Haier 2U14CS4ERA Service Manual
Haier 2U14CS4ERA is a wall-mounted type DC Inverter FREE MATCH N-Series air conditioner. It is a powerful and efficient cooling and heating solution for your home. With its advanced features, it provides optimal comfort and convenience.
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SERVICE MANAUL
Wall Mounted Type
DC Inverter FREE MATCH N-Series
Model No.
2U14CS4ERA
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
2015 (Qingdao Haier Air Conditioner General corp. , Ltd)
All rights reserved. Unauthorized copying and distribution is a violation of law
Haier Group
Version
˖
V1 Date
˖
2015-11-12
Contents
Contents
1. Introduction ............................................................................................1
2. Specifications.........................................................................................6
3. Sensors list ............................................................................................7
4. Piping diagrams .....................................................................................8
5. Operation range .....................................................................................9
6. Printed Circuit Board Connector Wiring Diagram .................................10
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 .....................................................
62
13. Sound level .........................................................................................
78
14. Circuit diagrams ..................................................................................
79
Domestic air conditioner
Introduction
1 Introduction
1.1 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
Ƹ
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.
1.1.1 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
1
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.
1.1.2 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
2
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
3
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.
1.1.3 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
4
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.
1.1.4 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:
1.1.5 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
5
2 Specifications
NOMINAL DISTRIBUTION SYSTEM VOLTAGE
P h a s e /
F
V r o e l t q a u g e e n c y H z
V
NOMINAL CAPACITY and NOMINAL INPUT
Capacity rated
Power Consumption(Rated)
S E E R / S C O P
Annual energy consumption
M o i s t u r e R e m o v a l
KW
Btu/h
KW
W / W
KWh m ³ / h
1
5 0
2 3 0
Specification
9+9 c o o il n g h e a t i n g
3.9
4.0
c o o
9+12 il n g h e a t i n g
4.1
4.2
13310 13650 14000 14350
1000
1370 1030
1370
6.1
4.0
6.1
4.0
235
1433 235 1471
09 single:1.2x10
-3
12 single:1.6x10
-3
TECHNICAL SPECIFICATIONS-UNIT
Dimensions
Packaged
Dimensions
W e i g h t
G r o s s w e i g h t
/
/
H*W*D
H*W*D
S o u n d p e e s s u r e
Sound level
S o u n d p o w e r mm mm
K G
K G d B d B
540×780×270
617×910×380
34
37
5 1
6 2
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 t i n g c u r r e n t
A
A
A c o o il n g
4.7
6.3
6.7
h e a t i n g
6.2
8.6
TECHNICAL SPECIFICATIONS-PARTS
Compressor
Fan
Heat exchanger
T y p e
M o d e l
M o t o r o u t p u t
Oil type
O li c h a r g e v o l u m e
T y p e
M o t o r o u t p u t
A i r f l 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 i t c h
W
L
W m ³ / h r p m c o o il n g h e a t i n g
R o t a r y C o m p r e s s o r
ASD113RKPA6JT1
850
α
6 8H E S -H o r equ i v al e n t
0.33
Propeller
4 0
3 1 .
2
880/650
ML fin-
¶
7HI-HX tube
2*24*1.4
Domestic air conditioner
TECHNICAL SPECIFICATIONS-OTHERS
Refrigerant type
Refrigerant circuit
Refrigerant charge
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
Specification
KG
R410a
1.2
m
30(double)
20(single) m 15
Capillary mm mm mm
Φ
6.35
Φ
9.52
Φ
16
Both liquid and Gas pipes m m
30(double) 20(single)
15 m g/m
20
20
Note: the data are based on the conditions shown in the table below
c o o il n g
Indoor: 27 ć
DB/19 ć
WB
Outdoor: 35 ć
DB/24 ć
WB h e a t i n g
Indoor:20 ć
DB
Outdoor: 7 ć
DB/6 ć
WB
P i p i n g l e n g t h
5m
Conversation formulae
Kcal/h= KW×860
Btu/h= KW×3414 cfm=m³/min×35.3
3
ˊ
Sensors list
type Description
Ambient sensor
Suction sensor
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 Defrosting sensor
Dis c h a r g i n g s e n s o r I t 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
Qty
1
1
1
1
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Pinping diagrams
4
ˊ
Pinping diagrams
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8
Operation range
5
ˊ
Operation range
Domestic air conditioner
9
Wiring diagram
6. Printed Circuit Board Connector Wiring Diagram
Connectors
PCB (1) Control PCB
17
18
19
20
21
22
9
10
11
12
13
7
8
5
6 s e r i e s P C B c o n n e c t o r
1
2
3
4
CN1
CN2
CN3
CN8
Connector for power N and L
Connector for ground
C o n n e c t w i t h l o a d
CN9
CN10
CN11
CN15
Connector for CN9,CN8 on the module board
Connector for four way valve coil
Connector for electric expansion valves
CN16
CN17
CN18
CN19
CN20
Connector for thermistors
14
15
CN21
CN47
16 CN22
Connector for fan motor
Connector for DC POWER 15Vand 5V to the module board
CN23
CN24
CN25
CN28
CN36
CN45
Connector to P and N of the module board
Connector for communicate between indoor and outdoor unit
Connector for terminal protect
Domestic air conditioner
PCB (2) Module PCB
Wiring diagram s e ir e s
1
2
P C B c o n n e c t o r
P (CN1)
N (CN5)
C o n n e c t w ti h l o a d
Connector for CN28,CN25 on the control board
5
6
7
3
4
LO (CN6)
LI (CN7)
AC_L(CN8)
AC_N(CN9)
CN2(U)
Connector for reactor
Connector for CN10,CN9 on the control board
Connector for the compressor
8
9
CN3(V)
CN4(W)
10 CN10
11 CN11
Connector for the DC power 5V and 15V form the control PCB
Connector for communicate between the control board and the module board
: Other Designations
PCB(1) (Control PCB)
1) FUSE 1, Fuse (25A,250VAC)
2)LED 1 keep light representative normal ,if keep flash interval representative trouble Alarm
3)RV1,RV2,RV3 Varistor
Domestic air conditioner
Wiring diagram
CN9 CN10
CN8
CN36
CN3
CN49
CN11
CN15
CN16
CN47
CN17
CN18
CN19
CN20
CN21
CN22
CN
45
CN23 CN24 CN25 CN28
PCB(1)
Domestic air conditioner
CN2
CN1
Wiring diagram
CN9
CN6 CN8 CN7 CN10 CN11
CN4
CN3
CN2
CN1 CN5
PCB(2)
Domestic air conditioner
Wiring diagram
0
Domestic air conditioner
7 Founction and Control
7.1The control system of outdoor unit
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
Functions and Control
Mode
H e a it n g
R e f ir g e r a it o n
Minimum operation frequency
3 4 H z
3 4 H z
Maximum operation frequency
9 6 H z
7 2 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
34Hz,56Hz,82Hz 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 refrigerating: is the maximum operation frequency of the compressor; IN
B While heating:
IN is the minimum operation frequency of the compressor.
is the maximum operation frequency of the compressor; is the minimum operation frequency of the compressor.
1 The frequency limitation which is affected by the environment temperature.
Heating mode:
Serial
No.
Temperature scope Frequency limitation
1
2
3
4
5
6
Twh <-12
T w h < 8
T w h < 2
T w h < 5
5<Twh 12
12<Twh 18
Max_hz8 120HZ
M a x _ h z 7 1 2 0 H Z
M a x _ h z 4
M a x _ h z 5
1
1
2 0
2 0
H Z
H
Max_hz1 100HZ
Max_hz2 56HZ
Z
7 1 8 < T w h M a x _ h z 6 3 8 H Z
Remarks: Twh :the environment temperature of outdoor;
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.
Refrigeration/dehumidification mode:
Domestic air conditioner
Functions and Control
Serial No.
1
Temperature scope
Twh 16
Frequency limitation
Max_hz1 34HZ
4
5
2
3
16<Twh 24
24<Twh 32
32<Twh 44
T w h > 4 4
Max_hz2 40 HZ
Max_hz3 62 HZ
Max_hz4 72 HZ
M a x _ h z 5 4 0 H Z
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 actural 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
T= Ti*Pi / Pi ( Ti=|Tst_i-Tnh_i the indoor environment temperature| ;Pi i the ability of the indoor unit)
Refrigeration/dehumidification:
T
The percentage of the rated frequency P
<1 1 2 3 >=4
50% 70% 100% 120% 140%
Heating mode
T
The percentage of the rated frequency P
<1
1
50% 70%
2
100%
3
114%
>=4
180%
K= Ki/the number of running machines
The indoor set airflow speed
The percentage of the rated frequency Ki
Breeze Low Medium High Strong Quiet Healthy airflow
70 80% 90% 100% 120% 70% 70%
The calculation of the actual output frequency: when there is no healthy airflow: F =F-ED-* P K
When the healthy airflow has been set: F =F-ED-* P K airflow speed K healthy airflow
When refrigerating, it is needed to satisfy
When heating, it is needed to satisfy
IN
IN r< F<
< F< r
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 refrigerating, the time is changed to 15 seconds).
