TCL TAC-09CSD/XAB1 User manual
TCL Air Conditioner Service Manual
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ON/OFF type air conditioner
Service Manual
Models
TAC-09CSD/XAB1
TAC-12CSD/XAB1
TAC-18CSD/XAB1
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CONTENTS
PART Ⅰ TECHNICALINFORMATION.............................................................................3
1. IMPORTANTNOTICE.............................................................................................................3
2. REFRIGERATIONCYCLEDIAGRAM.............................................................................................4
3. ELECTRICDIAGRAM.............................................................................................................5
3.1Wiringdiagram........................................................................................................5
3.2PCBLAOUT................................................................................................................8
4. ELECTRONICCONTROLLERINTRODUCTION..............................................................................11
4.1Electroniccontroller................................................................................................11
PART Ⅱ INSTALLATIONANDMAINTENANCE..............................................................16
1. NOTESFORINSTALLATIONANDMAINTENANCE.........................................................................16
2INSTALLATION....................................................................................................................24
2.1InstallationDimensionDiagram.............................................................................24
2.2Accessory................................................................................................................2 5
2.3Position...................................................................................................................26
2.4Electricityandwiring..............................................................................................26
2.5IDUInstallation.......................................................................................................26
2.6ODUInstallation.....................................................................................................29
2.7Vacuumandgasleakagetest.................................................................................30
2.8Finaltest.................................................................................................................30
3. MAINTENANCE.................................................................................................................31
3.1Failurecode............................................................................................................31
3.2Troubleshooting....................................................................................................32
4. DISASSEMBLYIDU&ODU.................................................................................................35
4.1.IDUDisassembly....................................................................................................35
4.2ODUAssembly........................................................................................................39
APPENDIX........................................................................................................................44
Appendix1ThecomparisontableofCelsius‐Fahrenheittemperature.........................44
Appendix2ThePipelengthandGascharging.............................................................45
Appendix3PipesFlaring..............................................................................................46
Appendix4THERMISTORTEMPERATURECHARACTERISTICS.......................................47
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Part Ⅰ Technical Information
1. Important Notice
This service manual is intended for use by individuals possessing adequate
backgrounds of electrical, electronic
and mechanical experience. Any
attempt to repair the appliance may result in personal injury and property
damage. The manufacturer or seller cannot be responsible for the
interpretation of this information, nor can
it assume any liability in
connection with its use.
The information, specifications and parameter are subject to change due to
technical modification or improvement
without any prior notice. The
accurate specifications are presented on the nameplate label.
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2. Refrigeration cycle diagram
Cool only
Heating
Liquid side
2-way valve
Gas side
3-way valve
Compressor
4-way valve
Muffler
Muffler
Heat exchange
(Condenser)
Heat exchange
(Evaporator)
Check valve
Cooling
Heating
Capillary
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3. Electric Diagram
3.1 Wiring diagram
MODEL：TAC-09CSD/XAB1
INDOOR UINT:
OUTDOOR UINT:
