Haier 1U18FE2ERA Service Manual
Haier 1U18FE2ERA is a DC inverter FREE MATCH N-Series Wall Mounted type air conditioner. With its advanced features and sleek design, it offers efficient and comfortable cooling and heating solutions for your home.
Here's what you can expect from your new Haier air conditioner:
- Precise temperature control and energy efficiency thanks to DC inverter technology
- Powerful cooling and heating performance to keep you comfortable all year round
- Quiet operation, ensuring a peaceful environment
- Easy-to-use controls for effortless operation
- Compact and stylish design that complements any décor
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SERVICE MANAUL
Wall Mounted Type
DC Inverter FREE MATCH N-Series
Model No.
AS18ND1HRA-WHITE
HSU18VHGL-G
WARNING
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
2014 (Qingdao Haier Air Conditioner General corp. , Ltd)
All rights reserved. Unauthorized copying and distribution is a violation of law
Haier Group
Version : V1 Date : 2014-05-25
Table o f contents
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 ...........................................................................
14
8. System configuration.............................................................................
25
9. Dimensional drawings ...........................................................................
42
10. Conter of gravity..................................................................................
42
11. Service Diagnosis ................................................................................
43
12. Circuit diagrams ..................................................................................
59
Domestic air conditioner
Int r oduction
1 Introduction
1.1 Model name explanation
A S 1 8 N D 1 H R A
Apply toT1; 20 8 ~2 3 0V 6 0HZ/1ph
DC inverter
Heat pump & R410A refrigerant
Version number
50N Platform
Platform of indoor units: N (N platform)
Nominal cooling capacity (18000BTU/h)
Type of indoor unit: S (wall-mounted)
Indoor unit
1 Domestic air conditioner
Intuoduction
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.
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.
Intuoduction
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.
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
For integral units only
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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.
Intuoduction
Domestic air conditioner
Intuoduction
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.
Domestic air conditioner
Intuoduction
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
Caution
Note
Caution
A “note” provides information that is not indispensable, but may nevertheless be valuable to the reader, such as tips and tricks.
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
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.
Domestic air conditioner
Specifications
2.Features
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.
Intergrative 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.
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Specifications
3 Specifications
NOMINAL DISTRIBUTION SYSTEM VOLTAGE
P h a s e
F r e q u e n c y
V o tl a g e
NOMINAL CAPACITY and NOMINAL INPUT
Capacity rated
Power Consumption(Ra t e d )
E E R / C O P
A n n u a l e n e r g y c o n s u m p it o n
M o i s t u r e R e m o v a l
TECHNICAL SPECIFICATIONS
D
W
G
C r i m e n s
P a c k o e l o i g s o r h t s w i o n s a g e d e i g
D i
Sound level h t m e n s i o n s
/
/
H * W * D
H * W * D
/
Sound peessure(high/medium/low)
Sound power(high)
/
H z
V lb lb in in
/ dB dB
1
5 0
2 3 0 cooling heating
Btu/h
Btu
Btu /Btu
K W h in /³ h
17000(4780-13300) 18000(5120-13990)
5222
38
999950
5068
38
6252250
3.21
× 0.77
× 1.06
3.56
× 1.08
× 1.32
28.6
35.2
W h ti e
57/54/51
/
8 Domestic air conditioner
TECHNICAL SPECIFICATIONS-PARTS
Fan
Heat exchanger
T y p e
M o t o r o u t p u t
Air flow rate(high)
Speed(high/middle/low)
Type
S e g m e n t * s t a g e * f ti c h
A ri d ri e c it o n c o n rt o l
Air filter
Temperature control
R e m o t e c o n rt o ll e r m o d e l
Note: the data are based on the conditions shown in the table below c o o il n g
Indoor: 80.6° F DB/66.2°F W B
Outdoor: 95° F DB/75.2° F W B h e a it n g
Indoor:68° F D B
Ou tdoo r : 44.6° F D B /42.8° F W B
P i p i n g l e n g t h
16.4in
W in³/h rpm
Specifications cooling heating
C r o s s lf o w f a n
136.5
31779
136.5
31779
950/850/750
ML finφ 7HI-HX tube
900/800/700
3 * 1 8 * 1 .
4
R i g h t,Left,Horizontal,Downward
Removable/Washable/Mildew Proof
Microcomputer Control
Y R HD01
Conversation formulae
Kcal/h= KW×860
Btu/h= KW×3414 cfm=m³/min×35.3
4
.
Sensors list
type
R o o m s e n s o r
Pipe sensor
Description tI s u s e d f o r d e t e c it n g r o o m t e m p e r a t u r e
Its used for detecting temperature of evaporator
Qty
1
1
9 Domestic air conditioner
5
.
Pinping diagrams
Piping diagrams
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Connector Wiring diagrams
6. Printed Circuit Board Connector Wiring Diagram
Connectors
PCB(1) (Control PCB)
7
5
6 s e ir e s
1
2
3
4
8
9
P C B c o n n e c t o r
CN9
CN6
CN5
CN21
CN52
CN27
CN7
CN23
CN34
C o n n e c t w ti h l o a d
Connector for fan motor
Connector for heat exchanger thermistor and Room temperature thermistor
Connector for UP&DOWN STEP motor
Connector for power N wire
Connector for power L
Connector for power GRN
Connector for display board
Connector for communicate between the indoor board and the outdoor board
Connector for long-range control
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
11 Domestic air conditioner
PCB(1)
Connector Wiring diagrams
CN5
CN52
CN21
CN9
CN27
CN6
CN7
CN34
CN14
C23
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Connector Wiring diagrams
Wiring diagrams
M
DC FAN MOTOR
W B R
1
(N)
2
(L)
3
(C)
GND
Y/G
Y/G
@
CN9
CN52
(L)
C0N3
W
R
C0N2
C0N1
CN23
S
CN51
CN21
N
CN5-1 CN5-2
CN5
CN11
Room card
SW1
CN14
BL
Fresh air
@ up-down stepmoter left stepmoter
EMERGENCY SWITCH
CN7
CN6
CN10
RECEIVER
DISPLAY
AMBIENT TEMP SENSOR
PIPING TEMP SENSOR
Right stepmoter
120
80
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Functions and Control
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
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.
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Domestic air conditioner
Functions and Control
7.1.3 Dehumidifying mode.
* temperature control range: 60.8---86 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 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.
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Domestic air conditioner
Functions and Control
*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.
Set speed
Heat start temp 1
Heat start temp 2
Low speed
Light speed
Keep the high speed. The fan doesn’t stop
Heat start temp 3
Fan/off
Heat start temp 4
Fan/off
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.
* Residue 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
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Domestic air conditioner
Functions and Control 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
Domestic air conditioner
Functions and Control 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 temperature 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
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Functions and Control 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
Domestic air conditioner
Functions and Control 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 programs 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 light 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
Domestic air conditioner
Functions and Control
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 )
-22 165.2170
-5
-6.8
-8.6
-10.4
-12.2
-14
-5.8
-4
-2.2
-0.4
-1.4
-3.2
-20.2
-18.4
-16.6
-14.8
-13
-11.2
-9.4
-7.6
26.6
28.4
30.2
32
33.8
15.8
17.6
19.4
21.2
23
24.8
155.5754
146.5609
138.1285
130.2371
122.8484
115.9272
109.4410
103.3598
97.6556
92.3028
87.2775
82.5577
78.1230
73.9543
70.0342
66.3463
62.8755
59.6076
56.5296
53.6294
50.8956
48.3178
45.8860
43.5912
41.4249
39.3792
37.4465
35.6202
33.8936
32.2608
30.7162
88.7989
84.0695
79.6222
75.4384
71.5010
67.7939
64.3023
61.0123
57.9110
54.9866
52.2278
49.6244
Normal(K )
147.9497
139.5600
131.7022
124.3392
117.4366
110.9627
104.8882
99.1858
93.8305
47.1666
44.8454
42.6525
40.5800
38.6207
36.7676
35.0144
33.3552
31.7844
30.2968
28.8875
80.6728
76.5017
72.5729
68.8710
65.3815
62.0907
58.9863
56.0565
53.2905
50.6781
48.2099
45.8771
Min.(K )
132.3678
125.0806
118.2434
111.8256
105.7989
100.1367
94.8149
89.8106
85.1031
43.6714
41.5851
39.6112
37.7429
35.9739
34.2983
32.7108
31.2062
29.7796
28.4267
27.1431
29.23
29.28
29.32
29.35
29.39
29.43
29.46
29.52
29.55
29.59
29.62
28.80
28.83
28.87
28.90
28.94
28.98
29.01
29.05
29.08
29.12
29.16
29.19
28.51
Tolerance( )
35.15
28.53
28.56
28.60
28.63
35.13
35.11
35.08
35.06
28.67
28.71
28.74
28.76
35.04
35.01
34.99
34.95
34.93
34.92
34.88
34.86
34.83
34.79
34.77
34.74
34.72
34.68
34.65
34.63
34.59
34.56
34.52
34.50
34.47
34.43
34.39
34.36
34.32
34.30
34.27
21
Domestic air conditioner
104
105.8
107.6
109.4
111.2
93.2
95
96.8
98.6
100.4
102.2
82.4
84.2
86
87.8
89.6
91.4
71.6
73.4
75.2
77
78.8
80.6
60.8
62.6
64.4
66.2
68
69.8
50
51.8
53.6
55.4
57.2
59
35.6
37.4
39.2
41
42.8
44.6
46.4
48.2
7.2546
6.9852
6.7273
6.4803
6.2437
6.0170
5.7997
5.5914
5.3916
5.2001
5.0163
11.7102
11.2172
10.7475
10.3000
9.8975
9.5129
9.1454
8.7942
8.4583
8.1371
7.8299
7.5359
20.0176
19.1149
18.2580
17.4442
16.6711
15.9366
15.2385
14.5748
13.9436
13.3431
12.7718
12.2280
29.2545
27.8708
26.5605
25.3193
24.1432
23.0284
21.9714
20.9688
6.9673
6.7008
6.4459
6.2021
5.9687
5.7454
5.5316
5.3269
5.1308
4.9430
4.7630
11.3267
10.8634
10.4216
10.0000
9.5974
9.2132
8.8465
8.4964
8.1621
7.8428
7.5377
7.2461
19.0621
18.2270
17.4331
16.6782
15.9601
15.2770
14.6268
14.0079
13.4185
12.8572
12.3223
11.8126
27.5519
26.2858
25.0851
23.9462
22.8656
21.8398
20.8659
19.9409
22
6.6854
6.4222
6.1707
5.9304
5.7007
5.4812
5.2712
5.0704
4.8783
4.6944
4.5185
10.9459
10.5114
10.0964
9.7000
9.2980
8.9148
8.5496
8.2013
7.8691
7.5522
7.2498
6.9611
18.1358
17.3646
16.6305
15.9315
15.2657
14.6315
14.0271
13.4510
12.9017
12.3778
11.8780
11.4011
25.9250
24.7686
23.6704
22.6273
21.6361
20.6939
19.7982
18.9463
Functions and Control
29.68 34.23
30.09
30.02
29.97
29.89
29.82
29.75
29.68
29.61
29.53
29.46
29.39
30.54
30.60
30.65
30.65
30.63
30.56
30.49
30.43
30.36
30.29
30.24
30.16
30.00
30.06
30.09
30.15
30.18
30.24
30.27
30.33
30.36
30.42
30.45
30.51
29.71
29.75
29.79
29.84
29.88
29.93
29.97
33.87
33.93
34.00
34.05
34.12
34.20
34.25
34.32
34.39
34.45
34.52
33.44
33.40
33.35
33.35
33.37
33.34
33.49
33.55
33.62
33.67
33.75
33.80
33.93
33.89
33.85
33.82
33.78
33.73
33.69
33.66
33.62
33.57
33.53
33.49
34.20
34.16
34.12
34.09
34.05
34.02
33.96
Domestic air conditioner
181.4
183.2
185
186.8
188.6
170.6
172.4
174.2
176
177.8
179.6
159.8
161.6
163.4
165.2
167
168.8
149
150.8
152.6
154.4
156.2
158
138.2
140
141.8
143.6
145.4
147.2
127.4
129.2
131
132.8
134.6
136.4
113
114.8
116.6
118.4
120.2
122
123.8
125.6
1.6913
1.6409
1.5923
1.5454
1.5000
1.4562
1.4139
1.3730
1.3335
1.2953
1.2583
2.4591
2.3815
2.3068
2.2347
2.1652
2.0983
2.0337
1.9714
1.9113
1.8533
1.7974
1.7434
3.6601
3.5374
3.4195
3.3060
3.1969
3.0919
2.9909
2.8936
2.8000
2.7099
2.6232
2.5396
4.8400
4.6708
4.5083
4.3524
4.2026
4.0588
3.9206
3.7878
1.5528
1.5051
1.4592
1.4149
1.3721
1.3308
1.2910
1.2525
1.2153
1.1794
1.1448
2.2840
2.2098
2.1383
2.0695
2.0032
1.9393
1.8778
1.8186
1.7614
1.7064
1.6533
1.6021
3.4416
3.3227
3.2085
3.0989
2.9935
2.8922
2.7948
2.7012
2.6112
2.5246
2.4413
2.3611
4.5905
4.4252
4.2666
4.1145
3.9686
3.8287
3.6943
3.5654
23
1.4243
1.3794
1.3360
1.2942
1.2540
1.2151
1.1776
1.1415
1.1066
1.0730
1.0405
2.1195
2.0486
1.9803
1.9147
1.8516
1.7908
1.7324
1.6761
1.6219
1.5697
1.5194
1.4710
3.2332
3.1183
3.0079
2.9021
2.8005
2.7029
2.6092
2.5193
2.4328
2.3498
2.2700
2.1932
4.3500
4.1887
4.0342
3.8862
3.7443
3.6084
3.4780
3.3531
29.32
Functions and Control
34.59
26.74
26.65
26.56
26.47
26.38
26.29
26.20
26.11
26.02
25.92
25.83
27.75
27.68
27.59
27.52
27.43
27.34
27.27
27.18
27.09
27.00
26.91
26.82
28.72
28.63
28.56
28.49
28.40
28.33
28.26
28.17
28.09
28.00
27.93
27.84
29.25
29.17
29.10
29.03
28.94
28.87
28.80
36.88
36.95
37.04
37.11
37.18
37.27
37.35
37.42
37.51
37.58
37.67
35.98
36.05
36.12
36.21
36.28
36.36
36.43
36.50
36.57
36.64
36.73
36.81
35.13
35.20
35.28
35.33
35.40
35.47
35.55
35.62
35.69
35.76
35.83
35.91
34.65
34.72
34.79
34.86
34.92
34.99
35.06
Domestic air conditioner
0.9756
0.9490
0.9232
0.8983
0.8741
0.8507
0.8281
0.8061
0.7848
0.7641
0.7441
0.7247
1.2226
1.1880
1.1546
1.1223
1.0910
1.0607
1.0314
1.0030
0.7059
0.6877
0.6700
0.6528
0.6361
0.6200
0.6043
0.5891
0.5743
0.5600
0.5460
0.5325
215.6
217.4
219.2
221
222.8
224.6
204.8
206.6
208.4
210.2
212
213.8
190.4
192.2
194
195.8
197.6
199.4
201.2
203
237.2
239
240.8
242.6
244.4
246.2
226.4
228.2
230
231.8
233.6
235.4
248 0.5194 0.4597 0.4066
0.8806
0.8558
0.8319
0.8088
0.7863
0.7646
0.7436
0.7233
0.7036
0.6845
0.6661
0.6482
1.1113
1.0789
1.0476
1.0174
0.9882
0.9599
0.9326
0.9061
0.6308
0.6140
0.5977
0.5820
0.5667
0.5518
0.5374
0.5235
0.5100
0.4968
0.4841
0.4717
0.7941
0.7711
0.7489
0.7275
0.7067
0.6867
0.6672
0.6484
0.6303
0.6127
0.5957
0.5792
1.0092
0.9789
0.9497
0.9215
0.8942
0.8679
0.8424
0.8179
0.5632
0.5478
0.5328
0.5183
0.5043
0.4907
0.4775
0.4648
0.4524
0.4404
0.4288
0.4175
Functions and Control
25.74 37.74
24.98
24.87
24.78
24.67
24.58
24.48
24.39
24.28
24.19
24.08
23.97
23.88
25.65
25.56
25.45
25.36
25.27
25.16
25.07
23.77
23.67
23.56
23.47
23.36
23.25
23.14
23.04
22.93
22.82
22.71
22.60
22.50
38.39
38.48
38.55
38.64
38.73
38.80
38.89
38.98
39.06
39.15
39.24
39.33
37.83
37.90
37.99
38.07
38.16
38.23
38.32
39.42
39.49
39.58
39.67
39.76
39.85
39.94
40.01
40.10
40.19
40.28
40.37
40.46
24
Domestic air conditioner
8 System configuration
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
Domestic air conditioner
Installation
Parts and Functions
Indoor Unit
1
Air Purifying Filter
(inside) Inlet 2
Inlet grille
Outlet
Emergency
Switch
5
9
3
4
10
11
Horizontal flap
(adjust up and down air flow
Don't adjust it manually)
Display board
(inside)
Anion generator
(inside)
Vertical blade
(adjust left and right air fl ow)
12
13
Actual inlet grille may vary from the one shown in the manual according to the product purchased
Display board
1
1 Signal receiver hole
2
3
Ambient temp.display
When receiving the remote control signal, display the set temperature.