Domestic air conditioner
16
Functions and Control
7.1.2.1 The outdoor fan control when refrigerating 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 30
26 Ta<30
The temperature of the outdoor coil Te
Airflow speed
High
Keeping the speed
24
23
Ta<26
Ta<24
5
Ta<5
Ta<23
Medium
Keeping the speed
Low
Low 15 Te
15 >Te
Stop
Remarks: Ta:The temperature of the outdoor air; Te: The temperature of the outdoor coil.
7.1.2.2 The outdoor fan control when heating
The temperature of the outdoor air Ta
Ta 22
19
16
14
Ta<22
Ta<22
Ta<16
Airflow speed
Low
Keeping the speed
Medium
Keeping the speed
Ta<14 High
Remarks: Ta:The temperature of the outdoor air; Te: The temperature of the outdoor coil.
7.1.3
The control of the outdoor electronic expansion valve
When starting the compressor: the opening size of the valve must be guaranteed to have entered into the standard opening size, and then the compressor can be started.
When refrigeration is in vain (the machine is shut down or is in the state of retrograde operation), the opening size of the expansion valve of the indoor unit is 5 steps;
When heating is in vain, the opening size of the expansion valve of the indoor unit is 55 steps;
When the outdoor unit is shut down, the valve is opened completely for 2 minutes, and then begin initialization.
The scope of refrigerationg valve 90-----480 steps
The scope of heating valve 80-----480 steps
The valves are adjusted according to the degree of superheat SHa SHa.
7.1.4
Four way control
For the details of Defrost four-way valve control, see the Defrost 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.
Domestic air conditioner
7.1.5 Protection function
Functions and Control
7.1.5.1 TTC high temperature-preventing protection
Once the machine is started, it can run TTC 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.
TTC
93
90
110
100
98
Abnormal stop
Decreasing the frequency rapidly 1HZ/second
Decreasing the frequency slowly (1HZ/10seconds)
The frequency doesn’t change.
Increasing the frequency (1HZ/10second)
Increasing the frequency 1HZ/1second
TTC>=110 lasts for 20 seconds. Overheating protection of air-blowing, alarm malfunction to the indoor, others don’t last.
7.1.5.2 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).
The indoor heat exchanger sensor tests the temperature of the indoor heat exchanger. If the temperature is higher than 55 , 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 47 , recover to the normal control.
TC
Fgh_t1 2
59
Fgh_t2 2
Fgh_t3 2
Fgh_t4 2
Fgh_t5 2
Normal
The compressor stops
Fgh_t1 65
N Decreasing the frequency rapidly Fgh_t2
P Decreasing the frequency slowly
Fgh_t3 55
Q Prohibiting increasing the frequency
Fgh_t4 51
R Increasing slowly Fgh_t5 47
Domestic air conditioner
Functions and Control
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
7.1.5.3 The control of preventing the overcurrent of the compressor
During the starting process of the compressor, if the current of the compressor is greater than
17A 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 12A, 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 10A, 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 9A, the frequency of the compressor increases at the prohibited speed.
During the starting process of the compressor, if the AC current is greater than 8A, the frequency of the compressor increases at the speed of no faster than 0.1HZ/second.
7.1.5.4 The protection function of AC current:
During the starting process of the compressor, if the AC current is greater than 15A, 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 13A, 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 11A, the frequency of the compressor increases at the prohibited speed.
During the starting process of the compressor, if the AC current is greater than 10A, 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.
When the outdoor environment temperature is higher than 40 , AC current protection value decreases by 10AD
When the outdoor environment temperature is higher than 46 ,AC current protection value decreases by 15AD
When the outdoor environment temperature is higher than 50 ,AC current protection value decreases by 20AD
7.1.5.5 Antifreezing protection of the indoor heat exchanger
When refrigerating/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).
Domestic air conditioner
11 //ice_temp_3+5
9 ce_temp_3+3 ice_temp_3 ice_temp_2 ice_temp_1
5
6
3
0
Increasing slowly
8 //ice_temp_3+2
Keeping the frequency
6
Decreasing slowly
Decreasing rapidly
Stop ice_temp_1
Functions and Control
When Tpg_indoor ice_temp_1 , the frequency of the compressor decreases at the speed of
1HZ/1second.
When Tpg_indoor ice_temp_2 , 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_3 , the frequency of thecompressor doesn’t change.
When ice_temp_3 Tpg_indoor ice_temp_3+3 , the frequency of the compressor increases at the speed of 1HZ/10seconds.
For example, Tpg_indoor<= 0 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+2 , the compressor recovers.
7.1.5.6 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.
7.1.5.7 The socket protect
If the socket temperature is higher than 120 ,the outdoor unit will stop and report malfunction(the LED light flashing 36 times).The compressor stops for more than 3 minutes, the compressor recovers.
7.1.5.8 T emperature protection of the outdoor refrigerating coil
When the Defrost temperature and the sensor’s temperature are higher than 65 , the frequency of the compressor decreases 1hz/10seconds. Keep the frequency until it decreases to the lowest frequency. When the temperatures are lower than 65 and higher than 60 , keep the frequency of the compressor. When the temperatures are lower than 60 , relieve the Defrost temperature protection.
7.1.5.9 Malfunction display and malfunction handling
a) For the complete appliance’s malfunctions Annex 2
If there’s malfunction with the outdoor unit, the light of the outdoor unit will flash and its frequency is 1HZ, the number of times is according to the table, when a round of flashing is finished, the
Domestic air conditioner
F11
----
E9
---
---
----
Functions and Control light should be off for 5 seconds.
b) For the units’ malfunctions Annex 1
If there’s malfunction with the units, this will not affect the run of the complete appliance, but this can be displayed by the malfunction light, the light flashing frequency is 0.5HZ, the number of times is according to the malfunction table of the indoor units. When a round of flashing is finished, the light should be off for 10 seconds. Then report according to the order : unit A unit B unit C unit D, that is, if there’s malfunction with several units, then just report the indoor unit with the highest priority level. Among the unit malfunctions, the priority level of the communication malfunction is the highest, for others, that appears first will have the priority.
Remarks: in 3 minutes when the compressor stops, the units’ malfunctions are not displayed; the complete appliance’s malfunctions are prior to the units’ malfunctions.
Annex 1 Malfunction codes of the out unit
Remarks: under the mode of refrigeration, the malfunctions of each unit’s thin pipe temperature sensor are not reported, under the mode of heating, the malfunctions of each unit’s thick pipe temperature sensor are not reported.