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MODEL：TAC-12CSD/XAB1
INDOOR UINT:
OUTDOOR UINT:
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MODEL：TAC-18CSD/XAB1
INDOOR UINT:
OUTDOOR UINT:
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3.2 PCB LAOUT（Only for reference）
Indoor unit
Indoor PCB
7k, 9K, 12K, 18K
A010268
24K
A010270
1 ODU AC power output
2 Fuse
3 Transformer out
4 IDU AC power input
5 AC motor driver
6 IDU/ODU wiring
connection-N connector
7 Power supply-N connector
8 Anion connector
9 IDU/ODU communication
wiring
10 Up-Down swing connector
11 Left-Right swing connector
12 Display
13 Emergency button
14 AC Motor feedback
15 Temperature sensor
connector
16 WIFI connector
1
2
3
4
5 6 7 8 9 10 11 12
13
14
15
16
1ODU AC power output
2Fuse
3ODU AC power input
4DC fan motor connection
5IDU/ODU wiring connection --N
connector
6Power supply --N connector
7Anion connector
8IDU/ODU communication wiring
9Left-Right swing connector
10 Up-Down swing connector
11 Display
12 Emergency button
13 Temperature sensor connection
14 WIFI connection
1
2
3
4 5 6 7 8 910 11 12
13
14
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7K, 9K, 12K, 18K
Top vi e w
A010235
7K, 9K, 12K, 18K，24K
Top vi e w
A010254
1 ODUACpoweroutput
2 Fuse
3 ODUACpowerinput
4 ACmotordriver
5 IDU/ODUwiringconnection‐N
connector
6 Powersupply‐Nconnector
7 Left‐Rightswingconnector
8 Up‐Downswingconnector
9 ACMotorfeedback
10 Display
11 Emergencybutton
12 Temperaturesensorconnector
13 TransformerIN
14 TransformerOUT
15 Anionconnrctor
1 TransformerIN
2 ODUACpoweroutput
3 Fuse
4 ODUACpowerinput
5 ACmotordriver
6 IDU/ODUwiring
connection‐Nconnector
7 Powersupply‐Nconnector
8 Left‐Rightswingconnector
9 Up‐Downswingconnector
10 ACMotorfeedback
11 Display
12 Emergencybutton
13 Temperaturesensor
connector
14 WIFIconnection
15 TransformerOUT
16 Anionconnrctor
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7K, 9K, 12K, 18K，24K
Top vi e w
A010422
1 TransformerIN
2 ODUACpoweroutput
3 Fuse
4 ODUACpowerinput
5 ACmotordriver
6 IDU/ODUwiring
connection‐Nconnector
7 Powersupply‐N
connector
8 Left‐Rightswing
connector
9 Up‐Downswing
connector
10 ACMotorfeedback
11 Emergencybutton
12 Temperaturesensor
connector
13 WIFIconnection
14 Display
15 TransformerOUT
16 Anionconnrctor
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4. Electronic Controller Introduction
4.1 Electronic controller
RT-------Room Temperature.
IPT------Indoor Pipe (Coil) Temperature.
ST------Indoor Setting Temperature.
OPT--- Outdoor Pipe Temperature.
CRT--- Compensated Room Temperature.
IDU--- Indoor unit
ODU--- Outdoor unit.
Note: When AC finishing installation, because of the air ventilation and the distance of temperature test sensor to
different location of the house, the temperature for IDU PCB control need compensation.
1）. Cooling mode. CRT=RT;
2）. Heating mode. CRT=RT-3℃ ----- Split AC.
4.1.1 Auto mode
5.2.1.1. The set temperature can be adjusted from 16-31℃ (61-88℉) on auto mode, the operation of fan speed and
vane position according to preset.
5.2.1.2. Operation
When unit set to auto mode, it will work on cooling, heating or fan mode totally according to Δt --the temperature
difference between RT and ST shown as table:
Mode Δt=RT-ST
COOLING Δt >1℃
FAN -1℃≤Δt≤ 1℃
HEATING Δt <-1℃
4.1.2 Cooling mode
4.1.2.1. Temperature control :16-31℃(61-88℉), and the operation of fan speed and vane position according to preset.
4.1.2.2. Compressor and process control
1). When RT-ST≥1℃ the compressor starts up working, AC operates as customer preset;
2). When:
a. RT-ST≥1℃, the compressor will start up operation once it stops 3 minutes, and unit without any other
protection or failure code.
b. RT-ST≤-1℃, the compressor will stop working while it works for 6 minutes or more continuously.
c. -1℃＜RT-ST＜1℃, the compressor keeps original state.
3). The compressor will also stop working while unit:
a. switched off.
b. under protection.
c. changed to fan mode.
4). Under normal operation, the compressor can be stopped by program until it works for 6 min at least once starts
up.
5). In the process of unit operation, once the compressor ceased, it should be 3 min delay for the next procedure.
4.1.2.3. ODU Fan motor control:
1). While unit:
a. switched off.
b. under protection.
c. to the set temperature.
The compressor stops working, and the fan motor will stop operation after 50s delay.
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2). When switch on unit on cooling mode, ODU fan motor will delay 5s after compressor starts up.
4.1.2.4. When ODU failure or stops for protection, IDU works as preset.
4.1.2.5. Anti-frosting protection
While condition a), b) matched, the AC unit transferred to anti-frosting protection.
a). After the compressor continual works for 6 minutes, and tested IPT≤0℃ for 3 minutes continuously.
b). After the compressor continual works 6 minutes, and tested IPT≤-2℃ for 3 seconds continuously.
c). AC unit quit protection while IPT≥10℃.
