conducting repair work. Working on the unit when the refrigerating cycle section is hot can cause burns.

Use the welder in a well-ventilated place. Using the welder in an enclosed room can cause oxygen deficiency.

1.2.2 Cautions Regarding Products after Repair

Warning

Be sure to use parts listed in the service parts list of the applicable model and appropriate tools to conduct repair work. Never attempt to modify the equipment. The use of inappropriate parts or tools can cause an electrical shock, excessive heat generation or fire.

When relocating the equipment, make sure that the new installation site has sufficient strength to withstand the weight of the equipment. If the installation site does not have sufficient strength and if the installation work is not conducted securely, the equipment can fall and cause injury. Be sure to install the product correctly by using the provided standard installation frame. Incorrect use of the installation frame and improper installation can cause the equipment to fall, resulting in injury.

For integral units only

Be sure to install the product securely in the installation frame mounted on a window frame. If the unit is not securely mounted, it can fall and cause injury.

For integral units only

3



Intuoduction





Domestic air conditioner



Warning

Be sure to use an exclusive power circuit for the equipment, and follow the technical standards related to

the electrical equipment, the internal wiring regulations and the instruction manual for installation when

conducting electrical work.

Insufficient power circuit capacity and improper electrical work can cause an electrical shock or fire.

Be sure to use the specified cable to connect between the indoor and outdoor units. Make the

connections securely and route the cable properly so that there is no force pulling the cable at the

connection terminals.

Improper connections can cause excessive heat generation or fire.

When connecting the cable between the indoor and outdoor units, make sure that the terminal cover

does

not lift off or dismount because of the cable.

If the cover is not mounted properly, the terminal connection section can cause an electrical shock,

excessive heat generation or fire.

Do not damage or modify the power cable.

Damaged or modified power cable can cause an electrical shock or fire. Placing heavy items on the

power cable, and heating or pulling the power cable can damage the cable.

Do not mix air or gas other than the specified refrigerant (R-410A / R22) in the refrigerant system.

If air enters the refrigerating system, an excessively high pressure results, causing equipment damage

and injury.

If the refrigerant gas leaks, be sure to locate the leak and repair it before charging the refrigerant. After

charging refrigerant, make sure that there is no refrigerant leak.

If the leak cannot be located and the repair work must be stopped, be sure to perform pump-down and

close the service valve, to prevent the refrigerant gas from leaking into the room. The refrigerant gas

itself

is harmless, but it can generate toxic gases when it contacts flames, such as fan and other heaters,

stoves and ranges.

.

When replacing the coin battery in the remote controller, be sure to disposed of the old battery to prevent

children from swallowing it.

If a child swallows the coin battery, see a doctor immediately.

4



Intuoduction





Domestic air conditioner



Caution

Installation of a leakage breaker is necessary in some cases depending on the conditions of the

installation site, to prevent electrical shocks.

Do not install the equipment in a place where there is a possibility of combustible gas leaks.

If a combustible gas leaks and remains around the unit, it can cause a fire.

Be sure to install the packing and seal on the installation frame properly. If the packing and seal are not

installed properly, water can enter the room and wet the furniture and floor.

1.2.3 Inspection after Repair

Warning

Check to make sure that the power cable plug is not dirty or loose, then insert the plug into a power outlet

all the way.

If the plug has dust or loose connection, it can cause an electrical shock or fire.

If the power cable and lead wires have scratches or deteriorated, be sure to replace them.

Damaged cable and wires can cause an electrical shock, excessive heat generation or fire.

Warning

Do not use a joined power cable or extension cable, or share the same power outlet with other electrical

appliances since it can cause an electrical shock, excessive heat generation or fire.

5



Intuoduction





Domestic air conditioner



Caution

Check to see if the parts and wires are mounted and connected properly, and if the connections at the

soldered or crimped terminals are secure. Improper installation and connections can cause excessive

heat generation, fire or an electrical shock.

If the installation platform or frame has corroded, replace it. Corroded installation platform or frame can

cause the unit to fall, resulting in injury.

Check the grounding, and repair it if the equipment is not properly grounded. Improper grounding can

cause an electrical shock.

Be sure to measure the insulation resistance after the repair, and make sure that the resistance is 1 M

ohm or higher.

Faulty insulation can cause an electrical shock.

Be sure to check the drainage of the indoor unit after the repair.

Faulty drainage can cause the water to enter the room and wet the furniture and floor.

1.2.4 Using Icons

Icons are used to attract the attention of the reader to specific information. The meaning of each icon is described in

the table below:

1.2.5 Using Icons List

Icon Type of Information Description

Note

A “note” provides information that is not indispensable, but may

nevertheless be valuable to the reader, such as tips and tricks.

Caution

A “caution” is used when there is danger that the reader, through

incorrect manipulation, may damage equipment, loose data, get

an

unexpected result or has to restart (part of) a procedure.

Warning

A “warning” is used when there is danger of personal injury.

Reference

A “reference” guides the reader to other places in this binder or in

this manual, where he/she will find additional information on a

specific topic.

6

Specifications

Domestic air conditioner

2.Features

7

Super quiet: Lower noise operation condition

A-PAM DC inverter:With adoption of S-TYPE,S-PAM and PHASE control technology to works more

stably at low-frequency,and is more energy-saving,mor powerful at high frequency.

Long distance air supplying:

5 F° Heating: When 5 °F can still heating natural

50 °F heating maintenance:Heating Holding 50°F temperature

Confortable sleep：The setting temperature and the indoor noise can be adjusted to a more comfortable

level when you set the “sleep mode” during night sleep.

Super match:One outdoor unit can match two or more indoor unit.

DIY auto mode: Adjust the last fixed operation mode automatically.

Turbo mode: Quick cooling or heating

Auto restart: Automatic return to previous operation conditions after sudden power blackout

24 hours timer: Use the timer function to set on,or off,or from on to off,or from off to on.

Intergr

ative valve cover:The valve cover is Intergrative.

2-way piping design: The pipe can shoot out both from left or right side.

Easy clean design: The panel is easy to wash and the airflow vents can be detached easily

Double 8 display:The display is Double 8 mode.

Specifications

Domestic air conditioner

3 Specifications

NOMINAL DISTRIBUTION SYSTEM VOLTAGE

1/esahP

05zHycneuqerF

032VegatloV

NOMINAL CAPACITY and NOMINAL INPUT

cooling heating

Capacity rated

Btu/h

17000(4780-13300) 18000(5120-13990)

Power Consumption(Ra 50685222Btu)det

38/BtuBtuPOC/REE

hWKnoitpmusnocygrenelaunnA 999950 6252250

h/³inlavomeRerutsioM 70.62*10 ³

TECHNICAL SPECIFICATIONS

1.06×0.77×3.21inD*W*HsnoisnemiD

1.32×1.08×3.56inD*W*HsnoisnemiDdegakcaP

28.6lb/thgieW

35.2lb/thgiewssorG

etihW//roloC

Sound level

Sound peessure(high/medium/low)

dB

Sound power(high) dB

8

-

57/54/51

38

/

Specifications

Domestic air conditioner

TECHNICAL SPECIFICATIONS-PARTS

cooling heating

Fan

nafwolfssorCepyT

136.5WtuptuorotoM

Air flow rate(high) in³/h 31779 31779

Speed(high/middle/low) rpm 950/850/750 900/ 800/700

Heat exchanger

Type

ML fin-φ7HI-HX tube

4.1*81*3hctif*egats*tnemgeS

hgiRlortnocnoitceridriA t,Left,Horizontal,Downward

Air filter

Removable/Washable/Mildew Proof

Temperature control

Microcomputer Control

HD01-RYledomrellortnocetomeR

Note: the data are based on the conditions shown in the table below

htgnelgnipiPgnitaehgnilooc

16.4in

4．Sensors list

type Description Qty

1erutarepmetmoorgnitcetedrofdesustIrosnesmooR

Pipe sensor Its used for detecting temperature of evaporator 1

Conversation formulae Kcal/h= KW×860 Btu/h= KW×3414 cfm=m³/min×35.3

9

136.5

Indoor:

80.6°

F

DB/66.2°

F

W B

Outdoor: 95°

F

DB/75.2°FW B

Indoor:68°

F

D B

Ou t doo r: 44.6°

F

D B / 42.8°

F

W B



Piping diagrams





Domestic air conditioner



5．Pinping diagrams





10

Connector Wiring diagrams

Domestic air conditioner

6. Printed Circuit Board Connector Wiring Diagram

11

Connectors

PCB(1) (Control PCB)

daolhtiwtcennoC

rotcennocBCPseires

1 CN9

Connector for fan motor

2 CN6

Connector for heat exchanger thermistor and Room temperature thermistor

3

CN5

Connector for UP&DOWN STEP motor

4 CN21

Connector for power N wire

5 CN52

Connector for power L

6 CN27

7 CN7

8 CN23 Connector for communicate between the indoor board and the outdoor board

9 CN34

Connector for power GRN

Connector for display board

Note: Other designations

PCB(1) (Indoor Control PCB)

1) CN14 Connector for Forced operation ON / OFF switch

2) SW2 1 Select remote code A or B,2 Select room card able or disable , 3-4 Select 23,26,33,or 35

3) RV1 Varistor

4) FUSE1 Fuse 3.15A/250VAC

Connector for long-range control

Connector Wiring diagrams

Domestic air conditioner

12

PCB(1)

C23

CN21

CN7

CN14

CN6

CN52

CN34

CN9

CN5

CN27

Connector Wiring diagrams

Domestic air conditioner

Wiring diagrams

13

up-down stepmoter

ION GENERATIOR

Y/G

C0N2

C0N3

DC FAN MOTOR

M

FUSE1

SW1

EMERGENCY SWITCH

RECEIVER DISPLAY

CN7

T3.15A/250V AC

80

120

1

(N)

(C)

3

(L)

2

W

B

Y/G

GND

CN14

AMBIENT TEMP SENSOR

PIPING TEMP SENSOR

CN6

CN10

Right stepmoter

left stepmoter

CN11

CN5

CN5-1 CN5-2

R

C0N1

BL

Fresh air

(L)

CN21

N

S

CN51

Room card

R

W

@

CN9

CN52

CN23

Functions and Control

Domestic air conditioner

7.Funcitions and Control

7.1 Main functions and control specification

7.1.1 Automatic operation

When the running mode is turned to automation after starting the system, the system will first determine the running mode according to the current room temperature and then will run according to the determined mode. Tr in the following selection conditions means room temperature, Ts means setting temperature, Tp means temperature of indoor coil pipe Tr 73.4°F Choose Cooling Mode Tr

Choose Heating Mode

After turning to the automation mode, the running mode can be switched between cooling mode, fan mode and heating mode according to the change of the indoor ambient temperature. But the automatic conversion between cooling mode and heating mode must be conducted after 15 minutes.

7.1.2 Cooling operation mode

Temperature control range: 60.8°F---86°F Temperature difference: 33.8°F/30.2°F * Control features: When Tr

input airflow >Ts set temperature °F, the compressor will be opened, the indoor

fan will operate at the set speed and the mode signal will be sent to the outdoor system. When Tr

input

airflow

Ts set temperature °F, the compressor will be opened, the indoor fan will operate at the set speed and the mode signal will be sent to the outdoor system. The system will keep the original status if Tr= Ts. Airflow speed control: (temperature difference 33.8°F） Automatic: When Tr

Ts+37.4°F, high speed.

When Ts+33.8°F

Tr<Ts+37.4°F, medium speed When Tr<Ts+33.8°F , low speed When the sensor is off, low speed When the airflow speed has no delay from the high to low switching, the speed should be delayed for 3 minutes (remain at high speed for 3 minutes.) before the next switch. Manus: When the system is operating, you can set the high, medium or low speed manually. (When the sensor is on or off, the system will change the speed 2 seconds after receiving the signal.) *Airgate location control: the location for the airgate can be set according to your needs. *Defrosting function: preventing the frosting on the indoor heat exchanger (when cooling or dehumidifying). When the compressor works continuously for 1/6 minutes (adaptable in EEPROM) and the temperature of the indoor coils has been below zero centigrade

for 10 seconds, the compressor will be stopped and the malfunction will be recorded in the malfunction list. The indoor system will continue to run. When the temperature of the indoor coil is raised to 46°F, the compressor will be restarted again (the requirement of 3 minutes’ delay should be satisfied.) * timing system on/off function. * Dormant control function.

14

73.4°F

Functions and Control

Domestic air conditioner

7.1.3 Dehumidifying mode.

* temperature control range:

60.8---86 F

* temperature difference:

30.2/33.8°F

Control feature: send the dehumidifying signal to the outdoor system. When Tr>Ts+35.6°F , the compressor will be turned on, the indoor fan will operate at the set speed. When Tr is between the Ts and Ts+35.6°F , the outdoor system will operate at the high dehumidifying frequency for 10 minutes and then at the low dehumidifying mode for six minutes. The indoor fan will operate at low speed. When Tr< Ts, the outsystem will be stopped, the indoor fan will be stopped for 3 minutes and then turned to the low speed option. All the frequency converses have a 30.2/33.8°F difference. * Wind speed control: Automatic: When Tr

Ts+41°F , high speed. When Ts+37.4°F Tr< Ts+41°F , medium speed. When Ts+35.6°F Tr< Ts+37.4°F, low speed. When Tr<Ts+35.6°F, light speed. If the outdoor fan stopped, the indoor fan will be paused for 3 minutes. If the outdoor fan stopped for more than 3 minutes and the outdoor system still operates, the system will be changed into light speed mode. When the airflow speed has no delay from the high to low switching, the speed should be delayed for 3 minutes (remain at high speed for 3 minutes.) before the next switch. Manual: When the sensor is off or Tr< Ts+37.4°F, the manual operation can not be made. (obligatory automatic operation.) *Airgate location control: the location for the airgate can be set according to your needs. *Defrosting function: preventing the frosting on the indoor heat exchanger (when cooling or dehumidifying). When the compressor works continuously for 1/6 minutes (adaptable in EEPROM) and the temperature of the indoor coils has been below zero centigrade for 10 seconds, the compressor will be stopped and the malfunction will be recorded in the malfunction list. The indoor system will continue to run. When the temperature of the indoor coil is raised to 44.6°F, the compressor will be restarted again (the requirement of 3 minutes’ delay should be satisfied.) * Coil protection (synchronic overheating protection) are installed for the four directions latch malfunctions when dehumidifying. * Timing system on/off function. * Dormant control functio

n.

7.1.4 Heating operation mode.

*

temperature control range: 60.8---86 F * temperature difference: 30.2/33.8°F * control feature: the temperature compensation is automatically added and the system will send the heating signals to the outdoor system. If Tr

Ts, the outdoor compressor is turned on, the indoor fan will be at the cold air proof mode. If Tr>Ts+35.6°F, the outdoor system is turned off, the indoor fan will be at the heat residue sending mode. If Tr<Ts+35.6°F, the outdoor system will be turned on again, the indoor fan will be at the cold air proof mode.

15

<

Functions and Control

Domestic air conditioner

*Indoor fan control manual control: You can choose high, medium, low and automatic speed control. Automatic: When Tr<Ts, high speed. When Ts

Tr Ts+35.6°F, medium speed. When Tr> Ts+35.6°F, low speed. When the airflow speed has no delay from the high to low switching, the speed should be delayed for 3 minutes (remain at high speed for 3 minutes.) before the next switch. *Airgate location control: the location for the airgate can be set according to your needs. Coldair proof operation

1. The indoor operation within 4 minutes after the start up is as the following diagram, the air speed can be raised only after the speed has reached a certain level.

2. 4 minutes after the start up of the indoor fan, the light airflow and the low airflow will be turned to the set speed airflow.

3. In the cold air proof operation, the fan won’t stop after the start up.

4. During the cold air proof operation, the indoor system will continuously send ‘indoor high speed’ signals to the outdoor system. * Resi

due heat sending. The indoor fan will send the residue heat at a low speed for 12 seconds. If other conditions are satisfied, when the compressor stops, the indoor system will operate at a light speed. The indoor fan will stop when the coil temperature is below the ‘heat start temp 4’. * Defrosting. When the system receives the defrosting signal from outdoors, the indoor fan will stop and the indoor temperature display won’t change. At the time, any indoor coil malfunctions will be neglected. When the outdoor defrosting finishes, the coil malfunction will still be neglected until the compressor has been started up for 30 seconds. The indoor temperature display will not change and the system operates at the cold air proof mode. * Automatic heating temperature compensation: when the system enters the heating mode, the temperature compensation (4) will be added. When the status is switched off, the compensation will be erased.

7.1.5 Strength operation

The system enters the mode after receiving the ‘strength signal’. Send strength operation signal to the outdoor system. The mode change finishes the strength operation. Entering ‘mute’, you can have normal operation or signal control such as timing to finish the strength operation. When the system is at the automatic option with the strength/ mute function, if the system enters the cooling

Heat start temp 1

Heat start temp

2

Heat start temp

3

Heat start temp

4

Set speed

Low speed

Light speed

Fan/off

Keep the hig

h

speed. The fa

n

doesn’t stop

16



Functions and Control





Domestic air conditioner



mode, the cooling strength/ mute function will be offered; if the system enters the heating mode, then the

heating strength/ mute function will be offered; if the system enters the airflow mode, there will be no

strength/ mute function.

7.1.6 Mute operation

The system enters the mode after receiving the ‘mute signal’.

a. Mute heating: the airflow speed is slight, the system sends the mute signal to the outdoor system.

b. mute cooling: the airflow speed is slight, the system sends the mute signal to the outdoor system.

When the compressor operates, the airflow speed is mute speed. EEPROM is adaptable.

Mute operation can not work under the dehumidifying and airflow-sending operation.

7.1.7 Air refreshing

After receiving the signal from the remote control, (HV series: the background light of the ‘health’ logo is

green. HS series: the ‘health’ indicator will be lighted). If the fan operates, the Nano-Aqua operates to realize

the ions sending function.

If the indoor fan stops, the Nano-Aqua is turned off.

When the Nano-Aqua is turned off, if the air refreshing system is turned on, the Nano-Aqua will be turned on

when the fan operates.

7.1.8 Timing

You can set 24 hours’ on/off timing accordingly. After the setting, the timing indicator will be lightened. Also,

the light will be turning off after the timing is finished. The followings are several timing methods.

1.system /on timing: The timing indicator will be lightened and the indoor system is under the waiting mode.

The light will be turned off when the timing is finished and the rest of the system will operate under a normal

condition. The timing starts since the last reception of the timing signal.

2.system /off timing: When the system is turned on, the timing indicator is lightened, the rest of the system

will operated under a normal condition. When set time comes, the indicator light will be turned off and the

system will be turned off. If you have set the dormant functions, the order of your settings will be operated

according to the timing settings.

3 .system /on and off timing: The settings will be completed according to the orders..

7.1.9 Dormant operation

The dormant timing is an eight hours unadaptable one. The timing signs are shown on the V series board.

(RC series show the dormant signal, the timing light is lighted on the 6 lights board).

2.1 Under the cooling/ dehumidifying operation, after the setting of the dormant operation, the set

temperature will be raised for 1 centigrade after 1 hour’s operation and will be raised for 1 centigrade 1 hour

later. The system will keep this status for 6 hours and then close.

2.2 Under the heating mode, after the setting of the dormant operation, the setting temperature will fall 2

centigrade after 1 hour’s operation and will fall 2 centigrade 1 hour later. 3 hours after the preceding

operations, the set temperature will be raised for 1 centigrade and the system will keep this status for 3 hours

and then close down.

2.3 During the dormant time, except the change of the system mode or a new press on the dormant setting

17

Functions and Control

Domestic air conditioner

keys, the timing of the 8 hours dormancy will take the first timing as the start time, any presses on other keys will not affect the original timing.

2.4 Indoor fan control under the dormant operation. If the indoor fan is at the high speed before the dormant operation setting, the speed will be turned to medium after the setting. If the fan is at the medium speed before the dormant setting, the speed will be turned to low after the setting. If the fan is at the low speed before the dormant setting, the speed will not change.

7.1.10 Urgent on/off input

Press the urgency button the buzzer will ring. The system will enter the automatic mode if you don’t press the button for more than 5 seconds. Under the system off mode, if you press the urgency key for 5 to 10 seconds, the system will start the test operation. Under the system off mode, if you press the urgency key for 10 to 15 seconds, the

display screen will show the resume of the last malfunction. If the system is under operation, the press on the urgency key will stop it. Under the system off mode, the display screen will show automatic running sign. Under the system off mode, the system will not receive the remote control signal if the press on the urgency key doesn’t last for 15 seconds or if the key is loosened. Urgency operation: If you press the urgency key for less than 5 seconds, the buzzer will ring when you press the on/off key. The system will enter the urgency operation when the urgency key is loosened. The urgency operation is fully automatic. Test operation. The inlet temperature sensor doesn’t work, the indoor fan and the indoor air direction board motor works synchronically. High speed airflow, cooling, outdoor system on, etc, will send the ambient temperature 30 centigrade and coil temp

erature 16 centigrade information to the outdoor system. Test operation The defrost protection of the evaporator doesn’t work. The temperature control doesn’t work. The test operation will be finished in 30 minutes. The test operation can be stopped by the relative commands from the remote control.

7.1.11 Low load protection control

In order to prevent the frosting of the indoor heat interaction device, the outdoor system will be stopped if the indoor heat interaction temperature is below zero centigrade for 5 minutes, but the fan will continue to operate. The outdoor system will be started again when the heat interaction temperature is above 7 centigrade and the system has been stopped for 3 minutes. The malfunction will be stored in the malfunction resume and will not be revealed.

7.1.12 High load protection control

The outdoor system will be stopped if the coil temperature is above 149°F for 2 minutes. The indoor fan will be controlled by the thermostat. The outdoor system can be restarted when the coil temperature is below 107.6°F and the system has been stopped for 3 minutes. The malfunction will be stored in the malfunction resume

18

Functions and Control

Domestic air conditioner

and will not be revealed.