COOL display
2
3
4
4
5
HEAT display
HEALTH display
6 DRY display
5
6
14
15
16
17
Remote Control
6
7
8
18
19
20
21
22
23
24
25
1. Mode display
Operation mode
A U T O COOL DRY HEAT F A N
Remote controller
2. Signal sending display
3. SWING display
4. FAN SPEED display
LO MED HI
Display circulated
AUTO
5. LOCK display
6. TIMER OFF display
TIMER ON display
7.TEMP display
8.
Additional functions display
Operation mode QUITE SLEEP HEALTH POWER
Remote controller
9. QUIET button
10. HEAT button
11. COOL button
12. AUTO button
13. FAN button
14. TIMER button
15. HEALTH button
16. LOCK button
Used to lock buttons and LCD display.
17. LIGHT button
Control the lightening and extinguishing of the indoor LED display board.
18. POWER ON/OFF button
19. DRY button
20. TEMP button
21. SWING button
22. HOUR button
23. EXTRA FUNCTION button
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.
24.CANCEL/CONFIRM button
Function: Setting and cancel to the timer and other additional functions.
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
Outdoor Unit
Healthy function is not available for some units.
Inserting the Battery
OUTLET
INLET 4
4
CONNECTING PIPING AND ELECTRICAL WIRING
DRAIN HOSE
3
2
1 3
Remove the battery cover;
Insert the batteries as illustrated.
2 AAA batteries.
Be sure battery polarity is correct + -.
Then put on the cover again.
4
Note:
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.
The unit pictured above is for reference only.
Your product may appear different.
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.
Domestic air conditioner
Operation
Basic Operation
Installation
Remote controller
3
2
4
3
1
Emergency Operation and Test Operation
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 the emergency operation switch is pressed, the unit beeps once, which starts the operation.
When power switch is turned on for the first time and emergency operation starts, the unit will run automatically in the following modes:
Beep
Room temperature
Designated temperature
Timer mode
Fan speed
Operation mode
Above 23 ℃ /73 ℉ 26 ℃ / 79 ℉
No AUTO COOL
Below 23 ℃ /73 ℉ 23 ℃ / 73 ℉ No AUTO HEAT
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.
1. Unit start
Press ON/OFF on the remote controller, unit starts.
2. Select operation mode
COOL button:Cooling mode
HEAT button: Heating mode
DRY button: Dehumidify mode
3.Select temp.setting
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
Press FAN button. For each press, fan speed changes as follows:
Remote controller:
LOW MED HI
Display circulated
AUTO
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.
Operation
Mode
AUTO
COOL
DRY
HEAT
FAN
Test Operation:
Test operation switch is the same as emergency switch.
Use this switch in the test operation when the room temperature is below 16 ℃ / 60 ℉ ,
do not use it in the normal operation.
Continue to press the test operation switch for more than 5 seconds.After
you hear two beeps, release your finger
from the switch: the cooling operation starts with the air flow speed "HI".
Under this operation mode,the fan motor of indoor unit will run in high speed.
Beep-Beep
Air Flow Direction Adjustment
1.Status display of air flow
COOL/DRY:
HEAT:
Initial state
2.Left and right air flow adjustment(manual)
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
Remote
Controller
Note
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 DRY mode , when room temperature is 2 C/4 F degrees less than the temperature set point, the unit will run intermittently at LOW speed regardless of FAN setting.
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.
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.
Cautions:
stereoscopic air flow
When adjusting the louver by hand,turn off the unit.
When humidity is high,condensate water might occur at air outlet if all vertical louvers are right.
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.
Note:
When restarting the unit after it has been turned off, the unit will keep the swing position before it stops working.
Domestic air conditioner
Installation
Operation
Sleep Operation
Press button to enter additional options, cycle the display to , will flash. And then press enter for sleep function.
3.
In AUTO mode
If the unit is running cooling, the sleep mode will follow the function as in cool mode, while follow as in heat mode.
4. In FAN mode
It has no SLEEP function.
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.
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.
Operation Mode
1. In COOL,DRY mode
1 hour after SLEEP mode starts,temp.will become 1 O C/2 F 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.
SLEEP operation starts SLEEP operation stops
Approx.6hrs
1 hr
1 hr
Rises 1 O
Rises 1 O
Temp.setting
Unit stop
In COOL, DRY mode
2.
In HEAT mode
1 hour after SLEEP mode starts,temp will become 2 O C /
4 F lower than temp.setting.After another 1 hour,temp
O O 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.
Temp.setting
Unit stop
1 hr Decreases 2 O C/ 4 F
1 hr
Decreases 2 O
3 hrs
3 hrs
Rises 1 O C/ 2 F
SLEEP operation starts
In HEAT mode
SLEEP operation stops
Power/Quiet Operation
(1) Power Operation
When you need rapid heating or cooling, you can use this function.
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.
(2) Quiet Operation
You can use this function when silence is needed for rest or reading.Press QUIET button, the remote controller will show
, and then achieve to the quiet function. To cancel this function, press the QUIET button.
Note
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.
28 Domestic air conditioner
Operation
Timer On/Off On-Off Operation
1.After unit starts, select your desired operation mode.
Healthy Airflow Operation
1.Press to start
Setting for comfortable conditions.
Installation
2.Press TIMER button to change TIMER mode. Every time the button is pressed, display changes as follows:
Remote controller:
0.5h
0.5h
TIMER ON TIMER OFF
0.5h
TIMER ON-OFF
0.5h
TIMER OFF-ON
BLANK
Then select your desired TIMER mode (TIMER ON or
TIMER OFF or TIMER ON-OFF). " "or " "will flash.
2.The setting of healthy airflow function
Press button to enter additional o ptions,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.
Healthy airflow upwarder
Healthy airflow downwarder
Present position
3.Press / button to set time.
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.
It can be adjusted within 24 hours.
3.To cancel of the healthy airflow function
Press button to enter additional o ptions,Press this button continuously, the louvers location will cycle between the three locations again, then button to cancel.
4.Confirm timer setting
After adjusting the time,press button and confirm the time the ON or OFF button will not flash any more.
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.
5.Cancel timer setting
Press the timer button until the time display eliminated.
Note:
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.
1.After setting the healthy airflow function, the position
louver is fixed.
2.In heating, it is better to select the
3.In cooling, it is better to select the mode.
mode.
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 .
Domestic air conditioner
Maintenance
For Smart Use of The Air Conditioner
Setting of proper room temperature
Proper temperature
Do not block the air inlet or outlet
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.
Do not use the following for cleaning
Close doors and windows during operation
Use the timer effectively
Remote Controller Indoor Unit
Installation
During cooling operation prevent the penetration
of direct sunlight with curtain or blind
If the unit is not to be used for a long time, turn off the power supply main switch.
OFF
Use the louvers effectively m
Hot water over 40 cause
O C(104 O F) may discoloring or deformation.
Air Filter Cleaning
Open the inlet grille by pulling it upward.
Remove the filter.
Push up the filter's center tab slightly until it is released from the stopper, and remove the filter downward.
Clean the filter.
Use a vacuum cleaner to remove dust, or wash the filter with water.After washing, dry the filter completely before putting it back in the unit.
Attach the filter.
Attach the filter correctly so that the "FRONT" indication
is facing to the front.Make sure that the filter is completely fixed behind the stopper.If the right and left filters are not may cause defects.
attached correctly, that
Once every two weeks
Close the inlet grille.
Replacement of Air Purifying Filter
1.Open the lnlet Grille
Prop up the inlet grille by using the
grille-support located an the right side of the indoor unit.
4.Attach the standard air filter
(Necessary installation)
2.Detach the Standard Air Filter
Slide the knob slightly upward to release the filter, then withdraw it.
ATTENTION:
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.
5.Close the Inlet Grille
Close the inlet grille securely
3.Attach Air Purifying Filter
Put air purifying filter into the right and left filter frames.
Detach old Air Purifying Filter NOTE:
The photocatalyst air purifying filter will be solarized in fixed time. In normal use, it will be solarized every 6 months.
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 using vacuum cleaner or flapping them lightly,otherwise , its performance will be affected.
Please keep the bacteria-killing medium air purifying filter cool and dry. Avoid long term exposure to sunlight when not in use as its ability to sterilize will be reduced.
Domestic air conditioner
Cautions
WARNING
This system must be installed by a qualified HVAC professional.
Do not install the air conditioner by yourself improper installation may cause fire, water leakage, personal injury or death.
If something abnormal occurs immediately stop the operation button and contact service technician.
WARNING
Connect to a single circuit outlet.
Check proper installation of the drainage securely
Installation
OFF
Connect power supply cord to the outlet completely
STRICT
ENFORCEMENT
Use the proper voltage
STRICT
ENFORCEMENT
Do not use power supply cord in a bundle.
STRICT
ENFORCEMENT
Take care not to damage the power supply cord.
STRICT
ENFORCEMENT
1.Do not use extension cords or plug adapters.
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.
PROHIBITION
Do not insert objects into the air inlet or outlet of the outdoor unit..
PROHIBITION
Do not start or stop the operation by disconnecting the power supply cord.
PROHIBITION
Do not channel the air flow directly at people.
Do not attempt to repair the unit. Call for an authorized service technician.
PROHIBITION
Connect the earth cable.
PROHIBITION
Do not place or store any objects on the indoor unit.
PROHIBITION
CAUTION
Take fresh air occasionally especially when gas appliance is running at the same time.
Do not operate the switch with wet hand.
earthing
PROHIBITION
Do not install the unit near a fireplace or other heating apparatus.
STRICT
ENFORCEMENT
Install the outdoor unit securely on a base.
PROHIBITION
Do not pour water onto the unit for cleaning
PROHIBITION
Do not place animals or plants in the direct path of the air flow
PROHIBITION
Do not place any objects on or climb on the outdoor unit.
PROHIBITION
Do not place flower vase or water containers on the top of the unit.
PROHIBITION
31
PROHIBITION PROHIBITION
Domestic air conditioner
Trouble shooting
Before calling for service, check the following first.
Phenomenon
The system does not restart immediately.
Noise is heard
Cause or check points
When unit is stopped, it won't restart immediately until 3 minutes have elapsed to protect the system.
When the electric plug is pulled out and reinserted, the protection circuit will work for 3 minutes to protect the air conditioner.
During unit operation or at stop, a swishing or gurgling noise may be heard.At first 2-3 minutes after unit start, this noise is more noticeable.
(This noise is generated by refrigerant flowing in the system.)
Should there be a big noise from air flow in unit operation, air
filter may be too dirty.
Normal performance inspection
Multiple check
Odors are present The system circulates any remaining odors.
Mist or steam are blown out.
In dry mode, fan speed can’t be changed.
Poor cooling
During COOL or DRY operation, indoor unit may blow out mist.
This is due to the sudden cooling of indoor air.
In DRY mode, when room temperature becomes lower than temp.
o F,unit will run intermittently at LOW speed regardless of FAN setting.
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?
Normally it should be cleaned every 14 days.
Are there any obstacles in front of
inlet and outlet?
Is temperature set correctly?
windows left open?
Is there any direct sunlight through the window during the cooling operation?(Use curtain)
Are there too many heat sources or too many people in the room during cooling?
Cautions
Installation
Do not obstruct or cover the ventilation conditoner.Do not put fingers inlet/outlet and swing louver.
grille of the air or any objects into the
Do not allow children to play with the air conditioner .In no case should children be allowed to sit on the outdoor unit.
Specifications
The refrigerating circuit is a sealed system.
The machine is adaptive in following situation
1.Applicable ambient temperature range:
Cooling
Indoor
Outdoor
Indoor
Heating
Outdoor
Outdoor
(INVERTER)
Maximum:D.B/W.B
Minimum:D.B/W.B
Maximum:D.B/W.B
Minimum: D.B
Maximum:D.B
Minimum: D.B
Maximum:D.B/W.B
Minimum:D.B/W.B
Maximum:D.B/W.B
Minimum:D.B
89.6 /73.4
67 /57
115 /75
67 /57
80.6
32
75 /65
19.4
75 /65
5
2. If the power supply cord is damaged, it must be replaced by the
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.
7.
The power plug and connecting cable attestation.
must have acquired the local
8. In order to protect the units,please t urn off the unit first, wait 30
seconds and turn off the power.
Domestic air conditioner
System configuration
Installation Manual of Room Air Conditioner
Preparation
Necessary Tools for Installation
●
●
●
●
●
●
Hammer
Nipper
Hacksaw
Hole core drill
Gas leakage detector or soap-and-water solution
●
●
●
●
●
●
Torque wrench
(0.67 in,0.87in ,1.02in)
Pipe cutter
Flaring tool
Knife
Measuring tape
Reamer
Power Source
● All wiring to the unit must be in accordance with the National Electric code and local ordinances.
Selection of Installation Place
Indoor 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.
Place where the distance of more than lm from televisions, radios, wireless apparatuses and fl uorescent lamps 3 feet or approximately.
In the case of fi xing the remote controller on a wall, place where the indoor unit can receive signals when the fl uorescent lamps in the room are in use.
●
●
●
●
Outdoor Unit - Select a location that is
Less affected by rain or direct sunlight and is sufficiently ven tilated.
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.
A distance marked is available as illustrated in the below fi gure.
Drawing for the installation of indoor and outdoor units
The models adopt HFC free refrigerant R410A
Attention must be paid to the pitch of drain hose more than 5cm
( 2 inches ) more than
10cm
(4 inches)
G
Optional parts for piping
E
F
G
A
B
C
D
Non-adhesive tape
Adhesive tape
Saddle (L.S) with screws
Connecting electric cable for indoor and outdoor
Drain hose
Insulating material
Piping hole cover
Arrangement of piping directions
Rear left
Left Rear right
Right
Below more than 10cm
( 4 inches )
A
F
C
Floor fi xing dimensions of the outdoor unit
X
Model
Y X
Z
Dimensions(inches) x y z more than10cm
( 4 inches ) more than10cm
( 4 inches )
●
●
The marks from
G in the fi
A to gure are the name of the parts.
The distance between the indoor unit and the fl oor should be more than 2m or 6 feet.
more than 60cm
( 24 inches )
D
E
HSU12VHGL-W 5 1/2 19 2/3 10 1/16
Fixing of outdoor unit
● Fix the unit to concrete or block
(10mm) securely.
●
● with bolts
When fi tting the unit to wall surface, roof or rooftop, fi x the unit securely in consideration of earthquake and strong wind.
If vibration may affect the house, fi x the unit by attaching a vibration-proof mat.
more than 15cm
( 5 7/8 inches )
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
33
Domestic air conditioner
Accessory parts
Remote controller (1)
AAA dry battery (2)
Mounting plate (1)
Plastic cap (4)
Ø4X25 Screw (4)
Model
Drain hose (1)
Cushion (4)
Drain-elbow (1)
Pipe supporting plate (1)
Selection of pipe
Liquid pipe (Ø) Gas pipe (Ø)
Installation
2 Making a Hole on the Wall and Fitting the Piping Hole Cover
●
●
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
Wall hole
ØBmm
Pitch downward for drainage
09k/12k : B= 60mm(2 3/8 inches)
18k/24k : B=70mm(2 3/4 inches)
Indoor side
(Section of wall hole)
Outdoor side
Thickness of wall
G Piping hole pipe
HSU18VHGL-W
6.35mm (1/4") 12.7mm (1/2")
NOTE : The thickness of the pipe must be 0.8mm(1/16”) at least.
Indoor unit
1 Fitting of the Mounting Plate and Positioning of the wall Hole
When the mounting plate is fi rst fi xed
1. Carry out, based on the wall studs or lintels, a proper leveling for the plate to be fi xed 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
B= 60mm
A=145mm
B= 70mm
A=125mm
B= 60mm
A=145mm
3 Installation of the Indoor Unit
Drawing of pipe
[ 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 on the front side, then connect them.