4.1.3 Dry mode
4.1.3.1. Temperature control: 16~31℃.
Fan speed: low
Vane blade position: as customer preset
4.1.3.2. When ODU failure or stops for protection, IDU works as preset.
4.1.3.3. Compressor and process control
1). When RT-ST≥1℃, the compressor starts up working, AC operates as customer preset;
2). When
a. RT-ST＞2℃, the compressor will start up operation once it stops 3 minutes, and unit without any other
protection or failure code.
b. RT-ST＜-2℃, the compressor will stop working while it works 6 minutes or more continuously.
c. -2℃≤RT-ST≤ 2℃，the compressor will stop working while it works for 6 minutes, after 4 minutes it will start
working again.
3). The compressor will also stop working while unit:
a. switched off.
b. under protection.
c. changed to fan mode.
4). Under normal operation, the compressor can be stopped by program until it works for 6 min at least once starts
up.
5). In the process of unit operation, once the compressor ceased, it should be 3 min delay for the next procedure.
4.1.3.4. ECO and sleep mode: Invalid.
4.1.3.5. Anti-frosting protection
While any of condition a), b), or c) matched, the AC unit transferred to anti-frosting protection.
a). After the compressor continual works for 6 minutes, and tested IPT≤0℃ for 3 minutes continuously.
b). After the compressor continual works 6 minutes, and tested IPT≤-2℃ for 3 seconds continuously.
c). If the unit works as 6 minutes ON, 4 minutes OFF, and tested IPT≤0℃ for 3 minutes continuously.
d). AC unit quit protection while IPT≥10℃.
4.1.4 Heating mode
4.1.4.1. Temperature control: 16-31℃.
4.1.4.2. Compressor and process control.
1). When ST-CRT≥1℃, the compressor starts up working, AC operates as customer preset;
2). When
a. ST-CRT≥1℃, the compressor will start up operation once it stops 3 minutes, and unit without any other
protection or failure code.
b. ST-CRT≤-1℃，the compressor will stop working while it works 6 minutes or more continuously.
c. -1℃＜ST-CRT＜1℃，the compressor keeps original state.
3). The compressor will also stop working while unit:
a. switched off.
b. under protection.
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c. changed to fan mode.
4). Under normal operation, the compressor can be stopped by program until it works for 6 min at least once starts
up.
5). In the process of unit operation, once the compressor ceased, it should be 3 min delay for the next procedure.
4.1.4.3. IDU time delay: When compressor stops or unit switches off while in heating mode, IDU fan motor keeps
working for 50 seconds.
4.1.4.4. ODU Fan motor control:
1). While unit:
a. To be switched off
b. Under protection.
c. To the set temperature
The compressor stops working, and the fan motor will stop operation after 50s delay.
2). When switch on unit on heating mode, ODU fan motor will start up 3s earlier before compressor starts up.
3). In the process of defrosting, the fan motor will stop operation 39s delay after compressor stopped.
4). defrosting finish, the compressor stops operation, the fan motor will start working simultaneously.
4.1.4.5. 4-way valve control
1). On Cooling/Dry/Fan mode,4-way valve: OFF,
when unit switched on heating mode,4-way valve: ON.
2). When heating mode switched off, or changed from heating to other modes, the 4-way valve will be OFF 2 min
delay after the compressor stops working.
3). The 4-way valve will be OFF 2 min delay while unit stops working caused by any kinds of protection.
4). In the process of defrosting, 4-way valve will be OFF 39s delay after compressor stopped.
5). When defrosting finish, the compressor stops operation, 4-way valve will be ON after 20s delay.
4.1.4.6. Defrost
Note:
t1: The compressor continuous works time.
t2: The compressor accumulated working time.
t3: The tested max value of “IPT-RT” after compressor works for 8 minutes till to current.
△T: The current value of “IPT-RT” while compressor works. (the instantaneous value)
1). When AC unit works matching a), b) and c):
a. t1 ≥ 120 minutes,
b. t2 ≥ 45 minutes,
c. t3 ≥△T + 4℃ .
it triggers to defrosting.
Defrosting start up: Compressor stops working, and re-starts operation after 44s delay;
2). AC unit quit defrosting automatically after 10 minutes operation.
Defrosting end off: Compressor stops working, and re-starts after 25s delay;
4.1.4.7. Cold air prevention:
This function intends to prevent cold air from being discharged when the heating operation starts up
1). IDU fan motor cold air prevention
①.When RT＜24℃:
a. If ITP＞31℃ while compressor works for 5 min, fan motor will work according to preset fan speed.
b. If IPT≤31℃, fan motor stops working while compressor operation within 2min, if IPT≥27℃, fan motor works in
low speed 2 min, then change to preset speed.