7.1.13 Abnormal operation of indoor system

When the outdoor system operates, if the indoor system operation differs from the outdoor system, the abnormal operation malfunction will be reported. 10s after the report, the indoor system will be closed. Outdoor system mode Indoor system mode conflicts cooling heating yes cooling cooling no cooling airflow no heating heating no heating airflow yes heating cooling yes

7.1.14 Malfunction list resume.

Nothing is presented if there is no code list. The malfunction display will automatically finish in 10 seconds. The remote control only receives the signals for stop. According to the signals, the malfunction resume presentation finishes. The resume restores after the power supply restores.

7.1.15 Abnormality confirmation approaches

1. indoor temperature sensor abnormality:

Under the operation, the normal temperature ranges from 248°F to -22°F. When the temperature goes beyond this range, the

abnormality can be confirmed. If the temperature goes back into the range, the

system will automatically resume.

2 .indoor heat interaction sensor abnormality:

Under the operation, the normal temperature ranges from 248°F to -22°F. When the temperature goes beyond this range, the abnormality can be confirmed. If the temperature goes back into the range, the system will automatically resume.

3 .indoor malfunction:

Out door malfunction: When the indoor system receives the outdoor malfunction codes, it will store the code into E2 for the malfunction list resume. The indoor system will continue to operate according to the original status, the malfunction code will not be revealed or processed.

4. transmission abnormality:

If the indoor system can’t receive the outdoor system for 8 minutes, the communication abnormality can be confirmed and reported and the outdoor system will be stopped.

7.1.16 Single indoor system operation

* Enter condition: First, set the high speed airflow and 86°F set temperature, then press the dormant keys for 6

times within 7 seconds, the system will feedback with 6 rings.

* After the system enters the separate indoor system operation mode, the indoor system will operate

19

Functions and Control

Domestic air conditioner

according to the set mode and neglect the communication signals of the outdoor system. However, it has to send signals to the outdoor system. * Quitting condition: This mode can be quitted after receiving the quitting signal from the remote control or urgency system. The indoor system thus can quit the single operation mode.

7.1.17 Power cut compensation

* Entering condition: Press dormant button 10 times within 7 second, the buzzer will ring 4 times and the present system status will be stored into the EEPROM of the indoor system. * After entering the power cut compensation mode, the processing of the indoor system should be as the followings: Remote control urgency signal: operate according to the remote control and the urgent conditions, the present status will be stored into the EEPROM of the indoor system. * Quitting conditions: Press dormant button 10 times within 7 seconds and the buzzer will ring twice.

7.1.18 Fixed frequency operation

1. Fixed cooling: a. under G code condition: high speed cooling, set 60.8°F , press temperature ‘-‘ key and the set key at the same time. The system will enter the fixed frequency operation after the buzzer rings twice. b. The proceeding programs are as the follows: Entering the fixed frequency operation, you can set the fixed strength location 1 and send the cooling signal to the outdoor system. Meanwhile, you can fix the indoor system at high speed mode, the location of the airflow direction board can be switched to the maximal position. c. Quitting condition: The fixed frequency cooling can be quitted after receiving the remote signal, and the system will enter the remote setting status.

2. Fixed heating: a. under G code condition: high speed heating, set 86°F, press temperature ‘+‘ key and the set key at the same time. The system will enter the fixed frequency operation after the buzzer rings twice. b. The proceeding p

rograms are as the follows: Entering the fixed frequency operation, you can set the fixed strength location 1 and send the heating signal to the outdoor system. Meanwhile, you can fix the indoor system at high speed mode, the location of the airflow direction board can be switched to the maximal position. c. Quitting condition: The fixed frequency heating can be quitted after receiving the remote signal, and the system will enter the remote setting status.

7.1.19 Test program

First, connect the test program terminal on the mainboard. Then connect the system to the power circuit. The test program will operate as follows. HV series display: The buzzer rings for one time—the signal will be sent to outdoor system for 0.5 second— the violet is sent for 0.5-- the background light turns to white—the back ground light turns to white—the background light turns to white—the background li

ght is fully lighted for 0.5 second—LED screen lights for

0.5 second— the step-in motor fully output for 0.5 second—then the motor doesn’t output for 0.5 second—the motor fully output again for 0.5 second. The test program finishes.

20

Functions and Control

Domestic air conditioner

7.1.20 Time cutting function:

Connect the test program terminal on the mainboard after connecting the system to the power circuit. The CPU of the main control will be 60 times faster.

7.2 Value of thermistor

Room sensor and Pipe Sensor

R25 =10K 3% B25

/50 =3700K 3%

Temp.(( °F ))

Max.(K

) Normal(K ) Min.(K )

Tolerance(

)

-22 165.2170 147.9497 132.3678 28.51 35.15

-20.2 155.5754 139.5600 125.0806 28.53 35.13

-18.4 146.5609 131.7022 118.2434 28.56 35.11

-16.6 138.1285 124.3392 111.8256 28.60 35.08

-14.8 130.2371 117.4366 105.7989 28.63 35.06

-13 122.8484 110.9627 100.1367 28.67 35.04

-11.2 115.9272 104.8882 94.8149 28.71 35.01

-9.4 109.4410 99.1858 89.8106 28.74 34.99

-7.6 103.3598 93.8305 85.1031 28.76 34.95

-5.8 97.6556 88.7989 80.6728 28.80 34.93

-4 92.3028 84.0695 76.5017 28.83 34.92

-2.2 87.2775 79.6222 72.5729 28.87 34.88

-0.4 82.5577 75.4384 68.8710 28.90 34.86

-1.4 78.1230 71.5010 65.3815 28.94 34.83

-3.2 73.9543 67.7939 62.0907 28.98 34.79

-5 70.0342 64.3023 58.9863 29.01 34.77

-6.8 66.3463 61.0123 56.0565 29.05 34.74

-8.6 62.8755 57.9110 53.2905 29.08 34.72

-10.4 59.6076 54.9866 50.6781 29.12 34.68

-12.2 56.5296 52.2278 48.2099 29.16 34.65

-14 53.6294 49.6244 45.8771 29.19 34.63

15.8 50.8956 47.1666 43.6714 29.23 34.59

17.6 48.3178 44.8454 41.5851 29.28 34.56

19.4 45.8860 42.6525 39.6112 29.32 34.52

21.2 43.5912 40.5800 37.7429 29.35 34.50

23 41.4249 38.6207 35.9739 29.39 34.47

24.8 39.3792 36.7676 34.2983 29.43 34.43

26.6 37.4465 35.0144 32.7108 29.46 34.39

28.4 35.6202 33.3552 31.2062 29.52 34.36

30.2 33.8936 31.7844 29.7796 29.55 34.32

32 32.2608 30.2968 28.4267 29.59 34.30

33.8 30.7162 28.8875 27.1431 29.62 34.27

21

Functions and Control

Domestic air conditioner

35.6 29.2545 27.5519 25.9250 29.68 34.23

37.4 27.8708 26.2858 24.7686 29.71 34.20

39.2 26.5605 25.0851 23.6704 29.75 34.16

41 25.3193 23.9462 22.6273 29.79 34.12

42.8 24.1432 22.8656 21.6361 29.84 34.09

44.6 23.0284 21.8398 20.6939 29.88 34.05

46.4 21.9714 20.8659 19.7982 29.93 34.02

48.2 20.9688 19.9409 18.9463 29.97 33.96

50 20.0176 19.0621 18.1358 30.00 33.93

51.8 19.1149 18.2270 17.3646 30.06 33.89

53.6 18.2580 17.4331 16.6305 30.09 33.85

55.4 17.4442 16.6782 15.9315 30.15 33.82

57.2 16.6711 15.9601 15.2657 30.18 33.78

59 15.9366 15.2770 14.6315 30.24 33.73

60.8 15.2385 14.6268 14.0271 30.27 33.69

62.6 14.5748 14.0079 13.4510 30.33 33.66

64.4 13.9436 13.4185 12.9017 30.36 33.62

66.2 13.3431 12.8572 12.3778 30.42 33.57

68 12.7718 12.3223 11.8780 30.45 33.53

69.8 12.2280 11.8126 11.4011 30.51 33.49

71.6 11.7102 11.3267 10.9459 30.54 33.44

73.4 11.2172 10.8634 10.5114 30.60 33.40

75.2 10.7475 10.4216 10.0964 30.65 33.35

77 10.3000 10.0000 9.7000 30.65 33.35

78.8 9.8975 9.5974 9.2980 30.63 33.37

80.6 9.5129 9.2132 8.9148 30.56 33.34

82.4 9.1454 8.8465 8.5496 30.49 33.49

84.2 8.7942 8.4964 8.2013 30.43 33.55

86 8.4583 8.1621 7.8691 30.36 33.62

87.8 8.1371 7.8428 7.5522 30.29 33.67

89.6 7.8299 7.5377 7.2498 30.24 33.75

91.4 7.5359 7.2461 6.9611 30.16 33.80

93.2 7.2546 6.9673 6.6854 30.09 33.87

95 6.9852 6.7008 6.4222 30.02 33.93

96.8 6.7273 6.4459 6.1707 29.97 34.00

98.6 6.4803 6.2021 5.9304 29.89 34.05

100.4 6.2437 5.9687 5.7007 29.82 34.12

102.2 6.0170 5.7454 5.4812 29.75 34.20

104 5.7997 5.5316 5.2712 29.68 34.25

105.8 5.5914 5.3269 5.0704 29.61 34.32

107.6 5.3916 5.1308 4.8783 29.53 34.39

109.4 5.2001 4.9430 4.6944 29.46 34.45

111.2 5.0163 4.7630 4.5185 29.39 34.52

22

Functions and Control

Domestic air conditioner

113 4.8400 4.5905 4.3500 29.32 34.59

114.8 4.6708 4.4252 4.1887 29.25 34.65

116.6 4.5083 4.2666 4.0342 29.17 34.72

118.4 4.3524 4.1145 3.8862 29.10 34.79

120.2 4.2026 3.9686 3.7443 29.03 34.86

122 4.0588 3.8287 3.6084 28.94 34.92

123.8 3.9206 3.6943 3.4780 28.87 34.99

125.6 3.7878 3.5654 3.3531 28.80 35.06

127.4 3.6601 3.4416 3.2332 28.72 35.13

129.2 3.5374 3.3227 3.1183 28.63 35.20

131 3.4195 3.2085 3.0079 28.56 35.28

132.8 3.3060 3.0989 2.9021 28.49 35.33

134.6 3.1969 2.9935 2.8005 28.40 35.40

136.4 3.0919 2.8922 2.7029 28.33 35.47

138.2 2.9909 2.7948 2.6092 28.26 35.55

140 2.8936 2.7012 2.5193 28.17 35.62

141.8 2.8000 2.6112 2.4328 28.09 35.69

143.6 2.7099 2.5246 2.3498 28.00 35.76

145.4 2.6232 2.4413 2.2700 27.93 35.83

147.2 2.5396 2.3611 2.1932 27.84 35.91

149 2.4591 2.2840 2.1195 27.75 35.98

150.8 2.3815 2.2098 2.0486 27.68 36.05

152.6 2.3068 2.1383 1.9803 27.59 36.12

154.4 2.2347 2.0695 1.9147 27.52 36.21

156.2 2.1652 2.0032 1.8516 27.43 36.28

158 2.0983 1.9393 1.7908 27.34 36.36

159.8 2.0337 1.8778 1.7324 27.27 36.43

161.6 1.9714 1.8186 1.6761 27.18 36.50

163.4 1.9113 1.7614 1.6219 27.09 36.57

165.2 1.8533 1.7064 1.5697 27.00 36.64

167 1.7974 1.6533 1.5194 26.91 36.73

168.8 1.7434 1.6021 1.4710 26.82 36.81

170.6 1.6913 1.5528 1.4243 26.74 36.88

172.4 1.6409 1.5051 1.3794 26.65 36.95

174.2 1.5923 1.4592 1.3360 26.56 37.04

176 1.5454 1.4149 1.2942 26.47 37.11

177.8 1.5000 1.3721 1.2540 26.38 37.18

179.6 1.4562 1.3308 1.2151 26.29 37.27

181.4 1.4139 1.2910 1.1776 26.20 37.35

183.2 1.3730 1.2525 1.1415 26.11 37.42

185 1.3335 1.2153 1.1066 26.02 37.51

186.8 1.2953 1.1794 1.0730 25.92 37.58

188.6 1.2583 1.1448 1.0405 25.83 37.67

23

Functions and Control

Domestic air conditioner

190.4 1.2226 1.1113 1.0092 25.74 37.74

192.2 1.1880 1.0789 0.9789 25.65 37.83

194 1.1546 1.0476 0.9497 25.56 37.90

195.8 1.1223 1.0174 0.9215 25.45 37.99

197.6 1.0910 0.9882 0.8942 25.36 38.07

199.4 1.0607 0.9599 0.8679 25.27 38.16

201.2 1.0314 0.9326 0.8424 25.16 38.23

203 1.0030 0.9061 0.8179 25.07 38.32

204.8 0.9756 0.8806 0.7941 24.98 38.39

206.6 0.9490 0.8558 0.7711 24.87 38.48

208.4 0.9232 0.8319 0.7489 24.78 38.55

210.2 0.8983 0.8088 0.7275 24.67 38.64

212 0.8741 0.7863 0.7067 24.58 38.73

213.8 0.8507 0.7646 0.6867 24.48 38.80

215.6 0.8281 0.7436 0.6672 24.39 38.89

217.4 0.8061 0.7233 0.6484 24.28 38.98

219.2 0.7848 0.7036 0.6303 24.19 39.06

221 0.7641 0.6845 0.6127 24.08 39.15

222.8 0.7441 0.6661 0.5957 23.97 39.24

224.6 0.7247 0.6482 0.5792 23.88 39.33

226.4 0.7059 0.6308 0.5632 23.77 39.42

228.2 0.6877 0.6140 0.5478 23.67 39.49

230 0.6700 0.5977 0.5328 23.56 39.58

231.8 0.6528 0.5820 0.5183 23.47 39.67

233.6 0.6361 0.5667 0.5043 23.36 39.76

235.4 0.6200 0.5518 0.4907 23.25 39.85

237.2 0.6043 0.5374 0.4775 23.14 39.94

239 0.5891 0.5235 0.4648 23.04 40.01

240.8 0.5743 0.5100 0.4524 22.93 40.10

242.6 0.5600 0.4968 0.4404 22.82 40.19

244.4 0.5460 0.4841 0.4288 22.71 40.28

246.2 0.5325 0.4717 0.4175 22.60 40.37

248 0.5194 0.4597 0.4066 22.50 40.46

24

System configuration

Domestic air conditioner

8 System configuration

8.1System configuration

After the installation and test operation of the room air conditioner have been completed, it should be

operated and handled as described below. Every user would like to know the correct method of operation of the room air conditioner, to check if it is capable of cooling(or heating) well, and to know a clever method of using it. In order to meet this expectation of the users, giving sufficient explanations taking enough time can be said to reduce about 80% of the requests for servicing. However good the installation work is and however good the functions are, the customer may blame either the room air conditioner or its installation work because of improper handling. The installation work and handing over of the unit can only be considered to have been completed when its handling has been explained to the user without using technical terms but giving full knowledge of the equipment.

8.2 Instruction

25

Display board

Signal receiver hole

COOL display

HEALTH display

4

2

3

1

5

DRY display

6

Ambient temp.display

When receiving the remote control signal, display the set temperature.

2

3

5

6

4

HEAT display

1

Outlet

Horizontal flap

Display board

(adjust up and down air flow Don't adjust it manually)

(adjust left and

ow)

Vertical blade

Emergency

Switch

right air fl

Inlet

Air Purifying Filter

(inside)

Inlet grille

Anion generator

(inside)

Actual inlet grille may vary from the one shown in the manual according to the product purchased

The unit pictured above is for reference only. Your product may appear different.

4

Outdoor Unit

4

Inserting the Battery

Parts and Functions

Indoor Unit

OUTLET

INLET

CONNECTING PIPING AND ELECTRICAL WIRING

DRAIN HOSE

Remote Control

Hint: Remove the batteries if the unit won't be in use for a long period. If there is any display after taking-out the batteries, just press reset key.

1. Mode display

2. Signal sending display

4. FAN SPEED display

5. LOCK display

6. TIMER OFF display TIMER ON display

LO MED HI

7.TEMP display

16. LOCK button

Used to lock buttons and LCD display.

25. RESET button If the remote is not functioning properly,

use a pen point or similar object to depress the button to reset the remote

22. HOUR button

Operation mode

NAFOTUA COOL DRY

Remote controller

HEAT

1

2

3

4

5

9

10

11

12

13

14

15

16 17

22

23

24

25

19

20

21

8

18

7

6

Control the lightening and extinguishing of the indoor LED display board.

3. SWING display

8

.

9. QUIET button

10. HEAT button

11. COOL button

12. AUTO button

13. FAN button

14. TIMER button

15. HEALTH button

17. LIGHT button

18. POWER ON/OFF button

19. DRY button

20. TEMP button

21. SWING button

23. EXTRA FUNCTION button

24.CANCEL/CONFIRM button

AUTO

Function: Setting and cancel to the timer and other additional functions.

Display circulated

Operation mode

Remote controller

QUITE

POWER

SLEEP

HEALTH

Additional functions display

Healthy function is not available for some units.

1 2

3

4

Remove the battery cover;

Insert the batteries as illustrated.

2 AAA batteries.

+ -.

Then put on the cover again.

Note:

1

2

3

Be sure battery polarity is correct

The distance from the remote to the receiver should be less than 23 feet (7 meters) with no obstructions. Fluorescent lights or cordless telephones will reduce the range of the remote.

If the display is dim the remote batteries may need to be replaced.

Remote malfunctions can sometimes be corrected by removing the batteries for a few minutes and then replacing them.

Function：Fan Mode— Healthy airflow upwarder — Healthy airflow downwarder— Reset the healthy airflow position — Right & left airflow setting— A-B yard— 50

°F

low temperature heating— Sleep Mode— Electrical Heating— Refresh Air— Power — Fahrenheit/Celsius mode shift on unit and remote Remark：A-B yard, Right & left airflow setting, 50

°F low temperature heating,

Electrical Heating, Refresh Air functions are not available for this mini split series.

Installation

Domestic air conditioner

26

Operation

Air Flow Direction Adjustment

Press FAN button. For each press, fan speed

follows:

Remote controller:

Press

button

Every time the button is pressed, temp.setting increase 1

o

C / 2 F, if kept depressed, it will

increase rapidly

Every time the button is pressed, temp.setting

decrease 1

o

C / 2 F, if kept depressed, it will

decrease rapidly

Select a desired temperature.

4.Fan speed selection

3.Select temp.setting

The air conditioner will be running at the speed shown in the display. When FAN is set to AUTO, the air conditioner automatically adjusts the fan speed according to room temperature.

1. Unit start

Press ON/OFF on the remote controller, unit starts.

/

Basic Operation

at air outlet if all vertical louvers are right.

Note:

changes as

COOL/DRY:

HEAT:

Initial state

o

Beep-Beep

stereoscopic air flow

Display

circulated

LOW

MED HI

AUTO

Remote controller

1.Status display of air flow

When restarting the unit after it has been turned off, the unit will keep the swing position before it stops working.

2.Left and right air flow adjustment

(manual)

Cautions:

When adjusting the louver by hand,turn off the unit.

When humidity is high,condensate water might occur

adjusted to left or

It is advisable not to keep horizontal louver at downward position for a long time in COOL or DRY

mode ,otherwise, condensate water might occur.

Emergency Operation and Test Operation

Operation

Mode

Remote

Controller

Note

In DRY mode , when room temperature is 2 C/4 F degrees

o

less than the temperature set point, the unit will run intermittently at LOW speed regardless of FAN setting.

Under the mode of auto operation, air conditioner will automatically select Cool or Heat operation according to

room temperature. When FAN is set to AUTO the air conditioner automatically adjusts the fan speed according to room temperature.

In FAN operation mode , the unit will not operate in COOL or HEAT mode but only in

FAN mode, AUTO is not available in FAN mode. And temp. setting is disabled. In FAN mode, sleep operation is not available.

Emergency Operation:

Use this operation only when the remote controller is defective or lost, and with function of emergency running, air conditoner can run automatically in few seconds.

When power switch is turned on for the first time and emergency operation starts, the unit will run automatically in the following modes:

Room temperature

Designated temperature

Timer mode

Fan

speed

Operation

mode

Above 23℃/73℉ 26℃ / 79℉

Below 23℃/73℉ 23℃ / 73℉

No

AUTO

COOL

HEAT

No

During emergency operation it is impossible to change the settings of temp. and fan speed,It is also not possible to

operate in Timer or Dry mode.

the room

temperature is below 16

℃ / 60℉

,

Test Operation:

Use this switch in the test operation when

do not use it in the normal operation.

Test ope ration switch is the same as emergency switch.

Under this operation mode,the fan motor of indoor unit will run in high speed.

1

4

3

2. Select operation mode

2

COOL button:Cooling mode HEAT button: Heating mode DRY button: Dehumidify mode

Beep

DRY

COOL

AUTO

HEAT

FAN

In HEAT mode, warm air will blow out after a short period of the time due to cold-draft prevention function. When FAN is set to AUTO, the air conditioner automatically adjusts the fan speed according to room temperature.

When the emergency operation switch is pressed, the unit beeps once, which starts the operation.

from the switch: the cooling operation

Continue to press the test operation switch for more than 5 seconds.After

you hear two beeps, release your finger

starts with the air flow speed "HI".

Move the vertical louver by a knob on air to adjust left and right direction to achieve stereoscopic air flow as the figure below.

conditioner

o

Installation

Domestic air conditioner

27

Operation

Sleep Operation

5.Fan Speed in Sleep Mode

When the unit is set to sleep mode, the fan speed will be set to low speed and it cannot be changed.

