TICA MINI VRF (CHR/CSREA series) Vrf Air Conditioner with Cooling User Manual
- June 9, 2024
- TICA
Table of Contents
- TICA MINI VRF (CHR/CSREA series) Vrf Air Conditioner with Cooling
- Safety Precautions
- Installation of ODU
- Installation of refrigerant piping
- Air tightness test, vacuuming and supplementing refrigerant
- Electrical control installation
- ODU Control Panel
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)
TICA MINI VRF (CHR/CSREA series) Vrf Air Conditioner with Cooling
No.:
Application Form for Debugging Household Inverter VRF Air Conditioning Unit by Installer
Full name of installer:
Address of installer:
Owner’s name or employer:
Person to contact: Tel:
Installation site: Province City
Unit model:
IDU bar code: ODU bar code:
Distributor: | Person to contact:
Tel: | Fax:
Installer: | Person to contact:
Tel: | Fax:
The following items are to be filled by the installer correctly, so that the
debugging can be arranged in due time. In case the form contents are different
from the real situation, causing the experts unlikely to conduct debugging on
site, the installer must be liable for labor and travelling expenses incurred
to the debugging experts.
Contents to be Checked and Confirmed by Installer
Before installation, ask the installer to carefully read through the manuals and relevant requirements attached to the unit.
1. Check installation position
a. Whether heat dissipation and ventilation for ODU meets requirements for
distance| Yes ( )| No ( )
b. Whether ODU is installed on a base firmly and with vibration damping
measures applied| Yes ( )| No ( )
c. Whether IDU is provided with vibration damping measures and properly
fastened| Yes ( )| No ( )
d. Whether there is space for maintenance| Yes ( )| No ( )
2. Check electrical system before installation
a. Whether air switch capacity and power wire diameter meet unit requirements|
Yes ( )| No ( )
b. Whether correctly wired and whether wiring terminal is pressed and
completely connected| Yes ( )| No ( )
c. Whether neutral line and grounding wire are connected in accordance with
electrical codes| Yes ( )| No ( )
d. Whether the distribution of control wire and power wire meets anti-
interference requirements| Yes ( )| No ( )
e. Whether the length of control wire and power wire is proper| Yes ( )| No (
)
3. Check refrigerating system before installation
a. Whether refrigerant duct meets factory requirements in terms of its
diameter and thickness| Yes ( )| No ( )
---|---|---
b. Whether the length of refrigerant duct meets relevant requirements| Yes (
)| No ( )
c. Whether added nitrogen for welding refrigerant duct to protect air
conditioning unit| Yes ( )| No ( )
d. Whether cleaned refrigerant duct| Yes ( )| No ( )
e. Whether used nitrogen for holding pressure to test leakage| Yes ( )| No ( )
f. Whether vacuumized refrigerating system against installation manual| Yes (
)| No ( )
g. Whether supplemented refrigerant according to standard| Yes ( )| No ( )
Application Form for Debugging Household Inverter VRF Air Conditioning Unit
by Installer
4. Check air duct system before installation
a. Whether the installation of air duct system is designed by professionals|
Yes ( )| No ( )
b. Whether external residual pressure matched actual resistance of air duct|
Yes ( )| No ( )
c. Whether air duct system is provided with static pressure box for air supply
and return| Yes ( )| No ( )
d. Whether air flow organization of indoor air supply and return is
reasonable| Yes ( )| No ( )
e. Whether air duct is insulated| Yes ( )| No ( )
f. Whether air valve is reasonably set| Yes ( )| No ( )
h. Whether return air inlet or IDU is equipped with filter and make sure they
are clean| Yes ( )| No ( )
i. Whether equipped with air return duct in the case of ceiling air return|
Yes ( )| No ( )
j. Whether there is fresh air device| Yes ( )| No ( )
k. Air supply and return mode: 1 bottom air supply and side air return: 2 side
air supply and
side air return
| Yes ( )| No ( )
5. Check indoor condensate water system before installation| |
a. Pour water into drain pan to check whether condensate water could be
discharged smoothly and whether there is leakage| Yes ( )| No ( )
b. Check whether condensate water pipe is tightly sealed to prevent
condensation on the surface of pipe| Yes ( )| No ( )
c. Whether water trap is designed in accordance with the manual attached to
the unit| Yes ( )| No ( )
6. Preparation before debugging| |
a. Whether power voltage is ±10% of the normal range| Yes ( )| No ( )
b. Ensure the power is not temporary| Yes ( )| No ( )
c. Whether the clients and Party A’s inspection experts are in place in time|
Yes ( )| No ( )
d. Whether there are sufficient facilities (ladder and lifting table etc.) to
ensure normal work of operators| Yes ( )| No ( )
e. Whether the unit is pre-heated for 24 hours before powering on for
debugging| Yes ( )| No ( )
7. Other circumstances
Date of requiring debugging: Before date month year
Applicant (seal):|
Signature: Date:| |
Safety Precautions
Caution : Read this manual carefully before installation and use of the unit.