F12
F1
1
2
Outdoor EEPROM error
The protection of IPM
F22 3
F3 4
F19 6
F4 8
F21 10
F6 12
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
Defrost temperature sensor failure
Ambient temperature sensor failure
F25 13 Discharge temperature sensor failure
E7 15 Communication fault between indoor and outdoor units
18
19
21
24
25
36 deviate from the normal for the compressor
Loop of the station detect error
High work-intense protection
Overcurrent of the compressor
Overcurrent protection for single-phase of the compressor
The socket protect
7.2 Value of thermistor
Outdoor Unit
R25 =10K
Temp.( )
-30
-29
-28
Ambient Sensor, Defrost Sensor, Pipe sensor
3% B25 /50 =3700K 3%
Max.(K Ω ) Normal(K Ω ) Min.(K Ω )
165.2170
155.5754
146.5609
147.9497
139.5600
131.7022
132.3678
125.0806
118.2434
-1.94
-1.93
-1.91
Tolerance( )
1.75
1.74
1.73
Domestic air conditioner
Functions and Control
Domestic air conditioner
Functions and Control
Domestic air conditioner
Functions and Control
Domestic air conditioner
Functions and Control
Discharge Sensor
R80 =50K 3%
B25/80 =4450K 3%
Temp.(( ))
-19
-18
-17
-16
-15
-14
-13
-12
-11
-10
-9
-8
-30
-29
-28
-23
-22
-21
-20
-27
-26
-25
-24
Max.(K Ω ) Normal(K Ω ) Min.(K Ω )
14646.0505
13654.1707
12735.8378
12061.7438
11267.8730
10531.3695
9924.4999
9290.2526
8700.6388
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
3699.5139
3480.9407
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
3171.3148
2989.2460
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
2716.0828
2564.6945
Tolerance( )
-2.96
-2.95
-2.93
2.45
2.44
2.44
-2.82
-2.80
-2.79
-2.77
-2.76
-2.75
-2.73
-2.92
-2.91
-2.90
-2.88
-2.87
-2.86
-2.84
-2.83
-2.72
-2.70
-2.69
-2.67
-2.66
2.38
2.37
2.37
2.36
2.35
2.34
2.34
2.33
2.32
2.31
2.30
2.29
2.43
2.42
2.42
2.41
2.41
2.40
2.39
2.39
Domestic air conditioner
1825.0899
1724.6540
1630.2870
1541.5904
1458.1938
1379.7528
1305.9472
1236.4792
1171.0715
1109.4661
1051.4226
996.7169
945.1404
896.4981
850.6086
3276.5302
3085.2854
2906.2851
2738.6777
2581.6752
2434.5487
2296.6230
2167.2730
2045.9191
1932.0242
807.3024
766.4212
727.8172
691.3524
656.8979
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
11
12
13
14
15
16
17
7
8
9
10
3
4
5
6
0
1
2
-4
-3
-2
-1
-7
-6
-5
26
27
28
29
30
31
32
33
34
35
36
22
23
24
25
18
19
20
21
1597.0431
1511.6468
1431.2787
1355.6163
1284.3593
1217.2282
1153.9626
1094.3200
1038.0743
985.0146
934.9440
887.6792
843.0486
800.8922
761.0603
2818.6731
2658.8058
2508.9126
2368.3158
2236.3876
2112.5459
1996.2509
1887.0018
1784.3336
1687.8144
723.4134
687.8205
654.1596
622.3161
592.1831
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
1396.2333
1323.7551
1255.4324
1191.0048
1130.2298
1072.8813
1018.7481
967.6334
919.3533
873.7359
830.6210
789.8583
751.3077
714.8380
680.3265
2422.6139
2289.2164
2163.9230
2046.1961
1935.5371
1831.4826
1733.6024
1641.4966
1554.7931
1473.1460
647.6580
616.7252
587.4271
559.6694
533.3634
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
Functions and Control
-2.35
-2.33
-2.31
-2.29
-2.27
-2.26
-2.24
-2.48
-2.47
-2.45
-2.43
-2.41
-2.40
-2.38
-2.36
-2.64
-2.63
-2.61
-2.60
-2.58
-2.56
-2.55
-2.53
-2.52
-2.50
-2.07
-2.05
-2.03
-2.01
-1.99
-1.97
-1.95
-2.22
-2.20
-2.18
-2.16
-2.14
-2.12
-2.10
-2.09
-1.93
-1.90
-1.88
-1.86
2.09
2.08
2.07
2.06
2.04
2.03
2.02
2.19
2.17
2.16
2.15
2.14
2.13
2.12
2.11
2.28
2.28
2.27
2.26
2.25
2.24
2.23
2.22
2.21
2.20
1.89
1.87
1.86
1.84
1.83
1.81
1.80
2.00
1.99
1.98
1.96
1.95
1.93
1.92
1.90
1.78
1.76
1.75
1.73
Domestic air conditioner
199.6531
190.9639
182.6945
174.8228
167.3280
160.1904
153.3914
146.9136
140.7403
134.8559
129.2457
123.8956
118.7926
113.9241
109.2784
315.5682
301.1254
287.4128
274.3905
262.0206
250.2676
239.0983
228.4809
218.3860
208.7855
104.8443
100.6112
96.5692
92.7088
89.0211
85.4976
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
55
56
57
58
59
60
61
51
52
53
54
47
48
49
50
37
38
39
40
41
42
43
44
45
46
70
71
72
73
74
75
76
77
78
79
80
66
67
68
69
62
63
64
65
186.3369
178.4584
170.9508
163.7951
156.9733
150.4683
144.2641
138.3454
132.6980
127.3081
122.1630
117.2504
112.5589
108.0776
103.7961
290.6199
277.6976
265.4119
253.7288
242.6161
232.0436
221.9825
212.4060
203.2887
194.6066
99.7046
95.7939
92.0553
88.4805
85.0614
81.7908
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
173.7524
166.6217
159.8181
153.3249
147.1268
141.2090
135.5577
130.1598
125.0027
120.0746
115.3645
110.8618
106.5564
102.4388
98.5000
267.4031
255.8620
244.8745
234.4118
224.4465
214.9529
205.9065
197.2844
189.0648
181.2273
94.7315
91.1253
87.6735
84.3690
81.2048
78.1744
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
Functions and Control
-1.44
-1.42
-1.40
-1.37
-1.35
-1.32
-1.30
-1.63
-1.60
-1.58
-1.56
-1.53
-1.51
-1.49
-1.47
-1.84
-1.82
-1.80
-1.78
-1.76
-1.74
-1.71
-1.69
-1.67
-1.65
-1.08
-1.05
-1.03
-1.00
-0.98
-0.95
-0.92
-1.28
-1.25
-1.23
-1.20
-1.18
-1.15
-1.13
-1.10
-0.90
-0.87
-0.85
-0.85
1.38
1.36
1.34
1.32
1.30
1.28
1.26
1.54
1.52
1.50
1.48
1.46
1.44
1.42
1.40
1.71
1.70
1.68
1.66
1.64
1.63
1.61
1.59
1.57
1.55
1.06
1.03
1.01
0.99
0.96
0.94
0.92
1.23
1.21
1.19
1.17
1.15
1.12
1.10
1.08
0.89
0.87
0.84
0.84
Domestic air conditioner
35.1903
34.0269
32.9075
31.8302
30.7933
29.7950
28.8337
27.9078
27.0160
26.1569
25.3290
24.5311
23.7620
23.0205
22.3055
49.7063
47.9835
46.3286
44.7385
43.2105
41.7386
40.3241
38.9643
37.6569
36.3996
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
99
100
101
102
103
104
105
95
96
97
98
91
92
93
94
81
82
83
84
85
86
87
88
89
90
114
115
116
117
118
119
120
106
107
108
109
110
111
112
113
121
122
123
124
33.7653
32.6151
31.5096
30.4467
29.4246
28.4417
27.4961
26.5864
25.7110
24.8685
24.0574
23.2765
22.5245
21.8002
21.1025
48.2057
46.4842
44.8323
43.2468
41.7248
40.2604
38.8545
37.5045
36.2078
34.9622
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
32.3689
31.2338
30.1438
29.0970
28.0915
27.1254
26.1970
25.3048
24.4470
23.6222
22.8291
22.0662
21.3323
20.6261
19.9465
46.7083
44.9911
43.3452
41.7672
40.2540
38.7996
37.4048
36.0668
34.7831
33.5513
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
Functions and Control
-1.53
-1.57
-1.61
-1.65
-1.69
-1.73
-1.77
-1.22
-1.26
-1.30
-1.33
-1.37
-1.41
-1.45
-1.49
-0.85
-0.89
-0.93
-0.96
-1.00
-1.03
-1.07
-1.11
-1.14
-1.18
-2.15
-2.19
-2.23
-2.27
-2.32
-2.36
-2.41
-1.81
-1.85
-1.89
-1.93
-1.98
-2.02
-2.06
-2.10
-2.45
-2.50
-2.54
-2.58
1.48
1.52
1.55
1.59
1.63
1.66
1.70
1.19
1.23
1.27
1.30
1.34
1.37
1.41
1.44
0.85
0.89
0.92
0.95
0.99
1.02
1.06
1.09
1.13
1.16
2.04
2.08
2.12
2.16
2.19
2.23
2.27
1.74
1.77
1.81
1.85
1.89
1.93
1.96
2.00
2.31
2.35
2.39
2.43
Domestic air conditioner
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
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
8.0584
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
7.3875
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
6.7664
Functions and Control
-2.63
-2.68
-2.72
-2.77
-2.81
-2.86
-2.91
-2.95
-3.00
-3.05
-3.09
-3.14
-3.19
-3.24
-3.29
-3.33
2.47
2.51
2.55
2.59
2.63
2.67
2.71
2.75
2.80
2.84
2.88
2.92
2.96
3.00
3.04
3.09
Domestic air conditioner
Dimensinal drawings
8.Dimensional drawings
unit: mm
270
780
9.Center of gravity
Outdoor unit
270
128
470
780
unit: mm
Domestic air conditioner
10.Installations
Installations
EUROPEAN REGULATIONS
CONFORMITY FOR THE MODELS
IMPORTANT INFORMATION REGA-
RDING THE REFRIGERANT USED
CE
All the products are in conformity with the following
European provision:
- Low Voltage Directive 73/23/EEC
- Low Voltage Directive 2006/95/EC
-Electomagnetic CompatibilitY 89/336/EEC
-Electomagnetic CompatibilitY 2004/108/EC
ROHS
The products are fulfilled with the requirements in the directive 2002/95/EEC of the European parliament and of council on the Restriction of the use of Certain Hazardous
Substances in Electrical and Electronic Equipment (EU
RoHS Directive)
WEEE
In accordance with the directive
2002/96/CE of the European parliament, herewith we inform the consumer about the disposal requirements of the electrical and electronic products.