Operation Mode

1. In COOL,DRY mode

SLEEP operation starts SLEEP operation stops

SLEEP operation starts

SLEEP operation stops

Approx.6hrs

1 hr

3 hrs

Rises 1OC/ 2 F

Rises 1

O

C/ 2 F

Rises 1OC/ 2 F

Temp.setting

Unit stop

In COOL, DRY mode

In HEAT mode

Decreases 2OC/ 4 F

Decreases 2

O

C/ 4 F

1 hr

2.

3.

In HEAT mode

In AUTO mode

4. In FAN mode

It has no SLEEP function.

Note

When TIMER function is set, the sleep function can’t be set up .After the sleep function is set up, if user set up TIMER function, the sleep function will be cancelled; the machine will be in the state of timing-on.

Power/Quiet Operation

1 hour after SLEEP mode starts,temp.will become higher than temp.setting.After another 1 hour,temp.rises by 1 / 2 F futher. The unit will run for an additional 6 hours then stops Temp. is higher than temp.setting so that room temperature won’t be too low for your sleep.

1 hour after SLEEP mode starts,temp will become 2 4 F lower than temp.setting.After another 1 hour,temp decrease by 2

C / 4 F futher.After more another 3 hours,

temp.

rises by 1 C / 2 F futher.The unit will run for an additional 3 hours then stops.Temp.is lower than temp. setting so that room temperature won’t be too high for your sleep.

If the unit is running cooling, the sleep mode will follow the function as in cool mode, while follow as in heat mode.

O

C

O

1

O

C/2 F

O

C /

Press button to enter additional options, cycle the display to , will flash. And then press enter for sleep function.

(1)

Power Operation

(2)

Quiet Operation

Note

When you need rapid heating or cooling, you can use this function.

You can use this function when silence is needed for rest or

Running the unit in QUIET mode for a long period may cause the room temperature to not reach the set temperature. If this occurs, cancel QUITE mode and set the fan speed to a higher setting.

reading.Press QUIET button, the remote controller will show , and then achieve to the quiet function. To cancel this function, press the QUIET button.

Press button to enter additional options, cycle the display to , will flash，and then press ,enter to power function. To cancel this function, please select a different option.

O

Installation

Domestic air conditioner

28

Operation

1.After unit starts, select your desired operation mode.

2.Press TIMER button to change TIMER mode. Every time the button is pressed, display changes as follows: Remote controller:

BLANK

TIMER ON TIMER OFF TIMER ON-OFF

Then select your desired TIMER mode (TIMER ON or TIMER OFF or TIMER ON-OFF). " "or " "will flash.

3.Press / button to set time.

It can be adjusted within 24 hours.

Hints:

After replacing batteries or a power failure happens, time

setting should be reset. According to the Time setting sequence of TIMER ON or TIMER OFF, either Start-Stop or Stop-Start can be achieved.

Timer On/Off On-Off Operation

Healthy Airflow Operation

1.Press to start

Setting for comfortable conditions.

2.The setting of healthy airflow function

Note:

1.After setting the healthy airflow function, the position

louver is fixed.

4.In cooling and dry, using the air conditioner for a long time under the high air humidity, condensate water may occur at the grille .

3.To cancel of the healthy airflow function

Notice: Do not direct the horizontal louver by hand. This may cause the louver to run incorrectly and not match the display. If the louver is not running correctly, stop the unit

for a minute and then restart and adjust remote controller.

2.In heating, it is better to select the

3.In cooling, it is better to select the

mode.

TIMER OFF-ON

0.5h

0.5h 0.5h

0.5h

Press the button for each time, setting time in the first 12 hours increased by 0.5 hour every time, after 12 hours,increased by 1 hour every time.

Press the button for each time, setting time in the first 12 hours decreased by 0.5 hour every time, after 12 hours,decreased by 1 hour every time.

After adjusting the time,press button and confirm the time the ON or OFF button will not flash any more.

4.Confirm timer setting

5.Cancel timer setting Press the timer button until the time display eliminated.

Press button to enter additional options,Press this button continuously, the louvers location will cycle between the following three locations, to choose the swing location what you want, then button to confirm.

Press button to enter additional options,Press this button continuously, the louvers location will cycle between the three locations again, then button to cancel.

Healthy airflow upwarder

Healthy airflow downwarder

Present position

Domestic air conditioner

29

Installation

Maintenance

Setting of proper room temperature

Close doors and windows during operation

If the unit is not to be used for a long time, turn off the power supply main switch.

Use the timer effectively

Use the louvers effectively

Do not block the air inlet or outlet

Proper

temperature

During cooling operation

prevent the penetration of

direct sunlight with

curtain or blind

OFF

Remote Controller Indoor Unit

1.Open the lnlet Grille

2.Detach the Standard Air Filter

3.Attach Air Purifying Filter

4.Attach the standard air filter

(Necessar

y installation)

5.Close the Inlet Grille

Close the inlet grille securely

Slide the knob slightly up

ward to

release the filter, then withdraw it.

Put air purifying filter into the

right and left filter frames.

NOTE:

The photocatalyst air purifying filter will be solarized in fixed time. In normal use, it will be solarized every 6 months.

Prop up the inlet grille by using the

grille-support located an the right

ATTENTION:

Please keep the bacteria-killing medium air purifying filter

The bacteria-killing medium air purifying filter will be used for a long time,no need for replacement. But in the period of using them ,you should remove the dust frequently by

side of the indoor unit.

using vacuum cleaner or flapping them lightly,otherwise ,

its performance will be affected.

cool and dry. Avoid long term exposure to sunlight when not in use as its ability to sterilize will be reduced.

For Smart Use of The Air Conditioner

Replacement of Air Purifying Filter

The white side of the photocatalyst air purifying filter faces outside,and the black side faces the unit The green

side of the bacteria-killing medium air purifying filter faces outside,and the white side faces the unit.

Do not use water, wipe the remote with a dry cloth. Do not use glass cleaner or a chemicals.

Wipe the air conditioner by using a soft and dry cloth.For serious stains,

use a neutral detergent diluted with water.Wring the water out of the cloth before wiping,then wipe off the detergent completely.

Air Filter Cleaning

Open the inlet grille by pulling it upward.

Remove the filter.

Clean the filter.

Attach the filter.

Close the inlet grille.

Push up the filter's center tab slightly until it is

from the stopper, and remove the filter do

wnw

ard.

Use a vacuum cleaner to remove dust, or wash the filter with water.After washing, dry the filter completely before putting it back in

Attach the filter correctly so that the "FRONT" indication

facing to the front.Make sure that the filter is

fixed behind the stopper.If the right

attached correctly, that

Do not use the following for cleaning

Gasoline,benzine, thinner or cleanser

ay

damage the coating of the unit.

Hot water over 40

O

C(104OF) may

discoloring or deformation.

Once every two weeks

m

cause

released

is

completely

and left filters are not

may cause defects.

Detach old Air Purifying Filter

the unit.

Installation

Domestic air conditioner

30

the power supply cord.

2.

Do not install in the place where there is any possibility of inflammable gas leakage around the unit.

3.Do not get the unit exposed

to vapor or oil steam.

Cautions

Connect the earth cable.

earthing

WARNING

If something abnormal occurs immediately stop the operation button and contact service technician.

OFF

Connect to a single circuit outlet.

ENFORCEMENT

Connect power supply cord to the outlet completely

Use the proper voltage

Do not use power supply cord in a bundle.

Take care not to damage

the power supply cord.

1.Do not use extension cords or plug adapters.

STRICT

ENFORCEMENT

STRICT

ENFORCEMENT

PROHIBITION

Do not start or stop the

operation by disconnecting

Do not channel the air flow directly at people.

Do not attempt to repair the unit. Call for an authorized service technician.

Do not place or store any objects on the indoor unit.

CAUTION

Take fresh air occasionally especially when gas appliance is running at the same time.

PROHIBITION

STRICT

ENFORCEMENT

Do not operate the switch with wet hand.

PROHIBITION

Do not install the unit near a fireplace or other heating apparatus.

Install the outdoor unit securely on a base.

Do not pour water onto the unit for cleaning

PROHIBITION

Do not place animals or plants in the direct path of the air flow

Do not place any objects on or climb on the outdoor unit.

Do not place flower vase or water containers on the top of the unit.

Do not insert objects into the air inlet or outlet of the outdoor unit..

PROHIBITION

STRICT ENFORCEMENT

Check proper installation of the drainage securely

WARNING

Do not install the air conditioner by yourself improper installation may cause fire, water

This system must be installed by a qualified HVAC professional.

leakage, personal injury or death.

Domestic air conditioner

31

Installation

Trouble shooting

Normal performance inspection

Noise is heard

Phenomenon

Cause or check points

The system

immediately.

Odors are present

Mist or steam are

Multiple

check

Poor cooling

When unit is stopped, it won't restart

elapsed to protect the system. When the electric plug is pulled out

and reinserted, the protection circuit

During unit operation or at stop, a swishing or gurgling noise may

(This noise is generated by

refrigerant flowing in the system.) Should there be a big noise from

filter may be too dirty.

The system circulates any remaining odors.

During COOL or DRY operation,

This is due to the sudden cooling

Is the power chord correctly position in the outlet? Is there a power failure? Has a fuse or circuit breaker been tripped?

Is the air filter dirty?

Are there any obstacles in front of

Is temperature set correctly? Are there some doors or

Is there any direct sunlight through the window during the

Are there too many heat sources or too many people in the room during cooling?

In dry mode,

fan speed can’t be changed.

In DRY mode, when room temperature

setting+35.6

o

F,unit will run

regardless of FAN setting.

cooling operation?(Use curtain)

windows left open?

inlet and outlet?

Normally it should be cleaned every 14 days.

intermittently at LOW speed

becomes lower than temp.

indoor unit may blow out mist.

of indoor air.

air flow in unit operation, air

be heard.At first 2-3 minutes after

unit start, this noise is more noticeable.

will work for 3 minutes to protect the

air conditioner.

immediately until 3 minutes have

Cautions

Do not obstruct or cover the ventilation

conditoner.Do not put fingers

inlet/outlet and

swing louver.

Do not allow children to play with the air

conditioner

case should children be

allowed to sit on the outdoor unit.

1.Applicable ambient temperature range:

Specifications

The machine is adaptive in following

situation

The power plug and connecting cable

acquired the local

2. If the power supply cord is damaged, it

must be replaced

manufacturer

3. All electrical wiring must be done to applicable local and state codes.

4. An electrical outlet must be within distance of the indoor unit.

5. When replacing batteries, the batteries removed should be disposed of properly.

6. Assure that the proper outlet is being used with the power cord.

8. In order to protect the units,please turn off the unit first, wait 30 seconds and turn off the power.

7.

grille of the air

or any objects into the

.In no

or its service agent.

must have

Before calling for service, check the following first.

blown out.

does not restart

by the

attestation.

The refrigerating circuit is a sealed system.

Cooling

Indoor

Maximum:D.B/W.B

D.B

Maximum:D.B

D.B

Minimum:D.B/W.B

Maximum:D.B/W.B Minimum:D.B/W.B

Outdoor

Indoor

Outdoor

Heating

89.6 /73.4

75 /65

115 /75

80.6

67 /57

Outdoor

Maximum:D.B/W.B Minimum:D.B

5

(INVERTER)

32

Minimum:

67 /57

75 /65

19.4

Installation

Domestic air conditioner

32

Drawing for the installation of indoor and outdoor units

Necessary Tools for Installation

●

Torque wrench

●

(0.67 in,0.87in ,1.02in)

Nipper

●

Reamer●

Hacksaw●

Pipe cutter●

Gas leakage detector or● soap-and-water solution

Hole core drill●

Flaring tool●

Spanner(0.67,0.75 and 1.02in )●

Knife● Measuring tape●

●

Selection of Installation Place

Power Source

Preparation

The above picture is for reference only. Your product may look different.

Read this manual before installation Explain the operation of the unit to the user according to this manual

Installation Manual of Room Air Conditioner

F

A

C

E

D

Optional parts for piping

Non-adhesive tape Adhesive tape Saddle (L.S) with screws Connecting electric cable

for indoor and outdoor

Drain hose Insulating material

Piping hole cover

Floor ﬁxing dimensions of the outdoor unit

Fixing of outdoor unit

Fix the unit to concrete or block●

with bolts

(10mm) securely.

When ﬁtting the unit to wall

●

surface, roof or

rooftop, ﬁx the unit securely in consideration of

earthquake and strong wind.

If vibration may affect the

●

house, ﬁx the unit

by attaching a

vibration-proof mat.

The marks from to

in the ﬁgure are the

name of the parts. The distance between the indoor unit and the ﬂoor should be more than 2m or 6 feet.

The models adopt HFC free refrigerant R410A

more than 10cm

more than 5cm

more than

more than10cm

more than 15cm

more than 60cm

A

G

●

A

F

C

E

D

G

B

Arrangement of piping directions

Rear left

Left

Rear right

Right

Below

G

Attention must be paid to

the pitch of drain hose

X Y X

Z

Dimensions(inches)

Model

x y z

Hammer

●

Place where the distance of more than lm from televisions, radios, wireless apparatuses and ﬂuorescent lamps 3 feet or approximately.

●

In the case of ﬁxing the remote controller on a wall, place where the indoor unit can receive signals when the ﬂuorescent

●

lamps in the room are in use.

●

A distance marked

●



is available as illustrated in the below ﬁgure.

Indoor Unit - Select a location that is

Outdoor Unit - Select a location that is

Robust not causing vibration, where the unit can be supported s ufﬁciently. Not affected by heat or steam generated in the vicinity, and where the inlet and outlet of the unit are not disturbed. Possible to drain easily, and where piping can be connected with the outdoor unit.

Where conditioned air can be spread in a room evenly.

Less affected by rain or direct sunlight and is sufﬁciently ventilated. Strong enough to bear the unit, where vibration and noise are not increased.

Not causing a nuisance to neighbors due to discharged air or noise.

(Unit: inch)

5 1/2

19 2/3

10 1/16

（2 inches）

(4 inches)

（4 inches）

more than10cm

（4 inches）

（5 7/8 inches）

（24 inches）

All wiring to the unit must be in accordance with the National Electric code and local ordinances.

HSU12VHGL-W

System configuration

Domestic air conditioner

33

10cm

Indoor unit

Make a hole of B mm / inches

in diameter, slightly descending

to outside the wall.

●

Install piping hole cover and seal it off with putty after installation

●

When the mounting plate is ﬁrst ﬁxed

1. Carry out, based on the wall studs or lintels, a

to be ﬁxed against the wall, then temporarily fasten the plate with one nail.

2. Ensure

the proper level of the plate, by

hanging a thread with a

weight from the central top of the plate, then fasten the plate.

3. Find the wall hole location A using a measuring tape

1

Fitting of the Mounting Plate and

Positioning of the wall Hole

Lid for right piping

Lid for under piping pipe

Fix with adhesive tape

Lid for left piping

Indoor/outdoor electric cable and drain hose must be bound with refrigerant

●

piping with adhesive.

[ Other direction piping ]

Cut away, with a nipper, the lid for piping according to the piping direction and

●

then bend the pipe according to theposition of wall hole. When bending, be

careful not to crush

pipes.

Make sure that the wires connecting the indoor and outdoor units are not covered by the refrigeration piping insulation and are long enough to connect to the terminal block on the indoor unit.

●

proper leveling for the plate

2

Making a Hole on the Wall and Fitting the Piping Hole Cover

Drawing of pipe

3

Installation of the Indoor Unit

[ Rear piping ]

Draw pipes and the drain hose, then fasten them with the adhesive tape

●

[ Left·Left-rear piping ]

In case of left side piping, cut away, with a nipper, the lid for left piping.

●

In case of left-rear piping, bend the pipes according to the piping direction to

●

the mark of hole for left-rear piping which is marked on insulation materials.

1. Insert the drain hose into the carity of heat insulation materials of indoor unit.

2. Insert the indoor/outdoor electric cable from backside of indoor

unit, and pull it

out o

n the front side, then connect them.

3. Coat the ﬂaring seal face with refrigerant oil and connect pipes.

Cover the tubing connection with insulation materials closely, and with adhesive tape.

Fixing the indoor unit body

Hang the unit body onto the upper notches of the

●

mounting plate. Move the body from side to side to verify

its

secure ﬁxing.

In order to ﬁx the body onto the mounting plate,hold up

●

the body from the underside and then put it down perpendicularly.

mounting plate

When you unload the indoor unit,please use

lift the bottom of the body outward slightly and lift the unit until it leaves the mounting plate.

agraffe

mounting plate

Unloading of indoor unit body

●

your hand to raise the body , then

Remote controller (1)

AAA dry battery (2)

Mounting plate (1)

Drain hose (1)

Ø4X25 Screw

(4)

Plastic cap (4)

Drain-elbow (1)

Cushion (4)

Pipe supporting plate (1)

Accessory parts

NOTE：The thickness of the pipe must be 0.8mm(1/16”) at least.

Selection of pipe

Insulation material

Drain hose

Piping

Pipe supporting plate

Indoor/outdoor electric c able

Indoor side

Outdoor side

ØBmm

Wall hole

Thickness of wall

(Section of wall hole)

Piping hole pipe

G

Model Liquid pipe (Ø)

Gas pipe (Ø)

6.35mm (1/4")

12.7mm (1/2")

09k/12k : B= 60mm(2 3/8 inches) 18k/24k : B=70mm(2 3/4 inches)

Pitch downward for drainage

Pay attention to the following points before installation of machine:

1. Take out cushion blocks on the left and right angle beads as shown in the following Figure.

2. Remove 2 gaskets under the cross-flow fan.

3. Clean the burr on the surface of fracture to avoid the power wire from being scratched after removing the virtual opening of the outgoing line slot on the case by hands in indoor power-on process.

HSU18VHGL-W

A=145mm

B= 60mm

30mm

A=145mm

B= 60mm

30mm

A=125mm

B= 70mm

30mm

Domestic air conditioner

34

Installation

Outdoor unit

Indoor unit

A

B

Outdoor unit

Indoor unit

A

B

A

B

Outdoor unit

Indoor unit

Oil trap

Outdoor unit

Install according to the instructions on the 1st page of this manual

When bending the interconnect tubing, ensure the radius is at least 1 1/4" to 1 3/4", 30mm to 40mm to ensure against crushing the tubing.

●

Connecting the pipe of gas side ﬁrst makes working easier.

●

Ensure the interconnecting tubing is approved for R410A.●

Installation of Outdoor Unit

Half union

Flare nut

Torque wrench

CAUTION

Spanner

Forced fastening without careful centering may damage the threads and cause a leakage of gas.

1

Connection of pipes

2

1. If the supply cord is damaged, it must be replaced by the manufacturer or its

service agent or a similar qualiﬁed person. The type of connecting wire is

H05RN-F

or H07RN-F.

2. If the fuse on PC board is broken please change it with the

type of

3. The wiring method should be in line with the local wiring standard.

4. Use an HVACR circuit breaker or time delay fuse.

T.3.15A/250VAC (Indoor), T.25A/250VAC (Outdoor).

4

Connecting the indoor/outdoor Electric Cable

Removing the wiring cover

Remove terminal cover at right bottom corner of indoor unit, then take off● wiring cover by removing its screws.

1. Insert the cable from the outside into the unit through the same hole that has the interconnecting tubing.

2. Pull out the cable on the front side, and connect the cable

making a loop.

Note

When connecting the cable, conﬁrm the terminal number of indoor and outdoor units carefully. If wiring is not correct, the unit will not operate

When connecting the cable after installing the indoor unit

When connecting the cable before installing the indoor unit

{

Indoor unit

Outdoor unit

1

2

N

2

) (

3

(C)

L

1

) (

•

Max.Elevation: Amax = 32.8ft / 10m (09k / 12k) = 50ft / 15m (18k / 24k)

•

In case the elevation A is more than 16.4ft / 5m, oil trap shoud be installed every 5~7m(16.4ft-23ft)

•

Max. Length: Bmax = 50ft / 15m (09k / 12k) = 83.3ft / 25m (18k / 24k)

●

Insert the cord from the back side of the unit, then pull it out on the front side. Fasten the unit wire harness to the conduit holder using the lock nut. Position the conduit holder to its original state using screw.

Power cable:

3wire with ground 14AWG

Power Wiring

4wire 14AWG

Control Wiring

Pipe Diameter(ǿ) Fastening torque

Liquid side6.35mm(1/4") 18N.m/13.3Ft.lbs

Liquid/Gas side9.52mm(3/8") 42 N.m/30.1Ft.lbs

Gas side 12.7mm(1/2") 55N.m/40.6Ft.lbs

Gas side 15.88mm(5/8") 60 N.m/44.3Ft.lbs

properly and could cause a defect.

Ensure that no dirt or debris enters the tubing. The standard tubing length is 25 ft/7.5M. If a different length is required, adjust the refrigerant amount by 1/2 oz/ft, 50 g/M for the 9k, 12k and 18k models. For the 24k model, adjust by 1/2 oz/ft, 50 g/M.Before opening the service valves, evacuate the interconnecting tubing and indoor unit. Follow the instruction in section 5 on page 4.

Pipe cutting is carried out with a pipe cutter and burs must

●

be removed.

After inserting the ﬂare nut, ﬂaring work is carried out.

●

Cutting and Flaring Work of Piping

Flare tool for R410A Conventional ﬂare tool

Clutch-type clutch-type(Rigid-type) Wing-nut type (Imperial-type)

A

0~0.5mm

1.0~1.5mm

1.5~2.0mm

0~1/51 inch

3/76 ~1/17 inch

1/17 ~1/8 inch

Flare tooling die

1.Cut pipe

2.Remove burs

3.Insert the ﬂare nut

4.Flare pipe

Lean

Damage of ﬂare Partial Too outside

Correct Incorrect

Crack

HSU18VHGL-W

(4G0.75mm )

Installation

Domestic air conditioner

35

Detach the service port’s cap of

1.