The following standard is applied to this product:
GB/T 18837-2015 GB4706.1-2005
This installation manual is applied to TICA TIMS series household R410A inverter VRF air conditioning units. The manual is subject to change based on improvement on air conditioners without further notice.
Preparation before
- Installation shall be left to alicensed professional. Users shall not install, repair or replace the air conditioning unit by themselves.
- Be sure to use a dedicated power circuit. Make sure the supply voltage fluctuates within ±10% of rated voltage. Power supply should be separate from welding transformer because the latter may cause large voltage fluctuation.
- Get a licensed electrician to install the unit according to national and local power standard, and to check whether line capacity meets requirements and whether power lines are loose or damaged.
- “Electrical control schematic diagram” is attached to theback side of cover plate ofODU control box. Please keep the manual properly for further reference
Precautions installation
- Do not touch heat exchanger fins. Otherwise, it may cause damage to the fins or reduced performance for the unit or finger injury.
- The cover plate for control box must be fastened to prevent incoming of dust and water. The electrical parts must be water proof and away from water sources, other wise electric shock or fire may be caused.
- After installation, be sure to make an air tightness check whether there is pipe line leakage.
Precautions for using R410A refrigerant devices
- Please supplement refrigerating system with liquid refrigerant. In the case of gaseous refrigerant, the composition of refrigerant in the system may change.
- Do not mix into other refrigerants.
- Do not use the following tools ever used for common refrigerants (such as R22):pipeline pressure test devices, filling hoses, leakage detection devices, refrigerant filling base, and refrigerant recovery devices.
- Make sure to use vacuum pump dedicated for R410Aseries.
Precautions at trial operation
-
When the system is powered on for the first time or after being left unused for a long time, ODU power must be connected 24 hours before use. Otherwise, the compressor may be burnt (make sure the air conditioner is in standby mode at the seasons they are needed most).
-
Do not turn on the air conditioner when the panel or protection screen is removed. The moving partsinside the air conditionermay hurt people or otherobjects.
-
Do not touch refrigerant pipeline during operation or just at the end of operation.
The pipeline of the airconditioner may be very hotor cold during its operation,which may lead to scald or frostbite. -
Do not turn off power immediately after the unit stops. Wait at least for five minutes, otherwise water leakage may occur.
-
Please cut off general power supply during seasons theair conditioners are notused, so as to prolong the service life and save energy.
-
All the IDUs and ODUs ofthe same system must be supplied with power simultaneously.
Installation of ODU
Standard model
ODU capacity is indicated by its cooling capacity with the unit kW
Model
| TIMS080 CHR| TIMS100 CHR| TIMS112 CHR| TIMS 125CHR| TIMS 140CHR| TIMS
160CHR| TIMS180 CSREA| TIMS200 CSREA| TIMS224 CSREA
---|---|---|---|---|---|---|---|---|---
Cooling capacity|
8.0kW
|
10.0kW
|
11.2kW
|
12.5kW
|
14.0kW
|
16.0kW
|
18.0kW
|
20.0kW
|
22.4kW
Maximum number of IDUs|
4
|
5
|
5
|
6
|
7
|
8
|
9
|
10
|
11
Model
| TIMS252 CSREA| TIMS285 CSREA| TIMS335 CSREA| | | | | |
Cooling capacity|
25.2kW
|
28.5kW
|
33.5kW
| | | | | |
Maximum number of IDUs|
13
|
15
|
16
| | | | | |
The suffix ’A’:3N-380V 50Hz
Dimensions
Installation space
Requirements for installation position
- The installation position shall have sufficient strength to bear the unit weight and its vibration during operation. If the ODU is installed on a roof, make sure the roof is strong enough and water-proof.