DISPOSAL REQUIREMENTS:
Your air conditioning product is marked with this symbol.This means that electrical and electronic products shall not be mixed with unsorted household waste. Do not try to dismantle the system yourself : the dismantling of the air conditioning system,treatment of the refrigerant, of oil and of other part must be done by a qualified installer in accordance with relevant local and national legislation. Air conditioners must be treated at a specialized treatment facility for reuse, recycling and recovery. By ensuring this product is disposed of correctly, you will help to prevent potential negative consequences for the environment and humen health. Please contact the installer or local authority for more information.
Battery must be removed from the remote controller and disposed of separately in accordance with relevant local and nationl legislation.
Contains fluorinated greenhouse gases covered by the Kyoto Protocol
R410A
1= kg
2
1
F E
2=
1+2= kg kg
A
B
C
D
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
WARNING:
·
If the supply cord is damaged, it must be replaced by the manufacturer,its service agent or similarly qualified persons in order to avoid a hazard.
·
This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.
·
Children should be supervised to ensure that they do not play with the appliance.
Domestic air conditioner
Installations
Indoor/Outdoor Unit Installation Drawings
The models adopt HFC free refrigerant R410A.
For installation of the indoor units,refer to the installation manual which was provided with the units.
(The diagram shows a wall-mounted indoor unit.)
Attention must be paid to the rising up of drain hose more than 15 cm more than10cm
Indoor unit A
Indoor unit B more than 10cm
F
Optional parts for piping
A
B
Non-adhesive tape
Adhesive tape
C
D
E
Saddle (L.S) with screws
Connecting electric cable for indoor and outdoor
Drain hose
F
G
Heating insulating material
Piping hole cover
C
Arrangement of piping directions
Rear left
Left
Rear right
Right
Below more than 20cm ƽ ƽ
The marks from
A to
G in the fi gure are the parts numbers.
The distance between the indoor unit and the fl oor should be more than 2m.
more than 60cm more than 20cm
D more than 25cm
E
Fixing of outdoor unit ƽ
Fix the unit to concrete or block with bolts (10mm) and nuts fi rmly ƽ and horizontally.
When fi tting the unit to wall surface, roof or rooftop, fi x a supporter surely with nails or wires in consideration of earthquake and strong wind.
ƽ
If vibration may affect the house, fi x the unit by attaching a vibration-proof mat.
AIR OUTLET
AIR INLET
CONNECTING PIPING AND ELECTRICAL WIRING
DRAIN HOSE
4
Compressor(Inside of Unit) ƽ
The above indoor and outdoor units’ picture is just for your reference.
Please be subject to the actual product purchased.
Domestic air conditioner
WARNING
CAUTION
Installations
Domestic air conditioner
Installations
Domestic air conditioner
Installations
Domestic air conditioner
Installations
Domestic air conditioner
Installations
Domestic air conditioner
Installations
Domestic air conditioner
Installations
Domestic air conditioner
Installations
NO
Air outlet
Wind direction
4.Installation dimension(Unit:mm)
Cushion rubber
Model
14K
18K
W
780
D H L1
L2
L3
270 540 566
106.5
317
810
288 688
583 113.5
319.5
40
Installations
1.
14K 18K
2.
Connection of pipes
ƽ
To bend a pipe, give the roundness as large as possible not to crush the pipe , ƽ ƽ and the bending radius should be 30 to 40 mm or longer.
Connecting the pipe of gas side fi rst makes working easier.
The connection pipe is specialized for R410A.
Half union
Flare nut
Forced fastening without careful centering may damage the threads and cause a leakage of gas.
Spanner
Torque wrench
Pipe Diameter( ǿ
)
Liquid side6.35mm(1/4")
Liquid/Gas side9.52mm(3/8")
Gas side 12.7mm(1/2")
Fastening torque
18N.m
42 N.m
55N.m
Gas side 15.88mm(5/8") 60 N.m
Be careful that matters, such as wastes of sands,water,, etc. shall not enter the pipe.
CAUTION:
Be careful that matters, such as wastes of sands, etc. shall not enter the pipe. The standard pipe length of each indoor unit is 5m. If total pipe length is over 20m, the function of the unit will be affected, charge more refrigerant is needed, according to 20 g/m. But the charge of refrigerant must be conducted by professional air conditioner engineer. Before adding additional refrigerant, perform air purging from the refrigerant pipes and indoor unit using a vacuum pump,then charge additional refrigerant.
CAUTION
Outdoor unit
Outdoor unit
Indoor unit
B1
A1
B2
Indoor unit
A2
B
Indoor unit
Oil trap
Indoor unit
B1
Indoor unit
B1
Indoor unit
A1
Outdoor unit
A2
A3
Indoor unit
B2
Indoor unit
Outdoor unit
B2
Max.Elevation: A1 max =15m A2 max =15m
A3 max =15m
In case the elevation B is more than 5m, oil trap shoud be installed every 5~7m
Max. Length: B1 max =20m B2 max =20m
(B1+B2) max =30m
In case the pipe total length (B1+B2) is more than
20m, the refrigerant should be charged, according to 20 g/m.
Domestic air conditioner
Installations
NO
Air outlet
Wind direction
Cushion rubber
4.Installation dimension(Unit:mm)
Model
14K
18K
W
780
D H L1
L2
L3
270 540 566
106.5
317
810
288 688
583 113.5
319.5
Domestic air conditioner
Installations
2-way valve
3-way valve
2-way valve
3-way valve
2-way valve
3-way valve
2-way valve
3-way valve ƽ ƽ
Each indoor unit musts to be vacuumed , according to the above steps.
ƽ
If the refrigerant of the air conditioner leaks, it is necessary to discharge all the ƽ refrigerant. Vacuumize fi rst, 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.
Otherwise, there will be abnormal high pressure in the system to make it crack and lead to personal injuries.
Domestic air conditioner
Installations
14K 18K
The type of connecting wire is H07RN-F.
T 25A/250V.
14K
Outdoor unit A
18K
Outdoor unit A
To Indoor unit A To Indoor unit A
Model
14K 18K
Outdoor unit B
Outdoor unit B
To Indoor unit B To Indoor unit B
Connecting wiring
Power cable
DOUBLE
4G0.75mm
2
DOUBLE
3G2.5mm
2
POWER
^
POWER
^
Domestic air conditioner
Outdoor Unit
Installations
17
18
19
25
25
25
1
2
4
5
6
8
9
10
11
12
13
15
16
Suction temperature sensor failure
15
110
When the The wiring of compressor is wrong or the connection is poor
Lack of refrigerant
Check if there is leakage in the unit.
m 15
Domestic air conditioner
Service diagnosis
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
N O N a m e P a r a m e t e r P i c t u r e
1 Compressor
Rated voltage:220 V
Rated current:3.3A
Rated frequency:50 Hz
Resistance
˖
1.41
Ω
Rated voltage: 310V motor
Rated frequency:50/60Hz
Rated power:40W
Rated voltage:16.56V±5%
3 Reactor
Rated frequency:50Hz
Rated inductance:5.0mH±5%
Rated voltage:220-240V
Power :4.5/3.5W
Domestic air conditioner
Service diagnosis
11.3 Problem Symptoms and Measures
Symptom Check Item Details of Measure
None of the units operates
Check the power supply. Check to make sure that the rated voltage is supplied.
Check the indoor PCB Check to make sure that the indoor PCB is broken
Operation sometimes stops.
Check the power supply.
A power failure of 2 to 10 cycles can stop air conditioner operation.
Equipment operates but does not cool, or does not heat
(only for heat pump)
Check for faulty operation of the electronic expansion valve.
Set the units to cooling operation, and compare the temperatures of the liquid side connection pipes of the connection section among rooms to check the opening and closing operation of the electronic expansion valves of the individual units.
Diagnosis by service port pressure and operating current.
Check for insufficient gas.
Large operating noise and vibrations
Check the installation condition.
Check to make sure that the required spaces for installation (specified in the Technical Guide, etc.) are provided.