3-way valve, and the valve cap for 2-way valve

and 3-way valve. Connect the service port to the low side of the gauge manifold

Open the handle on the low side of the gauge manifold and operate vacuum pump.

2.

Vacuum the tubing for at least 15 minutes. The vacuum level on the low side gauge should be 29.9 in of Hg, 76 cm of Hg, 0.1 MPa. when vacuuming is complete, close the valve on the manifold and turn off the vacuum pump. The vacuum level should hold for 1-2 minutes. If the vacuum level does not hold, check the flared connections and repeat this step.

3.

Purging Method:To use vacuum pump

5

Open

Open the 2-way valve 1/4 turn. After 5-6 seconds, close the valve and inspect for leaks with a leak detector or soap solution.

4.

No gas leakage? Go to step 6.

5.

Detach the charge hose6.

from the service port,

open 2-way valve and 3-way

Gauge manifold

Gaugemanifold(for

R410A)

2-way valve Liquid Side

3-way valve Gas Side

Vacuum pump

Tube(for R410A)

Close

2-way valve

3-way valve

Open 90

O

2-way valve 3-way valve

2-way valve

3-way valve

2-way valve

3-way valve

Valve cap

Service port cap

After attaching the caps, check for leakage around the caps.

7.

8.

Step 1.

Step 2.

Step 3.

Step 7.

Step 6.

Step 4.

The power source must be exclusively used for air

●

conditioner.

In the case of installing an air conditioner in a moist place,

●

please install an ea-

For installation in other places, use an HVACR circuit breaker of time delay fuse.

●

If the refrigerant of the air conditioner leaks, it is necessary to discharge all the

●

according to the amount marked on the name plate.

Please do not let other cooling medium, except speciﬁed one (R410A), or air

●

enter into the cooling circulation system. This could cause high pressure and

1

Power Source Installation

CAUTION

rth leakage breaker.(GFCI)

2

On Drainage

It becomes

high midway.

The gap with the

ground is too small.

There is the bad

smell from a ditch

It waves.

The end is immersed in water.

Please install the drain hose and ensure downward flow. Please don’t do the drainage as shown below.

●

Please pour water in the drain pan of the indoor unit, and

●

is proper.

In case that the attached drain hose is in a room, please

●

apply insulation

to

Less than

5cm

conﬁrm that drainage

to the hose to prevent condensation.

Check Items for Test Run

Please kindly explain to our customers how to operate

through the instruction manual.

Check for Installation and Test Run

■

1

1+2=

kg

R410A

2

kg

2=

1=

B

C

D

F E

kg

A

This product contains fluorinated greenhouse gases covered by the Kyoto Protocol. Do not vent into the atmosphere. Refrigerant type:R410A GWP* value:1975 GWP=global warming potential Please fill in with indelible ink,

• 1 the factory refrigerant charge of the product

• 2 the additional refrigerant amount charged in the field and

• 1+2 the total refrigerant charge

on the refrigerant charge label supplied with the product. The filled out label must be adhered in the proximity of the product charging port (e.g. onto the inside of the stop value cover). A contains fluorinated greenhouse gases covered by the Kyoto Protocol B factory refrigerant charge of the product: see unit name plate C additional refrigerant amount charged in the field D total refrigerant charge E outdoor unit F refrigerant cylinder and manifold for charging

Contains fluorinated greenhouse gases covered by the Kyoto Protocol

Refrigerant charge label■

Put check mark

in boxes

To prevent the gas

leakage,

continues, remove the refrigerant used for the leakage check and flare tubes again. Repeat vacuum and leak and if no leakage, proceed to step 6.

replace the service port and valve caps.

Gas leak from interconnecting tubing?

Installation is on the interconnecting tubing? Are the connecting wirings of indoor and outdoor ﬁrmly

Is the connecting wiring of indoor and outdoor ﬁrmly ﬁxed? Is drainage securely carried out? Is the ground wire securely connected? Is the indoor unit securely ﬁxed? Is power source voltage the local codes? Is there any noise? Are the lights near the unit working normally? Are cooling and heating (when in heat pump) performing

normally?

Is the operation of room temperature control normal?

inserted to the terminal block?

Loosen the screws on

●

terminal block and

insert the wires fully into terminal

block, then tighten the screws.

If wiring is not correct, the unit will not operate properly and it could cause a

●

Fix the cable with a clamp.●

Connection

3

If the drain-elbow is used,● please attach as shown in figure.

(Note:

Only for heat pump unit.)

Attaching Drain-Elbow

4

defect in the unit.

and connect the vacuum pump to the center port of the manifold.

In case of a leak, try tightening the flare connections to fix the leak. If the leak stops, go to step 6. If the leak continues, check the flare connections and repair as needed, then go back to step 3. then proceed step 6. If leak

valve completely.

refrigerant. Repair the leak, vacuum the unit then charge the liquid refrigerant into air conditioner

could cause a leak and lead to personal injuries.

Installation

Domestic air conditioner

36

Seivice diagnosis

Domestic air conditioner

9.Dimensional drawings

10.Center of gravity

37

3.27

0.77

1.06

0.26

1.16

1.12

1.06

0.46

0.77

0.37

Seivice diagnosis

Domestic air conditioner

11 Service Diagnosis

11.1 Caution for Diagnosis

The operation lamp flashes when any of the following errors is detected.

1. When a protection device of the indoor or outdoor unit is activated or when the thermistor malfunctions, disabling equipment operation.

2. When a signal transmission error occurs between the indoor and outdoor units. In either case, conduct the diagnostic procedure described in the following pages.

11.3 Problem Sympt oms and Measures

erusaeMfosliateDmetIkcehCmotpmyS

None of the units operates

Check the power supply. Check to make sure that the rated voltage is supplied.

Check the indoor PCB. Check to make sure that the indoor PCB is broken.

Operation sometimes stops

Check the power supply.

A power failure of 2 to 10 cycles can stop air conditioner operation.

Equipment operates but does not cool, or does not heat (only for heat pump)

Check for faulty operation of the electronic expansion valve.

Set the units to cooling operation, and compare the temperatures of the liquid side connection pipes of the connection section among rooms to check the opening and closing operation of the electronic expansion valves of the individual units.

Diagnosis by service port pressure and operating current.

Check for insufficient gas.

Large operating noise and vibrations

Check the installation condition.

Check to make sure that the required spaces for installation (specified in the Technical Guide, etc.) are provided.

38

11.2 Parameter of primary electronic appliance

N O N a m e Pa ra m eter Picture

1 F a n m otor

R a te d vo ltag e :

DC310V

R a te d cu rr e nt:0 .17A

R a te d freq u en c y:

R e sis ta n ce :5 4 8Ω

-

Seivice diagnosis

Domestic air conditioner

11.4 Error Codes and Description indoor display

Code indication

fault description

Reference Page

Indoor displaying panel code indication

Outdoor (LED1 flash times)

Indoor and Outdoor

E7 15

Communication fault between indoor and outdoor units

Page .

Indoor Malfunction

E1 -- Room temperature sensor failure Page . E2 -- Heat-exchange sensor failure Page .

.egaProrreMORPEEroodnI--4E

E14 -- Indoor fan motor malfunction Page .

Outdoor Malfunction

F12 1 Outdoor EEPROM error Page . F1

2

.egaPMPIfonoitcetorpehT

F22

3

Overcurrent protection of AC electricity for the outdoor model

Page .

F3 4

Communication fault between the IPM and outdoor PCB

Page.

F19 6 Power voltage is too high or low Page .

F4 8

Overheat protection for Discharge temperature

Page .

F8 9 Outdoor DC fan motor fault F21 10 Defrost temperature sensor failure Page . F7 11 Suction temperature sensor failure Page . F6 12 Ambient temperature sensor failure Page .

F25 13 Discharge temperature sensor failure Page .

F11 18 deviate from the normal for the compressor Page .

F28 19 Loop of the station detect error Page .

F2 24 Overcurrent of the compressor Page .

F23 25

Overcurrent protection for single-phase of the compressor

Page .

E9

21 High work-intense protection

39

50

40 40 41 42 41

45

46

47

48

49

44

Page .

40 40 40

40

52

46

Page .53

Seivice diagnosis

Domestic air conditioner

11.4.1 Ther mistor or Related Abnormality

The temperatures detected by the thermistors are used to determine thermistor errors

when the thermistor input is more than 4.92V or less than 0.08V during compressor operation.

Note: The values vary slightly in some models

■ Faulty connector connection

■ Faulty thermistor

■ Faulty PCB

* Caution Be sure to turn off power switch before connect or disconnect connector, or else

parts damage may be occurred.

Thermistor resistance check method: Remove the connector of the thermistor on the PCB, and measure the resistance of thermistor using tester. The relationship between normal temperature and resistance is shown in the value of indoor thermistor.

Method of

malfunction tection

Malfunction

detection conditions

*Thermistor resistance check

Yes

Troubleshooting

E1: Room temperature sensor failure E2: Heat-exchange sensor failure LED1 flash 10 times：Defrost temperature sensor failure LED1 flash 11 times：Suction temperature sensor failure LED1 flash 12 times：Ambient temperature sensor failure LED1 flash 13 times：Discharge temperature sensor failure

Indoor display

Outdoor display

40

Thermistor resistance check

Is it normal?

YES

NO

YES

Is it normal?

NO

Check the connector onnection

Replace the thermistor

Replace the indoor unit PCB

Correct the connection

Seivice diagnosis

Domestic air conditioner

Indoor Display E4: indoor EEPROM error outdoor display F12: Outdoor EEPROM error; Outdoor LED1 flash 1 times

Method of

malfunction

detection

Malfunction

detection

conditions

Supposed

causes

Troubleshooting

The Data detected by the EEPROM are used to determine MCU

when the data of EEPROM is error or the EEPROM is damaged

■Faulty EEPROM data

■Faulty EEPROM

■Faulty PCB

* Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Replace the indoor or outdoor mainboard

41

11.4.2 EEPROM abnormal

Seivice diagnosis

Domestic air conditioner

11.4.3

Indoor fan motor malfunction

42

Indoor Display

E14

Method of

The rotation speed detected by the Hall IC during fan motor operation is used to determine

Malfunction

abnormal fan motor operation

Detection

Malfunction

when the detected rotation feedback singal don’t receiced in 2 minutes

Decision Conditions

Supposed

■ Operation halt due to breaking of wire inside the fan motor .

Causes

■ Fan motor overheat protection

■ Operation halt due to breaking of the fan motor lead wires

■ Detection error due to faulty indoor unit PCB

Troubleshooting

* Caution

Be sure to turn off power switch before connect or disconnect connector, or

else parts damage may be occurred.

How to check Fan Motor (DC)

1. Check connector connection.

2. Check motor power supply voltage output (pins 1-4).

3. Check motor control voltage (pins 4-5).

4. Check rotation command voltage output (pins 4-6).

5. Check rotation pulse input (pins 4-7).

Notes: the a/c is electrifying, don’t pull out or insert the terminals of the

motor, else the motor would be damaged.

Seivice diagnosis

Domestic air conditioner

43

YES

NO

YES

Is rotation number command pulse generated?

Is rotation number command voltage DC1～6V generated?

YES

NO

YES

Replace indoor unit PCB

Replace fan motor

Replace indoor unit PCB

Replace indoor fan motor

PCB

NO

Replace indoor unit PCB

Is motor control power voltage DC15V

g

enerated?

NO

Does fan rotate smoothly?

NO

Turn power ON and operate fan

Does it rotate?

YES

Turn off power supply and disconnect fan motor connector, then turn power ON

Check output of fan motor connector

Is motor powe r

voltage DC310V

g e n e r a t e d ?

Replace fan motor

Stop fan motor

Turn off power supply and rotate fan by hand

Seivice diagnosis

Domestic air conditioner

44

11.4.4 Outdoor DC fan motor fault

Check whether Terminal on the outdoor mainboard is well inserted.

Is it normal?

YES

NO

Reinsert the terminals

Electrify the machine again and turn

it on in the Cool state with the remote

controller. check whether motor can

run？

YES

Measure the voltage between 3 and 6 of

the terminal about 0-5v.

Is it normal?

NO

the motor of the outdoor unit is damaged

and needs replacing.

Measure the voltage between 1 and 3 of the terminal of

fan motor on the mainboard about DC310V,Measure

the voltage between 3 and 4 of the terminal about

DC15V. Measure the voltage between 5 and 3 of the

terminal about 1-6v.

NO

Is it normal?

The mainboard of the outdoor unit is

damaged and needs replacing.

NO

YES

Method of

m

alfunction detection

Malfunction detection

conditions

Troubleshooting

DC fan motor is detected by checking the fan running condition and so on

when the data of EEPROM is error or the EEPROM is damaged

■

DC fan motor protection dues to the DC fan motor faulty

■

DC fan motor protection dues to faulty PCB

Supposed causes

* Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage ma

y be occurred.

LED1 flash 9 timesOutdoor diplay

Seivice diagnosis

Domestic air conditioner

11.4.5 IPM protection

Electrify the machine again and turn it on

with the remote controller,If malfunctions

are reported before or upon the compresso

r

being started up,

IPM Module is damaged and

needs replacing.

1、The system may have been over or under charged with gas, which can be judged through the pressure of the

measuring system.

2、The shaft of compressor is seized and the compressor needs replacing.

YES

NO

The compressor is started normally, but

malfunctions are reported after it has run for some

time.

Malfunction unsolved

Method of

malfunction

detection

Malfunction

detection

conditions

Troubleshooting

IPM protection is detected by checking the compressor running condition and so on

■The system leads to IPM protection due to over current

■The compressor faulty leads to IPM protection

■circuit component of IPM is broken and led to IPM protection

■IPM protection dues to the compressor faulty

■IPM protection dues to faulty PCB of IPM module

■Com

p

ressor wiringdisconnected

Supposed

causes

* Caution

Be sure to turn off power switch before connect or disconnect connector, or else parts damage may be occurred.

.

LED1 flash 2 times

Outdoor diplay

45

Seivice diagnosis

Domestic air conditioner

11.4.6 Over-current of the compressor

Electrify the machine again and turn it on

with the remote controller, If malfunctions

are reported before or upon the compresso

r

being started up,

IPM Module is damaged and

needs replacing.

Repair the power supply

the system may have been over or under charged

with gas, which can be judged through the

pressure of the measuring system.

YES

NO

YES

NO

The compressor is started normally, but

malfunctions are reported after it has

run for some time. Check the powe

r

supply is too low or too high

NO

Method of

malfunction detection

Malfunction detection

conditions

Troubleshooting

he current of the compressor is too high

when the IPM Module is damaged or the compressor is damaged. power supply voltage is too low or too high

Supposed causes

LED1 flash 3 or 24 or 25 times

Outdoor diplay

■

Faulty IPM Module

■

Faulty compressor

■

Fault

y p

ower suppl

y

* Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred..

.

46

Seivice diagnosis

Domestic air conditioner

11.4.7 The communication fault between IPM and outdoor PCB

1) Check whether Terminal CN23 and CN24 on the outdoor mainboard

CN10 and CN11 on IPM module

2) Check whether the connected wire between IPM and outdoor

Are they good?

Electrify the machine again and turn it

on, Check whether the voltage between

1 and 2 of Terminal CN23 is about DC5V,

Check whether the voltage between2

and 3 of Terminal CN23 is about DC15V,

Replace the outdoor mainboard with a new one

Replace the outdoor IPM module

with a new one.

YES

NO

YES

Malfunction unsolved

1) Pull out and reinsert the terminals.

2) Replace connected wire

Method of

malfunction detection

Malfunction detection

conditions

Troubleshooting

Communication is detected by checking the IPM module and the outdoor PCB

■The outdoor PCB broken leads to communication fault

■The IPM module broken leads to communication fault

■The outdoor PCB is broken

■The IPM module is broken

■Communication wirin

g

disconnected

Supposed causes

* Caution

Be sure to turn off power switch before connect or disconnect connector, or else parts damage may be occurred

LED1 flash 4 times

Outdoor diplay

47

Seivice diagnosis

Domestic air conditioner

11.4.8 Power Supply Over or under voltage faul t

Electrify the machine again and turn it on with

the remote controller. Check whether the

compressor is started normall

y

Is it ok?

YES

Maybe there is some disturbance

NO

~230 is ok?

YES

This question may be caused by the power. Repair

the power supply.

NO

Change the IPM module

Test the outdoor power supply

(+310VDC) with a multimeter.

check whether the power

is >150 V or <390V?

Method of

malfunction detection

Malfunction detection

conditions

Troubleshooting

An abnormal voltage rise or fall is detected by checking the specified voltage detection

An voltage signal is fed from the voltage detection circuit to the microcomputer

■Supply voltage not as specified.

■The IPM module is broken.

■The outdoor PCB is broken.

Supposed causes

* Caution

Be sure to turn off power switch before connect or disconnect connector, or else parts damage may be occurred.

LED1 flash 6 times The power supply is over voltage

Outdoor diplay

48

Seivice diagnosis

Domestic air conditioner

11.4.9 Overheat Protection For Discharge Temperature

Electrify the machine again and turn it on with the remote controller,

then measure the temperature at the exhaust temperature sensor of

the compressor on the outdoor unit

the temperature exceeds

shortly after the

machine starts u

p

?

1) The cryogen may have been leaked during

installation, or there may be leakage in the piping

system.

2) There may be other causes to make the exhaust

temperature too high.

Malfunctions occur after running for some time even

though the measured temperature is below 230°. Pull

out the exhaust sensor and measure its resistance at

standard temperatures according to the

resistance-temperature table

the results deviate

much?

The sensor is damaged. Replace the sensor

with a new one.

The outdoor mainboard is damaged and needs be

re

p

laced

YES

NO

YES

Method of

malfunction detection

Malfunction detection

conditions

Troubleshooting

The Discharge temperature control is checked with the temperature being detected by the Discharge pipe thermistor

when the compressor discharge temperature is above 230°

■Electronic expansion valve defective

■Faulty thermistor

■Faulty PCB

Supposed causes

* Caution

Be sure to turn off power switch before connect or disconnect connector, or else parts damage may be occurred.

LED1 flash 8 times

Outdoor diplay

49

F

230°

F

Seivice diagnosis

Domestic air conditioner

11.4.10 The communication fault between indoor and outdoor

NO

（A）

YES

NO

YES

NO

YES

Restart the a/c and it

becomes normally.

If starting up normally, but

malfunction occurs again after a

while

Check whether the linking cable

between the indoor and outdoor is well

connected or whether its core wires are

well insulated.

The outdoor mainboard needs

dehumidification.

The outdoor mainboard needs

dedust.

1. Reconnect the linking cable;

2. Replace the linking cable with new

one.

Method of

malfunction detection

Malfunction detection

conditions

Troubleshooting

Communication is detected by checking the indoor PCB and the outdoor PCB

■The outdoor PCB broken leads to communication fault

■The indoor PCB broken leads to communication fault

■

Communication wiring disconnected

■The indoor PCB is broken

■The outdoor PCB is broken

■The module PCB is broken

Supposed causes

* Caution

Be sure to turn off power switch before connect or disconnect connector, or else parts damage may be occurred.

E7 LED1 flash 15 times

indoor diplay

Outdoor diplay

50

Seivice diagnosis

Domestic air conditioner

（A）

NO

YES

Check the indoor mainboard.

NO

If the voltage is of a constant

value of 0V DCto5V DC

YES

Measure the voltage between Jumpers 3 and

4 of IC1 on the indoor mainboard with a

multimeter.

NO

The outdoor mainboard is damaged;

Replace them with a new one.

Measure the AC voltage between positions 1

and 3 on the terminal of outdoor unit with a

multimeter.

If 230VAC is available but 310DC not,

the power module is damaged, replace it

with a new one.

Test the outdoor power supply (230VAC

and +310VDC) with a multimeter.

The outdoor mainboard is damaged; replace

it with a new one.

The indoor mainboard is damaged; replace

it with a new one.

If the value varies between 0 and 80 VAC, the

outdoor mainboard is damaged, replace it

with a new one.

If the value is constant at about 30V, the

indoor mainboard is damaged, replace it with

a new one.

If both 230VAC and 310DC are

available, measure +12V

(from7805) is available.

51

Circuit diagrams

Domestic air conditioner

11.4.11 Loss of synchronism detection

Inverter side current detection is abnormal

Within 3 minutes after the machine is

supplied with power and turned on with

the remote controller, check whethe

r

the compressor can start up

1. The wiring of compressor is incorrect

or the connection is poor;

2. The compressor is damaged

At first, the compressor start up ,soon the

compressor stopped with the LED1 on the

outdoor PCB blinks（1Hz）19/18 times

IPM Module is damaged and needs

replacing.

the Malfunctions exist also, the

compressor is damaged replace a

new one

YES

NO

YES

Malfunction unsolved

Maybe there is some disturbance

Method of

malfunction detection

Malfunction detection

conditions

Troubleshooting

The position of the compressor rotor can not detected normally

when the wiring of compressor is wrong or the connection is poor; or the compressor is damaged

■Faulty The wiring of compressor

■Faulty compressor

■Faulty PCB

Supposed causes

* Caution

Be sure to turn off power switch before connect or disconnect connector, or else parts damage may be occurred.

LED1 flash 18 times LED1 flash 19 times

Outdoor diplay

52

Circuit diagrams

Domestic air conditioner

11.4.12 High work-intense protection

Electrify the machine again and turn it on with the

remote controller, check whether the wind

temperature is below 149°F

The malfunction is reported

after the machine has run

for some time?

1 、 Check room temperature and

pipe temperature sensor.

2、the temperature monitoring circuit

of the indoor mainboard

The indoor unit blows poorly

due to blocked filters or poor

condition of the fan?