- The ODU shall be installed in a well ventilated place to ensure good heat exchange.
- Places unsuitable for installation:
- The place where acid or alkaline substance or corrosive gas (e.g., sulfur dioxide and hydrogen sulfide) may be produced, easily corroding the unit and leading to refrigerant leakage.
- Places where air conditioning units must not be installed:
- The place where flammable gas or volatile combustibles may be produced. If flammable gas leaks and accumulates around the unit, the unit may explode.
- Do not install the ODU where it is exposed directly to strong wind or typhoon. When conditions permit, add auxiliary equipment to prevent water, snow or direct sunshine
Requirements for ODU installation space:
- Make sure there is enough space above the unit.
- The side with TICA symbol attached shall be the front side of ODU.
- The space required for installing or maintaining an ODU is shown in the following figure.
Handling
Caution:
- Fragile and handle with care.
- The degree of inclination shall not exceed 30° while handling (do not put the unit on its side).
- Keep heat exchange fins safe while handling and installing the unit. In case of any damages, please use fin comb to fix it up.
- Properly dispose of packaging bags and prevent kids from playing with them.
- Use forklift to handle: be careful when inserting the fork into the pocket at the bottom, and prevent fork from damaging the unit or the unit bottom.
- Use crane to handle: tighten hoisting rope according to what is shown in the figure, and keep the unit weight even during hoisting.
- Use two hoisting ropes at least 8 m long and about 20 mm in diameter to support the unit weight. Do not use tying band of the unit for handling.
- After the wooden framework is removed: use paper or cloth as pad between hoisting rope and the unit to prevent damages to the unit body
Placement
- Make sure the ODU is placed firmly at a level place to prevent vibration and noises.
- Use a base larger than the width of ODU’s support legs (66 mm) to support the unit.
- The shock-absorbing pads shall cover the entire bearing surface of the base.
- The unit base shall be at least 200 mm higher above the ground.
- Around the base there should be drain to ensure that the condensate water generated during operation could flow out
- Concrete foundation: the foundation shall be above the ground for at least 150 mm.
- Use anchor bolts, nuts and pads to fasten the ODU tightly to the base. Caution: shock-absorbing pads need to cover the entire bottom of the unit, and the pad thickness is greater than or equal to 20 mm.
- For anti-corrosive models: use rubber pads. If the nut joints get loose, the unit will not be corrosion proof.
Installation of refrigerant piping
Caution:
- Use clean piping that is free from dust, moisture or any other substances.
- Store all the pipelines needed for installation indoors, and keep two ends of pipelines sealed till welding.
- Pass copper pipes into the holes at wall and seal the holes to prevent dirt coming in.
- Do not do ODU piping work on rainy days, lest that moisture and dirt would enter the pipelines.
- Try to reduce bended piping and use bends with larger radius.
- When connecting refrigerant piping, the stop valve of ODU shall be closed completely after refrigerant piping between ODU and IDU is done, and refrigerant leakage test and vacuumizing process are finished.
Limits (allowable values) | Remarks |
---|
H1*1
| When the ODU is at the upper position: ≤ 20 m When the ODU is at the lower
position: ≤ 15 m|
H2*1| ≤ 8m|
The longest piping distance from the first branch pipe| ****
≤ 20m (equivalent)
| ****
L1+L2+L3
LM
| ****
≤ 50 m (actual)
| When the equivalent length of liquid side and gaseous side is greater than
or equal to 90m, increase the length of main pipe at gaseous side
The longest piping distance| ≤ 60 m (actual),≤ 70 m (equivalent)| LM+L1+L2+L3
L3| ≤15 m (equivalent)| a, b, c, d, L3
Total length| Total length ≤ 100 m (actual)| LM+L1+L2+L3+a+b+c+d
- Contact TICA’s engineers when exceeding the above limits.