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
Outdoor and
Indoor Malfunction
Outdoor
Malfunction
E7
F22
F3
F19
F4
F8
F21
F7
F6
F25
F11
F28
F2
E1
E2
E 4
E14
F 1 2
F 1
F23
E9
15
10
11
12
13
18
19
24
-
--
--
--
1
2
3
4
6
8
9
25
21
Service diagnosis
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 r r o r
Indoor fan motor malfunction
O u t d o o r E E P R O M e r r o r
T h e p r o t e c t i 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 temperature
Discharge
Outdoor DC fan motor fault
Defrost temperature sensor failure
Suction temperature sensor failure
Ambient temperature sensor failure
Discharge temperature sensor failure deviate from the normal for the compressor
Loop of the station detect error
Overcurrent of the compressor
Overcurrent protection for single-phase of the compressor
High work-intense protection
Reference
Page
Page 58.
Page 49.
Page 49.
P a g e 50.
Page 51.
P a g e 50.
P a g e 53.
Page 54.
Page 55.
Page 56.
Page 57.
Page 54.
Page 61.
Page 52.
Page 49.
Page 49.
Page 49.
Page 49.
Page 60.
Page 60.
Page 54.
48
Domestic air conditioner
Service diagnosis
.
.1 Thermistor or Related Abnormality
Indoor Display E1: Room temperature sensor failure
E2: Heat-exchange sensor failure
Outdoor display 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
Method of The temperatures detected by the thermistors are used to determine thermistor errors
Malfunction
Detection
Malfunction When the thermistor input is more than 4.92V or less than 0.08V during compressor
D e c i s i o n o p e r a t i o n .
Conditions
Note: The values vary slightly in some models
Supposed
■
Faulty connector connection
Causes
■
Faulty thermistor
■
Faulty PCB
Troubleshooting * Caution Be sure to turn off power switch before connect or disconnect connector, or else parts damage may be occurred.
Check the connector connection.
NO
Correct the connection
Is it normal?
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.
Domestic air conditioner
Service diagnosis
.
.2 EEPROM abnormal
Indoor Display E4: Indoor EEPROM error
Indoor display F12: Outdoor EEPROM error; Outdoor LED1 flash 1 times
Method of malfunction detection
The Data detected by the EEPROM are used to determine MCU
Malfunction detection conditions
When the data of EEPROM is error or the EEPROM is damaged
Supposed
■
Faulty EEPROM data
Causes
■
Faulty EEPROM
■
Faulty PCB parts damage may be occurred.
Replace the indoor or outdoor mainboard.
Domestic air conditioner
Service diagnosis
.
.3 Indoor DC fan motor fault
Indoor display E14
Method of
DC fan motor is detected by checking the fan running condition and so on malfunction detection
Malfunction detection conditions
when the data of EEPROM is error or the EEPROM is damaged
Causes
Ƶ
DC fan motor protection dues to the DC fan motor faulty
Ƶ
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. parts damage may
Check whether Terminal on the indoor mainboard is well inserted.
NO Reinsert the terminals
Is it normal?
Yes
Electrify the machine again and turn it on in the Cool state with the remote controller. check whether motor can run
˛
Yes
Measure the voltage between 3 and 6 of the terminal about 0-5v.
NO
Measure the voltage between 1 and 4 of the terminal of fan motor on the mainboard about DC310V, Measure the voltage between 4 and 5of the terminal about
DC15V. Measure the voltage between 4 and 6 of the terminal about 1-6v.
Is it normal?
N0 the motor of the indoor unit is damaged and needs replacing.
Yes
Is it normal?
Yes
N0
The mainboard of the indoor unit is damaged and needs replacing
Domestic air conditioner
Service diagnosis
.
.4 Outdoor DC fan motor fault
Outdoor display LED1 flash 9 times
DC fan motor is detected by checking the fan running condition and so on
Method of malfunction detection
when the data of EEPROM is error or the EEPROM is damaged
Malfunction detection conditions
Causes
Ƶ
DC fan motor protection dues to the DC fan motor faulty
Ƶ
DC fan motor protection dues to faulty PCB
Troubleshooting may be occurred.
* Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage
Check whether Terminal on the outdoor mainboard is well inserted.
NO
Reinsert the terminals
Is it normal?
Yes
Electrify the machine again and turn it on in the Cool state with the remote controller. check whether motor can run
˛
Yes
Measure the voltage between 3 and 6 of the terminal about 0-5v.
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?
N0 the motor of the outdoor unit is damaged and needs replacing.
Yes
Yes
Is it normal?
N0
The mainboard of the outdoor unit is damaged and needs replacing
Domestic air conditioner
Service diagnosis
.
.5 IPM protection
Outdoor display: LED1 flash 2 times
Method of malfunction detection
IPM protection is detected by checking the compressor running condition and so on
Malfunction detection conditions
■
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
Causes
■
IPM protection dues to the compressor faulty
■
IPM protection dues to faulty PCB of IPM module
■
Compressor wiring disconnected
Troubleshooting
* 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,
<(6
IPM Module is damaged and needs replacing.
Malfunction unsolved
12
The compressor is started normally, but malfunctions are reported after it has run for some time.
1
ǃ
The system may have been over or under charged with gas, which can be judged through the pressure of the measuring system.
2
ǃ
The shaft of compressor is seized and the compressor needs replacing.
Domestic air conditioner
Service diagnosis
.
.6 Over-current of the compressor
Outdoor Display: LED1 flash 3 or 24 or 25 times
Method of malfunction detection
The current of the compressor is too high
when the IPM Module is damaged
Malfunction detection or the compressor is damaged. conditions power supply voltage is too low or too high
Causes
■
Faulty IPM Module
■
Faulty compressor
■
Faulty power supply
Troubleshooting
* 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.
Yes
Repair the power supply
Domestic air conditioner
Service diagnosis
.
.7 The communication fault between IPM and outdoor PCB
Outdoor display: LED1 flash 4 times
Method of malfunction detection
Communication is detected by checking the IPM module and the outdoor PCB
Malfunction detection conditions
■
The outdoor PCB broken leads to communication fault
■
The IPM module broken leads to communication fault
Causes
■
The outdoor PCB is broken
■
The IPM module is broken
■
Communication wiring disconnected
Troubleshooting
* 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
Service diagnosis
.
.8 Power Supply Over or under voltage fault
Outdoor display: LED1 flash 6 times The power supply is over voltage
Method of malfunction detection
abnormal voltage rise or fall is detected by checking the specified voltage detection circuit.
Malfunction detection conditions
An voltage signal is fed from the voltage detection circuit to the microcomputer
Causes
■
Supply voltage not as specified
■ the IPM module is broken
■ the outdoor PCB is broken
Troubleshooting
* 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?
No
Yes
Yes
Test the outdoor power supply
(+310VDC) with a multimeter. check whether the power is >150 V or <390V?
Maybe there is some disturbance
Change the IPM module
NO
Yes
~230 is ok?
NO
This question may be caused by the power. Repair the power supply.
Change the IPM module
Domestic air conditioner
Service diagnosis
.
.9 Overheat Protection For Discharge Temperature
Outdoor display: LED1 flash 8 times
Method of malfunction detection
The Discharge temperature control is checked with the temperature being detected
by the Discharge pipe thermistor
Malfunction detection conditions
when the compressor discharge temperature is above 110 ć
Causes
■
Electronic expansion valve defective
■
Faulty thermistor
■
Faulty PCB
Troubleshooting
* 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
110 ć
shortly after the machine starts up?
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.
NO
Malfunctions occur after running for some time even though the measured temperature is below 110 ć
. Pull out the exhaust sensor and measure its resistance at standard temperatures according to the resistance-temperature table
YES
The results deviate much?
NO
The outdoor mainboard is damaged and needs be replaced
The sensor is damaged. Replace the sensor with a new one.
Domestic air conditioner
Service diagnosis
.
.10 The communication fault between indoor and outdoor
Indoor display E7 outdoor display LED1 flash 15 times
Method of malfunction detection
Communication is detected by checking the indoor PCB and the outdoor PCB.
Malfunction detection conditions
■
The outdoor PCB broken leads to communication fault.
■
The indoor PCB broken leads to communication fault.
Causes
■
Communication wiring disconnected.
■
The indoor PCB is broken.
■
The outdoor PCB is broken.
■
The Module PCB is broken.
Troubleshooting
* Caution Be sure to turn off power switch before connect or disconnect connector, or else parts damage may be occurred.
Restart the a/c and it becomes normally.
NO
If starting up normally, but malfunction occurs again after a while
YES
Yes
NO
Check whether the linking cable between the indoor and outdoor is well connected or whether its core wires are well insulated.
No
The outdoor mainboard needs dehumidification.
The outdoor mainboard needs dedust.
1. Reconnect the linking cable;
2. Replace the linking cable with new one.
Yes
˄
A
˅
Domestic air conditioner
Service diagnosis
˄
A
˅
Check the indoor mainboard.