②When RT≥24℃:
a. Within 2 min after compressor starts up working, once IPT＞27℃, fan motor will change to preset speed.
b. After compressor starts working 2 min, fan motor changes to preset speed directly.
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2). Vane blade operation for cold air prevention.
a.
If the vane works on status of non-swing: While IPT increase to a special degree, the vane blade will change
the position to:
①Default angle; or
②Previous position; or
③Customer preset.
The above operation can work one time only, when compressor stops working, the unit will inspect the function
once again.
b.
If the vane works on swing: When IDU quits from cold air prevention, vane operate as preset.
4.1.4.8. “8℃” Heating
When function effective, it will make sure the room temperature not lower than 8℃, unit works on heating mode.
4.1.5 Fan mode
4.1.5.1. The temperature setting: 16~31℃(61-88℉),
Fan speed and vane position: as preset. The function for remote controller 58E only.
4.1.5.2. For above function, when unit preset to auto fan mode, the fan motor will change its operation speed
based on the temperature difference of ambient and preset temperature.
4.1.5.3. ODU always OFF.
4.1.6 Timer
The unit has times control, when the unit meet the timer preset, it will be switched on or off automatically.
4.1.6.1 TIMER ON
1). TIMER ON can be set only when the air conditioner is OFF.
2). Press TIMER on the remote control ONCE to enter time setting.
3). Press “▲” or “▼” to set the time for unit to start working.
4). Set other function as MODE, FAN SPEED, SWING etc.
5). Press TIMER ONCE AGAIN to confirm the TIME ON setting
4.1.6.2 TIMER OFF
1). TIMER OFF can be set only when the air conditioner is ON.
2). Press TIMER on the remote control ONCE to enter time setting.
3). Press “▲” or “▼” to set the time for unit to stop working.
4). Press TIMER ONCE AGAIN to confirm the TIME OFF setting
Note: In case of no selection for the time setting within 10s, the timer function will be OFF automatically.
4.1.7 Sleeping mode
While AC works in sleeping mode, the light of POWER SUPPLY and SLEEP always ON, and the temperature
display will be OFF after 15s.
In this mode, the AC unit works according to the SLEEP CURVE as designed.
Sleeping mode the unit can work 10 hours continuously, after that it will quit from this mode and work as previous
presetting.
℃
4
2
0
2℃
4℃
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4.1.8 Emergency switch
When the EMERGENCY switch is pressed one time, COOLING mode is selected and if it pressed again within 3s,
HEATING mode selected, while press once again, the unit will be switched off.
When the remote controller out of function, batteries lost power, for example, the EMERGENCY button in the
front of indoor unit can be used for function test.
NOTE: Do not press the EMERGEMCY switch during normal operation.
4.1.9 Auto-restart function
While air conditioner is operating in one mode, all of its operation data, such as working mode, preset
temperature etc. would be memorized into IC by main PCB. If power supply cut off due to reasons and recover
again, the AUTO-RESTART function will set
synchronously and the air conditioner would work at the same
mode as before.
Note: The function setting:
Within 3 min while power on unit, set the unit on cooling mode, set temperature 30℃, and mid fan speed, press
the ECO button 10 times within 8s, the AUTO-RESTART will be activated.
4.1.10 Over heat protection for Heating mode
1). If:
a. IPT≥62℃, compressor and ODU Fan stop working for over heat protection.
b. IPT≥54℃, ODU Fan stops working. IDU fan motor and compressor keeps original state.
2). When IPT≤48℃, the compressor and ODU Fan restart works to quit overheat protection.
3). If unit have 6 times Overheat Stop-working Protection continuously, or tested IPT ≥ 62℃ for 3mins
continuously while compressor stop working, this protection can’t be recovered unless press ON/OFF button, and
unit will show failure code “P7”.
Note:
In the process of operation, once the compressor runs continuously more than 6 min, the counter of overheat
stop-working protection will be reset to zero and start a new counting process.
The failure and times for protection will eliminate immediately once the unit to be switched off, on fan mode or
changed to be heating mode from others.
4.1.11 Complementary
4.1.11.1 Energy saving (ECO)
Function effective on Cooling and Heating mode only.