- The total refrigerant quantity of the unit should not be greater than 6.5 kg, otherwise the unit may fail to operate safely and reliably. Please consult TICA’s engineers for details
Diameters of refrigerant piping
The copper pipe for main pipelines in the figure shall have the sizes chosen
from the following table based on the total capacity of ODUs at the upper
reaches
ODU Capacity
| Air side + liquid side equivalent length < 90 m| Air side + liquid side
equivalent length ≥ 90 m
---|---|---
Liquid pipe (mm)| Gas pipe (mm)| Liquid pipe (mm)| Gas pipe (mm)
8.0kW| 9.52| 15.88| 9.52| 15.88
10.0kW| 9.52| 15.88| 9.52| 15.88
11.2kW| 9.52| 15.88| 9.52| 15.88
12.5kW| 9.52| 15.88| 9.52| 15.88
14.0kW| 9.52| 15.88| 9.52| 19.05
16.0kW| 9.52| 15.88| 9.52| 19.05
18.0kW| 9.52| 19.05| 9.52| 19.05
20.0kW| 9.52| 19.05| 9.52| 19.05
22.4kW| 9.52| 19.05| 9.52| 19.05
25.2kW| 12.7| 22.2| 15.88| 25.4
28.5kW| 12.7| 22.2| 15.88| 25.4
33.5kW| 12.7| 25.4| 15.88| 28.5
- The piping between the last-level branch pipe and IDU shall have the same sizes with IDU piping.
- The piping between branch pipes shall be based on the total capacity of downstream IDUs connected to the piping
Total capacity of connected IDUs| Liquid pipe specifications (mm)| Air pipe
specifications (mm)
---|---|---
X < 16.8| Ф 9.52| Ф 15.88
16.8 ≤ X < 22.5| Ф 9.52| Ф 19.05
22.5 ≤ X < 33.0| Ф 12.7| Ф 22.2
33.0≤ X| Ф 12.7| Ф 25.4
Remarks: The size of the piping between branch pipes shall not be greater than that of cooper pipe at Place A in the figure above.
Installation of branch pipes
Branch pipes shall be selected based on the total capacity of downstream
IDUs connected:
Total capacity of downstream IDUs connected to branch pipes| Model of branch
pipes
---|---
X < 16.8| TBP4022TA
16.8 ≤ X < 22.5| TBP4022TA
22.5 ≤ X < 33.0| TBP4033TA
33.0≤ X| TBP4072TA
The model of branch pipe components and the diameter of main pipe and branch pipe shall be confirmed against working drawings and installation instructions. There should not be sharp turns (90° angle) or other branch pipe components falling within 500 mm of branch pipe components. The straight pipe distance between two adjacent branch pipes shall not be less than 1000 mm.
Branch pipes can be vertically or horizontally installed and as close as possible to the IDU. When installed horizontally, the angle shall be between ±15°.
See the following figure when branch pipes are installed vertically.
Size of branch pipes:
TBP4022TA
TBP4033TA
TBP4072TA
Limits for refrigerant piping
Capacity combination
Remarks : It is recommended that the above value shall not be greater than 100% when selecting models. For scenarios with lower simultaneous usage coefficient, the above value may exceed 100%.
Unit capacity | Single unit |
---|---|
Maximum actual (equivalent) piping length | ≤ 80 (100) m |
Level difference
| Level difference between IDU and ODU| H1 ≤ 20 m (when the ODU is at the
upper position)
H1 ≤15 m (when the ODU is at the lower position)
Level difference among IDUs| H2 ≤ 8 m
Note (1):
- Equivalent length is the converted length after taking into account of pressure losses at elbows.
- Equivalent length = actual pipe length + number of elbows × equivalent length of each elbow
- Equivalent length of every place of branch pipe is 0.5 m, and please refer to the following table for equivalent length of elbows.