Yes
Measure the voltage between Jumpers 3 and
4 of IC1 on the indoor mainboard with a multimeter.
No
Test the outdoor power supply (230VAC and +310VDC) 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
Service diagnosis
.
.11 Loss of synchronism detection
Inverter side current detection is abnormal
Outdoor Display LED1 flash 18 times
LED1 flash 19 times
Method of malfunction detection
Malfunction detection conditions
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
Causes
Ƶ
Faulty The wiring of compressor
Ƶ
Faulty compressor
Ƶ
Faulty PCB
Troubleshooting
* Caution Be sure to turn off power switch before connect or disconnect connector, or 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
YES
Maybe there is some disturbance
IPM Module is damaged and needs replacing.
Malfunction unsolved the Malfunctions exist also, the compressor is damaged replace a new one
Domestic air conditioner
Service diagnosis
.
.12 High work-intense protection
Outdoor display LED1 flash 21 times
High work-intense control is activated in the heating mode if the temperature
Method of
being sensed by the heat exchanger thermistor exceeds the limit. malfunction detection
Activated when the temperature being sensed by the heat exchanger
Malfunction detection conditions
rises above 65 ć
twices in 30 minutes.
Ƶ
Faulty electronic expansion valve
Ƶ
Dirty heat exchanger
Causes
Ƶ
Faulty heat-exchange sensor
Ƶ
Insufficient gas
Troubleshooting
* 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 65 ć
The malfunction is reported after the machine has run for some time?
YES
1
ǃ
Check room temperature and pipe temperature sensor.
2
ǃ the temperature monitoring circuit of the indoor mainboard
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
ˈ
YES
1) Clean the filters
2) Reinstall the fan.
Domestic air conditioner
Performance curves diagram
12
Performance Curves Diagram
12.1 cooling capacity-temp. curves
indoor tem p.
D B/W B
18/12
18/14
20/15
22/16
25/18
27/19
30/22
32/23
32/24
18
2714
2771
2829
2914
3086
3171
3371
3400
3457
20
2686
2743
2800
2886
3000
3057
3343
3371
3429
(9+9)performancecurves cooling value-temerature table
outdoor tem p.(hum idity 46% )
25
4498
4592
4686
4779
4920
5014
5389
5482
5576
32
4030
4123
4217
4358
4639
4779
5154
5248
5342
35
3587
3809
3897
3986
4207
4340
4739
4827
4916
40
3499
3587
3676
3764
3986
4119
4561
4606
4694
43
3233
3321
3410
3543
3853
3941
4429
4473
4561
46
2400
2469
2537
2606
2880
2949
3326
3360
3429
6000
5500
5000
4500
4000
3500
3000
2500
2000
1500
1000
18°C
20°C
25°C
32°C
35°C
40°C
43°C
46°C
Domestic air conditioner
Performance curves diagram
cooling capacity-temp. curves
6000
5500
5000
4500
4000
3500
3000 indoor temp.
DB/WB
18/12 ć
21/15 ć
24/16 ć
27/19 ć
30/22 ć
32/23 ć
-10 ć
2931
3035
3399
3597
3862
3991
0 ć
2867
3016
3380
3521
3793
3812
(9+12) performance curves cooling value-temerature table
10 ć
2771
2967 outdoor temp.(humidity 46%)
20 ć
2649
25 ć
3275
30 ć
3567
3296
3444
2806
3054
3253
3363
3800
4018
3693
4174
4401
3683
3815
3468
3606
4283
4456
4599
4790
35 ć
3427
3659
4048
4286
4530
4637
40 ć
3396
3523
3915
4133
4399
4554
46 ć
3108
3328
3717
3865
4078
4194
FRROLQJFDSDFLW\DQGLQGRRURXWGRRUWHPSFXUYHV
-10
0 ć
46 ć
10 ć
20 ć
25 ć
30 ć
35 ć
40 ć ć
LQGRRUWHPS'%:%
Domestic air conditioner
Performance curves diagram
12.2 heating capacity-temp.curves
outdoor tem p.
D B/W B
-15
-5
5
7/6
15
20
25
(9+9)performancecurves heating capacity and indoor/outdoor temp.table
15 indoor tem p.(hum idity 46% )
20
2 7 8 1
4 2 7 4
5 5 6 1
5 3 1 9
4 3 5 2
4 0 0 2
4 1 2 8
2 1 1 2
3 9 0 8
5 0 4 2
4 9 5 5
4 1 2 9
3 8 6 2
3 9 9 6
25
2 2 6 6
3 6 0 4
4 6 8 6
4 4 9 4
3 5 1 4
3 2 1 4
3 3 0 9 heating capacity and indoor/outdoor temp.curves
Domestic air conditioner
Performance curves diagram
heating capacity-temp.curves
outdoor tem p.
D B/W B
-15
-5
5
7/6
15
20
25
heating capacity and indoor/outdoor temp.table
15 indoor tem p.(hum idity 46% )
20
3 7 0 4
5 6 9 2
7 4 0 7
6 5 7 0
5 0 1 7
4 5 6 9
4 7 1 3
2 7 3 6
5 1 8 7
6 6 9 3
6 1 2 0
4 8 6 0
4 5 2 2
4 6 7 8
25
2 6 4 0
4 8 0 1
6 2 4 1
5 5 5 0
4 0 5 1
3 6 7 0
3 7 7 8 heating capacity and indoor/outdoor temp.curves
Domestic air conditioner
1900
1700
1500
1300
1100
900
700
500
300
100
12.3 Cooling power consumption-temp.curves
Performance curves diagram indoor tem p.
D B/W B
18/12
18/14
20/15
22/16
25/18
27/19
30/22
32/23
32/24
18
465
474
484
493
508
533
539
548
558
(9+9)performancecurves
20
468
481
496
502
514
524
545
536
527
power consumption value-temp.table
outdoor tem p.(hum idity 46% )
25
1235
1257
1279
1309
1279
1309
1360
1375
1397
32
1287
1309
1331
1353
1382
1412
1470
1514
1544
35
1323
1345
1367
1389
1434
1456
1522
1544
1566
40
1412
1441
1463
1478
1514
1529
1632
1662
1691 pow er consum ption
-temp.curves
43
1331
1478
1514
1544
1588
1617
1706
1728
1750
46
679
694
708
781
810
817
875
976
1048
35
40
43
46
18
20
25
32 indoor tem pe.(D B /W B )
Domestic air conditioner
Performance curves diagram
Coolingpower consumption-temp.curves
2100
1900
1700
1500
1300
1100
900
700
500
300
100 indoor tem p.
D B/W B
18/12
18/14
20/15
22/16
25/18
27/19
30/22
32/23
32/24
18
468
477
487
496
512
536
543
552
561
20
471
484
499
505
518
527
549
539
530
power consumption value-temp.table
outdoor tem p.(hum idity 46% )
25
914
930
947
968
947
968
1006
1017
1034
32
952
968
985
1001
1023
1044
1088
1121
1142
35
1494
1519
1544
1569
1619
1643
1718
1743
1768
40
1594
1627
1652
1668
1710
1726
1843
1876
1909 pow er consum ption
-temp.curves
43
1502
1668
1710
1743
1793
1826
1926
1951
1975
46
583
595
608
670
694
701
750
837
899
35
40
43
46
18
20
25
32 indoor tem pe.(D B /W B )
Domestic air conditioner
Performance curves diagram
12.4 heating power consumption-temp.curves
outdoor tem p.
D B /W B
-15
-5
5
7/6
15
20
25
(9+9)performancecurves power consumption value-temp.table
15 indoor tem p.(hum idity 46% )
20
941
1129
1274
1168
671
494
497
1013
1115
1448
1286
735
515
520
25
1108
1346
1535
1404
799
559
562 heating capacity and indoor/outdoor tem p.curves
1800
1700
1600
1500
1400
1300
1200
1100
1000
900
800
-15 -5 5 7/6 15 indoor tem pe.(D B /W B )
20 25
15
25
20
Domestic air conditioner
heating power consumption-temp.curves
Performance curves diagram outdoor tem p.
D B /W B
-15
-5
5
7/6
15
20
25
(9+12)performancecurves power consumption value-temp.table
15 indoor tem p.(hum idity 46% )
20
941
1129
1274
1168
671
494
497
1013
1115
1448
1286
735
515
520
25
1108
1346
1535
1404
799
559
562 heating capacity and indoor/outdoor tem p.curves
1800
1700
1600
1500
1400
1300
1200
1100
1000
900
800
-15 -5 5 7/6 15 indoor tem pe.(D B /W B )
20 25
15
25
20
Domestic air conditioner
Performance curves diagram
12.5 Cooling discharge pressure
outdoor tem p.