3. Coat the fl aring seal face with refrigerant oil and connect pipes.
Cover the tubing connection with insulation materials closely, and with adhesive tape.
Indoor/outdoor electric cable
Lid for right piping
Lid for under piping pipe
Lid for left piping
Insulation material
Drain hose
Piping
Pipe supporting plate
Fix with adhesive tape
● 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.
Fixing the indoor unit body
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.
●
●
Hang the unit body onto the upper notches of the mounting plate. Move the body from side to side to verify its secure fi xing.
In order to fi x the body onto the mounting plate,hold up the body from the underside and then put it down perpendicularly.
Unloading of indoor unit body mounting plate
● When you unload the indoor unit,please use your hand to raise the body , then lift the bottom of the body outward slightly and lift the unit until it leaves the mounting plate. agraffe mounting plate
Domestic air conditioner
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.
When connecting the cable after installing the indoor unit
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.
When connecting the cable before installing the indoor unit
●
●
●
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.
Note When connecting the cable, con fi rm the terminal number of indoor and outdoor units carefully. If wiring is not correct, the unit will not operate properly and could cause a defect.
Indoor unit
Outdoor unit
4wire 14AWG
(4G0.75mm )
Control Wiring
Power
Wiring
{
HSU18VHGL-W
Power cable: 3wire with ground 14AWG
1. If the supply cord is damaged, it must be replaced by the manufacturer or its service agent or a similar quali fi ed 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
T.3.15A/250VAC (Indoor), T.25A/250VAC (Outdoor).
3. The wiring method should be in line with the local wiring standard.
4. Use an HVACR circuit breaker or time delay fuse.
Outdoor unit
1 Installation of Outdoor Unit
Installation
Install according to the instructions on the 1st page of this manual
2 Connection of pipes
●
●
●
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 fi rst makes working easier.
Ensure the interconnecting tubing is approved for R410A.
Half union
Spanner
Flare nut
Forced fastening without careful centering may damage the threads and cause a leakage of gas.
Torque wrench
Pipe Diameter( ǿ )
Liquid side6.35mm(1/4")
Fastening torque
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
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.
CAUTION
Outdoor unit
B
A
Indoor unit
B
A
Indoor unit
Outdoor unit
Outdoor unit
A
B
Oil trap
Indoor unit
•
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)
Cutting and Flaring Work of Piping
●
●
Pipe cutting is carried out with a pipe cutter and burs must
After inserting the fl are nut, fl aring work is carried out.
be removed.
A
Flare tool for R410A
Clutch-type
0~0.5mm
0~1/51 inch
Conventional fl are tool clutch-type(Rigid-type) Wing-nut type (Imperial-type)
1.0~1.5mm
3/76 ~1/17 inch
1.5~2.0mm
1/17 ~1/8 inch
Flare tooling die
1.Cut pipe 2.Remove burs
3.Insert the fl are nut
4.Flare pipe
Correct Incorrect
Lean Damage of fl are Crack Partial Too outside
Domestic air conditioner
Installation
3 Connection 1 Power Source Installation
●
●
●
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 defect in the unit.
Fix the cable with a clamp.
●
●
●
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 earth leakage breaker.(GFCI)
For installation in other places, use an HVACR circuit breaker of time delay fuse.
4 Attaching Drain-Elbow
● If the drain-elbow is used, please attach as shown in figure.
(Note: Only for heat pump unit.)
5 Purging Method:To use vacuum pump
1.
Detach the service port’s cap of 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 and connect the vacuum pump to the center port of the manifold.
2.
Open the handle on the low side of the gauge manifold and operate vacuum pump.
3.
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.
4.
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.
5.
No gas leakage? Go to step 6.
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 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.
2 On Drainage
●
●
Please install the drain hose and ensure downward flow.
Please don’t do the drainage as shown below.
Less than
5cm
It becomes high midway.
The end is immersed in water.
It waves.
The gap with the ground is too small.
There is the bad smell from a ditch
●
●
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 to the hose to prevent condensation.
con fi rm that drainage apply insulation to
■ Refrigerant charge label
Contains fluorinated greenhouse gases covered by the Kyoto Protocol
R410A
1= kg
2
1
2=
1+2= kg kg
A
B
C
D
Step 2.
Open
F E
6.
Detach the charge hose valve completely.
from the service port, open 2-way valve and 3-way
7.
To prevent the gas leakage, replace the service port and valve caps.
8.
After attaching the caps, check for leakage around the caps.
Step 1.
2-way valve Liquid Side
3-way valve Gas Side
Tube(for R410A)
Gaugemanifold(for R410A)
Gauge manifold
Vacuum pump
Step 3.
Close
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
Step 4.
2-way valve
3-way valve
Step 6.
2-way valve
3-way valve
●
●
Open 90 O
2-way valve 3-way valve
Step 7.
Service port cap
CAUTION
2-way valve
3-way valve
Valve cap
Valve cap
If the refrigerant of the air conditioner leaks, it is necessary to discharge all the refrigerant. Repair the leak, vacuum the unit then charge the liquid refrigerant into air conditioner according to the amount marked on the name plate.
Please do not let other cooling medium, except speci fi ed one (R410A), or air enter into the cooling circulation system. This could cause high pressure and could cause a leak and lead to personal injuries.
■ Check for Installation and Test Run
■ Please kindly explain to our customers how to operate through the instruction manual.
Check Items for Test Run Put check mark in boxes
Gas leak from interconnecting tubing?
Installation is on the interconnecting tubing?
Are the connecting wirings of indoor and outdoor fi rmly inserted to the terminal block?
Is the connecting wiring of indoor and outdoor fi rmly fi xed?
Is drainage securely carried out?
Is the ground wire securely connected?
Is the indoor unit securely fi xed?
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?
Domestic air conditioner
9.Dimensional drawings
Seivice diagnosis
1.06
3.27
0.77
0.26
1.16
0.26
10.Center of gravity
1.06
3.27
1.12
0.37
0.77
37 Domestic air conditioner
11 Service Diagnosis
Seivice 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.
11.2 Parameter of primary electronic appliance
NO Nam e Param eter Picture
1 Fan m otor
Rated voltage: DC310V
Rated current:0.17A
Rated frequency:
Resistance:548Ω
-
11.3 Problem Symptoms and Measures
S y m p t o m C h e c k tI e m D e t a li s o f M e a s u r e
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.
Diagnosis by service port pressure and operating current.
Check for insufficient gas.
38 Domestic air conditioner
11.4 Error Codes and Description indoor display
Code indication
Indoor displaying panel code indication
Outdoor
(LED1 flash times) fault description
Indoor and
Outdoor
Indoor Malfunction
Outdoor
Malfunction
E7
F22
F3
F19
F4
F8
F21
F7
F6
F25
F11
F28
F2
E1
E2
E 4
E14
F12
F1
F23
E9
15
18
19
24
9
10
11
12
13
--
--
--
--
1
2
3
4
6
8
25
21
Seivice diagnosis
Reference
Page
Communication fault between indoor and outdoor units
Room temperature sensor failure
Heat-exchange sensor failure
I n d o o r E E P R O M e rr o r
Indoor fan motor malfunction
Outdoor EEPROM error
T h e p r o t e c it o n o f I P M
Overcurrent protection of AC electricity for the outdoor model
Communication fault between the IPM and outdoor PCB
Power voltage is too high or low
Overheat protection for Discharge temperature
Outdoor DC fan motor fault
Defrost temperature sensor failure
Suction temperature sensor failure
Ambient temperature sensor failure
Discharge temperature sensor failure
Overcurrent of the compressor
Overcurrent protection for single-phase of the compressor
Page .
Page .
Page .
P a g e
P a g e
Page .
Page.
Page .
Page .
.
.
50
40
40
41
Page .
42
Page .
41
45
46
47
Page .
44
Page .
40
Page .
40
Page .
40
Page .
40 deviate from the normal for the compressor Page .
52
Loop of the station detect error Page .
52
Page .
46
Page .
48
49
46
High work-intense protection Page .53
39 Domestic air conditioner
11.4.1 Thermistor or Related Abnormality
Indoor display
Outdoor display
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
Seivice diagnosis
Method of malfunction tection
Malfunction detection conditions
*Thermistor resistance check
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.
Check the connector onnection
NO
Is it normal?
Y
ES
Thermistor resistance check
Correct the connection
NO
Is it normal?
Replace the thermistor
Y ES
Replace the indoor unit PCB
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.
40 Domestic air conditioner
11.4.2 EEPROM abnormal
Indoor Display outdoor display
Method of malfunction detection
E4: indoor EEPROM error
F12: Outdoor EEPROM error; Outdoor LED1 flash 1 times
The Data detected by the EEPROM are used to determine MCU
Malfunction detection conditions
Supposed causes
Troubleshooting when the data of EEPROM is error or the EEPROM is damaged
Seivice diagnosis
■ 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 Domestic air conditioner
11.4.3 Indoor fan motor malfunction
Indoor Display E14
Seivice diagnosis
Method of The rotation speed detected by the Hall IC during fan motor operation is used to determine
Detection
Decision
Conditions
Supposed ■ Operation halt due to breaking of wire inside the fan motor .
■ Fan motor overheat protection
■ Operation halt due to breaking of the fan motor lead wires
Troubleshooting
■ Detection error due to faulty indoor unit PCB
* 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.
42 Domestic air conditioner
Turn off power supply and rotate fan by hand
NO
Does fan rotate smoothly?
Y ES
Turn power ON and operate fan
Replace fan motor
N O
Does it rotate?
Seivice diagnosis
Turn off power supply and disconnect fan motor connector, then turn power ON
Y ES Check output of fan motor connector
Stop fan motor
Is rotation number command pulse generated?
N O
Replace indoor fan motor
PCB
Y ES
Is motor power voltage DC310V g e n e r a t e d ?
Y ES
Is motor control power voltage DC15V generated?
Y ES
Is rotation number command voltage
DC1 ~ 6V generated?
NO
Replace indoor unit PCB
NO
Replace indoor unit PCB
Y ES
Replace fan motor
N O
Replace indoor unit PCB
43 Domestic air conditioner
11.4.4 Outdoor DC fan motor fault
Outdoor diplay LED1 flash 9 times
Method of malfunction detection
Malfunction detection conditions when the data of EEPROM is error or the EEPROM is damaged
Seivice diagnosis
DC fan motor is detected by checking the fan running condition and so on
Supposed causes
■ DC fan motor protection dues to the DC fan motor faulty
■ DC fan motor protection dues to faulty PCB
Troubleshooting
* Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Check whether Terminal on the outdoor mainboard is well inserted.
NO Reinsert the terminals
Is it normal?
Y ES
Electrify the machine again and turn it on in the Cool state with the remote controller. check whether motor can run ?
Y ES
Measure the voltage between 3 and 6 of the terminal about 0-5v.
NO
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.
Is it normal?
N O the motor of the outdoor unit is damaged and needs replacing.
Y ES
Is it normal?
Y ES
N O
The mainboard of the outdoor unit is damaged and needs replacing.
Domestic air conditioner
11.4.5 IPM protection
Outdoor diplay LED1 flash 2 times
Method of malfunction detection
Seivice diagnosis
IPM protection is detected by checking the compressor running condition and so on
Malfunction detection conditions
Supposed causes
Troubleshooting
■ 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
■ Compressor wiring disconnected
* Caution
Be sure to turn off power switch before connect or disconnect connector, or else parts damage may be occurred.
.
Electrify the machine again and turn it on with the remote controller,If malfunctions are reported before or upon the compressor being started up,
YES
IPM Module is damaged and needs replacing.
Malfunction unsolved
NO
The compressor is started normally, but malfunctions are reported after it has run for some time.
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.
45 Domestic air conditioner
11.4.6 Over-current of the compressor
Outdoor diplay LED1 flash 3 or 24 or 25 times
Method of malfunction detection
Malfunction detection conditions
Supposed causes
Troubleshooting he current of the compressor is too high
Seivice diagnosis when the IPM Module is damaged or the compressor is damaged. power supply voltage is too low or too high
■ Faulty IPM Module
■ Faulty compressor
■ Faulty power supply
* Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred..
.
Electrify the machine again and turn it on with the remote controller, If malfunctions are reported before or upon the compressor being started up,
YES
IPM Module is damaged and needs replacing.
NO
The compressor is started normally, but malfunctions are reported after it has run for some time. Check the power supply is too low or too high
NO
NO the system may have been over or under charged with gas, which can be judged through the pressure of the measuring system.
Y ES
Repair the power supply
Domestic air conditioner
11.4.7 The communication fault between IPM and outdoor PCB
Outdoor diplay LED1 flash 4 times
Method of malfunction detection
Malfunction detection conditions
Supposed causes
Troubleshooting
Seivice diagnosis
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 wiring disconnected
* Caution
Be sure to turn off power switch before connect or disconnect connector, or else parts damage may be occurred
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?
NO 1) Pull out and reinsert the terminals.
2) Replace connected wire
Malfunction unsolved
YES
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,
YES
Replace the outdoor IPM module with a new one.
NO
Replace the outdoor mainboard with a new one
Domestic air conditioner
11.4.8 Power Supply Over or under voltage fault
Outdoor diplay LED1 flash 6 times The power supply is over voltage
Method of malfunction detection
Malfunction detection conditions
Supposed causes
Seivice diagnosis
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
Troubleshooting
■ Supply voltage not as specified.
■ The IPM module is broken.
■ The outdoor PCB is broken.
* Caution
Be sure to turn off power switch before connect or disconnect connector, or else parts damage may be occurred.
Electrify the machine again and turn it on with the remote controller. Check whether the compressor is started normally
Is it ok?
N O
Y ES
Test the outdoor power supply
(+310VDC) with a multimeter.
check whether the power is >150 V or <390V?
NO
Y ES
~230 is ok?
NO
This question may be caused by the power. Repair the power supply.
Y ES
Maybe there is some disturbance
Change the IPM module
Change the IPM module
48 Domestic air conditioner
11.4.9 Overheat Protection For Discharge Temperature
Outdoor diplay LED1 flash 8 times
Method of malfunction detection
Malfunction detection conditions
Supposed causes
Seivice diagnosis
The Discharge temperature control is checked with the temperature being detected by the Discharge pipe thermistor when the compressor discharge temperature is above 230°
Troubleshooting
■ Electronic expansion valve defective
■ Faulty thermistor
■ Faulty PCB
* Caution
Be sure to turn off power switch before connect or disconnect connector, or else parts damage may be occurred.
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
230 ° F shortly after the machine starts up?
NO
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 resistance-temperature table according to the
YES
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.
the results much?
deviate
NO
The outdoor mainboard is damaged and needs be replaced
YES
The sensor is damaged. Replace the sensor with a new one.
Domestic air conditioner
11.4.10 The communication fault between indoor and outdoor
indoor diplay
Outdoor diplay
E7
LED1 flash 15 times
Method of malfunction detection
Seivice diagnosis
Communication is detected by checking the indoor PCB and the outdoor PCB
Malfunction detection conditions
Supposed causes
Troubleshooting
■ 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
* Caution
Be sure to turn off power switch before connect or disconnect connector, or else parts damage may be occurred.
Y ES
The outdoor mainboard needs dehumidification.
Restart the a/c and it becomes normally.
NO
If starting up normally, but malfunction occurs again after a while
YES
NO
The outdoor mainboard needs dedust.
Check whether the linking cable between the indoor and outdoor is well connected or whether its core wires are well insulated.
N O
1. Reconnect the linking cable;
2. Replace the linking cable with new one.
Y ES
( A )
50 Domestic air conditioner
Seivice diagnosis
( A )
Check the indoor mainboard.
Y ES
NO
Test the outdoor power supply (230VAC and +310VDC) with a multimeter.
Measure the voltage between Jumpers 3 and
4 of IC1 on the indoor mainboard with a multimeter.
If both 230VAC and 310DC are available, measure +12V
(from7805) is available.
If the voltage is of a constant value of 0V DCto5V DC
If 230VAC is available but 310DC not, the power module is damaged, replace it with a new one.
YES
NO
The indoor mainboard is damaged; replace it with a new one.
The outdoor mainboard is damaged;
Replace them with a new one.
YES
Measure the AC voltage between positions 1 and 3 on the terminal of outdoor unit with a multimeter.
If the value is constant at about 30V, the indoor mainboard is damaged, replace it with a new one.
NO
If the value varies between 0 and 80 VAC, the outdoor mainboard is damaged, replace it with a new one.
The outdoor mainboard is damaged; replace it with a new one.