Pipe diameter | Equivalent length |
---|
Elbow (m)
Ф 9.52| 0.18
Ф 12.7| 0.2
Ф 15.88| 0.25
Ф 19.05| 0.35
Ф 22.23| 0.4
Ф25.4| 0.45
Ф 28.6| 0.5
Ф 31.8| 0.55
Precautions when breaking through the knockout
- Do not damage the unit shell when trying to break through the knockout.
- Ensure the hole to be trimmed after being broke through with a hammer, and protect it from corrosion by painting.
- When passing the wire through knockout, put grommet in the hole or wrap wires with adhesive tape for protection.
Air tightness test, vacuuming and supplementing refrigerant
For TIMS units, vacuum pump, pressure gauge, compound pressure gauge and charging hose used for R410A refrigerant are different from those used for R22 refrigerant. Make sure to use R410A dedicated tools.
Air tightness test
Caution:
- After piping work is completed, make sure to do air tightness test for IDU and piping.
- Do not use flammable gas or air (oxygen) as pressurized gas, otherwise fire or explosion may be caused; use nitrogen only.
Steps:
- Step 1 : Increase pressure by 0.3 MPa for three minutes, and check whether there are major leakage points.
- Step 2 : Continue to increase pressure to 1.5 MPa for three minutes, and check whether there are minor leakage points.
- Step 3 : Continue to increase pressure to 4.0 MPa for 24 hours, and check whether there are micro leakage points
Vacuuming
Caution:
- Use vacuum pump with volume above 4 L/s. The vacuum degree must support -755 mmHg and lower.
- To prevent lubricating oil from flowing in the reverse direction to refrigerant system, use vacuum pump with electronic one-way valve.
- Vacuum air pipe and liquid pipe at the same time. Before vacuuming, make sure again that stop valves at air and liquid sides of IDUs are closed.
- Use R410A dedicated tools, such as pressure gauge and liquid supplementing pipe.
Use nitrogen in air tightness test instead of oxygen, flammable and toxic gas, or water. Use R410A dedicated pressure gauge, with measuring range above 4. 5 MPa. Connect high pressure pipe and low pressure pipe and increase pressure for them at the same time, without connecting to ODU. After passing air tightness test, if not used immediately, release system pressure to 0.2-0.3 MPa and then seal it.
Supplementing refrigerant
Principles:
Before delivery, the ODUs have been filled with a certain amount of
refrigerant, but which cannot meet the needs of extended pipes. So refrigerant
has to be added according to the actual length of refrigerant piping at
installation site.
Steps:
- Close compound pressure gauge, replace vacuum pump with filling tank connected with charging pipe. Make sure the air is drained completely, and connect the joints of filling tanks and put the tank mouth down on the platform scale.
- Set the quantity to be filled at the electronic scale, and successively open the valve of filling tank and valve of compound pressure gauge to fill the system with refrigerant. When reaching the limits, immediately close valve of filling tank and disconnect connection pipes
Caution:
- For refrigerant tank with siphon: the tank needs not to be put upside down because the siphon can reach the tank bottom.
- If using R410A filling tank without siphon, make sure the tank is put upside down in the filling process, which is shown as below
Calculation of amount to be filled (R410A):
Liquid pipe diameter (mm) | 6.35 | 9.52 | 12.7 | 15.88 | 19.05 | 22.2 |
---|---|---|---|---|---|---|
Supplemented refrigerant quantity (g/m) | 22 | 54 | 110 | 170 | 260 | 360 |
Supplemented refrigerant quantity = Σ liquid pipe length at various diameters × supplemented refrigerant quantity per meter × 0.8
Electrical control installation
Wiring cautions
Cautions for power wiring
- Use copper wire as power wire and do not make it too tight.
- All the IDUs and ODUs of the same system must be supplied with power simultaneously.
- The distribution box shall be provided with a set of electric leakage protection device and air switch for each module.
- Make sure all the earth lines of the unit are connected to ground securely. Do not connect earth lines to lightning devices, telephone line, gas pipe or tap water pipe. Improper grounding may cause electrical shock or fire.