(hum idity 46% )
D B/W B
15
25
30
35
40
45
16
2465
3298
3298
3332
3366
2600
(9+9)performancecurves cooling discharge pressure.table
indoor tem p.
19
2550
3332
3366
3400
3536
2600
C O O LIN G D ISC H AR G E PR ESSU R E
22
2635
3400
3400
3502
3536
2700
16
19
22
4000
3500
3000
2500
2000
1500
15 25 30 35
O utdoor Tem p
40 45
Domestic air conditioner
Performance curves diagram
Cooling discharge pressure
outdoor tem p.
(hum idity 46% )
D B/W B
15
25
30
35
40
45
16
2465
3298
3298
3332
3366
2600
(9+12)performancecurves cooling discharge pressure.table
indoor tem p.
19
2550
3332
3366
3400
3536
2600
C O O LIN G D ISC H AR G E PR ESSU R E
22
2635
3400
3400
3502
3536
2700
16
19
22
4000
3500
3000
2500
2000
1500
15 25 30 35
O utdoor Tem p
40 45
Domestic air conditioner
12.6 cooling suction pressure curves
outdoor tem p.
(hum idity 46% )
D B/W B
15
25
30
35
40
45
16
6 4 3
8 6 0
8 6 0
8 6 9
8 7 8
6 7 8
(9+9)performancecurves cooling suction pressure.table
indoor tem p.
19
6 6 5
8 6 9
8 7 8
8 8 6
9 2 2
6 7 8
Performance curves diagram
22
6 8 7
8 8 6
8 8 6
9 1 3
9 2 2
7 0 4
Domestic air conditioner
cooling suction pressure curves
outdoor tem p.
(hum idity 46% )
D B/W B
15
25
30
35
40
45
16
6 4 3
8 6 0
8 6 0
8 6 9
8 7 8
6 7 8
performancecurves cooling suction pressure.table
indoor tem p.
19
6 6 5
8 6 9
8 7 8
8 8 6
9 2 2
6 7 8
Performance curves diagram
22
6 8 7
8 8 6
8 8 6
9 1 3
9 2 2
7 0 4
Domestic air conditioner
12.7 heating discharge pressure curves
Performance curves diagram outdoor tem p.
(hum idity 46% )
D B/W B
15
10
5
10
15
0
5
20
15
2941
3005
3053
3101
3165
3062
2567
2459
(9+9)performancecurves
Heating discharge pressure.table
indoor tem p.
20
3069
3101
3133
3165
3197
3154
2644
2507
H E A TIN G D IS C H A R G E P R E S S U R E
25
3165
3197
3229
3261
3293
3200
2669
2531
15
20
25
4000
3500
3000
2500
2000
1500
1000
15 10 5 0 5
O utdoor Tem p
10 15 20
Domestic air conditioner
Performance curves diagram
heating discharge pressure curves
outdoor tem p.
(hum idity 46% )
D B/W B
15
10
5
0
5
10
15
20
15
2941
3005
3053
3101
3165
3062
2567
2459
(9+ 12)performancecurves
Heating discharge pressure.table
indoor tem p.
20
3069
3101
3133
3165
3197
3154
2644
2507
H E A TIN G D IS C H A R G E P R E S S U R E
25
3165
3197
3229
3261
3293
3200
2669
2531
15
20
25
4000
3500
3000
2500
2000
1500
1000
15 10 5 0 5
O utdoor Tem p
10 15 20
75
Domestic air conditioner
Performance curves diagram
12.8 heating suction pressure curves
outdoor tem p.
(hum idity 46% )
D B/W B
15
10
5
10
0
5
15
20
15
7 2 2
7 3 8
7 5 0
7 6 2
7 7 7
7 5 2
6 3 1
6 0 4
(9+9)performancecurves heating discharge pressure.table
indoor tem p.
20
7 5 4
7 6 2
7 6 9
7 7 7
7 8 5
7 7 5
6 4 9
6 1 6
25
7 7 7
7 8 5
7 9 3
8 0 1
8 0 9
7 8 6
6 5 6
6 2 2
15
20
25
900
800
700
600
500
400
15 10 5 0 5
O utdoor Tem p
10 15 20
Domestic air conditioner
heating suction pressure curves
outdoor tem p.
(hum idity 46% )
D B /W B
10
15
20
0
5
5
15
10
15
7 2 2
7 3 8
7 5 0
7 6 2
7 7 7
7 5 2
6 3 1
6 0 4
(9+12)performancecurves heating discharge pressure.table
indoor tem p.
20
7 5 4
7 6 2
7 6 9
7 7 7
7 8 5
7 7 5
6 4 9
6 1 6
Performance curves diagram
25
7 7 7
7 8 5
7 9 3
8 0 1
8 0 9
7 8 6
6 5 6
6 2 2
15
20
25
900
800
700
600
500
400
15 10 5 0 5
O utdoor Tem p
10 15 20
77
Domestic air conditioner
13 Sound level
Model
Sound presure level
230V,50Hz
Cooling/heating
L SL
Measuring location
Location of microphone
H
51
/
/
53
106 212
425 cooling
850 1700 3400 6800
80
NC-70
70
60
50
40
NC-60
NC-50
NC-40
NC-30
30
20 approximate threshold hearing for continuous noise
63
125
NC-20
250 500 1000 2000
4000
8000
Octave band center frequency(Hz) sound power level
(cooling/heating)
61
Sound level
53
106 212
425 heating
850 1700
3400 6800
80
70
60
50
NC-70
40
30
NC-60
NC-50
NC-40
NC-30
20 approximate threshold hearing for continuous noise
63 125
NC-20
250
500
1000
2000 4000 8000
Octave band center frequency(Hz)
78
Domestic air conditioner
14 Circuit diagrams
14.1 Outdoor unit control board Circuit Diagrams
Circuit diagrams
CN2
1
AC-L
CN1
1
AC-N
CN3
1
PE
FUSE1
T25A 250VAC
RV1
S14K350
R1
1M
L1
CX1
225/275V
8MH/20A
+5V
CN21
XG-A
4
3
5V
5V
2
1
CG-A
CN20
4
XG-B
5V
3
2
1
5V
CG-B
CN19
3
5V
2
1
HW
R73
20K/1%
E18
4.7U/16V
E19
4.7U/16V
E16
4.7U/16V
E17
4.7U/16V
E15
4.7U/16V
4.7U/16V
E14
CN18
2
1
5V
CS
CN17
3
2
1
5V
TC
4.7U/16V
E13
SA1
% R
R76
R74
1K
R75
1K
RV2
S14K350
RA-362M
20K/1%
R70 1K
J66
R71
1K
C28 C27
RV3
S14K350
IC13
Y0
Y2
Y
Y3
Y1
INH
VEE
VSS
VDD
X2
X1
X
X0
X3
A
B
MC14052
+5V
J49
J39
J48
R93
0
J62
IC5
Y0
Y2
Y
Y3
Y1
INH
VEE
VSS
VDD
X2
X1
X
X0
X3
A
B
+5V
MC14052
C23
104/50V
R68
1K
R66
C30
104/50V
C26 C25
+5V
R89
1K
R64
1K
R88
CN33
1
GND
5V
2
3
4
RST J29
MODE
FLASH
C16
104/50V
+5V
R37
10K
J28
CN45
10K
1
2 R91
0
1K
CN35
4
3
2
1
+5V
C29
104/50V
C24
104/50V
CN7
AC-L OUT
CN8
1
PE
55
56
57
58
59
60
61
49
50
51
52
53
54
62
63
64
CN6
AC-N OUT
R2
1M
L2
CX2
225/275V
8MH/20A
472/250V/275V
CY5 CY6
472/250V/275V
CX3
225/275V
4052-A
CG
HW
CS
XG
TC
NC
NC
VSS/AVSS
VREF
VCC
PTC
+5V 104/50V
C13
E12
4.7U/16V
C12
104/50V
VCC VO
IC14 T600D
D11
RLS4148
XT1 4M
R35
10K
CN9
AC-N OUT
J1
+12V
PTC1
400N/PSB400
K6
12V-25A-891P-1A-C
J12 J15 J27 J30 J40 J43 J57 J59
R90 0
IC17
R5F212A8SNFA
J53
CN10
AC-L OUT
12V-5A-892H(N)-1AC-C
+5V
J9 J10 J16 J38 J41 J44 J56
+5V
NC
NC
NC
NC
NC
TXD0
RXD0
NC
HEAT-EN
COOL-EN
TEST-EN
NC
NC
NC
A2
B2
R36 2K
+12V
26
25
24
23
22
21
20
19
18
17
32
31
30
29
28
27 J61
J11 J14
+12V
ERROR
LED1
K5
+5V
7
R60 8
10K
5
6
IC6
SDA
SCL
GND
VCC