Domestic air conditioner
Circuit diagrams
11.4.11 Loss of synchronism detection
Inverter side current detection is abnormal
Outdoor diplay LED1 flash 18 times
LED1 flash 19 times
Method of malfunction detection
Malfunction detection conditions
Supposed causes
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
Troubleshooting
■ Faulty The wiring of compressor
■ Faulty compressor
■ Faulty PCB
* Caution
Be sure to turn off power switch before connect or disconnect connector, or else parts damage may be occurred.
Within 3 minutes after the machine is supplied with power and turned on with the remote controller, check whether the compressor can start up
NO
1. The wiring of compressor is incorrect or the connection is poor;
2. The compressor is damaged
YES
At first, the compressor start up ,soon the compressor stopped with the LED1 on the outdoor PCB blinks ( 1Hz ) 19/18 times
Maybe there is some disturbance
YES
IPM Module is damaged and needs replacing.
Malfunction unsolved the Malfunctions exist also, the compressor is damaged replace a new one
52 Domestic air conditioner
Circuit diagrams
11.4.12 High work-intense protection
Outdoor diplay LED1 flash 21 times
Method of malfunction detection
Malfunction detection conditions
Supposed causes
Troubleshooting
High work-intense control is activated in the heating mode if the temperature being sensed by 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
* Caution
Be sure to turn off power switch before connect or disconnect connector, or else parts damage may be occurred.
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?
NO
The indoor unit blows poorly due to blocked filters or poor condition of the fan?
NO
Use some tools to measure the pressure of system ,
YES
YES 1 、 Check room temperature and pipe temperature sensor.
2 、 the temperature monitoring circuit of the indoor mainboard
1) Clean the filters
2) Reinstall the fan.
5 3 Domestic air conditioner
Circuit diagrams
12. Circuit diagrams
R3
2K
+5V
IC1
P1
2SA1037AK
R11 RST
3
4
1
2
A0
A1
A2
GND
JP4
4
3
2
1
RST
+5V
MODE
24C04
TJC8-04 (立式)
ONLINE +5V
2K
C1
C11
100nF
VCC
WP
SCL
SDA
8
7
6
5
+5V
R30
10K
EEPROM
R63
R85 10K
R54
10K
+5V
R29
10K
SCL
SDA
JP3
4
3
2
1
TJC8-04
4
3
2
1
SW2
NDI-04H
+5V
7
8
5
6
R33
C18
100nF
560 Ω
+5V
R103 20KR
10K
R102
C28 C20
R104 2K
R69
R7
2K
2K
C2
BM
25/35
A/B
BUZZER
CN11
5
4
3
2
A
B
C
D
R10
10K
RESET
BUZZ1
PKM13EPY-4002
B10B-PH-K-S
4
3
2
1
CN5-1
5
4
3
2
1
CN5-2
5
CN5
10
9
8
7
6
5
4
3
2
1
12V
A
B
C
D
+12V
A
B
C
D
12V
B5B-PH-K-S红色 立式
UP-DOWN STEPMOTOR
12V
+12V
1
LSTEP MOTOR
B5B-PH-K
R23
10K
HTVSB7.0CA-7V-600W
13
14
15
16
9
10
11
12
100nF
+5V
100uF-16V
R82 220
+12V
Ω
R50
2K
+12V
TVS1
E11
100uF-25V
R9
E2
C6
100nF
XT1
10K
C37
1nF
+5V
R94
10K
R71
HXF
MODE
HXF
10K
RST
C15 100nF
4C
3C
2C
1C
COM
7C
6C
5C
E
7B
6B
5B
4B
3B
2B
1B
8
7
6
5
4
3
2
1
1M
R105
R79
R76
R72
R81
1K
1K
1K
1K
1K
BUZZ
LSTEP_A
LSTEP_B
LSTEP_C
LSTEP_D
USTEP_A
ULN2003A
IC8
+12V
13
14
15
16
9
10
11
12
C10 100nF
IC12
4C
3C
2C
1C
COM
7C
6C
5C
E
7B
6B
5B
4B
3B
2B
1B
8
7
6
5
4
3
2
1
ZJ/SS
R84
R48
R52
R60
R65
R67
R75
JP1
2
1
R2
R5
TJC8-02( 立式 )
1K
1K
1K
1K
1K
1K
1K
ULN2003A
CN9
7
B5P7-XH-A
2
1
6
5
4
3
PG-OUT
PG-FEEDBACK
VS
R58
+15V
2.7K
+15V
R57
10K
IC3 TLP421
R68
10K
C17
100nF
E15
℃
10K
1K
R59
+5V
C16
CHECK/S_TIME
100nF
℃
R36
R39
10K
R64
10K
10K
1K
C14
1nF
IC7
TLP421
13
14
15
16
9
10
11
12
7
8
5
6
3
4
1
2
P33/SSI
P34/SDA/SCS
MODE
P43/XCIN
P44/XCOUT
RESET
P47/XOUT
VSS/AVSS
P46/XIN
VCC/AVCC
P54/TCIOD
P53/TCIOC
P52/TCIOB
P51/TCIOA/TCTRG
P50/TCCLK
P27/TDIOD1
+5V
+5V
R61
390 Ω
IC2
R5F212A7SNFA
+5V
5267-04A
3
4
1
2
CN34
+5V
GND
TX
RX
C24
10nF
KI1/AN9/P11
KI2/AN10/P12
KI3/AN11/P13
(INT2)/P32
(INT1)/P36
TAO/P30
TBO/P31
TXD2/P63
RXD2/P64
(CLK1)/CLK2/P65
RXD1/INT3/P67
TXD1/INT2/P66
INT0/P45
TEO/P60
TFO00/P80
TFO01/P81
R88
10K
R108
1K
NET COM
R97
100 Ω
R98
100 Ω
R86
R49
44
43
42
41
48
47
46
45
40
39
38
37
36
35
34
33
J45 1
JX1
1K R42
1K
ROOM
PIPE
C29
10nF
COMM_TX
COMM_RX
R109
J46 1
JX2
R40
R24
R25
C3
10nF
2
+5V
10K
10K
2
1K
1K
R27
DIG_MODE
DIGL
DIGH
10K R93
SER
RCK
SRCK
IR
C19
1nF
10K
φ3-RED
REMOTE_RX
+5V
FLZ1
HXF
R28
R53
R6
R16
R18
R17
R21
R31
LED1
R70
R87
R45
R44
R41
R46
100 Ω
100 Ω
100 Ω
100 Ω
100 Ω
100 Ω
1K
+5V
+5V
4.7uF-50V
E3
E5
4.7uF-50V
1K
1K
1K
1K
1K
1K
7
8
5
6
3
4
1
2
CN6
4
3
2
1
B4B-XH-A
+5V
IC11 ULN2003A
5B
6B
7B
E
1B
2B
3B
4B
5C
6C
7C
COM
1C
2C
3C
4C
IR
R62
16
15
FLZ
14
13
HXF1
12
11
10
9
+12V
+12V
12V
A
B
C
D
4
3
2
1
C33
100nF
CN10
5
B5B-XH-A
DISPLAY-0011800161
B10B-PH-K-S
IR
RCK
3
4
1
2
DIGH
DIGL
MODE
+5V
SER
SRCK
GG
GND
5V
7
8
5
6
9
10
10K
E1
100uF-16V
CN7
7
8
5
6
3
4
1
2
COM3
COM2
+5V
GND
SER
RCK
SRCK
IR
B8B-PH-K-S
DISPLAY-0011800184/0033
REMOTE_TX
R34 1K
R73
10K
+5V
C21
10nF
N1
SS8050LT1
FK
R56
R92 2K
C27
100nF N3
SS8050LT1
R38 10K
R106
10K
4.7K
N2
SS8050LT1
R43
27 Ω
D15
RLS4148
CN36
3
2
1
B3B-XH-A
D16
RLS4148
FAR
R95
R66 10K
+5V
10K
R99 2K
2K
CN51
1
2
R100
C12
100nF
B2B-XH-A
ROOM-CARD
+5V
SWITCH
C5
R4
100nF
R1 10K
1K
B2B-XH-A-R
CN14
1
2
SW1
TSVC-1
SWITCH
220-L
220-N
NTC1
SCK084R72
D6
1N5399
D7
1N5399
D8
1N5399
D9
1N5399
CN52
1
CN17
1
D250
FUSE1
CN21
1
WHITE
CN21'
1
D250
T3.15A/250VAC
~220VAC
RV1
TVR14561*
N
HXF1
CX1
220V_L
L1
LB2271(32mH-0.35A)
2.2nF-250VAC
CY4
CX2
CY5
470nF-275VAC 100nF-275VAC
2.2nF-250VAC
220-L
220-N
CN27
1
D14
+12V
OJE-SS ( H ) -112L ( D )
RLS4148
K4
HXF
CON1
1
CON3
FLZ
1
WHITE
CON2 1
RED
N
+310V
E7
C002
104-630VDC
C23
103-630VDC
R78
47K-2W
R77
D19
US1M( 1A-1000V-75ns )
D20
1.5
Ω
C004
R161
-1/2W
IC9
A6059H
E8
D206
FR106(1A-800V-500ns)
C013
4
5
6
7
2.2nF-250VAC
T1
3
1
102-1000V
C009 R019
47 Ω -1/2W
BCK-6-FE1901H/ 19ES-X58
D008
E9
100 Ω -1206
ZD003
1N4742A(12V-1W)
2.2K
R004
R205
560
+12V
Ω -0805
12V -900mA
CY2
2.2nF-250VAC
ER302(3A-200V-35ns)
CY1
100
R209
Ω -1206
2.2nF-250VAC
E204
1000uF-25V-105 ℃
ZD202
1N4742A(12V-1W)
C4
100nF
R202
C13
1nF
100
1
Ω -1206
R203
ZD001
R206
270 Ω -2W
N001
KTC8050
+15V
15V -100mA
C7
100nF
HS1 H-25*15
INPUT
( 1.5A-5V
OUTPUT
3
) +5V
E207
C22
100nF
IC10
R80
1.5K
C010
1nF
TLP421
CY6
+15V
4.7nF-250V
COMM_TX
COMM_TX
220V_L
FLZ
K2
D4
RLS4148
OJE-SS ( H ) -112L ( D )
+12V
+5V
R90
4.7K
N5
SS8050LT1
R91
4.7K
COMM_RX
COMM_RX
R20
C9
1K
1nF
R13
330 Ω
R19
10K
IC4
TLP851/PC851
IC6
TLP421
IN-OUTCOM
R22
C8
100nF-50V
2K-1/4W
D12
1N4007
R12
E4
100uF-50V-105 ℃
CY3
2.2nF-250VAC
R26
2K-2W
D11 R14 47K-3W
1N4007
ZD4
1N4746A(18V-1W)
R15
47K-3W
COMM
220V_L
CN23'
1
D250
CN23
1
N
5 4 Domestic air conditioner
Circuit diagrams
Sincere Forever
Haier Group
Haier Industrial Park, No.1, Haier Road
266101, Qingdao, China_
Http
:
//www.haier.com
Edited by :
Signed by :
Zou Na
Liu xiang
He shiquang
Approved by: Wu Hongjin
Domestic air conditioner
SERVICE MANAUL
Wall Mounted Type
DC Inverter FREE MATCH N-Series
Model No.
1U18FE2ERA
HSU18VHGL-W
WARNING
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
2014 (Qingdao Haier Air Conditioner General corp. , Ltd)
All rights reserved. Unauthorized copying and distribution is a violation of law
Haier Group
Version : V1 Date : 2014-05-25
Contents
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...........................................................................
15
8. Dimensional drawings...........................................................................
30
9. Conter of gravity ...................................................................................
30
10. Installations.........................................................................................
31
11. Service Diagnosis ...............................................................................
46
12. Performance and cerves diagrams.....................................................
63
13. Sound level .........................................................................................
71
14. Circuit diagrams..................................................................................
72
Domestic air conditioner
1 Introduction
1.1 Model name explanation
Introduction
1 U 1 8 F E 2 E R A
Apply toT1; 20 8 ~2 3 0V 6 0HZ/1ph
DC inverter
Heat pump & R410A refrigerant
Version number
Europe
Platform of outdoor units: F (F platform)
Nominal cooling capacity (18000BTU/h)
Type of outdoor unit : U (normal type)
The maximum combination number
Domestic air conditioner
Introduction
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.
Domestic air conditioner
Introduction
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.
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
For integral units only
Domestic air conditioner
Introduction
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.
Domestic air conditioner
Introduction
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.
Domestic air conditioner
Introduction
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
Caution
Note
Caution
A “note” provides information that is not indispensable, but may nevertheless be valuable to the reader, such as tips and tricks.
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
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.
Domestic air conditioner
2 Specifications
NOMINAL DISTRIBUTION SYSTEM VOLTAGE
P h a s e /
Frequency
V o tl a g e
HZ
V
NOMINAL CAPACITY and NOMINAL INPUT c o o il n g
Capacity rated
Power Consumption(Rated)
E E R / C O P
Annual energy consumption
M o i s t u r e R e m o v a l
TECHNICAL SPECIFICATIONS-UNIT
Dimensions H*W*D
Packaged
Dimensions
H*W*D
W e i g h t
G r o s s w e i g h t
Sound level
/
/
S o u n d
S o u n d p e e s s u r e p o w e r
ELECTRICAL SPECIFICATIONS
N o m i n a l r u n n i n g c u r r e n t
Maximum running current
S t a r it n g c u r r e n t in in lb lb d B d B
Btu/h
Btu
Btu / Btu
Btuh in /³ h
A
A
A
1
60
2 3 0 h e a it n g
17000(4780-13300) 18000(5120-13990)
5222
38
999950
5068
38
6252250 c o o il n g
6 .
65
9.8
8 .
0
2.66×0.94×2.56
3.11×1.33x2.44
94.6
94.6
6 4
/ h e a it n g
6 .
46
10.2
8 .
0
Specification
TECHNICAL SPECIFICATIONS-PARTS
Compressor
Fan
Heat exchanger
T y p e
M o d e l
M o t o r o
Oil type u t p u t
O li c h a r g e v o l u m e
T y p e
M o t o r
A ri o u t p u t lf o w r a t e ( h i g h )
S p e e d ( h i g h l/ o w )
Type
R o w * s t a g e * f ti c h
W gal in
W
/³ h r p m
7 c o o il n g h e a it n g
R o t a r y C o m p r e s s o r
SNB130FGYMC-L1
3072
FV50S
0 .
11
A x i a l f a n
137
77682
950/300
ML finφ 7HI-HX tube
1 * 30 * 1 .
4
Domestic air conditioner
TECHNICAL SPECIFICATIONS-OTHERS
Refrigerant type
Refrigerant charge
Refrigerant circuit
Maximum allowable distance between indoor an outdoor
Maximum allowable level difference
Refrigerant control
Piping connections
(external diameter)
Heat insulation type
Max. piping Length
Max. Level Difference
Chargeless
Amount of Additional Charge of Refrigerant liquid gas drain
International Protection degree lb in
R410a
2.86
82 in 49.2
Capillary in in in
Φ0.02
Φ 0.04
Φ 0.05
Both liquid and Gas pipes in 82 in in g/in
49.2
32.8
65.6
IP 24
Specification
Note: the data are based on the conditions shown in the table below c o o il n g
Indoor: 80.6° F DB/66.2° F W B
Outdoor: 95° F DB/75.2° F WB h e a it n g
Indoor: 68°F D B
P i p i n g l e n g t h
16.4in
3
.
Sensors list
type
Ambient sensor
Suction sensor
Defrosting sensor
D e s c h a r g i n g s e n s o r
Description
Its used for detecti n g t e m p e r a t u r e o f o u t d o o r s i d e
Its used for detecting suction pipe temperature of compressor to adjust gas flowing
Its used for controlling outdoor defrosting at heating mode tI s u s e d f o r c o m p r e s s o r i n c a s e o f o v e r h e a t
Conversation formulae
Kcal/h= KW×860
Btu/h= KW×3414 cfm=m³/min×35.3
Qty
1
1
1
1
8 Domestic air conditioner
Pinping diagrams
4
.
Pinping diagrams
Domestic air conditioner
Operation range
5
.