Cautions for communication line wiring
- TIMS series household inverter VRF air conditioning unit has both high voltage (power) line and control (communication) line. Do not connect power line to the connecting terminal of communication cables!
- The total length of communication line is less than 1000 m.
- The shielding layer of communication line must be connected to earth lines of each module and IDUs securely.
- Communication lines are well connected before power on.
- Do not remove the power plug with power on, lest the communication chips would be damaged. To prevent high voltage signal from disturbing control signal, shielded twisted pair must be used.
- Try to select shielded twisted pair with dense shielding layers and smaller lay. Control signal has two polarities A and B, and different polarities cannot be connected, otherwise communication failures may be caused;
As shown in the figure below.
When power line is parallel with communication line, they shall be covered by respective conduits and kept at some distance away.
Wiring specifications
Notes:
- As wires need to be bent during installation process, it is recommended to use flexible wires, otherwise installation may fail.
- The parameters in the table below are corresponding to multiple strands of flexible copper wires. If other wires are selected, please refer to electrician’s manual based on wiring current provided in the table.
- For safety purpose, do not carry out wiring work based on rated current, for the operating conditions may be varied with seasons.
Table of ODU wiring specification
ODU model| Power supply| Voltage range (V)| General power line| Fuse circuit
breaker (A)| Communication line
---|---|---|---|---|---
8.0kW|
Single phase 220V/50Hz
| 198/242| 3×4 mm2| 25|
10.0kW| 198/242| 3×6 mm2| 32|
0.75-1.25 mm2
polyethylene shielded twisted pair
11.2kW| 198/242| 3×6 mm2| 32
12.5kW| 198/242| 3×6 mm2| 32
14.0kW| 198/242| 3×6 mm2| 40
16.0kW| 198/242| 3×6 mm2| 40
18.0kW| 198/242| 3×6 mm2| 40
18.0kW|
Three phase 380V/50Hz
| 342/418| 5×4 mm2| 20
20.0kW| 342/418| 5×4 mm2| 20
22.4kW| 342/418| 5×4 mm2| 20
25.2kW| 342/418| 5×6 mm2| 30
28.5kW| 342/418| 5×6 mm2| 30
33.5kW| 342/418| 5×6 mm2| 30
Note: If the power cord is damaged, it must be replaced by a professional from the manufacturer, its maintenance department or similar in order to avoid danger. For parts used outdoors, the power cord should not be lighter than the neoprene armored flexible cord. If the fuse is damaged, it must be replaced by a professional (fuse size: 10A 250V)
Electrical wiring
Communication wiring
ODU Control Panel
Mechatronic control panel (8.0 kW and 10.0 kW)
Code settings
-
a. ‘0’ for the status above, and ‘1’ when dialed to the “ON” position.
-
b. Description on ODU address setting: based on the specific situation after installation is completed.
-
c. The unit must be powered on again after the DIP switch is reset.
-
d. 0 indicates normal, while 1 indicates silent mode for No. 4 switch.
SW2: DIP switch of ODU capacity
Cooling Capacity (kW) | SW2 |
---|---|
8.0 | 2 |
10.0 | 3 |
11.2 | 4 |
12.5 | 5 |
14.0 | 6 |
16.0 | 7 |
ODU capacity code has been set properly before delivery. Please check whether the setting is right.