On cooling mode, the set temperature range from 26℃(79℉) to 31℃(88℉).
on heating mode, from 16℃(61℉) to 25℃(77℉).
4.1.11.2 TURBO
Function effective on Cooling, Heating, Fan and Auto modes, and fan speed operates on highest.
4.1.12 Calibration Test Mode:
Within 3 min while indoor unit switch on, and set the unit as:
1) Cooling mode.
2) set temperature to 30℃.
3) Mid-fan speed.
by press ECO button 7 times within 8s, the unit will change to calibration test mode, and the buzzer sounds 3
times.
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PART Ⅱ Installation and Maintenance
1. Notes for installation and maintenance
Safety Precautions
Important!
Please read the safety of precautions carefully before installation and maintenance. The following contents are
very important for installation and maintenance. Please follow the instructions bellow.
● The installation or maintenance must accord with the instructions.
● Comply with all national electrical codes and local electrical codes.
● Pay attention to the warnings and cautions in this manual.
● All installation and maintenance shall be performed by distributor or qualified person.
● All electric work must be performed by licensed technician according to local regulations and instructions
given in this manual.
● Be caution during installation and maintenance. Prohibit incorrect operation to prevent electric shock,
casualty and other accidents.
Warnings
Electrical safety Precautions.
1) Cut off the power supply of air conditioner before checking and maintenance.
2) The air conditioner must apply specialized circuit and prohibit share the same circuit with other appliances.
3) The air conditioner should be installed in suitable location and ensure the power plug is touchable.
4) Make sure each wiring terminal is connected firmly during installation and maintenance.
5) Have the unit adequately grounded. The grounding wire can’t be used for other purposes.
6) Must apply protective accessories such as protective boards, cable-cross loop and wire clip.
7) The live wire, neutral wire and grounding wire of power supply must be corresponding to the live wire, neutral
wire and grounding wire of the air conditioner.
8) The power cord and power connection wires can’t be pressed by hard objects.
9) If power cord or connection wire is broken, it must be replaced by qualified person.
10) If the power cord or connection wire is not long enough, please get the specialized power cord or connection
wire from the manufacture or distributor. Prohibit prolong the wire by yourself.
11) For the air conditioner without plug, an air switch must be installed in the circuit. The air switch should be
all-pole parting and the contact parting distance should be more then 3mm.
12) Make sure all wires and pipes are connected properly and the valves are opened before energizing.
13) Check if there is electric leakage on the unit body. If yes, please eliminate the electric leakage.
14) Replace the fuse with a new one of the same specification if it is burnt down, don’t replace it with a cooper
wire or conducting wire.
15) If the unit is to be installed in a humid place, the circuit breaker must be installed.
Installation Safety Precaution
1) Select the installation location according to the requirement of this manual. (See the requirements in
installation part).
2) Handle unit transportation with care, the unit should not be carried by only one person if it is more than 20kg.
3) When installing the indoor unit and outdoor unit, a sufficient fixing bolt must be installed, make sure the
installation supporter is firm.
4) Ware safety belt if the height of working is above 2m.
5) Use equipped components or appointed components during installation.
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6) Make sure no foreign objects are left in the unit after finishing installation.
Improper installation may lead to fire hazard, explosion, electric shock or
injury.
Safety precautions for Installing and Relocating the unit.
To ensure safety, please be mindful of the following precautions.
Warnings
1) When installing or relocating the unit, be sure to keep the refrigerant circuit free from air or substances other
than the specified refrigerant.
Any presence of air or other foreign substance in the refrigerant circuit will cause system pressure rise or
compressor rupture, resulting in injury.
2) When installing or moving this unit, do not charge the refrigerant which is not comply with that on the
nameplate or unqualified refrigerant.
Otherwise, it may cause abnormal operation, wrong action, mechanical malfunction or even series safety
accident.
3) When refrigerant needs to be recovered during relocating or repairing the unit, be sure that the unit is running
in cooling mode. Then, fully close the valve at high pressure side (two-way valve). About 30-40 seconds later,
fully close the valve at low pressure side (3-way valve), immediately stop the unit and disconnect power. Please
note that the time for refrigerant recover should not exceed 1 minute.
If refrigerant recovery takes too much time, may be cause compressor overheat, resulting in injury.
4) During refrigerant recovery, make sure that two-way valve and 3-way valve are fully closed and power is
disconnected before detaching the connecting pipe.