Operation range
122
104
114.8
109.4
86
68
64.4
50
60.8
68
73.4
F
89.6
86
32
23
19.4
14
77 75.2
68
59
50
41
50 68
°F
86
16.4in
in
Domestic air conditioner
Wiring diagrams
6. Printed Circuit Board Connector Wiring Diagram
Connectors
PCB(1) (Control PCB)
10
11
12
13
14
15
16
17
18
19 s e
1
2
3
4 ir e s
5
6
7
8
9
PCB(2) (module PCB) s e
1
2
3
4
5
6 ir e s P C B c o n n e
P (CN8) c t o r
N (CN9)
LO (CN4)
LI (CN3)
AC_L(CN1)
AC_N(CN2)
P C B c o n n e c t o r
CN1
CN2
CN3
CN8
CN23
CN9
CN10
CN22
CN11
CN17
CN18
CN19
CN20
CN21
CN47
CN24
CN14
CN28
CN25
C o n n e c t
Connector for power N and L
Connector for ground
Connector for DC POWER 15Vand 5V to the module board
Connector for CN9,CN8 on the module board
Connector for fan motor
CN11 Connector for four way valve coil
Connector for thermistors
Connector for communicate between the control board and the module board
Connector for communicate between indoor and outdoor unit
Connector to P and N of the module board
C o n n e c t w w ti h ti h l o l o a d a d
Connector for capacitance board
Connector for reactor
Connector for control board
7 CN5
8
9
CN6
CN7
Connector for the U, V, W wire of the compressor
10
11
CN10
CN11
Connector for communicate between the control board and the module board
Connector for the DC power 5V and 15V form the control 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 Domestic air conditioner
CN49
CN11
CN11
CN15
CN16
CN47
CN17
CN18
CN19
CN20
CN21
Connector Wiring Diagram
CN9 CN10
PCB(1)
CN8
CN36
CN3
CN2
CN1
CN45
12
CN23 CN24 CN25 CN28
Domestic Air Conditioner
CN9
CN7
CN6
CN5
CN8
CN1
CN2
Connector Wiring Diagram
PCB(2)
CN4 CN3 CN10
CN11
13 Domestic Air Conditioner
Functions and control
Wiring diagrams
R(U)
S(V)
C(W)
COMPRESSOR
B W R B
CN11
U V W P N
CN5 CN6 CN7 CN8 CN9
BL
MOUDLE PCB
CN10
CN3
LI
CN1
AC-L
CN2
AC-N
CN4
L0
W W
OR
BL
P
CN28
CAP
CN25
N
B
CN24
MODULE COM
CN43
AC FAN
BL
CN23
MODULE POWER
CAP CAP
AC-L CN2
AC-N CN1
B
W
FUSE1
T25A 250VAC
CN21
B
W
OUTDOOR PCB
CN47
QX
CN19
HW
AC-L OUT
CN10
CN18
CS
CN17
TC
COMB
COMA
N
CN36
W
R
AC-L OUT CN7
CN9
AC-N OUT
AC-N OUT CN6
Y/G
CN8
PE
CN15白
VALVE A CN22 CN11
B
W
REACTOR
M
~
MOTOR
A
CG-A
SUCTION
DEFROST
TEMP.SENSOR
PIPING
A
XG-A
TEMP.SENSOR
TEMP.SENSOR
AMBIENT
TEMP.SENSOR
COMP.
M
ELECTRIC
EXPANSION
M
DC FAN
MOTOR
4-WAY VALVE
Y/G
Domestic air conditioner
Functions and control
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 :
H
Mode e a it n g
Minimun operation frequency
3 6 H z
Maximun operation frequency
9 0 H z
R e f ir g e r a it o n 3 6 H z 8 0 H z
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.
1
2
3
Temperature scope
Wh_F<10.4
Wh_F<17.6
Wh_F<28.4
Frequency limitation
Max_hz8 90HZ
Max_hz7 90HZ
Max_hz4 90HZ
6
7
4
5
Wh_F<41
Wh_F<50
Wh_F<62.6
Wh_F<68
Max_hz5 85HZ
Max_hz1 80HZ
Max_hz2 70HZ
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.
Domestic air conditioner
Functions and control
Cooling/dehumidification mode:
Serial No.
1
2
3
Temperature scope
Wh_F<82.4
Wh_F<89.6
Wh_F<104
Frequency limitation
Max_hz1 46HZ
Max_hz2 72HZ
Max_hz3 80HZ
4
5
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
Δ T= ∑(Δ Ti*Pi ) / ∑ Pi ( Δ Ti=|Tst_i the setting temperature - Tnh_i the indoor environment temperature|; Pi = i the ability of the indoor unit)
Cooling/dehumidification mode:
Δ T <1 = 1 = 2 = 3 >=4
The percentage of the rated frequency P
Heating mode :
Δ T
The percentage of the rated frequency P
Wh_F<118.4
Wh_F ≧ 118.4
50%
<1
50%
80%
= 1
70%
120%
= 2
120%
Max_hz4 65HZ
Max_hz5 46HZ
150%
= 3
150%
160%
>=4
170%
The indoor setting airflow speed
The percentage of the rated frequency Ki
Breeze
60 %
Low
75%
Medium
85%
High
100%
Strong
120%
Quiet
60%
Healthy airflow
60%
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)
Domestic air conditioner
Functions and control
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.
The temperature of the outdoor air ( Ta )
Ta ≥86 ° F
78.8
° F ≤ Ta< 86 ° F
The temperature of the outdoor coil ( Te )
— —
——
Airflow speed
H i g h
Keeping the speed
75.2°F ≤ Ta< 78 .
8 °F
73.4°F ≤ Ta<75.2°F
50°F ≤ Ta<73.4°F
41°F ≤ Ta<50°F
Ta<41°F
— —
——
— —
——
59°F ≤ Te
59°F>Te
M e d i u m
Keeping the speed
L o w
Keeping the speed
Low
Stop
7.1.2.2 The outdoor fan control when heating
The temperature of the outdoor air (Ta)
Ta ≥71.6
°F
66.2
°F ≤ Ta<71.
6 °F
60.8
°F ≤ Ta< 71.6
°F
57.2°F ≤ Ta< 60.8
°F
Ta< 57.2°F
Airflow speed
Low
Keeping the speed
Medium
Keeping the speed
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.
Domestic air conditioner
Functions and control
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.
1 8 Domestic air conditioner
Functions and control
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 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.
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_2 41°F Decreasing slowly
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.
Domestic air conditioner
Functions and control
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)
Domestic air conditioner
Functions and control
7.2 Value of Thermistor
Ambient Sensor, Defrosting Sensor, Pipe sensor
R77°F=10K Ω± 3% B77°F/122°F=3700K ± 3%
76.5017
72.5729
68.8710
65.3815
62.0907
58.9863
56.0565
53.2905
50.6781
48.2099
Min.(K )
132.3678
125.0806
118.2434
111.8256
105.7989
100.1367
94.8149
89.8106
85.1031
80.6728
45.8771
43.6714
41.5851
39.6112
37.7429
35.9739
34.2983
32.7108
31.2062
29.7796
28.4267
27.1431
84.0695
79.6222
75.4384
71.5010
67.7939
64.3023
61.0123
57.9110
54.9866
52.2278
Normal(K )
147.9497
139.5600
131.7022
124.3392
117.4366
110.9627
104.8882
99.1858
93.8305
88.7989
49.6244
47.1666
44.8454
42.6525
40.5800
38.6207
36.7676
35.0144
33.3552
31.7844
30.2968
28.8875
92.3028
87.2775
82.5577
78.1230
73.9543
70.0342
66.3463
62.8755
59.6076
56.5296
Max.(K )
165.2170
155.5754
146.5609
138.1285
130.2371
122.8484
115.9272
109.4410
103.3598
97.6556
53.6294
50.8956
48.3178
45.8860
43.5912
41.4249
39.3792
37.4465
35.6202
33.8936
32.2608
30.7162
-4
-2.2
-0.4
-1.4
-3.2
-5
-6.8
-8.6
-10.4
-12.2
Temp.(( °F ))
-22
-20.2
-18.4
-16.6
-14.8
-13
-11.2
-9.4
-7.6
-5.8
24.8
26.6
28.4
30.2
32
33.8
-14
15.8
17.6
19.4
21.2
23
29.19
29.23
29.28
29.32
29.35
29.39
29.43
29.46
29.52
29.55
29.59
29.62
28.83
28.87
28.90
28.94
28.98
29.01
29.05
29.08
29.12
29.16
Tolerance( °F)
28.51 35.15
28.53
28.56
28.60
35.13
35.11
35.08
28.63
28.67
28.71
28.74
28.76
28.80
35.06
35.04
35.01
34.99
34.95
34.93
34.92
34.88
34.86
34.83
34.79
34.77
34.74
34.72
34.68
34.65
34.63
34.59
34.56
34.52
34.50
34.47
34.43
34.39
34.36
34.32
34.30
34.27
Domestic air conditioner
104
105.8
107.6
109.4
111.2
93.2
95
96.8
98.6
100.4
102.2
82.4
84.2
86
87.8
89.6
91.4
71.6
73.4
75.2
77
78.8
80.6
60.8
62.6
64.4
66.2
68
69.8
50
51.8
53.6
55.4
57.2
59
35.6
37.4
39.2
41
42.8
44.6
46.4
48.2
7.2546
6.9852
6.7273
6.4803
6.2437
6.0170
5.7997
5.5914
5.3916
5.2001
5.0163
11.7102
11.2172
10.7475
10.3000
9.8975
9.5129
9.1454
8.7942
8.4583
8.1371
7.8299
7.5359
20.0176
19.1149
18.2580
17.4442
16.6711
15.9366
15.2385
14.5748
13.9436
13.3431
12.7718
12.2280
29.2545
27.8708
26.5605
25.3193
24.1432
23.0284
21.9714
20.9688
6.9673
6.7008
6.4459
6.2021
5.9687
5.7454
5.5316
5.3269
5.1308
4.9430
4.7630
11.3267
10.8634
10.4216
10.0000
9.5974
9.2132
8.8465
8.4964
8.1621
7.8428
7.5377
7.2461
19.0621
18.2270
17.4331
16.6782
15.9601
15.2770
14.6268
14.0079
13.4185
12.8572
12.3223
11.8126
27.5519
26.2858
25.0851
23.9462
22.8656
21.8398
20.8659
19.9409
22
6.6854
6.4222
6.1707
5.9304
5.7007
5.4812
5.2712
5.0704
4.8783
4.6944
4.5185
10.9459
10.5114
10.0964
9.7000
9.2980
8.9148
8.5496
8.2013
7.8691
7.5522
7.2498
6.9611
18.1358
17.3646
16.6305
15.9315
15.2657
14.6315
14.0271
13.4510
12.9017
12.3778
11.8780
11.4011
25.9250
24.7686
23.6704
22.6273
21.6361
20.6939
19.7982
18.9463
Functions and Control
29.68 34.23
30.09
30.02
29.97
29.89
29.82
29.75
29.68
29.61
29.53
29.46
29.39
30.54
30.60
30.65
30.65
30.63
30.56
30.49
30.43
30.36
30.29
30.24
30.16
30.00
30.06
30.09
30.15
30.18
30.24
30.27
30.33
30.36
30.42
30.45
30.51
29.71
29.75
29.79
29.84
29.88
29.93
29.97
33.87
33.93
34.00
34.05
34.12
34.20
34.25
34.32
34.39
34.45
34.52
33.44
33.40
33.35
33.35
33.37
33.34
33.49
33.55
33.62
33.67
33.75
33.80
33.93
33.89
33.85
33.82
33.78
33.73
33.69
33.66
33.62
33.57
33.53
33.49
34.20
34.16
34.12
34.09
34.05
34.02
33.96
Domestic air conditioner
181.4
183.2
185
186.8
188.6
170.6
172.4
174.2
176
177.8
179.6
159.8
161.6
163.4
165.2
167
168.8
149
150.8
152.6
154.4
156.2
158
138.2
140
141.8
143.6
145.4
147.2
127.4
129.2
131
132.8
134.6
136.4
113
114.8
116.6
118.4
120.2
122
123.8
125.6
1.6913
1.6409
1.5923
1.5454
1.5000
1.4562
1.4139
1.3730
1.3335
1.2953
1.2583
2.4591
2.3815
2.3068
2.2347
2.1652
2.0983
2.0337
1.9714
1.9113
1.8533
1.7974
1.7434
3.6601
3.5374
3.4195
3.3060
3.1969
3.0919
2.9909
2.8936
2.8000
2.7099
2.6232
2.5396
4.8400
4.6708
4.5083
4.3524
4.2026
4.0588
3.9206
3.7878
1.5528
1.5051
1.4592
1.4149
1.3721
1.3308
1.2910
1.2525
1.2153
1.1794
1.1448
2.2840
2.2098
2.1383
2.0695
2.0032
1.9393
1.8778
1.8186
1.7614
1.7064
1.6533
1.6021
3.4416
3.3227
3.2085
3.0989
2.9935
2.8922
2.7948
2.7012
2.6112
2.5246
2.4413
2.3611
4.5905
4.4252
4.2666
4.1145
3.9686
3.8287
3.6943
3.5654
23
1.4243
1.3794
1.3360
1.2942
1.2540
1.2151
1.1776
1.1415
1.1066
1.0730
1.0405
2.1195
2.0486
1.9803
1.9147
1.8516
1.7908
1.7324
1.6761
1.6219
1.5697
1.5194
1.4710
3.2332
3.1183
3.0079
2.9021
2.8005
2.7029
2.6092
2.5193
2.4328
2.3498
2.2700
2.1932
4.3500
4.1887
4.0342
3.8862
3.7443
3.6084
3.4780
3.3531
29.32
Functions and Control
34.59
26.74
26.65
26.56
26.47
26.38
26.29
26.20
26.11
26.02
25.92
25.83
27.75
27.68
27.59
27.52
27.43
27.34
27.27
27.18
27.09
27.00
26.91
26.82
28.72
28.63
28.56
28.49
28.40
28.33
28.26
28.17
28.09
28.00
27.93
27.84
29.25
29.17
29.10
29.03
28.94
28.87
28.80
36.88
36.95
37.04
37.11
37.18
37.27
37.35
37.42
37.51
37.58
37.67
35.98
36.05
36.12
36.21
36.28
36.36
36.43
36.50
36.57
36.64
36.73
36.81
35.13
35.20
35.28
35.33
35.40
35.47
35.55
35.62
35.69
35.76
35.83
35.91
34.65
34.72
34.79
34.86
34.92
34.99
35.06
Domestic air conditioner
0.9756
0.9490
0.9232
0.8983
0.8741
0.8507
0.8281
0.8061
0.7848
0.7641
0.7441
0.7247
1.2226
1.1880
1.1546
1.1223
1.0910
1.0607
1.0314
1.0030
0.7059
0.6877
0.6700
0.6528
0.6361
0.6200
0.6043
0.5891
0.5743
0.5600
0.5460
0.5325
215.6
217.4
219.2
221
222.8
224.6
204.8
206.6
208.4
210.2
212
213.8
190.4
192.2
194
195.8
197.6
199.4
201.2
203
237.2
239
240.8
242.6
244.4
246.2
226.4
228.2
230
231.8
233.6
235.4
248 0.5194 0.4597 0.4066
0.8806
0.8558
0.8319
0.8088
0.7863
0.7646
0.7436
0.7233
0.7036
0.6845
0.6661
0.6482
1.1113
1.0789
1.0476
1.0174
0.9882
0.9599
0.9326
0.9061
0.6308
0.6140
0.5977
0.5820
0.5667
0.5518
0.5374
0.5235
0.5100
0.4968
0.4841
0.4717
0.7941
0.7711
0.7489
0.7275
0.7067
0.6867
0.6672
0.6484
0.6303
0.6127
0.5957
0.5792
1.0092
0.9789
0.9497
0.9215
0.8942
0.8679
0.8424
0.8179
0.5632
0.5478
0.5328
0.5183
0.5043
0.4907
0.4775
0.4648
0.4524
0.4404
0.4288
0.4175
Functions and Control
25.74 37.74
24.98
24.87
24.78
24.67
24.58
24.48
24.39
24.28
24.19
24.08
23.97
23.88
25.65
25.56
25.45
25.36
25.27
25.16
25.07
23.77
23.67
23.56
23.47
23.36
23.25
23.14
23.04
22.93
22.82
22.71
22.60
22.50
38.39
38.48
38.55
38.64
38.73
38.80
38.89
38.98
39.06
39.15
39.24
39.33
37.83
37.90
37.99
38.07
38.16
38.23
38.32
39.42
39.49
39.58
39.67
39.76
39.85
39.94
40.01
40.10
40.19
40.28
40.37
40.46
24 Domestic air conditioner
Functions and control
Discharging Sensor
R176 F =50K Ω± 3%
B77/176°F=4450K ± 3%
Temp.(( °F)) Max.(K Ω ) Normal(K Ω ) Min.(K Ω )
-22 14646.0505 12061.7438 9924.4999 26.67 36.41
3699.5139
3480.9407
3276.5302
3085.2854
2906.2851
2738.6777
2581.6752
2434.5487
2296.6230
2167.2730
2045.9191
1932.0242
1825.0899
1724.6540
1630.2870
1541.5904
1458.1938
1379.7528
1305.9472
13654.1707
12735.8378
11885.1336
11096.6531
10365.4565
9687.0270
9057.2314
8472.2852
7928.7217
7423.3626
6953.2930
6515.8375
6108.5393
5729.1413
5375.5683
5045.9114
4738.4141
4451.4586
4183.5548
3933.3289
15.8
17.6
19.4
21.2
23
24.8
26.6
28.4
30.2
32
33.8
35.6
37.4
39.2
41
42.8
44.6
46.4
48.2
-0.4
-1.4
-3.2
-5
-6.8
-8.6
-10.4
-12.2
-14
-20.2
-18.4
-16.6
-14.8
-13
-11.2
-9.4
-7.6
-5.8
-4
-2.2
2716.0828