11.2 kW – 33.5 kW
S1: model setting
BIT5| BIT6| BIT7| BIT8| |
---|---|---|---|---|---
Single phase: 0
| 0| 0| 0| CHT| BEDC
0| o| 1| CHR| Reserved
0| 1| 0| CHTF| Reserved
0| 1| 1| CHRF| Reserved
1| 0| 0| DHTF| BEDC
1| 0| 1| DHRF| Reserved
1| 1| 0| Reserved| Reserved
1| 1| 1| Reserved| Reserved
Three phase: 1
| 0| 0| 0| CHTA| Reserved
0| 0| 1| CHRA| BERA
0| 1| 0| CHTAF| Reserved
0| 1| 1| CHRAF| BERA
1| 0| 0| DHTAF| Reserved
1| 0| 1| DHRAF| Reserved
1| 1| 0| Reserved| Reserved
1| 1| 1| Reserved| Reserved
BIT1| BIT2| BIT3| BIT4| Remarks| Value
---|---|---|---|---|---
Reserved| Reserved| Reserved| Reserved| /| /
BIT1| BIT2| BIT3| BIT4| Capacity
---|---|---|---|---
0| 0| 0| 0| 0
0| 0| 0| 1| 8 kW
0| 0| 1| 0| 10 kW
0| 0| 1| 1| 11.2 kW
0| 1| 0| 0| 12.5 kW
0| 1| 0| 1| 14 kW
0| 1| 1| 0| 16 kW
0| 1| 1| 1| 18 kW
1| 0| 0| 0| 20 kW
1| 0| 0| 1| 22.4 kW
1| 0| 1| 0| 25.2 kW
1| 0| 1| 1| 28.5 kW
1| 1| 0| 0| 33.5 kW
1| 1| 0| 1| /
1| 1| 1| 0| /
1| 1| 1| 1| /
MEU1| Set parameters| |
---|---|---|---
| SP01| Set centralized control address| AR01, AR02……AR99
| SP02| Set baud rate for centralized monitoring| 1920Q 9600
| SP03| Silent mode| 0: non-silent mode
| | | 1: temperature trend control
| | | 2: smart silent mode
| | | 3: forced silent mode
| SP09| Manual power on/off| 0003: cooling fully on, 0004: cooling fully off
| | | 0009: heating fully on, 0010: heating fully off
| SP10| Manual address clearing| Choose 0033 and then K4
| SP11| Manual oil return| Choose 0015 and then K4
| SP12| Reserved|
MEU2| Display parameters| |
| Choose KEY2/KEY3
to scroll up/down
| System parameters| 00-38
|
Current fault code
|
E* EC
MEU3| Set features| |
| | Forced defrosting| Press and hold K1 for 5s and then release the button
| | Open valve| Press and hold K4 for 5s and then release the button
- KEY1 : Click KEY1 menu key to cyclically display MEU1/MEU2/MEU3. Then click KEY4 to confirm your choice and enter the next level of menu.
- KEY2/KEY3 : After entering the second-level menu, click KEY2/KEY3 to scroll up and down, and click KEY4 to confirm to enter the next level of menu.
- KEY4 : confirm key
Table of fault codes of digital tubes:
Fault Code | Content |
---|---|
E000 | Disconnection of inverter high pressure switch |
E001 | Fan drive fault |
E002 | Inverter compressor overload |
E003 | Too high air discharge temperature |
E004 | Inverter drive communication fault |
E005 | Fan drive communication fault |
E006 | Inverter drive overheat fault |
E007 | Inverter drive fault |
E008 | THo1 sensor fault |
E009 | THo2 sensor fault |
E010 | THo3 sensor fault |
E011 | THo4 sensor fault |
E012 | THo5 sensor fault |
E013 | THo6 sensor fault |
E014 | THo7 sensor fault |
E015 | / |
E016 | / |
E017 | / |
E018 | / |
E019 | Fault 8032 (The unit generates an alarm without shutdown) |
E020 | IDU and ODU not matched |
E021 | Low pressure sensor fault |
E022 | High pressure sensor fault |
E023 | Phase sequence protection |
E024 | / |
E025 | / |
E026 | / |
E027 | / |
E028 | / |
E029 | / |
E030 | / |
E031 | / |
E032 | 4-way valve fault (insufficient pressure difference) |
E033 | / |
E034 | Insufficient refrigerant |
E035 | / |
E036 | / |
E037 | Protection enabled when ambient temperature too high/low |
--- | --- |
E038 | No communication |
E039 | System failure |
E040 | Protection against high AC voltage |
E041 | Protection against low AC voltage |
E042 | Protection against high AC current |
E043 | Disconnection of low pressure switch |
E044 | Heat exchanger high temperature protection |
E045 | Compressor reverse rotation fault |
ECXX | IDU communication fault |
ECXX indicates communication failure between IDU and ODU, and EC00 indicates IDU 0#, and EC01 indicates IDU 1#, and so on.
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