If compressor starts running when the valves is open and connecting pipe is not yet connected, air will be sucked
in and cause pressure rise and then compressor overheat or gas leak, resulting in injury.
5) When installing the unit, make sure that connecting pipe is securely connected before the compressor starts
running.
If compressor starts running when the valves is open and connecting pipe is not yet connected, air will be sucked
in and cause pressure rise and then compressor overheat or gas leak, resulting in injury.
6) Prohibit installing the unit at the place where there may be leaked corrosive gas or flammable gas.
If there leaked gas around the unit, it may cause explosion and other accidents.
7) Do not use extension cords for electrical connections. If the electric wire is not long enough, please contact a
local service center authorized and ask for a proper electric wire.
Poor connection may lead to electric shock or fire.
8) Use the specified types of wires for electrical connections between the indoor and outdoor units. Firmly
clamp the wires so that their terminals receive no external stresses.
Electric wires with insufficient capacity, wrong wire connections and insecure wire terminals may cause
electric shock or fire.
Introduction R32, R290 air conditioner installation
1) Introduction to Refrigerants R32 & R290
The refrigerants used for air conditioners are environmentally friendly hydrocarbons R32 and R290. The
two kinds of refrigerants are combustible and odorless. Moreover, they can burn and explode under certain
condition. However, there will be no risk of burning and explosion if you comply with the following table to
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install your air conditioner in a room with an appropriate area and use it correctly.
Compared with ordinary refrigerants, Refrigerants R32 & R290 are environmentally friendly and do not
destroy the ozone sphere and that their values of greenhouse effect are also very low.
2) R32/R290 air conditioner installation area requirement
m1=(4m3)×LFL, m2=(26m3) ×LFL, m3=(130m3) ×LFL
Where LFL is the lower flammable limit in kg/m3, R290 LFL is 0.038kg/m3, R32 LFL is 0.306kg/m3.
For the appliances with a charge amount m1<M<m2:
The maximum charge in a room shall be in accordance with the flowing: Mmax=2.5×(LFL)(5/4) ×h0×A1/2
The required minimum floor area Amin to install an appliance with refrigerant charge M(kg) shall be in
accordance with following: Amin= (M/ (2.5 x (LFL)(5/4) x h0)) 2
Where:
Mmax is the allowable maximum charge in a room, in kg;
M is the refrigerant charge amount in appliance, in kg;
Amin is the required minimum room area, in m2;
A is the room area, in m2;
LFL is the lower flammable limit, in kg/m3;
h0 is the installation height of the appliance, in meters for calculating Mmax or Amin, 1.8 m for wall mounted;
Table GG.1 - Maximum charge (kg)
Category LFL
(kg/m3)
h0
(m)
Floor area (m2)
Maximum charge (kg)
4 7 10 15 20 30 50
R290 0.038
0.6 0.05 0.07 0.08 0.1 0.11 0.14 0.18
1 0.08 0.11 0.03 0.06 0.09 0.2 0.3
1.8 0.15 0.2 0.24 0.29 0.34 0.41 0.53
2.2 0.18 0.24 0.29 0.36 0.41 0.51 0.65
R32 0.306
0.6 0.68 0.9 1.08 1.32 1.53 1.87 2.41
1 1.14 1.51 1.8 2.2 2.54 3.12 4.02
1.8 2.05 2.71 3.24 3.97 4.58 5.61 7.254
2.2 2.5 3.31 3.96 4.85 5.6 6.86 8.85
Table GG.2 - Minimum room area (m2)
Category LFL
(kg/m3)
h0
(m)
Charge amount (M) (kg)
Minimum room area (m2)
R290 0.038
0.152kg 0.228kg 0.304kg 0.456kg 0.608kg 0.76kg 0.988kg
0.6 / 82 146 328 584 912 1514
1 / 30 53 118 210 328 555
1.8 / 9 16 36 65 101 171
2.2 / 6 11 24 43 68 115
R32 0.306
1.224kg 1.836kg 2.448kg 3.672kg 4.896kg 6.12kg 7.956kg
0.6 / 29 51 116 206 321 543
1 / 10 19 42 74 116 196
1.8 / 3 6 13 23 36 60
2.2 / 2 4 9 15 24 40
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Caution:
Please contact the nearest after-sale service center when maintenance is necessary. At the time of
maintenance, the maintenance personnel must strictly comply with the Operation Manual provided by
the corresponding manufacturer and any non-professional is prohibited to maintain the air conditioner.