2564.6945
2422.6139
2289.2164
2163.9230
2046.1961
1935.5371
1831.4826
1733.6024
1641.4966
1554.7931
1473.1460
1396.2333
1323.7551
1255.4324
1191.0048
1130.2298
1072.8813
1018.7481
9290.2526
8700.6388
8152.2338
7641.8972
7166.7474
6724.1389
6311.6413
5927.0206
5568.2222
5233.3554
4920.6791
4628.5894
4355.6078
4100.3708
3861.6201
3638.1938
3429.0191
3233.1039
3049.5312
2877.4527
3171.3148
2989.2460
2818.6731
2658.8058
2508.9126
2368.3158
2236.3876
2112.5459
1996.2509
1887.0018
1784.3336
1687.8144
1597.0431
1511.6468
1431.2787
1355.6163
1284.3593
1217.2282
1153.9626
11267.8730
10531.3695
9847.7240
9212.8101
8622.8491
8074.3787
7564.2244
7089.4741
6647.4547
6235.7109
5851.9864
5494.2064
5160.4621
4848.9963
4558.1906
4286.5535
4032.7098
3795.3910
3573.4260
3365.7336
27.19
27.21
27.25
27.27
27.30
27.32
27.36
27.39
27.41
27.45
27.46
27.50
27.54
27.55
27.59
27.63
27.66
27.68
27.72
26.96
26.98
27.01
27.03
27.05
27.09
27.10
27.14
27.16
26.69
26.73
26.74
26.76
26.78
26.82
26.83
26.85
26.89
26.90
26.92
36.14
36.12
36.10
36.10
36.09
36.06
36.05
36.03
36.01
36.00
35.98
35.96
35.94
35.91
35.89
35.87
35.85
35.83
35.82
36.27
36.27
36.25
36.23
36.21
36.21
36.19
36.18
36.16
36.39
36.39
36.37
36.36
36.36
36.34
36.34
36.32
36.30
36.30
36.28
Domestic air conditioner
50
Functions and control
1236.4792 1094.3200 967.6334 27.75 35.80
624.3328
593.5446
564.4275
536.9865
511.0105
486.4151
463.1208
441.0535
420.1431
400.3242
381.5350
363.7176
346.8176
330.7839
315.5682
301.1254
287.4128
274.3905
262.0206
250.2676
239.0983
228.4809
218.3860
208.7855
199.6531
190.9639
182.6945
174.8228
167.3280
160.1904
153.3914
146.9136
1171.0715
1109.4661
1051.4226
996.7169
945.1404
896.4981
850.6086
807.3024
766.4212
727.8172
691.3524
656.8979
84.2
86
87.8
89.6
91.4
73.4
75.2
77
78.8
80.6
82.4
93.2
95
96.8
98.6
100.4
102.2
104
105.8
107.6
109.4
122
123.8
125.6
127.4
129.2
111.2
113
114.8
116.6
118.4
120.2
60.8
62.6
64.4
66.2
68
69.8
71.6
51.8
53.6
55.4
57.2
59
563.6604
536.6540
511.0760
486.9352
464.0500
442.3499
421.7683
402.2430
383.7151
366.1295
349.4341
333.5801
318.5216
304.2151
290.6199
277.6976
265.4119
253.7288
242.6161
232.0436
221.9825
212.4060
203.2887
194.6066
186.3369
178.4584
170.9508
163.7951
156.9733
150.4683
144.2641
138.3454
1038.0743
985.0146
934.9440
887.6792
843.0486
800.8922
761.0603
723.4134
687.8205
654.1596
622.3161
592.1831
508.4261
484.7796
462.3510
441.1516
421.0258
401.9146
383.7626
366.5175
350.1301
334.5542
319.7460
305.6645
292.2709
279.5286
267.4031
255.8620
244.8745
234.4118
224.4465
214.9529
205.9065
197.2844
189.0648
181.2273
173.7524
166.6217
159.8181
153.3249
147.1268
141.2090
135.5577
130.1598
919.3533
873.7359
830.6210
789.8583
751.3077
714.8380
680.3265
647.6580
616.7252
587.4271
559.6694
533.3634
28.18
28.22
28.24
28.27
28.31
28.35
28.38
28.42
28.45
28.49
28.53
28.58
28.62
28.65
28.69
28.72
28.76
28.80
28.83
28.87
28.92
28.96
28.99
29.03
29.07
29.12
29.16
29.19
29.25
29.28
29.32
29.35
27.77
27.81
27.84
27.88
27.91
27.93
27.97
28.00
28.04
28.08
28.11
28.15
35.47
35.46
35.42
35.40
35.37
35.35
35.31
35.29
35.26
35.24
35.20
35.17
35.15
35.11
35.08
35.06
35.02
34.99
34.95
34.93
34.90
34.86
34.83
34.79
34.77
34.74
34.70
34.66
34.63
34.59
34.56
34.52
35.76
35.74
35.73
35.71
35.67
35.65
35.64
35.60
35.58
35.56
35.53
35.51
Domestic air conditioner
131
Functions and control
140.7403 132.6980 125.0027 29.41 34.48
82.1303
78.9116
75.8343
72.8916
70.0770
67.3844
64.8080
62.3423
59.9821
57.7223
55.5583
53.4856
51.5000
49.7063
47.9835
46.3286
44.7385
43.2105
41.7386
40.3241
38.9643
37.6569
36.3996
35.1903
34.0269
32.9075
31.8302
30.7933
29.7950
28.8337
27.9078
27.0160
134.8559
129.2457
123.8956
118.7926
113.9241
109.2784
104.8443
100.6112
96.5692
92.7088
89.0211
85.4976
165.2
167
168.8
170.6
172.4
154.4
156.2
158
159.8
161.6
163.4
174.2
176
177.8
179.6
181.4
183.2
185
186.8
188.6
190.4
203
204.8
206.6
208.4
210.2
192.2
194
195.8
197.6
199.4
201.2
141.8
143.6
145.4
147.2
149
150.8
152.6
132.8
134.6
136.4
138.2
140
78.6615
75.6668
72.8004
70.0561
67.4283
64.9115
62.5006
60.1906
57.9770
55.8552
53.8210
51.8706
50.0000
48.2057
46.4842
44.8323
43.2468
41.7248
40.2604
38.8545
37.5045
36.2078
34.9622
33.7653
32.6151
31.5096
30.4467
29.4246
28.4417
27.4961
26.5864
25.7110
127.3081
122.1630
117.2504
112.5589
108.0776
103.7961
99.7046
95.7939
92.0553
88.4805
85.0614
81.7908
75.2715
72.4902
69.8249
67.2703
64.8213
62.4731
60.2211
58.0609
55.9885
53.9998
52.0912
50.2591
48.5000
46.7083
44.9911
43.3452
41.7672
40.2540
38.7996
37.4048
36.0668
34.7831
33.5513
32.3689
31.2338
30.1438
29.0970
28.0915
27.1254
26.1970
25.3048
24.4470
120.0746
115.3645
110.8618
106.5564
102.4388
98.5000
94.7315
91.1253
87.6735
84.3690
81.2048
78.1744
29.97
30.02
30.06
30.11
30.15
30.20
30.24
30.29
30.34
30.38
30.43
30.47
30.47
30.47
30.40
30.33
30.27
30.20
30.15
30.07
30.00
29.95
29.88
29.80
29.73
29.66
29.61
29.53
29.46
29.39
29.32
29.25
29.44
29.48
29.53
29.57
29.62
29.66
29.70
29.75
29.79
29.84
29.88
29.93
33.98
33.94
33.91
33.85
33.82
33.78
33.73
33.69
33.66
33.60
33.57
33.51
33.51
33.53
33.60
33.62
33.71
33.78
33.84
33.91
33.96
34.03
34.09
34.14
34.21
34.29
34.34
34.41
34.47
34.54
34.59
34.66
34.45
34.41
34.38
34.34
34.30
34.27
34.21
34.18
34.14
34.12
34.07
34.02
Domestic air conditioner
212
Functions and control
26.1569 24.8685 23.6222 29.17 34.74
25.3290
24.5311
23.7620
23.0205
22.3055
21.6159
20.9508
20.3091
19.6899
19.0924
18.5157
17.9590
17.4214
16.9023
16.4010
15.9167
15.4489
14.9968
14.5599
14.1376
13.7294
13.3347
12.9531
12.5840
12.2270
11.8817
11.5475
11.2242
10.9112
10.6084
10.3151
10.0312
9.7563
9.4901
9.2322
8.9824
8.7404
8.5059
8.2787
222.8
224.6
226.4
228.2
230
231.8
233.6
213.8
215.6
217.4
219.2
221
246.2
248
249.8
251.6
253.4
235.4
237.2
239
240.8
242.6
244.4
255.2
257
258.8
260.6
262.4
264.2
266
267.8
269.6
271.4
273.2
275
276.8
278.6
280.4
282.2
22.8291
22.0662
21.3323
20.6261
19.9465
19.2924
18.6626
18.0563
17.4723
16.9098
16.3680
15.8458
15.3427
14.8577
14.3902
13.9394
13.5047
13.0855
12.6811
12.2909
11.9144
11.5510
11.2003
10.8617
10.5348
10.2191
9.9142
9.6197
9.3352
9.0602
8.7945
8.5378
8.2895
8.0495
7.8175
7.5931
7.3760
7.1660
6.9629
24.0574
23.2765
22.5245
21.8002
21.1025
20.4303
19.7825
19.1582
18.5564
17.9761
17.4166
16.8769
16.3564
15.8542
15.3696
14.9020
14.4506
14.0149
13.5942
13.1879
12.7955
12.4165
12.0503
11.6965
11.3545
11.0240
10.7046
10.3957
10.0970
9.8082
9.5288
9.2586
8.9971
8.7441
8.4993
8.2623
8.0329
7.8108
7.5958
284 8.0584 7.3875 6.7664
29.10
29.03
28.96
28.89
28.81
28.74
28.67
28.60
28.53
28.44
28.36
28.29
28.22
28.13
28.06
27.99
27.91
27.82
27.75
27.66
27.59
27.50
27.43
26.51
26.44
26.35
26.26
26.17
26.08
26.01
27.36
27.27
27.18
27.10
27.01
26.94
26.85
26.76
26.69
26.60
34.79
34.86
34.93
34.99
35.06
35.13
35.19
35.26
35.33
35.40
35.47
35.53
35.60
35.67
35.74
35.82
35.89
35.94
36.01
36.09
36.16
36.23
36.30
37.11
37.18
37.26
37.33
37.40
37.47
37.56
36.37
36.45
36.52
36.59
36.66
36.73
36.81
36.88
36.95
37.04
Domestic air conditioner
Dimensinal drawings
8.Dimensional drawings
2.85
2.66
0.94
0.24
0.18
0.22
12.7
3/4
2.66
9.Center of gravity
0.84
2.66
1.00
0.94
0.39
Domestic air conditioner
System configuration
Installation Manual of Room Air Conditioner
Preparation
Necessary Tools for Installation
●
●
●
●
●
●
Hammer
Nipper
Hacksaw
Hole core drill
Gas leakage detector or soap-and-water solution
●
●
●
●
●
●
Torque wrench
(0.67 in,0.87in ,1.02in)
Pipe cutter
Flaring tool
Knife
Measuring tape
Reamer
Power Source
● All wiring to the unit must be in accordance with the National Electric code and local ordinances.
Selection of Installation Place
Indoor 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.
Place where the distance of more than lm from televisions, radios, wireless apparatuses and fl uorescent lamps 3 feet or approximately.
In the case of fi xing the remote controller on a wall, place where the indoor unit can receive signals when the fl uorescent lamps in the room are in use.
●
●
●
●
Outdoor Unit - Select a location that is
Less affected by rain or direct sunlight and is sufficiently ven tilated.
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.
A distance marked is available as illustrated in the below fi gure.
Drawing for the installation of indoor and outdoor units
The models adopt HFC free refrigerant R410A
Attention must be paid to the pitch of drain hose more than 5cm
( 2 inches ) more than
10cm
(4 inches)
G
Optional parts for piping
E
F
G
A
B
C
D
Non-adhesive tape
Adhesive tape
Saddle (L.S) with screws
Connecting electric cable for indoor and outdoor
Drain hose
Insulating material
Piping hole cover
Arrangement of piping directions
Rear left
Left Rear right
Right
Below more than 10cm
( 4 inches )
A
F
C
Floor fi xing dimensions of the outdoor unit
X
Model
Y X
Z
Dimensions(inches) x y z more than10cm
( 4 inches ) more than10cm
( 4 inches )
●
●
The marks from
G in the fi
A to gure are the name of the parts.
The distance between the indoor unit and the fl oor should be more than 2m or 6 feet.
more than 60cm
( 24 inches )
D
E
HSU12VHGL-W 5 1/2 19 2/3 10 1/16
Fixing of outdoor unit
● Fix the unit to concrete or block
(10mm) securely.
●
● with bolts
When fi tting the unit to wall surface, roof or rooftop, fi x the unit securely in consideration of earthquake and strong wind.
If vibration may affect the house, fi x the unit by attaching a vibration-proof mat.
more than 15cm
( 5 7/8 inches )
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
30
Domestic air conditioner
Accessory parts
Remote controller (1)
AAA dry battery (2)
Mounting plate (1)
Plastic cap (4)
Ø4X25 Screw (4)
Model
Drain hose (1)
Cushion (4)
Drain-elbow (1)
Pipe supporting plate (1)
Selection of pipe
Liquid pipe (Ø) Gas pipe (Ø)
HSU18VHGL-W 6.35mm (1/4") 12.7mm (1/2")
Installation
2 Making a Hole on the Wall and Fitting the Piping Hole Cover
●
●
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
Wall hole
ØBmm
Pitch downward for drainage
09k/12k : B= 60mm(2 3/8 inches)
18k/24k : B=70mm(2 3/4 inches)
Indoor side
(Section of wall hole)
Outdoor side
Thickness of wall
G Piping hole pipe
NOTE : The thickness of the pipe must be 0.8mm(1/16”) at least.
Indoor unit
1 Fitting of the Mounting Plate and Positioning of the wall Hole
When the mounting plate is fi rst fi xed
1. Carry out, based on the wall studs or lintels, a proper leveling for the plate to be fi xed 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
B= 60mm
A=145mm
B= 70mm
A=125mm
B= 60mm
A=145mm
3 Installation of the Indoor Unit
Drawing of pipe
[ 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 on the front side, then connect them.
3. Coat the fl aring seal face with refrigerant oil and connect pipes.
Cover the tubing connection with insulation materials closely, and with adhesive tape.
Indoor/outdoor electric cable
Lid for right piping
Lid for under piping pipe
Lid for left piping
Insulation material
Drain hose
Piping
Pipe supporting plate
Fix with adhesive tape
● 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.
Fixing the indoor unit body
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.
●
●
Hang the unit body onto the upper notches of the mounting plate. Move the body from side to side to verify its secure fi xing.
In order to fi x the body onto the mounting plate,hold up the body from the underside and then put it down perpendicularly.
Unloading of indoor unit body mounting plate
● When you unload the indoor unit,please use your hand to raise the body , then lift the bottom of the body outward slightly and lift the unit until it leaves the mounting plate. agraffe mounting plate
Domestic air conditioner
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.
When connecting the cable after installing the indoor unit
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.
When connecting the cable before installing the indoor unit
●
●
●
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.
Note When connecting the cable, con fi rm the terminal number of indoor and outdoor units carefully. If wiring is not correct, the unit will not operate properly and could cause a defect.