1) Clean the filters

2) Reinstall the fan.

Use some tools to measure the pressure of system，

YES

NO

YES

NO

Method of

malfunction detection

Malfunction detection

conditions

Troubleshooting

High work-intense control is activated in the heating mode if the temperature being sensed b

y

the heat exchanger thermistor exceeds the limit.

Activated when the temperature being sensed by the heat exchanger rises above

149°F twice in 30 minutes.

■Faulty electronic expansion valve

■Dirty heat exchanger

■Faulty heat-exchange sensor

■Insufficient gas

Supposed causes

* Caution

Be sure to turn off power switch before connect or disconnect connector, or else parts damage may be occurred.

LED1 flash 21 times

Outdoor diplay

53

Circuit diagrams

Domestic air conditioner

12. Circuit diagrams

54

+5V

SCL SDA

EEPROM

+5V

RESET

+5V

IR

SRCK

RCK

SER

COM3 COM2

GND

+5V

+12V

A B C D

+12V

BUZZER

+5V

SWITCH

+5V

SER

SRCK

GG

RCK

5V

GND

IR

ZJ/SS

DIGH DIGL

DISPLAY-0011800161

DISPLAY-0011800184/0033

12V

MODE

DIGH

DIGL

SER

SRCK

RCK

LSTEP_A LSTEP_B LSTEP_C LSTEP_D

BUZZ

CHECK/S_TIME

IR

SWITCH

LSTEP MOTOR

+5V

ONLINE

RST MODE

DIG_MODE

+5V

LED1

φ3-RED

+5V

P1

2SA1037AK

1B

1

2B

2

3B

3

4B

4

5B

5

6B

6

7B

7

E8COM

9

7C

10

6C

11

5C

12

4C

13

3C

14

2C

15

1C

16

IC8

ULN2003A

MODE

+5V

HXF

TVS1

HTVSB7.0CA-7V-600W

HXF

RST

XT1

FCR8.0MC5

+5V

+12V

FLZ

+12V

UP-DOWNSTEPMOTOR

1B

1

2B

2

3B

3

4B

4

5B

5

6B

6

7B

7

E

8

COM

9

7C

10

6C

11

5C

12

4C

13

3C

14

2C

15

1C

16

IC12

ULN2003A

USTEP_A

A B C D

12V

A B C D

12V

USTEP _B

USTEP _C

USTEP _D

DSTEP_A

DSTEP_B

DSTEP_C

DSTEP_D

+5V

RX

TX

GND

+5V

NETCOM

+5V

PG-FEEDBACK

+15V

VS

+15V

PG-OUT

IC7

TLP421

IC3 TLP421

+5V

FK

ROOM-CARD

N3

SS8050LT1

+12V

+5V

REMOTE_TX

REMOTE_RX

FAR

N1

SS8050LT1

N2

SS8050LT1

COMM_RX

COMM_TX

D15

RLS4148

D16

RLS4148

+5V

A/B

+5V

A/B

+5V

25/35

BM

+5V

PIPE

ROOM

PIPE

+12V

A B C D

12V

RSTEP MOTOR

1B

1

2B

2

3B

3

4B

4

5B

5

6B

6

7B

7

E8COM

9

7C

10

6C

11

5C

12

4C

13

3C

14

2C

15

1C

16

IC11

ULN2003A

+12V

HXF HXF1

FLZ1

1 2

J45

JX1

IR

1 2

J46

JX2

+5V

1 2 3 4

CN34

5267-04A

VREF

61

KI0/AN8/P10

49

AN7/P0050AN6/P01

51

AN5/P0252AN4/P0353AN3/P04

54

P6255P61

56

CLK1/AN2/P05

57

DA0/AN1/P06

58

VSS/AVS S

59

DA1/AN0/P07

60

VCC/AVCC

62

SSO/P 37

63

SSCK/SCL/P35

64

P33/SSI

1

P34/SDA/SCS

2

MODE

3

P43/XCIN

4

P44/XCOUT

5

RESET

6

P47/XOUT

7

VSS/AVSS

8

P46/XIN

9

VCC/AVCC

10

P54/TCIOD

11

P53/TCIOC

12

P52/TCIOB

13

P51/TCIOA/TCTRG

14

P50/TCCLK

15

P27/TDIOD1

16

(INT2)/P32

45

P15/RXD0/(TRIO)/(IN T1)26P14/TXD0

27

P8628P85/TFO1229P84/TFO11

30

P83/TFO10/TFI31P82/TFO02

32

TFO01/P81

33

TFO00/P80

34

TEO/P60

35

INT0/P45

36

TXD1/INT2/P66

37

RXD1/INT3/P67

38

(CLK1)/CLK2/P65

39

RXD2/P64

40

TXD2/P63

41

TBO/P31

42

TAO/P30

43

KI3/AN11/P13

46

KI2/AN10/P12

47

P26/TDIOC117P25/TDIOB118P24/TDIOA119P23/TDIOD0

20

P17/TAIO/INT1

24

P16/CLK0

25

KI1/AN9/P11

48

P20/TDIOA0/TDCLK

23

P21/TDIOB0

22

(INT1)/P36

44

P22/TDIOC0

21

IC2

R5F212A7SNFA

R3 2K

R11

2K

R10 10K

R23 10K

R63

10K

R54

10K

R85

10K

R94 10K

R29 10K

R30

10K

R33

560Ω

R102

10K

R103

20K

R37 10K

R8

10K

R96 10K

R7 2K

R69 2K

R104 2K

R42 10K

R109 10K

R86 1K

R49 1K

R70 1K R87 1K

R45 1K R44 1K R41 1K R46 1K

R24 1K R25 1K

R27

4.7K±1%

R28

4.7K±1%

R6

100Ω

R16

100Ω

R53

100Ω

R18

100Ω

R17

100Ω

R21

100Ω

R31 1K

R93 10K

R62

10K

R40 10K

R34 1K

R73

10K

R106 10K

R38

10K

R43 27Ω

R35

10K

R66

10K

R56

4.7K

R92

2K

R99

2K

R100

2K

R95

10K

R101

10K

R1 10K

R4

1K

R97 100Ω

R98 100Ω

R88 10K

R61

390Ω

R64 10K

R68

10K

R57

10K

R59

10K

R58

2.7K

R36 10K

R39

1K

R84

1K

R48

1K

R52

1K

R60

1K

R65

1K

R67

1K

R75

1K

R51

10K

R55

10K

R110

10K

R8910K

R2

10K

R5 1K

R81 1K

R72

1K

R76

1K

R79

1K

R105

1K

R47

1K

R9

1M

R82

220Ω

R50 2K

R71 10K

C1

100nF

C2

100nF

C3

10nF

C29

10nF

C5

100nF

C24

10nF

C14

1nF

C17 100nF

C10

100nF

C16 100nF

C15 100nF

C6

100nF

C11

100nF

C18 100nF

C20

100nF

C28

100nF

C33

100nF

C19

1nF

C12 100nF

C27

100nF

C21 10nF

C37

1nF

E1

100uF-16V

E3

4.7uF-50V

E5

4.7uF-50V

E2

100uF-16V

E14

4.7uF-50V-105

℃

E15

47uF-50V-105

℃

BUZZ1

PKM13EPY-4002

1

2

3

4

5

6

7

8

9

10

CN5

B10B-PH-K-S

1

2

3

4

CN6

B4B-XH-A

1 2 3 4 5 6 7 8

CN7

B8B-PH-K-S

1 2 3 4 5 6 7 8 9 10

CN7'

B10B-PH-K-S

1

2

3

4

5

6

7

CN9

B5P7-XH-A

1

2

3

4

5

CN10

B5B-XH-A

1

2

3

4

5

CN11

B5B-PH-K

1 2

CN14

B2B-XH-A-R

1

2

3

CN36

B3B-XH-A

1 2

CN51

B2B-XH-A

A0

1

A1

2

A2

3

GND4SDA

5

SCL

6

WP

7

VCC

8

IC1

24C04

1

2

JP1

TJC8-02(

立式

)

1

2

3

4

JP3

TJC8-04

1

2

3

4

JP4

TJC8

-04

（立式）

SW1 TSVC-1

1

2

3

4 5

6 7 8

SW2

NDI-04H

E11

100uF-25V

R108

1K

1

2

3

4

5

CN5-1

B5B-PH-K-S

1

2

3

4

5

CN5-2

B

5B-PH-K-S-

红色-立式

220V_L

N

COMM

IN-OUTCOM

220V_L

L1

LB2271(32mH-0.35A)

BLACK

L

~220VAC

N

WHITE

+5V

COMM_RX

COMM_TX

COMM_RX

220-L

220-N

N5

SS8050LT1

D11

1N4007

D12

1N4007

ZD4

1N4746A(18V-1W)

IC4

TLP851/PC851

IC6

TLP421

RED

WHITE

FLZ

+12V

220V_L

N

+12V

HXF

D14

RLS4148

D4 RLS4148

FLZ

HXF1

+15V

+310V

R206 270Ω-2W

R004

2.2K

R205

560Ω-0805

R203

100Ω-1206

R202

100Ω-1206

+12V

+15V

IC10

TLP421

R78 47K-2W

D206

FR106(1A-800V-500ns)

D6

1N5399

D8

1N5399

D7

1N5399

D9

1N5399

D20

FR

1

06

(

1A

-

8

0

V-

5

00

n

s)

D19

US1M( 1A-1000

V-75ns

）

D008

ER302(3A-200V-35ns)

ZD001

1

N

47

4

6A

(1

8

V

-1W

）

ZD202 1N4742A(12V-1W)

ZD003

1N4742A(12V-1W)

+5V

H-25*15HS1

R019

47Ω-1/2W

NTC1

SCK084R72

INPUT

1

G

N

D

2

OUTPUT

3

IC5

L

7805CV（1.5A-5V

）

15V -100mA

12V -900mA

R209

100Ω-1206

E7

1

00uF

-

45

0

V-105

℃

-

高频

C002

104-630VDC

C23

103-630VDC

C013

2.2nF-250VAC

C009

102-1000V

E204

1000uF-25V-105

℃

E207

47

0u

F

-

16V-

10

5

℃

CY1

2.2nF-250VAC

CY2

2.2nF-250VAC

E8

22u

F

-

5

0

V-105

℃

C004

1 0 p F-

1 K V

220-L

220-N

R161

1.5Ω-1/2W

S1B

R

2FB4

VC

C

5

NC

6

D/

S

T

7

D/

S

T

8

GN

D

3

IC9 A6059H

R77

1

0

Ω

-

1

20

6

R90

4.7K

R91

4.7K

R19 10K

R20

1K

R13 330Ω

R22 2K-1/4W

R26

2K-2W

R12

1

00

K

-

1/4W

R14

47K-3W

R15

47K-3W

C7 100nF

C22 100nF

C9 1nF

C8

100nF-50V

C4 100nF

C13 1nF

C010 1nF

CX1

470nF-275VAC

CX2

100nF-275VAC

CY4

2.2nF-250VAC

CY5

2.2nF-250VAC

CY3

2.2nF-250VAC

CY6

4.7nF-250V

E9

4

7

uF

-

50

V

-10

5

℃

E4

100uF-50V-105

℃

1

CN17

D250

1

CN23'

D250

1

CN23

1

CN21

1

CN52

1

CN21'

D250

1

CN27

1

CON1

1

CON2

1CON3

FUSE1

T3.15A/250VAC

3 4

1

2

K2

OJE-SS（H）-112L

（D）

3 4

1

2

K4

OJE-SS

（

H

）

-112L（D

）

N001 KTC8050

4

7

3

6

5

1

T1

BCK-6-FE1901H/ 19ES-X58

RV1

TVR14561*

R80

1.5K

Circuit diagrams

Domestic air conditioner

Sincere Forever

Haier Group

Haier Industrial Park, No.1, Haier Road

266101, Qingdao, China_

Http：//www.haier.com

Edited by :

Signed by :

Approved by:

Zou Na Liu xiang He shiquang

Wu Hongjin

SERVICE MANAUL

Wall Mounted Type

DC Inverter FREE MATCH N-Series

1U18FE2ERA HSU18VHGL-W

Model No.

This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product. Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or Repair the product or products dealt with in this service information by anyone else could result in serious injury or death

WARNING

2014 (Qingdao Haier Air Conditioner General corp. , Ltd)

Haier Group

Version：V1 Date：2014-05-25

Contents

Domestic air conditioner

Contents

1. Introduction ............................................................................................1

2. Specifications.........................................................................................7

3. Sensors list ............................................................................................8

4. Piping diagrams .....................................................................................9

5. Operation range....................................................................................10

6. Printed Circuit Board Connector Wiring Diagram .................................11

7. Functions and Control...........................................................................

8. Dimensional drawings...........................................................................

9. Conter of gravity ...................................................................................

10. Installations.........................................................................................

11. Service Diagnosis ...............................................................................

12. Performance and cerves diagrams.....................................................

13. Sound level .........................................................................................

14. Circuit diagrams..................................................................................

15

71

63

46

31

30

72

Introduction

Domestic air conditioner

1 Introduction

1.1 Model name explanation

1 U 1 8 F E 2 E AR

The maximum combination number

Type of outdoor unit : U (normal type)

Nominal cooling capacity (18000BTU/h)

Platform of outdoor units: F (F platform)

Europe

Version number

Heat pump & R410A refrigerant

DC inverter

Apply toT1; 208~230V60HZ/1ph

1



Introduction



Domestic air conditioner

1.2 Safety Cautions

Be sure to read the following safety cautions before conducting repair work.

The caution items are classified into “Warning” and “Caution”. The “Warning” items are especially important

since they can lead to death or serious injury if they are not followed closely. The “Caution” items can also

lead

to serious accidents under some conditions if they are not followed. Therefore, be sure to observe all the

safety

caution items described below.

About the pictograms △ This symbol indicates an item for which caution must be exercised.

The pictogram shows the item to which attention must be paid.

○ This symbol indicates a prohibited action.

The prohibited item or action is shown inside or near the symbol.

● This symbol indicates an action that must be taken, or an instruction.

The instruction is shown inside or near the symbol.

After the repair work is complete, be sure to conduct a test operation to ensure that the equipment operates

Normally, and explain the cautions for operating the product to the customer.

1.2.1 Caution in Repair

Warning

Be sure to disconnect the power cable plug from the plug socket before disassembling the equipment for

a repair.

Working on the equipment that is connected to a power supply can cause an electrical shook.

If it is necessary to supply power to the equipment to conduct the repair or inspecting the circuits, do not

touch any electrically charged sections of the equipment.

If the refrigerant gas discharges during the repair work, do not touch the discharging refrigerant gas .The

refrigerant gas can cause frostbite.

When disconnecting the suction or discharge pipe of the compressor at the welded section, release the

refrigerant gas completely at a well-ventilated place first.

If there is a gas remaining inside the compressor , the refrigerant gas or cooling machine oil discharges

when the pipe is disconnected, and it can cause injury.

If the refrigerant gas leaks during the repair work, ventilate the area. The refrigerant gas can generate

toxic gases when it contacts flames.

The step-up capacitor supplies high-voltage electricity to the electrical components of the outdoor unit.

Be sure to discharge the capacitor completely before conducting repair work . A charged capacitor can

cause an electrical shock.

Do not start or stop the air conditioner operation by plugging or unplugging the power cable plug.

Plugging or unplugging the power cable plug to operate the equipment can cause an electrical shock or

fire.

2



Introduction



Domestic air conditioner

Warning

Do not repair the electrical components with wet hands . Working on the equipment with wet hands can

cause an electrical shock

Do not clean the air conditioner by splashing water. Washing the unit with water can cause an electrical

shock.

Be sure to provide the grounding when repairing the equipment in a humid or wet place, to avoid

electrical

shock.

Be sure to turn off the power switch and unplug the power cable when cleaning the equipment. The

internal fan rotates at a high speed, and cause injury.

Do not tilt the unit when removing it. The water inside the unit can spill and wet the furniture and floor.

Be sure to check that the cooling cycle section has cooled down sufficiently before conducting repair

work. Working on the unit when the cooling cycle section is hot can cause burns.

Use the welder in a well-ventilated place. Using the welder in an enclosed room can cause oxygen

deficiency.

1.2.2 Cautions Regarding Products after Repair

Warning

Be sure to use parts listed in the service parts list of the applicable model and appropriate tools to

conduct repair work. Never attempt to modify the equipment. The use of inappropriate parts or tools can

cause an electrical shock, excessive heat generation or fire.

When relocating the equipment, make sure that the new installation site has sufficient strength to

withstand the weight of the equipment.

If the installation site does not have sufficient strength and if the installation work is not conducted

securely, the equipment can fall and cause injury.

Be sure to install the product correctly by using the provided standard installation frame.

Incorrect use of the installation frame and improper installation can cause the equipment to fall, resulting

in injury.

For

integral

units only

Be sure to install the product securely in the installation frame mounted on a window frame.

If the unit is not securely mounted, it can fall and cause injury.

For

integral

units only

3



Introduction



Domestic air conditioner

Warning

Be sure to use an exclusive power circuit for the equipment, and follow the technical standards related to

the electrical equipment, the internal wiring regulations and the instruction manual for installation when

conducting electrical work.

Insufficient power circuit capacity and improper electrical work can cause an electrical shock or fire.

Be sure to use the specified cable to connect between the indoor and outdoor units. Make the

connections securely and route the cable properly so that there is no force pulling the cable at the

connection terminals.

Improper connections can cause excessive heat generation or fire.

When connecting the cable between the indoor and outdoor units, make sure that the terminal cover

does

not lift off or dismount because of the cable.

If the cover is not mounted properly, the terminal connection section can cause an electrical shock,

excessive heat generation or fire.

Do not damage or modify the power cable.

Damaged or modified power cable can cause an electrical shock or fire. Placing heavy items on the

power cable, and heating or pulling the power cable can damage the cable.

Do not mix air or gas other than the specified refrigerant (R-410A / R22) in the refrigerant system.

If air enters the cooling system, an excessively high pressure results, causing equipment damage

and injury.

If the refrigerant gas leaks, be sure to locate the leak and repair it before charging the refrigerant. After

charging refrigerant, make sure that there is no refrigerant leak.

If the leak cannot be located and the repair work must be stopped, be sure to perform pump-down and

close the service valve, to prevent the refrigerant gas from leaking into the room. The refrigerant gas

itself

is harmless, but it can generate toxic gases when it contacts flames, such as fan and other heaters,

stoves and ranges.

.

When replacing the coin battery in the remote controller, be sure to disposed of the old battery to prevent

children from swallowing it.

If a child swallows the coin battery, see a doctor immediately.

Caution

Installation of a leakage breaker is necessary in some cases depending on the conditions of the

installation site, to prevent electrical shocks.

4



Introduction



Domestic air conditioner

Do not install the equipment in a place where there is a possibility of combustible gas leaks.

If a combustible gas leaks and remains around the unit, it can cause a fire.

Be sure to install the packing and seal on the installation frame properly. If the packing and seal are not

installed properly, water can enter the room and wet the furniture and floor.

1.2.3 Inspection after Repair

Warning

Check to make sure that the power cable plug is not dirty or loose, then insert the plug into a power outlet

all the way.

If the plug has dust or loose connection, it can cause an electrical shock or fire.

If the power cable and lead wires have scratches or deteriorated, be sure to replace them.

Damaged cable and wires can cause an electrical shock, excessive heat generation or fire.

Warning

Do not use a joined power cable or extension cable, or share the same power outlet with other electrical

appliances since it can cause an electrical shock, excessive heat generation or fire.

Caution

Check to see if the parts and wires are mounted and connected properly, and if the connections at the

soldered or crimped terminals are secure. Improper installation and connections can cause excessive

heat generation, fire or an electrical shock.

If the installation platform or frame has corroded, replace it. Corroded installation platform or frame can

cause the unit to fall, resulting in injury.

5



Introduction



Domestic air conditioner

Check the grounding, and repair it if the equipment is not properly grounded. Improper grounding can

cause an electrical shock.

Be sure to measure the insulation resistance after the repair, and make sure that the resistance is 1 M

ohm or higher.

Faulty insulation can cause an electrical shock.

Be sure to check the drainage of the indoor unit after the repair.

Faulty drainage can cause the water to enter the room and wet the furniture and floor.

1.2.4 Using Icons

Icons are used to attract the attention of the reader to specific information. The meaning of each icon is described in

the table below:

1.2.5 Using Icons List

Icon Type of Information Description

Note

A “note” provides information that is not indispensable, but may

nevertheless be valuable to the reader, such as tips and tricks.

Caution

A “caution” is used when there is danger that the reader, through

incorrect manipulation, may damage equipment, loose data, get

an

unexpected result or has to restart (part of) a procedure.

Warning

A “warning” is used when there is danger of personal injury.

Reference

A “reference” guides the reader to other places in this binder or in

this manual, where he/she will find additional information on a

specific topic.