It is necessary to comply with the provisions of gas-related national laws and regulations.
It is necessary to clear away the refrigerant in the system when maintaining or scrapping an air
conditioner.
When filling the combustible refrigerant, any of your rude operations may cause serious injury or
injuries to human body or bodies and object or objects.
A leak test must be done after the installation is completed.
It is a must to do the safety inspection before maintaining or repairing an air conditioner using
combustible refrigerant in order to ensure that the fire risk is reduced to minimum.
3) Installation Safety
Installation Safety Principles
Site Safety
Open Flames Prohibited Ventilation Necessary
Operation Safety
Mind Static Electricity Must wear protective clothing and anti-static gloves Don`t use mobile phone
Installation Safety
Caution:
The installation should be in a well-ventilated condition location.
When you installing or maintaining an air conditioner using Refrigerant R32/R290, the location should
be free fire from open or any other goods temperature higher than 370℃ for R290/548℃for R32 which
easily produces open fire include welding, smoking, drying oven.
When installing an air conditioner of R32/R290, it is necessary to take appropriate anti-static measures
such as wear anti-static clothing and gloves.
It is necessary to choose the location for installation or maintenance where in the air inlets and outlets
of the indoor and outdoor units should be not surrounded by obstacles or close to any heat source or
combustible and/or explosive environment.
If the indoor unit suffers refrigerant leak during the installation, it is necessary to immediately turn off the
valve of the outdoor unit and all the personnel should go out till the refrigerant leaks completely for 15
minutes. If the product is damaged, it is a must to carry such damaged product back to the
maintenance station and it is prohibited to weld the refrigerant pipe or conduct other operations on the
Refrigerant Leak Detector
Appropriate Installation
Location
The left picture is the schematic diagram of a refrigerant leak
detector.
TCL Air Conditioner Service Manual
20
user’s site.
It is necessary to choose the place where the inlet and outlet air of the indoor unit is even.
It is necessary to avoid the places where there are other electrical products, power switch plugs and
sockets, kitchen cabinet, bed, sofa and other valuables right under the lines on two sides of the indoor
unit.
Special tools:
Tool Name Requirement(s) for Use
Mini Vacuum
Pump
It should be an explosion-proof vacuum pump; can ensure certain precision
and its vacuum degree should be lower than 10Pa.
Filling Device
It should be a special explosion-proof filling device; have certain precision and
its filling deviation should be less than 5g.
Leak Detector It should be calibrated regularly; and its annual leak rate should not exceed
10g.
Concentration
Detector
A) The maintenance site should be equipped with a fixed-type combustible
refrigerant concentration detector and connected to a safeguard alarm
system; its error must be not more than 5%.
B) The installation site should be equipped with a portable combustible
refrigerant concentration detector which can realize two-level audible and
visual alarm; its error must be not more than 10%.
C) The concentration detectors should be calibrated regularly.
D) It is necessary to check and confirm the functions before using the
concentration detectors.
Pressure Gauge
A) The pressure gauges should be calibrated regularly.
B) The pressure gauge used for Refrigerant 22 can be used for Refrigerants
R290 and R161; the pressure gauge used for R410A can be used for
Refrigerant 32.
Fire Extinguisher
It is necessary to carry fire extinguisher(s) when installing and maintaining an
air conditioner. On the maintenance site, there should be two or more kinds of
dry powder, carbon dioxide and foam fire extinguishers and that such fire
extinguishers should be placed at stipulated positions, with eye-catching
labels and in handy places.
Maintenance
1). Inspections before maintenance.
(1) Inspection of maintenance environment
There should be no leaked refrigerant in the room before operation.
It is only allowed to operate in a room which meets the area requirement on the nameplate.
It is necessary to make the room keep a continuous ventilation state at the time of maintenance.
The room in the maintenance should be free from fire or welding, smoking, drying oven or any other
goods temperature higher than 370℃ (R290)/548℃ (R32) which easily produces fire.
During the maintenance, it is necessary to ensure that any person’s any mobile phone or any
electronic product with radiation in the room is powered off.
The maintenance area should be equipped with a drying powder or carbon dioxide fire extinguisher
and that such fire extinguisher can work.
(2) Inspection of maintenance equipment
This manual suits for next models
2
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