Indoor unit
Outdoor unit
4wire 14AWG
(4G0.75mm )
Control Wiring
Power
Wiring
{
HSU18VHGL-W
Power cable: 3wire with ground 14AWG
1. If the supply cord is damaged, it must be replaced by the manufacturer or its service agent or a similar quali fi ed 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
T.3.15A/250VAC (Indoor), T.25A/250VAC (Outdoor).
3. The wiring method should be in line with the local wiring standard.
4. Use an HVACR circuit breaker or time delay fuse.
Outdoor unit
1 Installation of Outdoor Unit
Installation
Install according to the instructions on the 1st page of this manual
2 Connection of pipes
●
●
●
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 fi rst makes working easier.
Ensure the interconnecting tubing is approved for R410A.
Half union
Spanner
Flare nut
Forced fastening without careful centering may damage the threads and cause a leakage of gas.
Torque wrench
Pipe Diameter( ǿ )
Liquid side6.35mm(1/4")
Fastening torque
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
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.
CAUTION
Outdoor unit
B
A
Indoor unit
B
A
Indoor unit
Outdoor unit
Outdoor unit
A
B
Oil trap
Indoor unit
•
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)
Cutting and Flaring Work of Piping
●
●
Pipe cutting is carried out with a pipe cutter and burs must
After inserting the fl are nut, fl aring work is carried out.
be removed.
A
Flare tool for R410A
Clutch-type
0~0.5mm
0~1/51 inch
Conventional fl are tool clutch-type(Rigid-type) Wing-nut type (Imperial-type)
1.0~1.5mm
3/76 ~1/17 inch
1.5~2.0mm
1/17 ~1/8 inch
Flare tooling die
1.Cut pipe 2.Remove burs
3.Insert the fl are nut
4.Flare pipe
Correct Incorrect
Lean Damage of fl are Crack Partial Too outside
Domestic air conditioner
Installation
3 Connection 1 Power Source Installation
●
●
●
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 defect in the unit.
Fix the cable with a clamp.
●
●
●
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 earth leakage breaker.(GFCI)
For installation in other places, use an HVACR circuit breaker of time delay fuse.
4 Attaching Drain-Elbow
● If the drain-elbow is used, please attach as shown in figure.
(Note: Only for heat pump unit.)
5 Purging Method:To use vacuum pump
1.
Detach the service port’s cap of 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 and connect the vacuum pump to the center port of the manifold.
2.
Open the handle on the low side of the gauge manifold and operate vacuum pump.
3.
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.
4.
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.
5.
No gas leakage? Go to step 6.
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 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.
2 On Drainage
●
●
Please install the drain hose and ensure downward flow.
Please don’t do the drainage as shown below.
Less than
5cm
It becomes high midway.
The end is immersed in water.
It waves.
The gap with the ground is too small.
There is the bad smell from a ditch
●
●
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 to the hose to prevent condensation.
con fi rm that drainage apply insulation to
■ Refrigerant charge label
Contains fluorinated greenhouse gases covered by the Kyoto Protocol
R410A
1= kg
2
1
2=
1+2= kg kg
A
B
C
D
Step 2.
Open
F E
6.
Detach the charge hose valve completely.
from the service port, open 2-way valve and 3-way
7.
To prevent the gas leakage, replace the service port and valve caps.
8.
After attaching the caps, check for leakage around the caps.
Step 1.
2-way valve Liquid Side
3-way valve Gas Side
Tube(for R410A)
Gaugemanifold(for R410A)
Gauge manifold
Vacuum pump
Step 3.
Close
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
Step 4.
2-way valve
3-way valve
Step 6.
2-way valve
3-way valve
●
●
Open 90 O
2-way valve 3-way valve
Step 7.
Service port cap
CAUTION
2-way valve
3-way valve
Valve cap
Valve cap
If the refrigerant of the air conditioner leaks, it is necessary to discharge all the refrigerant. Repair the leak, vacuum the unit then charge the liquid refrigerant into air conditioner according to the amount marked on the name plate.
Please do not let other cooling medium, except speci fi ed one (R410A), or air enter into the cooling circulation system. This could cause high pressure and could cause a leak and lead to personal injuries.
■ Check for Installation and Test Run
■ Please kindly explain to our customers how to operate through the instruction manual.
Check Items for Test Run Put check mark in boxes
Gas leak from interconnecting tubing?
Installation is on the interconnecting tubing?
Are the connecting wirings of indoor and outdoor fi rmly inserted to the terminal block?
Is the connecting wiring of indoor and outdoor fi rmly fi xed?
Is drainage securely carried out?
Is the ground wire securely connected?
Is the indoor unit securely fi xed?
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?
Domestic air conditioner
Connector Wiring Diagram
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.
11.2 Parameter of primary electronic appliance
NO Nam e Param eter Picture
1 Com pressor
Rated voltage:220-230V
Rated current:8.4A
Rated frequency:50/60H z
Resistance:0.93
Ω
2 Fan m otor
Rated voltage:220-230V
Rated current:0.2A
Rated frequency:50/60H z
Resistance:14.5
Ω
3 Reactor
Rated voltage:29.4V±10%
Rated current:18.0A
Rated frequency:50H z
Rated ductance:5.2m H±10%
4 4-way valve
Rated voltage:230V
Rated current:0.1A
Rated frequency:50H z
Rated inductance:2.1K
Ω
Domestic Air Conditioner
34
Connector Wiring Diagram
11.3.Problem Symptoms and Measures
Sympt o m
None of the units operates
Operation sometimes stops.
Check Item Details of Measure
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
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.
Diagnosis by service port pressure and operating current.
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.
Check for insufficient gas.
35
Domestic Air Conditioner
11.4 Error Codes and Description indoor display
Code indication
Indoor displaying panel code indication
Outdoor
(LED1 flash times) fault description
Indoor and
Outdoor
Indoor Malfunction
Outdoor
Malfunction
E7
F22
F3
F19
F4
F8
F21
F7
F6
F25
F11
F28
F2
E1
E2
E 4
E14
F12
F1
F23
E9
15
18
19
24
9
10
11
12
13
--
--
--
--
1
2
3
4
6
8
25
21
Seivice diagnosis
Reference
Page
Communication fault between indoor and outdoor units
Room temperature sensor failure
Heat-exchange sensor failure
I n d o o r E E P R O M e rr o r
Indoor fan motor malfunction
Outdoor EEPROM error
T h e p r o t e c it o n o f I P M
Overcurrent protection of AC electricity for the outdoor model
Communication fault between the IPM and outdoor PCB
Power voltage is too high or low
Overheat protection for Discharge temperature
Outdoor DC fan motor fault
Defrost temperature sensor failure
Suction temperature sensor failure
Ambient temperature sensor failure
Discharge temperature sensor failure
Overcurrent of the compressor
Overcurrent protection for single-phase of the compressor
Page .
Page .
Page .
P a g e
P a g e
Page .
Page.
Page .
Page .
.
.
48
38
38
39
Page .
40
Page .
50
39
43
44
45
Page .
47
Page .
42
Page .
38
Page .
38
Page .
38 deviate from the normal for the compressor Page .
50
Loop of the station detect error Page .
50
Page .
44
Page .
46
44
High work-intense protection Page .51
3 6 Domestic air conditioner
11.4.1 Thermistor or Related Abnormality
Indoor display
Outdoor display
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
Seivice diagnosis
Method of malfunction tection
The temperatures detected by the thermistors are used to determine thermistor errors
Malfunction detection conditions
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
*Thermistor resistance check
■ 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.
Check the connector onnection
NO
Is it normal? Correct the connection
YES
Thermistor resistance check
NO
Is it normal?
Replace the thermistor
YES
Replace the indoor unit PCB
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.
37 Domestic air conditioner
11.4.2 EEPROM abnormal
Indoor Display outdoor display
Method of malfunction detection
E4: indoor EEPROM error
F12: Outdoor EEPROM error; Outdoor LED1 flash 1 times
The Data detected by the EEPROM are used to determine MCU
Malfunction detection conditions
Supposed causes
Troubleshooting when the data of EEPROM is error or the EEPROM is damaged
Seivice diagnosis
■ 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
38 Domestic air conditioner
11.4.3 Indoor fan motor malfunction
Indoor Display E14
Seivice diagnosis
Decision
Conditions
Supposed ■ Operation halt due to breaking of wire inside the fan motor .
■ 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 Domestic air conditioner
Turn off power supply and rotate fan by hand
NO
Does fan rotate smoothly?
Y ES
Turn power ON and operate fan
Replace fan motor
N O
Does it rotate?
Seivice diagnosis
Turn off power supply and disconnect fan motor connector, then turn power ON
Y ES Check output of fan motor connector
Stop fan motor
Is rotation number command pulse generated?
N O
Replace indoor fan motor
PCB
Y ES
Is motor power voltage DC310V g e n e r a t e d ?
Y ES
Is motor control power voltage DC15V generated?
Y ES
Is rotation number command voltage
DC1 ~ 6V generated?
NO
Replace indoor unit PCB
NO
Replace indoor unit PCB
Y ES
Replace fan motor
N O
Replace indoor unit PCB
40 Domestic air conditioner
Seivice diagnosis
11.4.4 Outdoor DC fan motor fault
Outdoor diplay LED1 flash 9 times
Method of malfunction detection
Malfunction detection conditions
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
Supposed causes
■ DC fan motor protection dues to the DC fan motor faulty
■ DC fan motor protection dues to faulty PCB
Troubleshooting
* Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Check whether Terminal on the outdoor mainboard is well inserted.
NO Reinsert the terminals
Is it normal?
Y ES
Electrify the machine again and turn it on in the Cool state with the remote controller. check whether motor can run ?
Y ES
Measure the voltage between 3 and 6 of the terminal about 0-5v.
NO
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.
Is it normal?
N O the motor of the outdoor unit is damaged and needs replacing.
Y
Y ES
ES
Is it normal?
N O
The mainboard of the outdoor unit is damaged and needs replacing.
Domestic air conditioner
11.4.5 IPM protection
Outdoor diplay LED1 flash 2 times
Method of malfunction detection
Seivice diagnosis
IPM protection is detected by checking the compressor running condition and so on
Malfunction detection conditions
Supposed causes
Troubleshooting
■ 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
■ Compressor wiring disconnected
* Caution
Be sure to turn off power switch before connect or disconnect connector, or else parts damage may be occurred.
.
Electrify the machine again and turn it on with the remote controller,If malfunctions are reported before or upon the compressor being started up,
YES
IPM Module is damaged and needs replacing.
Malfunction unsolved
NO
The compressor is started normally, but malfunctions are reported after it has run for some time.
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.
Domestic air conditioner
Seivice diagnosis
11.4.6 Over-current of the compressor
Outdoor diplay LED1 flash 3 or 24 or 25 times
Method of malfunction detection
Malfunction detection conditions
Supposed causes
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
■ Faulty IPM Module
■ Faulty compressor
■ Faulty power supply
* Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred..
.
Electrify the machine again and turn it on with the remote controller, If malfunctions are reported before or upon the compressor being started up,
YES
IPM Module is damaged and needs replacing.
NO
The compressor is started normally, but malfunctions are reported after it has run for some time. Check the power supply is too low or too high
NO
NO the system may have been over or under charged with gas, which can be judged through the pressure of the measuring system.
Y ES
Repair the power supply
Domestic air conditioner
Seivice diagnosis
11.4.7 The communication fault between IPM and outdoor PCB
Outdoor diplay LED1 flash 4 times
Method of malfunction detection
Malfunction detection conditions
Supposed causes
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 wiring disconnected
* Caution
Be sure to turn off power switch before connect or disconnect connector, or else parts damage may be occurred
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?
NO 1) Pull out and reinsert the terminals.
2) Replace connected wire
Malfunction unsolved
YES
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,
YES
Replace the outdoor IPM module with a new one.
NO
Replace the outdoor mainboard with a new one
Domestic air conditioner
11.4.8 Power Supply Over or under voltage fault
Outdoor diplay LED1 flash 6 times The power supply is over voltage
Method of malfunction detection
Malfunction detection conditions
Supposed causes
Seivice diagnosis
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
Troubleshooting
■ Supply voltage not as specified.
■ The IPM module is broken.
■ The outdoor PCB is broken.
* Caution
Be sure to turn off power switch before connect or disconnect connector, or else parts damage may be occurred.
Electrify the machine again and turn it on with the remote controller. Check whether the compressor is started normally
Is it ok?
N O
Y ES
Test the outdoor power supply
(+310VDC) with a multimeter.
check whether the power is >150 V or <390V?
NO
Y ES
~230 is ok?
NO
This question may be caused by the power. Repair the power supply.
Y ES
Maybe there is some disturbance
Change the IPM module
Change the IPM module
Domestic air conditioner
11.4.9 Overheat Protection For Discharge Temperature
Outdoor diplay LED1 flash 8 times
Method of malfunction detection
Malfunction detection conditions
Supposed causes
Seivice diagnosis
The Discharge temperature control is checked with the temperature being detected by the Discharge pipe thermistor when the compressor discharge temperature is above 230°F
Troubleshooting
■ Electronic expansion valve defective
■ Faulty thermistor
■ Faulty PCB
* Caution
Be sure to turn off power switch before connect or disconnect connector, or else parts damage may be occurred.
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
230°F shortly after the machine starts up?
NO
Malfunctions occur after running for some time even though the measured temperature is below 230°F . Pull out the exhaust sensor and measure its resistance at standard temperatures resistance-temperature table according to the
YES
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.
the results much?
deviate
NO
The outdoor mainboard is damaged and needs be replaced
YES
The sensor is damaged. Replace the sensor with a new one.
Domestic air conditioner
11.4.10 The communication fault between indoor and outdoor
indoor diplay
Outdoor diplay
E7
LED1 flash 15 times
Method of malfunction detection
Seivice diagnosis
Communication is detected by checking the indoor PCB and the outdoor PCB
Malfunction detection conditions
Supposed causes
Troubleshooting
■ 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
* Caution
Be sure to turn off power switch before connect or disconnect connector, or else parts damage may be occurred.
Y ES The outdoor mainboard needs dehumidification.
Restart the a/c and it becomes normally.
NO
If starting up normally, but malfunction occurs again after a while
YES
NO
The outdoor mainboard needs dedust.
Check whether the linking cable between the indoor and outdoor is well connected or whether its core wires are well insulated.
N O 1. Reconnect the linking cable;
2. Replace the linking cable with new one.
Y ES
( A )
47 Domestic air conditioner
Seivice diagnosis
( A )
Check the indoor mainboard.
Measure the AC voltage between positions 1 and 3 on the terminal of outdoor unit with a multimeter.
YES
N O
Test the outdoor power supply (230VAC and +310VDC) with a multimeter.
Measure the voltage between Jumpers 3 and
4 of IC1 on the indoor mainboard with a multimeter.
If both 230VAC and 310DC are available, measure +12V
(from7805) is available.
If the voltage is of a constant value of 0V DCto5V DC
If 230VAC is available but 310DC not, the power module is damaged, replace it with a new one.
YES
NO
The indoor mainboard is damaged; replace it with a new one.
The outdoor mainboard is damaged;
Replace them with a new one.
YES
If the value is constant at about 30V, the indoor mainboard is damaged, replace it with a new one.
NO
If the value varies between 0 and 80 VAC, the outdoor mainboard is damaged, replace it with a new one.
The outdoor mainboard is damaged; replace it with a new one.
Domestic air conditioner
Circuit diagrams
11.4.11 Loss of synchronism detection
Inverter side current detection is abnormal
Outdoor diplay LED1 flash 18 times
LED1 flash 19 times
Method of malfunction detection
Malfunction detection conditions
Supposed causes
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
Troubleshooting
■ Faulty The wiring of compressor
■ Faulty compressor
■ Faulty PCB
* Caution
Be sure to turn off power switch before connect or disconnect connector, or else parts damage may be occurred.
Within 3 minutes after the machine is supplied with power and turned on with the remote controller, check whether the compressor can start up
NO
1. The wiring of compressor is incorrect or the connection is poor;
2. The compressor is damaged
YES
At first, the compressor start up ,soon the compressor stopped with the LED1 on the outdoor PCB blinks ( 1Hz ) 19/18 times
Maybe there is some disturbance
YES
IPM Module is damaged and needs replacing.
Malfunction unsolved the Malfunctions exist also, the compressor is damaged replace a new one
49 Domestic air conditioner
Circuit diagrams
11.4.12 High work-intense protection
Outdoor diplay LED1 flash 21 times
Method of malfunction detection
Malfunction detection conditions
Supposed causes
Troubleshooting
High work-intense control is activated in the heating mode if the temperature being sensed by 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
* Caution
Be sure to turn off power switch before connect or disconnect connector, or else parts damage may be occurred.
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?