6

Specification

Domestic air conditioner

2 Specifications

NOMINAL DISTRIBUTION SYSTEM VOLTAGE

1/esahP

60HZ

032VegatloV

NOMINAL CAPACITY and NOMINAL INPUT gnitaehgnilooc

Capacity rated

Btu/h

Power Consumption(Rated) Btu

38

Btu/BtuPOC/REE

Annual energy consumption Btuh

h/³inlavomeRerutsioM

TECHNICAL SPECIFICATIONS-UNIT Dimensions H*W*D in 2.66×0.94×2.56 Packaged Dimensions

H*W*D in 3.11×1.33x2.44

94.6lb/thgieW

94.6lb/thgiewssorG

Sound level

46BderusseepdnuoS

BdrewopdnuoS

ELECTRICAL SPECIFICATIONS gnitaehgnilooc

46.665.6AtnerrucgninnurlanimoN

Maximum running current A 9.8 10.2

0.80.8AtnerrucgnitratS

TECHNICAL SPECIFICATIONS-PARTS gnitaehgnilooc

Compressor

rosserpmoCyratoRepyT

ledoM

3072WtuptuorotoM

Oil type

11.0galemulovegrahcliO

Fan

naflaixAepyT

137WtuptuorotoM

77682h/³in)hgih(etarwolfriA

mpr)wol/hgih(deepS Heat exchanger

Type

ML fin-φ7HI-HX tube

4.1*30*1hctif*egats*woR

7

17000(4780-13300) 18000(5120-13990)

50685222

999950 6252250

SNB130FGYMC-L1

FV50S

950/300

Frequency

38

/

70.62*10 ³

-

Specification

Domestic air conditioner

TECHNICAL SPECIFICATIONS-OTHERS

Refrigerant circuit

Refrigerant type R410a Refrigerant charge lb 2.86 Maximum allowable distance between indoor an outdoor

in 82

Maximum allowable level difference in 49.2 Refrigerant control Capillary

Piping connections (external diameter)

liquid in Φ0.02 gas in Φ0.04 drain in Φ0.05

Heat insulation type Both liquid and Gas pipes Max. piping Length in 82 Max. Level Difference in 49.2 Chargeless in 32.8 Amount of Additional Charge of Refrigerant g/in 65.6

Note: the data are based on the conditions shown in the table below

htgnelgnipiPgnitaehgnilooc

16.4in

3．Sensors list

type Description Qty

Ambient sensor Its used for detecti 1edisroodtuofoerutarepmetgn

Suction sensor

Its used for detecting suction pipe temperature of compressor to adjust gas flowing

1

Defrosting sensor Its used for controlling outdoor defrosting at heating mode 1

1taeh-revofoesacnirosserpmocrofdesustIrosnesgnigrahcseD

Conversation formulae Kcal/h= KW×860 Btu/h= KW×3414 cfm=m³/min×35.3

8

International Protection degree

IP 24

Indoor: 80.6°FDB/66.2°FW B

Outdoor: 95°

F

DB/75.2°FWB

Indoor: 68°

F

D B

Ou t do o r : 44.6°

F

D B / 42.8°F WB



Pinping diagrams



Domestic air conditioner

4．Pinping diagrams



9

Operation range

Domestic air conditioner

5．Operation range

10

F

68

86

104

122

64.4

109.4

114.8

50

68

86

60.8 73.4 89.6

50

68

86

14

19.4

23

32

41

50

59

68

77

75.2

°F

16.4in in

Wiring diagrams

Domestic air conditioner

6. Printed Circuit Board Connector Wiring Diagram

Connectors

PCB(1) (Control PCB)

PCB(2) (module PCB)

Note: Other Designations

PCB(1) (Control PCB)

1) FUSE 1, (25A,250VAC) FUSE 2(1A,250VAC)

2)LED 1 keep light representative normal ,if keep flash interval representative trouble Alarm

3)RV1,RV2,RV3 Varistor

11

daolhtiwtcennoCrotcennocBCPseires

1 CN1

Connector for power N and L

2 CN2 3 CN3

Connector for ground

16 CN24

5

CN23

6

CN9

7

CN10

8

CN22

10 CN17

Connector for thermistors

11 CN18 12

CN19

13 CN20

15 CN47

4 CN8

17 CN14 18

CN28

19

CN25

Connector to P and N of the module board

daolhtiwtcennoCrotcennocBCPseires

1

P (CN8)

Connector for capacitance board

2 N (CN9) 3

LO (CN4)

Connector for reactor

4 LI (CN3)

7 CN5

Connector for the U, V, W wire of the compressor

8

CN6

9 CN7

10

CN10

11

CN11

Connector for fan motor

Connector for communicate between the control board and the module board

Connector for DC POWER 15Vand 5V to the module board

Connector for CN9,CN8 on the module board

Connector for communicate between indoor and outdoor unit

9

CN11

CN11 Connector for four way valve coil

CN21

14

Connector for the DC power 5V and 15V form the control PCB

Connector for communicate between the control board and the module board

AC_L(CN1)

AC_N(CN2)

Connector for control board

6

5

Connector Wiring Diagram

Domestic Air Conditioner

12

PCB(1)

CN36

CN17

CN28

CN23

CN18

CN16

CN9

CN8

CN10

CN3

CN11

CN15

CN24

CN25

CN19

CN20

CN21

CN1

CN2

CN47

CN49

CN45

CN11

Connector Wiring Diagram

Domestic Air Conditioner

13

PCB(2)

CN8

CN5

CN6

CN7

CN9

CN4

CN3

CN10

CN11

CN1

CN2

Functions and control

Domestic air conditioner

Wiring diagrams

14

AC-N OUT

CN9

CN10

AC-L OUT

CN11

4-WAY VALVE

M

CN22

CN15白

VALVE A

CN43

AC FAN

M

AC FAN

CN8

PE

POWER

W

Y/G

CN36

COMB

COMA

N

R

CN1

CN2

AC-N

AC-L

FUSE1

T25A 250VAC

CN24

CN23

MODULE COM

MODULE POWER

TO IN DOO R U NIT

CN3

CN10

B

BL

OR

CN5

CN1

CN4

CN8

CN9

CN2

CN11

CN6

CN7

REACTOR

B

R(U)

S(V)

C(W)

B

W

R

DC FAN

OUTDOOR PCB

MOUDLE PCB

ELECTRIC

EXPANSION

Y/G

W

B

Y/G

1(N)

2(L)

3(C)

W

BL

U

V

W

P N

AC-LLIAC-N L0

CN25

N

P

CN28

2(N)

1(L)

W

B

CAP

M

VALVE

MOTOR

CAP

COMPRESSOR

CN7

CN6

AC-N OUT

AC-L OUT

W

B

A

CG-A

XG-A

PIPING

CN21

CN17

TC

TEMP.SENSOR

COMP.

DEFROST

TEMP.SENSOR

CS

CN18

AMBIENT

TEMP.SENSOR

HW

CN19

SUCTION

TEMP.SENSOR

QX

CN47

TEMP.SENSOR

~

Functions and control

Domestic air conditioner

7. Functions and Control

7.1 Main functions and control specification

7.1.1 The operation frequency of outdoor unit and its control

7.1.1.1 The operation frequency control of compressor

The operation frequency scope of compressor：

Mode Minimun operation frequency Maximun operation frequency

zH 09 zH63 gnitaeH zH 08 zH63 noitaregirfeR

7.1.1.2 The starting of compressor

When the compressor is started for the first time, it must be kept under the conditions of 58Hz,88Hz for one minute (the overheating protection of the outdoor unit air-blowing temperature, immediately decrease the frequency when the compressor is overflowing and releasing the pressure)， then it can be operated towards the target frequency. When the machine runs normally, there’s no such process. After starting the compressor for operation, the compressor should run according to the calculated frequency, and every determined frequency for protection should be prior to the calculated frequency.

7.1.1.3 The speeds of increasing or decreasing the frequency of the compressor

The speed of increasing or decreasing the frequency rapidly 1 -----------1HZ/second The speed of increasing or decreasing the frequency slowly 2 -----------1HZ/10seconds

7.1.1.4 The calculation of the compressor’s frequency

1）The minimum/maximum frequency limitation A．While cooling: F-MAX-r is the maximum operation frequency of the compressor; F-MIN-r is the minimum operation frequency of the compressor. B．While heating: F-MAX-d is the maximum operation frequency of the compressor; F-MIN-d is the minimum operation frequency of the compressor. 2）The frequency limitation which is affected by the environment temperature.

(Wh_c= environment temperature)

Heating mode:

Serial No. Temperature scope Frequency

limitation 1 Wh_F<10.4 Max_hz8 90HZ 2 Wh_F<17.6 Max_hz7 90HZ 3 Wh_F<28.4 Max_hz4 90HZ 4 Wh_F<41 Max_hz5 85HZ 5 Wh_F<50 Max_hz1 80HZ 6 Wh_F<62.6 Max_hz2 70HZ 7 Wh_F<68 Max_hz6 55HZ 8

Wh_F≧68

Max_hz3 45HZ Remarks: The above are the maximum frequency limitations of the complete appliance which are affected by the environment, and they have nothing to do with the ability of the indoor unit.

15

Functions and control

Domestic air conditioner

Cooling/dehumidification mode:

Serial No. Temperature scope Frequency limitation

1 Wh_F<82.4 Max_hz1 46HZ 2 Wh_F<89.6 Max_hz2 72HZ 3 Wh_F<104 Max_hz3 80HZ 4 Wh_F<118.4 Max_hz4 65HZ 5

Wh_F≧118.4

Max_hz5 46HZ

Remarks: the above are not only the maximum frequency limitations of the complete appliance which are affected by the environment, but also the maximum ability limitation of the system. When the starting ability is not the maximum, its maximum frequency limitation is calculated by the following equations:

The frequency limitation which is affected by the temperature and under the condition of actual ability＝the actual running system ability*the maximum frequency which is limited by the temperature and under the condition of maximum ability/the maximum designing ability of the system

ΔT=∑（ΔTi*Pi）/∑Pi (ΔTi=|Tst_i the setting temperature - Tnh_i the indoor environment temperature|; Pi＝i the ability of the indoor unit)

Cooling/dehumidification mode:

Heating mode：

K=∑(Ki*Pi)/∑Pi

The calculation of the actual output frequency: when there is no healthy airflow: F= F-ED-*(rated frequency)×P×K When the healthy airflow has been set: F =F-ED-*×P×K（airflow speed）×K（healthy airflow） Notes:

When cooling, it is needed to satisfy F-MIN-d(compressor’s Min_hz)< F<F-MAX-d(compressor’s Max_hz)

When heating, it is needed to satisfy

F-MIN-r (compressor’s Min_hz)< F<F-MAX-r (compressor’s Max_hz)

ΔT

<1

＝1 ＝2 ＝3

>=4

The percentage of the

rated frequency P

50% 80% 120% 150% 160%

ΔT

<1

＝1 ＝2 ＝3

>=4

The percentage of the

rated frequency P

50% 70% 120% 150% 170%

The indoor setting

airflow speed

Breeze Low Medium High Strong Quiet

Healthy

airflow

The percentage of the

rated frequency Ki

60％

75% 85% 100% 120% 60% 60%

16

Functions and control

Domestic air conditioner

7.1.2 The outdoor fan control (Exchange fan)

When the fan is changed among every airflow speed (including stop blowing), in order to avoid the airflow speed from skipping frequently, it must be kept under each mode for over 30 seconds, and then it can be changed to another mode (when cooling, the time is changed to 15 seconds).

7.1.2.1 The outdoor fan control when cooling or dehumidifying

After the compressor is started for 5 seconds, the outdoor fan is started at the medium speed at first, after 30 seconds, it begins to control the airflow speed according to the temperature conditions of the outdoor environment.

7.1.2.2 The outdoor fan control when heating

The temperature of the outdoor air (Ta) Airflow speed

Ta≥71.6°F

Low

66.2°F ≤Ta<71.6°F

Keeping the speed

60.8°F≤Ta<71.6°F

Medium

57.2°F ≤Ta<60.8°F

Keeping the speed

Ta< 57.2°F

High

7.1.3 Four way control

For the details of defrosting four-way valve control, see the defrosting process.

Four way working in other ways:

Under the mode of heating, open the four-way valve, when the compressor is not started or changed to non-heating mode, make sure the compressor is stoped for 2 minutes, and then close the four-way valve.

7.1.4 Protection function

7.1.4.1 TTC high temperature-preventing protection

Once the machine is started, it can run TTC(air-blowing temp) overheating protection of air-blowing, but air-blowing sensor malfunction must alarm after 4 minutes during which the compressor is started (during the course of self-detection, there’s no such limitation)

Sensor detection methods: 100 times (one cycle of procedure run is one time, and about 5ms, detection method for each time: continuously sampling for 8 times, then order them and take the mean value of the middle 2 values), take the mean value.

The temperature of the

outdoor air（Ta）

The temperature of the outdoor

coil（Te）

Airflow speed

Ta≥86°F

hgiH ——

78.8°F≤Ta<86°F

—— Keeping the speed

75.2°F ≤Ta<78.8°F

muideM ——

73.4°F ≤Ta<75.2°F

—— Keeping the speed

50°F≤Ta<73.4°F

woL ——

41°F≤Ta<50°F

—— Keeping the speed

Ta<41°F 59°F ≤Te

Low

59°F>Te

Stop

17

Functions and control

1 8

Domestic air conditioner

TTC（°F） Abnormal stop 230 Decreasing the frequency rapidly（1HZ/second）

215.6 Decreasing the frequency slowly (1HZ/10seconds)

208.4 The frequency doesn’t change.

199.4 Increasing the frequency (1HZ/10second) 194 Increasing the frequency（1HZ/1second） TTC>=230°F lasts for 20 seconds. Overheating protection of air-blowing, alarm malfunction to the indoor, others

don’t last.

7.1.4.2 TC high temperature-preventing control of the indoor heating unit：

Tpg_indoor is the highest value of the effective indoor unit (start it and it is in accord with the running state). TC=indoor coil temp.

The indoor heat exchanger sensor tests the temperature of the indoor heat exchanger. If the temperature is higher than 131°F, decrease the rotate speed of the compressor and do the high temperature-preventing protection of the indoor heat exchanger; if the temperature of the indoor heat exchanger is lower than 116.6°F, recover to the normal control.

TC(°F) The compressor stops Fgh_t1 149°F Fgh_t1－2 Fgh_t2－2 N Decreasing the frequency rapidly Fgh_t2 138.2°F P Decreasing the frequency slowly Fgh_t3 131°

F Fgh_t3－2 Fgh_t4—2 Q Prohibiting increasing the frequency Fgh_t4 123.8°F R Increasing slowly Fgh_t5 116.6°F Fgh_t5—2

Normal N：Decreasing at the speed of 1HZ/1 second P：Decreasing at the speed of 1Hz/10 seconds Q：Continue to keep the last-time instruction cycle R：Increasing at the speed of 1Hz/10seconds Remarks: the outdoor unit

7.1.4.3 The control of preventing the over current of the compressor:

During the starting process of the compressor, if the current of the compressor is greater than 11A for 3 seconds, stop the compressor and alarm, after 3 minutes, start it again, if such state appears 3 times in 20 minutes, stop the compressor and

alarm, and confirm the malfunction. Then continue to run it only after the power is off. During the starting process of the compressor, if the AC current is greater than 8.5A, the frequency of the compressor decreases at the speed of 1HZ/second. During the starting process of the compressor, if the AC current is greater than 8A, the frequency of the compressor decreases at the speed of 0.1HZ/second.

Functions and control

Domestic air conditioner

During the starting process of the compressor, if the AC current is greater than 7A, the frequency of the compressor increases at the prohibited speed. During the starting process of the compressor, if the AC current is greater than 6.5A, the frequency of the compressor increases at the speed of no faster than 0.1HZ/second.

7.1.4.4 The protection function of AC current:

During the starting process of the compressor, if the AC current is greater than 12A for 3 seconds, stop the compressor and alarm, after 3 minutes, start it again, if such state appears 3 times in 20 minutes, stop the compressor and alarm, and confirm the malfunction. Then continue to run it only after the the power is off. During the starting process of the compressor, if the AC current is greater than 9A, the frequency of the compressor decreases at the speed of 1HZ/second. During the starting process of the compressor, if the AC current is greater than 8A, the frequency of the compressor decreases at the speed of 0.1HZ/second. During the starting process of the compressor, if the AC current is greater than 7A, the frequency of the compressor increases at the prohibited speed. During the starting process of the co

mpressor, if the AC current is greater than 6.5A, the frequency of the compressor increases at the speed of no faster than 0.1HZ/second. Remarks: when the outdoor temperature is high, there’s compensation for AC current protection. (1) When the outdoor environment temperature is higher than 104°F, AC current protection value decreases by 1A. (2) When the outdoor environment temperature is higher than122°F, AC current protection value decreases by 2.5A.

7.1.4.5 Anti-freezing protection of the indoor heat exchanger

When cooling/heating, prevent freezing. Tpg_indoor is the minimum value of the effective indoor unit (start it and it is in accord with the running state).

51.8°F //ice_temp_3+5

ice_temp_3+3 48.2°F

Increasing slowly

46.4°F //ice_temp_3+2 Keeping the frequency

ice_temp_3 44.6°F 44.6°F

ice_temp_2 41°F Decreasing slowly

ice_temp_1 °F Decreasing rapidly ice_temp_1

32°F Stop

When Tpg_indoor〈 ice_temp_33.8°F, the frequency of the compressor decreases at the speed of 1HZ/1second. When Tpg_indoor〈 ice_temp_35.6°F , the frequency of the compressor decreases at the speed of 1HZ/10seconds. When Tpg_indoor begins to rise again, and ice_temp_2≤Tpg_indoor≤ ice_temp_37.4°F, the frequency of the compressor doesn’t change.

19

37.4

Functions and control

Domestic air conditioner

When ice_temp_3〈Tpg_indoor〈ice_temp_3+37.4°F , the frequency of the compressor increases at the speed of 1HZ/10seconds. For example, Tpg_indoor≤32°F last for 2 minutes, and then the outdoor unit will stop, and report underload malfunction, but don’t send malfunction report to the indoor. The compressor stops for more than 3 minutes, Tpg_indoor> ice_temp_3+35.6°F, the compressor recovers.

7.1.4.6 The frequency limitation of modification rate

In the field which is controlled by high frequency, if the modification rate is not high enough, the control-driven chip will enter into weak magnetic control, this will help to relieve the problem of modification rate. If during the course of weak magnetic control, the modification rate is still not high enough, enter into the control of decreasing frequency until the alarm of modification rate is relieved.

7.1.4.7 Temperature protection of the outdoor cooling coil

When the defrosting temperature and the sensor’s temperature are higher than 149°F , the frequency of the compressor decreases 1hz/10seconds. Keep the frequency until it decreases to the lowest frequency. When the temperatures are lower than 149°F and higher than 140°F , keep the frequency of the compressor. When the temperatures are lower than 140°F , relieve the defrosting temperature protection.

7.1.5 The control of the outdoor Electronic expansion valve (EEV)

(09K series have no this function) In cooling mode, the EEV opening range is 90~480 steps. The EEV opening is 5 steps when unit is off. In heating mode, the EEV opening range is 60~480 steps. The EEV opening is 45 steps when unit is off. After outdoor unit is off, the EEV opening keep the current on for 5 s, then open the EEV completely for 2 minutes, then become 5 steps (cooling) or 45 steps (heating).

The EEV opening will increase if SH (superheat degree) >0 while decrease if SH<0. Adjust frequency: If |SH|=0, 60s/ 1 step If |SH|≥3,and △SH=0, 10s/ 1 step. If 3≥|SH|≥0, 30s/ 1 step. △SH= current SH- last SH SH= Ts (suction temp)-Tc1 (indoor coil temp)-Tsh (fixed data, depend on different models, -1~2)

20

Functions and control

Domestic air conditioner

7.2 Value of Thermistor

Ambient Sensor, Defrosting Sensor, Pipe sensor

R77°F=10KΩ±3% B77°F/122°F=3700K±3%

21

Temp.(( °F ))

Max.(K

) Normal(K ) Min.(K )

Tolerance(

°

F

)