AT24C04
GND
GND
GND
GND
C21
104/50V
J45 J55 J21
R77
5.1K/1%
2
1
4
3
COM ST
R7
100/1W
CX4
103/275V
K4
J4
J2
K3
CN14 CN13
H M L C COM COM L H
C
2U/450V
C1
C
K2
J3
12V-5A-892-1CC-C
+12V
K1
12V-5A-892-1CC-C
+12V
+12V
A2
B2
C2
D2
CN16
6
5
4
3
2
1
A1
B1
C1
D1
CN15
4
3
2
1
6
5
IC8
ULN2003
C17
104/50V
IC7
ULN2003
C18
104/50V
C22
104/50V
+5V
R87
R29
10K
R78
CN44
TEST/SS
1
2
+5V
R79
R30
1K
1
2
4
10K
IC15
IC16
C11
102/50V
1
2
3
4
5
CN34
R80 1K
J20
R28
5.1K/1%
P1
2SA1037AK
C10
102/50V
R85
PC817A
PC817A
4
3
1
R84 1K
J60
CN41
1K
E11
47U/25V
R81
2.2K
C31
103/50V
10V/0.5W
ZD2
R8
330/1W
R82 1K
ZD3
5.1V/0.5W
3 2
10K
330 R83 330
5V
COM
GND
CN24
CX8
3
2
1
CN40 CN42
104/275V
310V
CN22
0V
15V
3
4
1
2
5
6
N1
8050
AC-L
AC-N
D4 D3 D2 D1
IN4007 IN4007
E10
47U/450V
CX5
104/275V
IN4007 IN4007
NTC1
SCK-4R72
E22034
T1
1
CY11
472/1KV
3
D5
IN4937\ER106
ZD1
IN5948B
R18
10K
R92 0
R22
1K
R19
5.1K/1%
1
ADJ
IC1
HV
2
FB NC
3
J8
R21
4
20K/1%
8
7
CS VCC
6
GND DRV
NCP1200P100
R20
15
5
M1
IRFUC20
C4
103/50V
R9 2/1W
E9
47U/25V
4
3
10
9
4
5
R15
47
D8
MBR3100\ER302
E7
470U/25V
6
7
D7
MBR1100
E5
470U/25V
R11 47
D6
MUR115\ER106
470U/25V
IC2
E4
PC817A
C3
102/100V
C2
102/100V
1
2
C8
+12V
104/50V
R23
47
1
R16
1K/0.5W
L3
20UH/1A
C6
E6
100U/16V
CN39
104/50V
R26
1K
IC4
Vin
R25
1K
R12
330/1W
L7805CV
+15V
C5
104/50V
Vout
3
100U/16V
+5VD
220
R27
5.1K/1%
E8
220
IC3
TL431C
+5V
CY12
C9
104/50V
222/250VAC
CN23
1
2
3
CN37
CN31
P
CN29
P
CN28
P
1
1
1
1
CX7
105/275VAC
CX6
105/275VAC
E3
820U/400V
E2
820U/400V
CN38
N
N
1
CN32
1
CN30
1
CN26
N
1
RXD2
TXD2
RXD1
TXD1
+5V
+5V
C14
102/50V
R38
1K
R39
2K
R40
1K
C15
102/50V
R41
1K
R42
2K
R43
1K
3
4
IC12
TLP421/PS2561
1
2
3
4
1
2
IC11
TLP851/PC851
IC10
TLP421/PS2561
IC9
TLP851/PC851
2
1
4
3
2
1
4
3
J64
J65
R5
1.8K
R6
1.8K
D9
IN4007
D10
IN4007
CY8
222/250V
R3
2K/2W
CY10
222/250V
R4
2K/2W
CY7
222/250V
CY9
222/250V
COMB
COMA
N
CN4
1
CN5
1
CN36
1
4
5
2
3
1
CN46
CN27
1
P
E1
820U/400V
LED2
R17
220K/2W
POWER
CN25
N
1
79 Domestic air conditioner
14.2 Module board Circuit Diagram
Circuit diagrams
CN7
LI
5.2MH/15A
LO
CN6
D207
FFA30U60DN
CN1
P
24
P
U 23
CN2
U
CN8
AC-L
1 3
C405
104/275V
IC8
SGH40N60UF
C404
474/275V 680U/400V*2
C406
104/275V
PM1
PS21965-AT
V 22
CN3
V
BG1
D25BX60B RS1
0.015/5W
R215
10K
RS2
0.015/5W
W 21
CN4
W
CN11
3
2
1
CN9
AC-N
N
CN5
20
N
TR1
MMBT9013
R224
4.7K
R223
330
C012
104
R011
4.7K
C018
103
5V
2
104
104
IC7
C502
C201
C202
5V
5V
8
3
TLP251
6
5
100U/25V
15V
R212
9.1K
R211
1K
R205
1K
R206
1K
R015
330
MMBT9013
TR3
R016
1K
2
3
2
3
R216
10
R221 140
C207
104
C017
223
8
4
8
4
IC6
1
R218 82
R220 82
HA1630D06
IC4
1
HA1630D06
R014
330
R214
100
C016
472
5V
C208
104
R207
R209
1K
1K
R210 6.8K
R201
R203
1K
1K
R204 6.2K
PC2
PC817A
PC1
PC817A
R225 20K
5V
R222
1.6K
3
C204104
6
8
IC5
7
5
4
HA17393AF
C203
104
R208
6.8K
6
5
R202
6.2K
6
5
2
IC5
HA17393AF
1
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
IC6
7
HA1630D06
IC4
7
HA1630D06
5V
3
2
1
R010
4.7K
CN10
5V
15V
C504
100U/25V
C501
R213 100
15V
R230
100U/16V
10
C011
104
1
2
3
4
IC3
24C04
D203
US1M
C032
104
D202
US1M
C034
104
D201
US1M
C036
104
8
7
6
5
5V
5V
C412
47U/25V
C411
47U/25V
C410
47U/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
46
47
48
49
50
51
52
41
42
43
44
45
57
58
59
60
53
54
55
56
C003
104
R012
4.7K
5V
R019
4.7K
R018 4.7K
TR2
C014
MMBT9012/2SA1037AK
102
R013
330
D204
LL4148
5V
C005
104
IC2
T600D
C413
100U/25V
IC1
15V
C023
224
C022
103
SH7046
C013
104
5V
C503
104
X1 10M
D206
24V/1W
4.7U/16V
C002
D208
LL4148
C006
474
5V
20
19
18
17
16
15
14
13
8
7
6
5
4
3
2
1
12
11 C001
10
9
104
C015
102
1 1
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 :
Liu Yujuan
Yang Xiaodong
Yang Wenjun
Approved by:
He shiquan
Domestic air conditioner
REMOVAL PROCEDURE
Wall Mounted Type
DC Inverter FREE MATCH N-Series
SERIES:2U14CS4ERA
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
2015 (Qingdao Haier Air Conditioner General corp. , Ltd)
All rights reserved. Unauthorized copying and distribution is a violation of law
Haier Group
Version V1 Date 2015-11-12
1 p
Removal Procedure
1
Domestic Air Conditioner
1 Loosen the top panel screws
2
Lift the top panel
Removal Procedure
2
Domestic Air Conditioner
Removal Procedure
Loosen the screws and pull the panel
3
Domestic Air Conditioner
Removal Procedure
2
Pull the wind circle
3
Remove the inlet grill
Push the hooks first
4
Domestic Air Conditioner
2
Removal Procedure
5
Domestic Air Conditioner
3
Removal Procedure
6
Domestic Air Conditioner
Removal Procedure
2
Loosen the fixing screws and remove the motor
7
Domestic Air Conditioner
4
F M B P
Removal Procedure
8
Domestic Air Conditioner
Loosen the screw and remove the reactor
Removal Procedure
9
Domestic Air Conditioner
5
C H E
1 Loosen the marked screws and pull out the backgurd
Removal Procedure
10
Domestic Air Conditioner
2
Loosen the marked screws and remove the stop valves
3
Loosen the marked screws and remove the stop valves bracket
Removal Procedure
11
Domestic Air Conditioner
4
Remove the compre
-ssor and pipe assay
5
Remove the conden
-ser
Removal Procedure
12
Domestic Air Conditioner

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Key features
- DC Inverter technology for energy efficiency and precise temperature control.
- Free Match N-Series compatibility for flexible installation options.
- Wide operating range for reliable performance in various climates.
- Comprehensive self-diagnosis function for easy troubleshooting.
- Stylish design that complements any home décor.