NO
The indoor unit blows poorly due to blocked filters or poor condition of the fan?
NO
Use some tools to measure the pressure of system ,
YES
YES 1 、 Check room temperature and pipe temperature sensor.
2 、 the temperature monitoring circuit of the indoor mainboard
1) Clean the filters
2) Reinstall the fan.
Domestic air conditioner
Sound level
12.Performence and cerves diagrams
12.1 Cooling capacity-temperature curves
i n d o o r t e m p .
DB/WB
64.4/53.6
°F
64.4/57.2
°F
68/59 °F
71.6/60.8
°F
77/64.4
°F
80.6/66.2
°F
86/71.6
°F
89.6/73.4
°F
89.6/75.2
°F
Cooling value-temerature table o u t d o o r t e m p (.
h u m i d ti y 4 6 % )
64.4
°F 68 °F 77 °F 89.6
°F 95 °F 104 °F 109.4
°F 114.8
°F
2443 2417 4048 3627 3228 3149 2910 2160
2494 2469 4133 3711 3428 3228 2989 2222
2546 2520 4217 3795 3507 3308 3069 2283
2623 2597 4301 3922 3587 3388 3189 2345
2777 2700 4428 4175 3786 3587 3468 2592
2854 2751 4512 4301 3906 3707 3547 2654
3034 3009 4850 4639 4265 4105 3986 2993
3060 3034 4934 4723 4344 4145 4026 3024
3111 3086 5018 4808 4424 4225 4105 3086 cooling capacity and indoor/outdoor temp.curves
5500
5000
4500
4000
3500
3000
2500
2000
1500
1000
°F
64.4/53.6
64.4/57.2
°F
68/59
°F
71.6/60.8
°F
77/64.4
°F
80.6/66.2
°F indoor tempe.(DB/WB)
86/71.6
°F
89.6/73.4
°F
89.6/75.2
°F
64.4
°F
68 °F
77 °F
89.6
°F
95 °F
104 °F
109.4
°F
114.8
°F
Domestic air conditioner
Sound level
12.2 Cooling power consumption value- temperature curves
i n d o o r t e m p .
DB/WB
64.4/53.6°F
64.4/57.2°F
68/59°F
71.6/60.8°F
80.6/66.2°F
86/71.6°F
89.6/73.4°F
89.6/75.2°F
Power consumption value-temp.table
514 486 o u t d o o r t e m p (.
h u m i d ti y 4 6 % )
64.4°F 68°F 77°F 89.6°F
429
437
432
443
1138
1159
1186
1206
446
454
468
491
497
505
457
463
474
483
503
494
1179
1206
1179
1206
1254
1267
1227
1247
1274
1301
1355
1396
1288 1423
95°F
1220
1240
1260
1281
1321
1342
1403
1423
1443
104°F
1301
1328
1349
1362
1396
1409
1504
1531
1559
109.4°F
1227
1362
1396
1423
1464
1491
1572
1592
1613
114.8°F
626
640
653
720
746
753
806
899
966 power consumption-temp.curves
1700
1500
1300
1100
900
700
500
300
100
64.4°F
68°F
77°F
89.6°F
95°F
104°F
109.4°F
114.8°F
64.4/53.6°F 64.4/57.2°F
68/59°F
71.6/60.8°F 77/64.4°F80.6/66.2°F 80.6/66.2°F89.6/73.4°F 89.6/75.2°F indoor tempe.(DB/WB)
Domestic air conditioner
Sound level
12.3 Cooling discharge pressure curves
Cooling discharge pressure.table outdoor temp.
(humidity 46%)
DB/WB
59°F
77°F
86°F
95°F
104°F
113°F
60.8°F
2421
3239
3239
3273
3306
2554 indoor temp.
66.2°F
2504
3273
3306
3339
3473
2554
71.6°F
2588
3339
3339
3439
3473
2652
60.8°F
66.2°F
71.6°F
4000 cooling discharge pressure
3500
3000
2500
2000
1500
59°F 77°F 86°F 95°F
Outdoor Temp.
104°F 113°F
Domestic air conditioner
Sound level
12.4 Cooling suction pressure curves
Cooling suction pressure.table outdoor temp.
(humidity 46%)
DB/WB
59°F
77°F
86°F
95°F
104°F
113°F
60.8°F
660
883
883
893
902
696 indoor temp.
66.2°F
683
893
902
911
947
696
71.6°F
706
911
911
938
947
723 cooling suction pressure 60.8°F
66.2°F
71.6°F
1050
950
850
750
650
550
450
350
59°F 77°F 86°F 95°F
Outdoor Temp.
104°F 113°F
Domestic air conditioner
Sound level
12.5 Heating capacity-temperature curves
Heating capacity and indoor/outdoor temp.table o u t d o o r t e m p .
DB/WB
5°F
23°F
41°F
44.6/42.8°F
59°F
68°F
77°F
59°F
2338
3594
4676
4473
3660
3366
3472 i n d o o r t e m p (.
h u m i d ti y 4 6 % )
68°F
1776
3286
4240
4167
3472
3248
3360
77°F
1905
3031
3940
3779
2955
2703
2783 heating capacity and indoor/outdoor temp.curves
5000
4500
4000
3500
3000
2500
2000
1500
1000
500
0
5°F
23
°F
41°F
44.6/42.8°F
59°F 68°F 77°F
59°F
68°F
77°F
Domestic air conditioner
Sound level
12.6 Heating power consumption value- temperature curves
o u t d o o r t e m p .
DB/WB
5°F
23°F
41°F
44.6/42.8°F
59°F
68°F
77°F
Power consumption value-temp.table i n d o o r t e m p (.
h u m i d ti y 4 6 % )
59°F
881
1057
1193
1094
628
463
465
68°F
949
1044
1356
1204
688
482
487
77°F
1037
1261
1437
1315
748
524
526 heating capacity and indoor/outdoor temp.curves
59°F
77°F
68°F
1600
1400
1200
1000
800
600
400
200
0
5°F 23°F 41°F 44.6/42.8°F 59°F outdoor tempe.(DB/WB)
68°F 77°F
Domestic air conditioner
Sound level
12.7 Heating discharge pressure curves
Heating discharge pressure.table outdoor temp.
(humidity 46%)
DB/WB
5°F
14°F
23°F
32°F
41°F
50°F
59°F
68°F
59°F
2941
3005
3053
3101
3165
3062
2567
2459 indoor temp.
68°F
3069
3101
3133
3165
3197
3154
2644
2507
77°F
3165
3197
3229
3261
3293
3200
2669
2531
4000 heating discharge pressure 59°F
68°F
77°F
3500
3000
2500
2000
1500
1000
5°F 14°F 23°F 32°F 41°F
Outdoor Temp.
50°F 59°F 68°F
Domestic air conditioner
Sound level
12.8 Heating suction pressure curves
Heating suction pressure.table outdoor temp.
(humidity 46%)
DB/WB
5°F
14°F
23°F
50°F
41°F
50°F
59°F
68°F
59°F
743
759
771
783
799
774
649
621 indoor temp.
68°F
775
783
791
799
808
797
668
633
77°F
799
808
816
824
832
808
674
639
900 heating suction pressure
59°F
68°F
77°F
800
700
600
500
400
5°F 14°F 23°F 50°F 41°F
Outdoor Temp.
50°F 59°F 68°F
Domestic air conditioner
Sound level
13.Sound level
Model
Sound power level(Indoor unit)
230V,60HZ
Cooling/heating
Measuring location of microphone
Sound power level
(Outdoor unit)
(cooling/heating)
1U12BE2ERA 62 /
140
122
104
86
68
176
158
140
122
104
86
68
176
158
Domestic air conditioner
Circuit diagrams
14 Circuit diagrams
14.1 Outdoor unit control board Circuit Diagrams
CN5
AC-L
CN6
AC-N AC-N OUT
CN8
AC-L OUT
CN9
Four -Way CN25
1 2
CN11
1 2
CN36
Black
CN2
1
FUSE1
White 1
AC-N
Yellow/Green
CN3
1
PE
CN7
2
4
GND
5V
RST
MODE
白
FLASH
+5V
T25A 250VAC
CN21
3
4
1
2
310V
0V
15V
调 速
反 馈
( 白 )
CN23
3
2
1
5V
GND
Com with Module (Black)
CN33
White
2
1
J17
R50
1K
C20
102/50V
SA1
R36 1K
R37 330
红
CN4
1
COM
+5V
10K
R47
P1
5.1K/1%
RV1
S14K350
RV2
S14K350
RA-362M
ZD2
R34 1K
+15V
R13 330/1W
7 22
R33
2.2K
R3
2K/2W
RV3
S14K350
10 222
CN32
GND
L1
CX1
225/275V
8MH/10A
R35 1K
D1
1N4007
J18
CN30
3
4
1
2
5
R97
10K
PC J35
HEAT
COOL
R51
10K
R52
10K
FUCTION TEST(White)
4
3
1
2
3
4
1
2
IC8
PC817A
IC9
PC817A
IC11
TLP851/PC851
IC10
TLP421/PS2561
R53
10K
+5V
R54
10K
Three-speed AC Fan Two-speed AC Fan CN14 CN15
1
2
4
3
2
1
4
3
CX2
225/275V
R102
0
8MH/10A
J28 J29 J30 J31
L2
+5V
R38
330
R39
10K
J9
R41 1K
102/50V
J21
+5V
R59
2K
R42
0
R104
4.7K
+5V
PTC1
COM ST W B White Black COM L H C C COM L H C
2U/450V
C1
C
CX3
225/275V
400N
J32
K5 K3 K4 K6 K2
K1
C14
R61
2K
R62
10K
+12V
J34
12V-5A-892H(N)-1AC-C
12V-25A-891P-1A-C
+12V+12V
J7
+15V+15V
J13 J4
J38
J33
J16
J10
12V-5A-892H(N)-1AC-C
12V-5A-892H(N)-1AC-C
R89 R85
12V-5A-892H(N)-1AC-C
D11
LL4148
R84
C23 C24
104/50V
D5
LL4148
C25
12V-5A-892-1CC-C
C26
E11
R88
D6
10K
LL4148
+5V
R87
4.7K
CN17
3
1
4.7U/16V
CN18
R99
R40 5.1K/1%
R100
4.7K
R101
4.7K
J20
C16
0
0
0
Comment: 102/50V
R95
10K
R96
10K
+5V
C10
J5
+5V
J22
62
61
13
36
38
28
27
26
44
24
50
22
6
7
49
10
15
18
10K
AVSS
DC FAN PG
Indoor Com IN
PC COM
Terminal Pro
MODULE COM IN
NC
COOL-EN
HEAT-EN
XIN
VSS
NC
NC
NC
NC
NC
10K
CS
HW
SW-1
SW-2
HEAT-2
SDA
H/L FAN SPEED
IC5
HEAT-1
E-VALVE-B
E-VALVE-A
R5F212A8SNFA
FAN
PTC
NC
NC
NC
NC
NC
4.7K
51
52
53
54
46
55
56
47
29
30
42
58
63
1
4
5
3
43
40
35
33
32
12
1K
1K
R75 2K
4.7K
R86
R79
R77
J39
J40
R67
R68
R70
R71
1K
1K
IC7ULN2003
4
5
2
3
R91
10K
E13
4.7U/16V
E14
4.7U/16V
+5V
16
14
12
11
7
GND12V
D
C
B
A
3
1
CN19
2
1
CN20
3
1
CN31
1
2
CN16
1
2
4
6
+12V
1
2
SW1
4
3
R64
10K
R65
10K
5
6
7
IC6 AT24C02B
GND
VCC
GND
GND
4
3
+5V
1 3
CX5
104/275V
4 100
R24
1
CY8
472/1KV
3
D10
ER106
R19
T1
10
9
47
Comment: E22034
D8
MBR3100\ER302
E7
470U/25V
C3
102/100V
C8
+12V
104/50V
1
R22
1K/0.5W
IC4
Vin
6
7
D7
MBR1100\SB1100
E5
470U/25V
R29
47
E6
100U/16V
C7 104
L7805CV
Vout
3
+5VD
0 220 1 220
+5V
E8 C9
104/50V
CY9
222/250VAC
R25
10K
R90 0
R26
1K
R27
10K
5.1K/1%
1
ADJ
IC1
HV
2
FB NC
3
CS VCC
J11 4
GND DRV
NCP1200P100
R15
15
M1
8
7
6
5
IRFUC20
C4
103/50V
R16 2/1W
4
3
4
5
E3
22U/25V
R18 47
C2
102/100V
D9
MUR115\MUR130\ER106
E4
470U/25V
IC2 PC817A
1
2
C6
104/50V
R30
1K
R31
1K
+15V
R17
330/1W
C5
104/50V
R32
5.1K/1%
CN22
1
2
3
模 块 板 电 源 ( 蓝 )
IC3
TL431C
Domestic air conditioner
14.2 Module board Circuit Diagram
Circuit diagrams
D
C
B
A
1 2 3 4
CN11
3
2
1
通讯
CN8
AC-L
CN9
AC-N
TR1
MMBT9013
1
R224
4.7K
BG1
D25BX60B
R223
330
5V
2
3
IC7
TLP251
C012
104
R011
4.7K
C018
103
C502
100U/25V
C201
104
C202
104
5V
5V
8
6
5
R212
9.1K
R211
1K
R205
1K
R206
1K
R016
1K
3
15V
R015
330
MMBT9013
TR3
104/275V
2
3
2
3
CN7
LI
L
5.2MH/15A
LO
CN6
C405
RS1
0.015/5W
R216
10
R221 140
C207
104
8
IC6
1
4
HA1630D06
8
IC4
1
4
HA1630D06
R014
330
R214
100
R218 82
R220 82
C016
472
D207
FFA30U60DN
IC8
SGH40N60UF
C404
474/630VDC
CN1
P
680U/400V*2
C406
104/275V
24
P
PM1
PS21964-AT/AST/PS219A4-ASTX
U
V
23
22
CN2
U
CN3
V
R215
10K
5V
C208
104
R207 1K
R209 1K
R210 6.8K
R208
6.8K
6
5
R201 1K
R203 1K
R204 6.2K
R202
6.2K
6
5
PC2
PC817A
PC1
PC817A
IC6
7
HA1630D06
IC4
7
HA1630D06
R012
4.7K
5V
R013
330
RS2
0.02/5W
20
N
FO CIN VN
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
C413
100U/25V
W 21
15V
C023
224
D206
24V/1W
CN4
W
N
CN5
R222,R225 参数由压缩机退磁电流计算而定
5V
R225 4.22K
R222
330 3 2
IC5
6
8
C204 104
IC5
7
5
C203
104
4
HA17393AF
HA17393AF
1
5V
R010
4.7K
15V
CN10
3
2
1
电源 ( 蓝 )
5V
C504
100U/25V
C501
100U/16V
R019
4.7K
R018 4.7K
TR2
MMBT9012
C014
102
15V
R230
10
R213 100
C011
104
3
4
1
2
IC3
24C04
D203
US1M
C032
104
D202
US1M
C034
104
D201
US1M
C036
104
8
7
6
5
5V
5V
C412
22U/25V
C411
22U/25V
C410
22U/25V
R005 4.7K
R017 4.7K
C028
103
CN12
7
6
5
4
3
2
1
RES
FWP
TXD
RXD
MD1
5V
GND
R008
4.7K
5V
C004
104
R009 4.7K
R006 100
C020
102
C019
103
R007 4.7K
C022
103
C003
104
5V
104
C002
53
54
55
56
49
50
51
52
45
46
47
48
41
42
43
44
IC1
SH7046
57
58
59
60
61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80
C006
474
20
19
18
17
16
15
14
13
8
7
6
5
4
3
2
1
12
11
10
9
C001
104
C015
102
X1 10M
D204
LL4148
5V
C005
104
IC2
T600D
C013
104
4.7U/16V
C503
D208
LL4148
5V
1 2 3
海尔集团研发推进本部科技有限公司
周渊 设计
审核
批准
型号
专用号
版本号 :
4
HSU-09HC03/R2(DB)
0011800052
1 ; 1
D
C
B
A
Domestic air conditioner
Circuit diagrams
Sincere Forever
Haier Group
Haier Industrial Park, No.1, Haier Road
266101, Qingdao, China_
Http
:
//www.haier.com
Edited by :
Signed by :
Zou Na
Liu xiang
He shiquan
Approved by: Wu Hongjin
Domestic air conditioner

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Key features
- DC inverter technology for precise temperature control and energy efficiency
- Powerful cooling and heating performance for year-round comfort
- Quiet operation for a peaceful environment
- Easy-to-use controls for effortless operation
- Compact and stylish design that complements any décor