-22 165.2170 147.9497 132.3678 28.51 35.15

-20.2 155.5754 139.5600 125.0806 28.53 35.13

-18.4 146.5609 131.7022 118.2434 28.56 35.11

-16.6 138.1285 124.3392 111.8256 28.60 35.08

-14.8 130.2371 117.4366 105.7989 28.63 35.06

-13 122.8484 110.9627 100.1367 28.67 35.04

-11.2 115.9272 104.8882 94.8149 28.71 35.01

-9.4 109.4410 99.1858 89.8106 28.74 34.99

-7.6 103.3598 93.8305 85.1031 28.76 34.95

-5.8 97.6556 88.7989 80.6728 28.80 34.93

-4 92.3028 84.0695 76.5017 28.83 34.92

-2.2 87.2775 79.6222 72.5729 28.87 34.88

-0.4 82.5577 75.4384 68.8710 28.90 34.86

-1.4 78.1230 71.5010 65.3815 28.94 34.83

-3.2 73.9543 67.7939 62.0907 28.98 34.79

-5 70.0342 64.3023 58.9863 29.01 34.77

-6.8 66.3463 61.0123 56.0565 29.05 34.74

-8.6 62.8755 57.9110 53.2905 29.08 34.72

-10.4 59.6076 54.9866 50.6781 29.12 34.68

-12.2 56.5296 52.2278 48.2099 29.16 34.65

-14 53.6294 49.6244 45.8771 29.19 34.63

15.8 50.8956 47.1666 43.6714 29.23 34.59

17.6 48.3178 44.8454 41.5851 29.28 34.56

19.4 45.8860 42.6525 39.6112 29.32 34.52

21.2 43.5912 40.5800 37.7429 29.35 34.50

23 41.4249 38.6207 35.9739 29.39 34.47

24.8 39.3792 36.7676 34.2983 29.43 34.43

26.6 37.4465 35.0144 32.7108 29.46 34.39

28.4 35.6202 33.3552 31.2062 29.52 34.36

30.2 33.8936 31.7844 29.7796 29.55 34.32

32 32.2608 30.2968 28.4267 29.59 34.30

33.8 30.7162 28.8875 27.1431 29.62 34.27

Functions and Control

Domestic air conditioner

35.6 29.2545 27.5519 25.9250 29.68 34.23

37.4 27.8708 26.2858 24.7686 29.71 34.20

39.2 26.5605 25.0851 23.6704 29.75 34.16

41 25.3193 23.9462 22.6273 29.79 34.12

42.8 24.1432 22.8656 21.6361 29.84 34.09

44.6 23.0284 21.8398 20.6939 29.88 34.05

46.4 21.9714 20.8659 19.7982 29.93 34.02

48.2 20.9688 19.9409 18.9463 29.97 33.96

50 20.0176 19.0621 18.1358 30.00 33.93

51.8 19.1149 18.2270 17.3646 30.06 33.89

53.6 18.2580 17.4331 16.6305 30.09 33.85

55.4 17.4442 16.6782 15.9315 30.15 33.82

57.2 16.6711 15.9601 15.2657 30.18 33.78

59 15.9366 15.2770 14.6315 30.24 33.73

60.8 15.2385 14.6268 14.0271 30.27 33.69

62.6 14.5748 14.0079 13.4510 30.33 33.66

64.4 13.9436 13.4185 12.9017 30.36 33.62

66.2 13.3431 12.8572 12.3778 30.42 33.57

68 12.7718 12.3223 11.8780 30.45 33.53

69.8 12.2280 11.8126 11.4011 30.51 33.49

71.6 11.7102 11.3267 10.9459 30.54 33.44

73.4 11.2172 10.8634 10.5114 30.60 33.40

75.2 10.7475 10.4216 10.0964 30.65 33.35

77 10.3000 10.0000 9.7000 30.65 33.35

78.8 9.8975 9.5974 9.2980 30.63 33.37

80.6 9.5129 9.2132 8.9148 30.56 33.34

82.4 9.1454 8.8465 8.5496 30.49 33.49

84.2 8.7942 8.4964 8.2013 30.43 33.55

86 8.4583 8.1621 7.8691 30.36 33.62

87.8 8.1371 7.8428 7.5522 30.29 33.67

89.6 7.8299 7.5377 7.2498 30.24 33.75

91.4 7.5359 7.2461 6.9611 30.16 33.80

93.2 7.2546 6.9673 6.6854 30.09 33.87

95 6.9852 6.7008 6.4222 30.02 33.93

96.8 6.7273 6.4459 6.1707 29.97 34.00

98.6 6.4803 6.2021 5.9304 29.89 34.05

100.4 6.2437 5.9687 5.7007 29.82 34.12

102.2 6.0170 5.7454 5.4812 29.75 34.20

104 5.7997 5.5316 5.2712 29.68 34.25

105.8 5.5914 5.3269 5.0704 29.61 34.32

107.6 5.3916 5.1308 4.8783 29.53 34.39

109.4 5.2001 4.9430 4.6944 29.46 34.45

111.2 5.0163 4.7630 4.5185 29.39 34.52

22

Functions and Control

Domestic air conditioner

113 4.8400 4.5905 4.3500 29.32 34.59

114.8 4.6708 4.4252 4.1887 29.25 34.65

116.6 4.5083 4.2666 4.0342 29.17 34.72

118.4 4.3524 4.1145 3.8862 29.10 34.79

120.2 4.2026 3.9686 3.7443 29.03 34.86

122 4.0588 3.8287 3.6084 28.94 34.92

123.8 3.9206 3.6943 3.4780 28.87 34.99

125.6 3.7878 3.5654 3.3531 28.80 35.06

127.4 3.6601 3.4416 3.2332 28.72 35.13

129.2 3.5374 3.3227 3.1183 28.63 35.20

131 3.4195 3.2085 3.0079 28.56 35.28

132.8 3.3060 3.0989 2.9021 28.49 35.33

134.6 3.1969 2.9935 2.8005 28.40 35.40

136.4 3.0919 2.8922 2.7029 28.33 35.47

138.2 2.9909 2.7948 2.6092 28.26 35.55

140 2.8936 2.7012 2.5193 28.17 35.62

141.8 2.8000 2.6112 2.4328 28.09 35.69

143.6 2.7099 2.5246 2.3498 28.00 35.76

145.4 2.6232 2.4413 2.2700 27.93 35.83

147.2 2.5396 2.3611 2.1932 27.84 35.91

149 2.4591 2.2840 2.1195 27.75 35.98

150.8 2.3815 2.2098 2.0486 27.68 36.05

152.6 2.3068 2.1383 1.9803 27.59 36.12

154.4 2.2347 2.0695 1.9147 27.52 36.21

156.2 2.1652 2.0032 1.8516 27.43 36.28

158 2.0983 1.9393 1.7908 27.34 36.36

159.8 2.0337 1.8778 1.7324 27.27 36.43

161.6 1.9714 1.8186 1.6761 27.18 36.50

163.4 1.9113 1.7614 1.6219 27.09 36.57

165.2 1.8533 1.7064 1.5697 27.00 36.64

167 1.7974 1.6533 1.5194 26.91 36.73

168.8 1.7434 1.6021 1.4710 26.82 36.81

170.6 1.6913 1.5528 1.4243 26.74 36.88

172.4 1.6409 1.5051 1.3794 26.65 36.95

174.2 1.5923 1.4592 1.3360 26.56 37.04

176 1.5454 1.4149 1.2942 26.47 37.11

177.8 1.5000 1.3721 1.2540 26.38 37.18

179.6 1.4562 1.3308 1.2151 26.29 37.27

181.4 1.4139 1.2910 1.1776 26.20 37.35

183.2 1.3730 1.2525 1.1415 26.11 37.42

185 1.3335 1.2153 1.1066 26.02 37.51

186.8 1.2953 1.1794 1.0730 25.92 37.58

188.6 1.2583 1.1448 1.0405 25.83 37.67

23

Functions and Control

Domestic air conditioner

190.4 1.2226 1.1113 1.0092 25.74 37.74

192.2 1.1880 1.0789 0.9789 25.65 37.83

194 1.1546 1.0476 0.9497 25.56 37.90

195.8 1.1223 1.0174 0.9215 25.45 37.99

197.6 1.0910 0.9882 0.8942 25.36 38.07

199.4 1.0607 0.9599 0.8679 25.27 38.16

201.2 1.0314 0.9326 0.8424 25.16 38.23

203 1.0030 0.9061 0.8179 25.07 38.32

204.8 0.9756 0.8806 0.7941 24.98 38.39

206.6 0.9490 0.8558 0.7711 24.87 38.48

208.4 0.9232 0.8319 0.7489 24.78 38.55

210.2 0.8983 0.8088 0.7275 24.67 38.64

212 0.8741 0.7863 0.7067 24.58 38.73

213.8 0.8507 0.7646 0.6867 24.48 38.80

215.6 0.8281 0.7436 0.6672 24.39 38.89

217.4 0.8061 0.7233 0.6484 24.28 38.98

219.2 0.7848 0.7036 0.6303 24.19 39.06

221 0.7641 0.6845 0.6127 24.08 39.15

222.8 0.7441 0.6661 0.5957 23.97 39.24

224.6 0.7247 0.6482 0.5792 23.88 39.33

226.4 0.7059 0.6308 0.5632 23.77 39.42

228.2 0.6877 0.6140 0.5478 23.67 39.49

230 0.6700 0.5977 0.5328 23.56 39.58

231.8 0.6528 0.5820 0.5183 23.47 39.67

233.6 0.6361 0.5667 0.5043 23.36 39.76

235.4 0.6200 0.5518 0.4907 23.25 39.85

237.2 0.6043 0.5374 0.4775 23.14 39.94

239 0.5891 0.5235 0.4648 23.04 40.01

240.8 0.5743 0.5100 0.4524 22.93 40.10

242.6 0.5600 0.4968 0.4404 22.82 40.19

244.4 0.5460 0.4841 0.4288 22.71 40.28

246.2 0.5325 0.4717 0.4175 22.60 40.37

248 0.5194 0.4597 0.4066 22.50 40.46

24

Functions and control

Domestic air conditioner

Discharging Sensor

R176 F°=50KΩ±3%

B77/176°F=4450K±3%

Temp.(( °F))

Max.(KΩ) Normal(KΩ) Min.(KΩ)

Tolerance( )

-22 14646.0505 12061.7438 9924.4999 26.67 36.41

-20.2 13654.1707 11267.8730 9290.2526 26.69 36.39

-18.4 12735.8378 10531.3695 8700.6388 26.73 36.39

-16.6 11885.1336 9847.7240 8152.2338 26.74 36.37

-14.8 11096.6531 9212.8101 7641.8972 26.76 36.36

-13 10365.4565 8622.8491 7166.7474 26.78 36.36

-11.2 9687.0270 8074.3787 6724.1389 26.82 36.34

-9.4 9057.2314 7564.2244 6311.6413 26.83 36.34

-7.6 8472.2852 7089.4741 5927.0206 26.85 36.32

-5.8 7928.7217 6647.4547 5568.2222 26.89 36.30

-4 7423.3626 6235.7109 5233.3554 26.90 36.30

-2.2 6953.2930 5851.9864 4920.6791 26.92 36.28

-0.4 6515.8375 5494.2064 4628.5894 26.96 36.27

-1.4 6108.5393 5160.4621 4355.6078 26.98 36.27

-3.2 5729.1413 4848.9963 4100.3708 27.01 36.25

-5 5375.5683 4558.1906 3861.6201 27.03 36.23

-6.8 5045.9114 4286.5535 3638.1938 27.05 36.21

-8.6 4738.4141 4032.7098 3429.0191 27.09 36.21

-10.4 4451.4586 3795.3910 3233.1039 27.10 36.19

-12.2 4183.5548 3573.4260 3049.5312 27.14 36.18

-14 3933.3289 3365.7336 2877.4527 27.16 36.16

15.8 3699.5139 3171.3148 2716.0828 27.19 36.14

17.6 3480.9407 2989.2460 2564.6945 27.21 36.12

19.4 3276.5302 2818.6731 2422.6139 27.25 36.10

21.2 3085.2854 2658.8058 2289.2164 27.27 36.10

23 2906.2851 2508.9126 2163.9230 27.30 36.09

24.8 2738.6777 2368.3158 2046.1961 27.32 36.06

26.6 2581.6752 2236.3876 1935.5371 27.36 36.05

28.4 2434.5487 2112.5459 1831.4826 27.39 36.03

30.2 2296.6230 1996.2509 1733.6024 27.41 36.01

32 2167.2730 1887.0018 1641.4966 27.45 36.00

33.8 2045.9191 1784.3336 1554.7931 27.46 35.98

35.6 1932.0242 1687.8144 1473.1460 27.50 35.96

37.4 1825.0899 1597.0431 1396.2333 27.54 35.94

39.2 1724.6540 1511.6468 1323.7551 27.55 35.91

41 1630.2870 1431.2787 1255.4324 27.59 35.89

42.8 1541.5904 1355.6163 1191.0048 27.63 35.87

44.6 1458.1938 1284.3593 1130.2298 27.66 35.85

46.4 1379.7528 1217.2282 1072.8813 27.68 35.83

48.2 1305.9472 1153.9626 1018.7481 27.72 35.82

25

°F

Functions and control

Domestic air conditioner

50 1236.4792 1094.3200 967.6334 27.75 35.80

51.8 1171.0715 1038.0743 919.3533 27.77 35.76

53.6 1109.4661 985.0146 873.7359 27.81 35.74

55.4 1051.4226 934.9440 830.6210 27.84 35.73

57.2 996.7169 887.6792 789.8583 27.88 35.71

59 945.1404 843.0486 751.3077 27.91 35.67

60.8 896.4981 800.8922 714.8380 27.93 35.65

62.6 850.6086 761.0603 680.3265 27.97 35.64

64.4 807.3024 723.4134 647.6580 28.00 35.60

66.2 766.4212 687.8205 616.7252 28.04 35.58

68 727.8172 654.1596 587.4271 28.08 35.56

69.8 691.3524 622.3161 559.6694 28.11 35.53

71.6 656.8979 592.1831 533.3634 28.15 35.51

73.4 624.3328 563.6604 508.4261 28.18 35.47

75.2 593.5446 536.6540 484.7796 28.22 35.46

77 564.4275 511.0760 462.3510 28.24 35.42

78.8 536.9865 486.9352 441.1516 28.27 35.40

80.6 511.0105 464.0500 421.0258 28.31 35.37

82.4 486.4151 442.3499 401.9146 28.35 35.35

84.2 463.1208 421.7683 383.7626 28.38 35.31

86 441.0535 402.2430 366.5175 28.42 35.29

87.8 420.1431 383.7151 350.1301 28.45 35.26

89.6 400.3242 366.1295 334.5542 28.49 35.24

91.4 381.5350 349.4341 319.7460 28.53 35.20

93.2 363.7176 333.5801 305.6645 28.58 35.17

95 346.8176 318.5216 292.2709 28.62 35.15

96.8 330.7839 304.2151 279.5286 28.65 35.11

98.6 315.5682 290.6199 267.4031 28.69 35.08

100.4 301.1254 277.6976 255.8620 28.72 35.06

102.2 287.4128 265.4119 244.8745 28.76 35.02

104 274.3905 253.7288 234.4118 28.80 34.99

105.8 262.0206 242.6161 224.4465 28.83 34.95

107.6 250.2676 232.0436 214.9529 28.87 34.93

109.4 239.0983 221.9825 205.9065 28.92 34.90

111.2 228.4809 212.4060 197.2844 28.96 34.86

113 218.3860 203.2887 189.0648 28.99 34.83

114.8 208.7855 194.6066 181.2273 29.03 34.79

116.6 199.6531 186.3369 173.7524 29.07 34.77

118.4 190.9639 178.4584 166.6217 29.12 34.74

120.2 182.6945 170.9508 159.8181 29.16 34.70

122 174.8228 163.7951 153.3249 29.19 34.66

123.8 167.3280 156.9733 147.1268 29.25 34.63

125.6 160.1904 150.4683 141.2090 29.28 34.59

127.4 153.3914 144.2641 135.5577 29.32 34.56

129.2 146.9136 138.3454 130.1598 29.35 34.52

26

Functions and control

Domestic air conditioner

131 140.7403 132.6980 125.0027 29.41 34.48

132.8 134.8559 127.3081 120.0746 29.44 34.45

134.6 129.2457 122.1630 115.3645 29.48 34.41

136.4 123.8956 117.2504 110.8618 29.53 34.38

138.2 118.7926 112.5589 106.5564 29.57 34.34

140 113.9241 108.0776 102.4388 29.62 34.30

141.8 109.2784 103.7961 98.5000 29.66 34.27

143.6 104.8443 99.7046 94.7315 29.70 34.21

145.4 100.6112 95.7939 91.1253 29.75 34.18

147.2 96.5692 92.0553 87.6735 29.79 34.14

149 92.7088 88.4805 84.3690 29.84 34.12

150.8 89.0211 85.0614 81.2048 29.88 34.07

152.6 85.4976 81.7908 78.1744 29.93 34.02

154.4 82.1303 78.6615 75.2715 29.97 33.98

156.2 78.9116 75.6668 72.4902 30.02 33.94

158 75.8343 72.8004 69.8249 30.06 33.91

159.8 72.8916 70.0561 67.2703 30.11 33.85

161.6 70.0770 67.4283 64.8213 30.15 33.82

163.4 67.3844 64.9115 62.4731 30.20 33.78

165.2 64.8080 62.5006 60.2211 30.24 33.73

167 62.3423 60.1906 58.0609 30.29 33.69

168.8 59.9821 57.9770 55.9885 30.34 33.66

170.6 57.7223 55.8552 53.9998 30.38 33.60

172.4 55.5583 53.8210 52.0912 30.43 33.57

174.2 53.4856 51.8706 50.2591 30.47 33.51

176 51.5000 50.0000 48.5000 30.47 33.51

177.8 49.7063 48.2057 46.7083 30.47 33.53

179.6 47.9835 46.4842 44.9911 30.40 33.60

181.4 46.3286 44.8323 43.3452 30.33 33.62

183.2 44.7385 43.2468 41.7672 30.27 33.71

185 43.2105 41.7248 40.2540 30.20 33.78

186.8 41.7386 40.2604 38.7996 30.15 33.84

188.6 40.3241 38.8545 37.4048 30.07 33.91

190.4 38.9643 37.5045 36.0668 30.00 33.96

192.2 37.6569 36.2078 34.7831 29.95 34.03

194 36.3996 34.9622 33.5513 29.88 34.09

195.8 35.1903 33.7653 32.3689 29.80 34.14

197.6 34.0269 32.6151 31.2338 29.73 34.21

199.4 32.9075 31.5096 30.1438 29.66 34.29

201.2 31.8302 30.4467 29.0970 29.61 34.34

203 30.7933 29.4246 28.0915 29.53 34.41

204.8 29.7950 28.4417 27.1254 29.46 34.47

206.6 28.8337 27.4961 26.1970 29.39 34.54

208.4 27.9078 26.5864 25.3048 29.32 34.59

210.2 27.0160 25.7110 24.4470 29.25 34.66

27

Functions and control

Domestic air conditioner

212 26.1569 24.8685 23.6222 29.17 34.74

213.8 25.3290 24.0574 22.8291 29.10 34.79

215.6 24.5311 23.2765 22.0662 29.03 34.86

217.4 23.7620 22.5245 21.3323 28.96 34.93

219.2 23.0205 21.8002 20.6261 28.89 34.99

221 22.3055 21.1025 19.9465 28.81 35.06

222.8 21.6159 20.4303 19.2924 28.74 35.13

224.6 20.9508 19.7825 18.6626 28.67 35.19

226.4 20.3091 19.1582 18.0563 28.60 35.26

228.2 19.6899 18.5564 17.4723 28.53 35.33

230 19.0924 17.9761 16.9098 28.44 35.40

231.8 18.5157 17.4166 16.3680 28.36 35.47

233.6 17.9590 16.8769 15.8458 28.29 35.53

235.4 17.4214 16.3564 15.3427 28.22 35.60

237.2 16.9023 15.8542 14.8577 28.13 35.67

239 16.4010 15.3696 14.3902 28.06 35.74

240.8 15.9167 14.9020 13.9394 27.99 35.82

242.6 15.4489 14.4506 13.5047 27.91 35.89

244.4 14.9968 14.0149 13.0855 27.82 35.94

246.2 14.5599 13.5942 12.6811 27.75 36.01

248 14.1376 13.1879 12.2909 27.66 36.09

249.8 13.7294 12.7955 11.9144 27.59 36.16

251.6 13.3347 12.4165 11.5510 27.50 36.23

253.4 12.9531 12.0503 11.2003 27.43 36.30

255.2 12.5840 11.6965 10.8617 27.36 36.37

257 12.2270 11.3545 10.5348 27.27 36.45

258.8 11.8817 11.0240 10.2191 27.18 36.52

260.6 11.5475 10.7046 9.9142 27.10 36.59

262.4 11.2242 10.3957 9.6197 27.01 36.66

264.2 10.9112 10.0970 9.3352 26.94 36.73

266 10.6084 9.8082 9.0602 26.85 36.81

267.8 10.3151 9.5288 8.7945 26.76 36.88

269.6 10.0312 9.2586 8.5378 26.69 36.95

271.4 9.7563 8.9971 8.2895 26.60 37.04

273.2 9.4901 8.7441 8.0495 26.51 37.11

275 9.2322 8.4993 7.8175 26.44 37.18

276.8 8.9824 8.2623 7.5931 26.35 37.26

278.6 8.7404 8.0329 7.3760 26.26 37.33

280.4 8.5059 7.8108 7.1660 26.17 37.40

282.2 8.2787 7.5958 6.9629 26.08 37.47

284 8.0584 7.3875 6.7664 26.01 37.56

28

Dimensinal drawings

Domestic air conditioner

8.Dimensional drawings

9.Center of gravity

29

2.66

2.85

2.56

0.94

2.66

12.7

3/4

2.66

0.94

2.26

0.24

0.18

0.22

0.84

1.00

0.39

Drawing for the installation of indoor and outdoor units

Necessary Tools for Installation

●

Torque wrench

●

(0.67 in,0.87in ,1.02in)

Nipper

●

Reamer●

Hacksaw●

Pipe cutter●

Gas leakage detector or● soap-and-water solution

Hole core drill●

Flaring tool●

Spanner(0.67,0.75 and 1.02in )●

Knife● Measuring tape●

●

Selection of Installation Place

Power Source

Preparation

The above picture is for reference only. Your product may look different.

Read this manual before installation Explain the operation of the unit to the user according to this manual

Installation Manual of Room Air Conditioner

F

A

C

E

D

Optional parts for piping

Non-adhesive tape Adhesive tape Saddle (L.S) with screws Connecting electric cable

for indoor and outdoor

Drain hose Insulating material

Piping hole cover

Floor ﬁxing dimensions of the outdoor unit

Fixing of outdoor unit

Fix the unit to concrete or block●

with bolts

(10mm) securely.

When ﬁtting the unit to wall

●

surface, roof or

rooftop, ﬁx the unit securely in consideration of

earthquake and strong wind.

If vibration may affect the

●

house, ﬁx the unit

by attaching a

vibration-proof mat.

The marks from to

in the ﬁgure are the

name of the parts. The distance between the indoor unit and the ﬂoor should be more than 2m or 6 feet.

The models adopt HFC free refrigerant R410A

more than 10cm

more than 5cm

more than

more than10cm

more than 15cm

more than 60cm

A

G

●

A

F

C

E

D

G

B

Arrangement of piping directions

Rear left

Left

Rear right

Right

Below

G

Attention must be paid to

the pitch of drain hose

X Y X

Z

Dimensions(inches)

Model

x y z

Hammer

●

Place where the distance of more than lm from televisions, radios, wireless apparatuses and ﬂuorescent lamps 3 feet or approximately.

●

In the case of ﬁxing the remote controller on a wall, place where the indoor unit can receive signals when the ﬂuorescent

●

lamps in the room are in use.

●

A distance marked

●



is available as illustrated in the below ﬁgure.

Indoor Unit - Select a location that is

Outdoor Unit - Select a location that is

Robust not causing vibration, where the unit can be supported s ufﬁciently. Not affected by heat or steam generated in the vicinity, and where the inlet and outlet of the unit are not disturbed. Possible to drain easily, and where piping can be connected with the outdoor unit.

Where conditioned air can be spread in a room evenly.

Less affected by rain or direct sunlight and is sufﬁciently ventilated. Strong enough to bear the unit, where vibration and noise are not increased.

Not causing a nuisance to neighbors due to discharged air or noise.

(Unit: inch)

5 1/2

19 2/3

10 1/16

（2 inches）

(4 inches)

（4 inches）

more than10cm

（4 inches）

（5 7/8 inches）

（24 inches）

All wiring to the unit must be in accordance with the National Electric code and local ordinances.

HSU12VHGL-W

System configuration

Domestic air conditioner

30

10cm

Indoor unit

Make a hole of B mm / inches

in diameter, slightly descending

to outside the wall.

●

Install piping hole cover and seal it off with putty after installation

●

When the mounting plate is ﬁrst ﬁxed

1. Carry out, based on the wall studs or lintels, a

to be ﬁxed against the wall, then temporarily fasten the plate with one nail.

2. Ensure

the proper level of the plate, by

hanging a thread with a

weight from the central top of the plate, then fasten the plate.

3. Find the wall hole location A using a measuring tape

1

Fitting of the Mounting Plate and

Positioning of the wall Hole

Lid for right piping

Lid for under piping pipe

Fix with adhesive tape

Lid for left piping

Indoor/outdoor electric cable and drain hose must be bound with refrigerant

●

piping with adhesive.

[ Other direction piping ]

Cut away, with a nipper, the lid for piping according to the piping direction and

●

then bend the pipe according to theposition of wall hole. When bending, be

careful not to crush

pipes.

Make sure that the wires connecting the indoor and outdoor units are not covered by the refrigeration piping insulation and are long enough to connect to the terminal block on the indoor unit.

●

proper leveling for the plate

2

Making a Hole on the Wall and Fitting the Piping Hole Cover

Drawing of pipe

3

Installation of the Indoor Unit

[ Rear piping ]

Draw pipes and the drain hose, then fasten them with the adhesive tape

●

[ Left·Left-rear piping ]

In case of left side piping, cut away, with a nipper, the lid for left piping.

●

In case of left-rear piping, bend the pipes according to the piping direction to

●

the mark of hole for left-rear piping which is marked on insulation materials.

1. Insert the drain hose into the carity of heat insulation materials of indoor unit.

2. Insert the indoor/outdoor electric cable from backside of indoor

unit, and pull it

out o

n the front side, then connect them.

3. Coat the ﬂaring seal face with refrigerant oil and connect pipes.

Cover the tubing connection with insulation materials closely, and with adhesive tape.

Fixing the indoor unit body

Hang the unit body onto the upper notches of the

●

mounting plate. Move the body from side to side to verify

its

secure ﬁxing.

In order to ﬁx the body onto the mounting plate,hold up

●

the body from the underside and then put it down perpendicularly.

mounting plate

When you unload the indoor unit,please use

lift the bottom of the body outward slightly and lift the unit until it leaves the mounting plate.

agraffe

mounting plate

Unloading of indoor unit body

●

your hand to raise the body , then

Remote controller (1)

AAA dry battery (2)

Mounting plate (1)

Drain hose (1)

Ø4X25 Screw

(4)

Plastic cap (4)

Drain-elbow (1)

Cushion (4)

Pipe supporting plate (1)

Accessory parts

NOTE：The thickness of the pipe must be 0.8mm(1/16”) at least.

Selection of pipe

Insulation material

Drain hose

Piping

Pipe supporting plate

Indoor/outdoor electric c able

Indoor side

Outdoor side

ØBmm

Wall hole

Thickness of wall

(Section of wall hole)

Piping hole pipe

G

Model Liquid pipe (Ø)

Gas pipe (Ø)

6.35mm (1/4")

12.7mm (1/2")

09k/12k : B= 60mm(2 3/8 inches) 18k/24k : B=70mm(2 3/4 inches)

Pitch downward for drainage

Pay attention to the following points before installation of machine:

1. Take out cushion blocks on the left and right angle beads as shown in the following Figure.

2. Remove 2 gaskets under the cross-flow fan.

3. Clean the burr on the surface of fracture to avoid the power wire from being scratched after removing the virtual opening of the outgoing line slot on the case by hands in indoor power-on process.

HSU18VHGL-W

A=145mm

B= 60mm

30mm

A=145mm

B= 60mm

30mm

A=125mm

B= 70mm

30mm

Domestic air conditioner

31

Installation

Outdoor unit

Indoor unit

A

B

Outdoor unit

Indoor unit

A

B

A

B

Outdoor unit

Indoor unit

Oil trap

Outdoor unit

Install according to the instructions on the 1st page of this manual

When bending the interconnect tubing, ensure the radius is at least 1 1/4" to 1 3/4", 30mm to 40mm to ensure against crushing the tubing.

●

Connecting the pipe of gas side ﬁrst makes working easier.

●

Ensure the interconnecting tubing is approved for R410A.●

Installation of Outdoor Unit

Half union

Flare nut

Torque wrench

CAUTION

Spanner

Forced fastening without careful centering may damage the threads and cause a leakage of gas.

1

Connection of pipes

2

1. If the supply cord is damaged, it must be replaced by the manufacturer or its

service agent or a similar qualiﬁed person. The type of connecting wire is

H05RN-F

or H07RN-F.

2. If the fuse on PC board is broken please change it with the

type of

3. The wiring method should be in line with the local wiring standard.

4. Use an HVACR circuit breaker or time delay fuse.

T.3.15A/250VAC (Indoor), T.25A/250VAC (Outdoor).

4

Connecting the indoor/outdoor Electric Cable

Removing the wiring cover

Remove terminal cover at right bottom corner of indoor unit, then take off● wiring cover by removing its screws.

1. Insert the cable from the outside into the unit through the same hole that has the interconnecting tubing.

2. Pull out the cable on the front side, and connect the cable

making a loop.

Note

When connecting the cable, conﬁrm the terminal number of indoor and outdoor units carefully. If wiring is not correct, the unit will not operate

When connecting the cable after installing the indoor unit

When connecting the cable before installing the indoor unit

{

Indoor unit

Outdoor unit

1

2

N

2

) (

3

(C)

L

1

) (

•

Max.Elevation: Amax = 32.8ft / 10m (09k / 12k) = 50ft / 15m (18k / 24k)

•

In case the elevation A is more than 16.4ft / 5m, oil trap shoud be installed every 5~7m(16.4ft-23ft)

•

Max. Length: Bmax = 50ft / 15m (09k / 12k) = 83.3ft / 25m (18k / 24k)

●

Insert the cord from the back side of the unit, then pull it out on the front side. Fasten the unit wire harness to the conduit holder using the lock nut. Position the conduit holder to its original state using screw.

Power cable:

3wire with ground 14AWG

Power Wiring

4wire 14AWG

Control Wiring

Pipe Diameter(ǿ) Fastening torque

Liquid side6.35mm(1/4") 18N.m/13.3Ft.lbs

Liquid/Gas side9.52mm(3/8") 42 N.m/30.1Ft.lbs

Gas side 12.7mm(1/2") 55N.m/40.6Ft.lbs

Gas side 15.88mm(5/8") 60 N.m/44.3Ft.lbs

properly and could cause a defect.

Ensure that no dirt or debris enters the tubing. The standard tubing length is 25 ft/7.5M. If a different length is required, adjust the refrigerant amount by 1/2 oz/ft, 50 g/M for the 9k, 12k and 18k models. For the 24k model, adjust by 1/2 oz/ft, 50 g/M.Before opening the service valves, evacuate the interconnecting tubing and indoor unit. Follow the instruction in section 5 on page 4.

Pipe cutting is carried out with a pipe cutter and burs must

●

be removed.

After inserting the ﬂare nut, ﬂaring work is carried out.

●

Cutting and Flaring Work of Piping

Flare tool for R410A Conventional ﬂare tool

Clutch-type clutch-type(Rigid-type) Wing-nut type (Imperial-type)

A

0~0.5mm

1.0~1.5mm

1.5~2.0mm

0~1/51 inch

3/76 ~1/17 inch

1/17 ~1/8 inch

Flare tooling die

1.Cut pipe

2.Remove burs

3.Insert the ﬂare nut

4.Flare pipe

Lean

Damage of ﬂare Partial Too outside

Correct Incorrect

Crack

HSU18VHGL-W

(4G0.75mm )

Installation

Domestic air conditioner

32

Detach the service port’s cap of

1.

3-way valve, and the valve cap for 2-way valve

and 3-way valve. Connect the service port to the low side of the gauge manifold

Open the handle on the low side of the gauge manifold and operate vacuum pump.

2.

Vacuum the tubing for at least 15 minutes. The vacuum level on the low side gauge should be 29.9 in of Hg, 76 cm of Hg, 0.1 MPa. when vacuuming is complete, close the valve on the manifold and turn off the vacuum pump. The vacuum level should hold for 1-2 minutes. If the vacuum level does not hold, check the flared connections and repeat this step.

3.

Purging Method:To use vacuum pump

5

Open

Open the 2-way valve 1/4 turn. After 5-6 seconds, close the valve and inspect for leaks with a leak detector or soap solution.

4.

No gas leakage? Go to step 6.

5.

Detach the charge hose6.

from the service port,

open 2-way valve and 3-way

Gauge manifold

Gaugemanifold(for

R410A)

2-way valve Liquid Side

3-way valve Gas Side

Vacuum pump

Tube(for R410A)

Close

2-way valve

3-way valve

Open 90

O

2-way valve 3-way valve

2-way valve

3-way valve

2-way valve

3-way valve

Valve cap

Service port cap

After attaching the caps, check for leakage around the caps.

7.

8.

Step 1.

Step 2.

Step 3.

Step 7.

Step 6.

Step 4.

The power source must be exclusively used for air

●

conditioner.

In the case of installing an air conditioner in a moist place,

●

please install an ea-

For installation in other places, use an HVACR circuit breaker of time delay fuse.

●

If the refrigerant of the air conditioner leaks, it is necessary to discharge all the

●

according to the amount marked on the name plate.

Please do not let other cooling medium, except speciﬁed one (R410A), or air

●

enter into the cooling circulation system. This could cause high pressure and

1

Power Source Installation

CAUTION

rth leakage breaker.(GFCI)

2

On Drainage

It becomes

high midway.

The gap with the

ground is too small.

There is the bad

smell from a ditch

It waves.

The end is immersed in water.

Please install the drain hose and ensure downward flow. Please don’t do the drainage as shown below.

●

Please pour water in the drain pan of the indoor unit, and

●

is proper.

In case that the attached drain hose is in a room, please

●

apply insulation

to

Less than

5cm

conﬁrm that drainage

to the hose to prevent condensation.

Check Items for Test Run

Please kindly explain to our customers how to operate

through the instruction manual.

Check for Installation and Test Run

■

1

1+2=

kg

R410A

2

kg

2=

1=

B

C

D

F E

kg

A

This product contains fluorinated greenhouse gases covered by the Kyoto Protocol. Do not vent into the atmosphere. Refrigerant type:R410A GWP* value:1975 GWP=global warming potential Please fill in with indelible ink,

• 1 the factory refrigerant charge of the product

• 2 the additional refrigerant amount charged in the field and

• 1+2 the total refrigerant charge

on the refrigerant charge label supplied with the product. The filled out label must be adhered in the proximity of the product charging port (e.g. onto the inside of the stop value cover). A contains fluorinated greenhouse gases covered by the Kyoto Protocol B factory refrigerant charge of the product: see unit name plate C additional refrigerant amount charged in the field D total refrigerant charge E outdoor unit F refrigerant cylinder and manifold for charging

Contains fluorinated greenhouse gases covered by the Kyoto Protocol

Refrigerant charge label■

Put check mark

in boxes

To prevent the gas

leakage,

continues, remove the refrigerant used for the leakage check and flare tubes again. Repeat vacuum and leak and if no leakage, proceed to step 6.

replace the service port and valve caps.

Gas leak from interconnecting tubing?

Installation is on the interconnecting tubing? Are the connecting wirings of indoor and outdoor ﬁrmly

Is the connecting wiring of indoor and outdoor ﬁrmly ﬁxed? Is drainage securely carried out? Is the ground wire securely connected? Is the indoor unit securely ﬁxed? Is power source voltage the local codes? Is there any noise? Are the lights near the unit working normally? Are cooling and heating (when in heat pump) performing

normally?

Is the operation of room temperature control normal?

inserted to the terminal block?

Loosen the screws on

●

terminal block and

insert the wires fully into terminal

block, then tighten the screws.

If wiring is not correct, the unit will not operate properly and it could cause a

●

Fix the cable with a clamp.●

Connection

3

If the drain-elbow is used,● please attach as shown in figure.

(Note:

Only for heat pump unit.)

Attaching Drain-Elbow

4

defect in the unit.

and connect the vacuum pump to the center port of the manifold.

In case of a leak, try tightening the flare connections to fix the leak. If the leak stops, go to step 6. If the leak continues, check the flare connections and repair as needed, then go back to step 3. then proceed step 6. If leak

valve completely.

refrigerant. Repair the leak, vacuum the unit then charge the liquid refrigerant into air conditioner

could cause a leak and lead to personal injuries.

Installation

Domestic air conditioner

33

Connector Wiring Diagram

Domestic Air Conditioner

11.Service Diagnosis

11.1 Caution for Diagnosis

The operation lamp flashes when any of the following errors is detected.

1.When a protection device of the indoor or outdoor unit is activated or when the thermistor malfunctions, disabling equipment operation.

2.When a signal transmission error occurs between the indoor and outdoor units.In either case, conduct the diagnostic procedure described in the following pages.

34

11.2 Parameter of primary electronic appliance

N O Na m e Pa ra m e te r Pictu r e

1 C o m pres sor

R ate d vo lta g e:2 20- 2 30 V

R ate d cu rr e nt:8 .4 A

R ate d freq ue n c y :5 0/60 H z

R esista n ce :0 .9 3Ω

2 Fa n m oto r

R ate d vo lta g e:2 20- 2 30 V

R ate d cu rr e nt:0 .2 A

R ate d freq ue n c y :5 0/60 H z

R esista n ce :1 4.5 Ω

3 R e ac to r

R ate d vo lta g e:2 9.4V ±1 0 %

R ate d cu rr e nt:1 8 .0 A

R ate d freq ue n c y :5 0H z

R ate d du cta n ce :5 .2 m H ±10 %

4 4 -w ay va lv e

R ate d vo lta g e:2 30 V

R ate d cu rr e nt:0 .1 A

R ate d freq ue n c y :5 0H z

R ate d ind u cta nce :2 .1 K Ω

Connector Wiring Diagram

Domestic Air Conditioner

11.3.Problem Symptoms and Measures

Symptom

Check Item Details of Measure

Check the power supply. Check to make sure that the rated voltage is supplied.None of the units

operates

Check the indoor PCB Check to make sure that the indoor PCB is broken Operation sometimes stops.

Check the power supply. A power failure of 2 to 10 cycles can stop air conditioner

operation. Check for faulty operation of the electronic expansion valve.

Set the units to cooling operation, and compare the

temperatures of the liquid side connection pipes of the

connection section among rooms to check the opening and

closing operation of the electronic expansion valves of the

individual units.

Equipment operates but does not cool, or does not heat (only for heat pump)

Diagnosis by service port pressure and operating current.

Check for insufficient gas.

Large operating noise and vibrations

Check the installation condition.

Check to make sure that the required spaces for

installation (specified in the Technical Guide, etc.) are

provided.

35

Seivice diagnosis

Domestic air conditioner

11.4 Error Codes and Description indoor display

Code indication

fault description

Reference Page

Indoor displaying panel code indication

Outdoor (LED1 flash times)

Indoor and Outdoor

E7 15

Communication fault between indoor and outdoor units

Page .

Indoor Malfunction

E1 -- Room temperature sensor failure Page . E2 -- Heat-exchange sensor failure Page .

.egaProrreMORPEEroodnI--4E

E14 -- Indoor fan motor malfunction Page .

Outdoor Malfunction

F12 1 Outdoor EEPROM error Page . F1

2

.egaPMPIfonoitcetorpehT

F22

3 Overcurrent protection of AC electricity

for the outdoor model

Page .

F3 4

Communication fault between the IPM and outdoor PCB

Page.

F19 6 Power voltage is too high or low Page .

F4 8

Overheat protection for Discharge temperature

Page .

F8 9 Outdoor DC fan motor fault F21 10 Defrost temperature sensor failure Page . F7 11 Suction temperature sensor failure Page . F6 12 Ambient temperature sensor failure Page .

F25 13 Discharge temperature sensor failure Page .

F11 18 deviate from the normal for the compressor Page .

F28 19 Loop of the station detect error Page .

F2 24 Overcurrent of the compressor Page .

F23 25

Overcurrent protection for single-phase of the compressor

Page .

E9

21 High work-intense protection

48

38 38 39 40 50

39

43

44

45

46

47

Page .

42 38 38

38

50

44

Page .51

36

Seivice diagnosis

Domestic air conditioner

11.4.1 Thermistor or Related Abnormality

The temperatures detected by the thermistors are used to determine thermistor errors

when the thermistor input is more than 4.92V or less than 0.08V during compressor operation.

Note: The values vary slightly in some models

■ Faulty connector connection

■ Faulty thermistor

■ Faulty PCB

* Caution Be sure to turn off power switch before connect or disconnect connector, or else

parts damage may be occurred.

Thermistor resistance check method: Remove the connector of the thermistor on the PCB, and measure the resistance of thermistor using tester. The relationship between normal temperature and resistance is shown in the value of indoor thermistor.

Method of

malfunction tection

Malfunction

detection conditions

*Thermistor resistance check

Yes

Troubleshooting

E1: Room temperature sensor failure E2: Heat-exchange sensor failure LED1 flash 10 times：Defrost temperature sensor failure LED1 flash 11 times：Suction temperature sensor failure LED1 flash 12 times：Ambient temperature sensor failure LED1 flash 13 times：Discharge temperature sensor failure

Indoor display

Outdoor display

Thermistor resistance check

Is it normal?

NO

YES

Is it normal?

NO

Check the connector onnection

Replace the thermistor

Replace the indoor unit PCB

Correct the connection

37

YES

Seivice diagnosis

Domestic air conditioner

Indoor Display E4: indoor EEPROM error outdoor display F12: Outdoor EEPROM error; Outdoor LED1 flash 1 times

Method of

malfunction

detection

Malfunction

detection

conditions

Supposed

causes

Troubleshooting

The Data detected by the EEPROM are used to determine MCU

when the data of EEPROM is error or the EEPROM is damaged

■Faulty EEPROM data

■Faulty EEPROM

■Faulty PCB

* Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Replace the indoor or outdoor mainboard

11.4.2 EEPROM abnormal

38

Seivice diagnosis

Domestic air conditioner

11.4.3

Indoor fan motor malfunction

Indoor Display

E14

Method of

The rotation speed detected by the Hall IC during fan motor operation is used to determine

Malfunction

abnormal fan motor operation

Detection

Malfunction

when the detected rotation feedback singal don’t receiced in 2 minutes

Decision Conditions

Supposed

■ Operation halt due to breaking of wire inside the fan motor .

Causes

■ Fan motor overheat protection

■ Operation halt due to breaking of the fan motor lead wires

■ Detection error due to faulty indoor unit PCB

Troubleshooting

* Caution

Be sure to turn off power switch before connect or disconnect connector, or

else parts damage may be occurred.

How to check Fan Motor (DC)

1. Check connector connection.

2. Check motor power supply voltage output (pins 1-4).

3. Check motor control voltage (pins 4-5).

4. Check rotation command voltage output (pins 4-6).

5. Check rotation pulse input (pins 4-7).

Notes: the a/c is electrifying, don’t pull out or insert the terminals of the

motor, else the motor would be damaged.

39

Seivice diagnosis

Domestic air conditioner

YES

NO

YES

Is rotation number command pulse generated?

Is rotation number command voltage DC1～6V generated?

YES

NO

YES

Replace indoor unit PCB

Replace fan motor

Replace indoor unit PCB

Replace indoor fan motor

PCB

NO

Replace indoor unit PCB

Is motor control power voltage DC15V

g

enerated?

NO

Does fan rotate smoothly?

NO

Turn power ON and operate fan

Does it rotate?

YES

Turn off power supply and disconnect fan motor connector, then turn power ON

Check output of fan motor connector

Is motor powe r

voltage DC310V

g e n e r a t e d ?

Replace fan motor

Stop fan motor

Turn off power supply and rotate fan by hand

40

Seivice diagnosis

Domestic air conditioner

11.4.4 Outdoor DC fan motor fault

Check whether Terminal on the outdoor mainboard is well inserted.

Is it normal?

YES

NO

Reinsert the terminals

Electrify the machine again and turn

it on in the Cool state with the remote

controller. check whether motor can

run？

YES

Measure the voltage between 3 and 6 of

the terminal about 0-5v.

Is it normal?

NO

the motor of the outdoor unit is damaged

and needs replacing.

Measure the voltage between 1 and 3 of the terminal of

fan motor on the mainboard about DC310V,Measure

the voltage between 3 and 4 of the terminal about

DC15V. Measure the voltage between 5 and 3 of the

terminal about 1-6v.

NO

Is it normal?

The mainboard of the outdoor unit is

damaged and needs replacing.

NO

YES

Method of

m

alfunctiondetectio

n

Malfunction detection

conditions

Troubleshooting

DC fan motor is detected by checking the fan running condition and so on

when the data of EEPROM is error or the EEPROM is damaged

■

DC fan motor protection dues to the DC fan motor faulty

■

DC fan motor protection dues to faulty PCB

Supposed causes

* Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage ma

y

be occurred.

LED1 flash 9 timesOutdoor diplay

41

Haier AS18ND1HRA-WHITE, HSU18VHGL-G, 1U18FE2ERA, HSU18VHGL-W, AS24BS4HRA Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual