TCL TCE-25CHSD User manual

Air Conditioner Service Manual
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Inverter air conditioner
Service Manual
Models
TCE-25CHSD TCE-35CHSD
TCE-51CHSD TCE-70CHSD
CONTENTS
1. Important Notice
2. Product Dimensions
3. Refrigeration cycle diagram
4. Operation details
5. Wiring diagram
6. Explosion view and parts
7. Precaution
8. Names of parts
9. Installation
10. Introduction R32/R290 air conditioner installation
11. Trouble shooting

Air Conditioner Service Manual
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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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How to order spare parts
To have your order filled promptly and correctly, please furnish the
following
information:
1. Model No. with Indoor or Outdoor
2. No. in the Explosion View
3. Part Name
4. The quantity you ordered

Air Conditioner Service Manual
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2. Product Dimensions
Indoor Unit:
Outdoor Unit:
Model
Indoor unit
Outdoor unit
A
B
C
D
E
F
G
H
I
J
K
TCE-25CHSD
777
250
205
700
550
256
439
302
277.8
48
55
TCE-35CHSD
777
250
205
700
550
256
439
302
277.8
48
55
TCE-51CHSD
910
292
205
780
602
290
516
349
314
54
63
TCE-70CHSD
1010
315
220
845
693
336
586
374.9
347.5
58.6
63

Air Conditioner Service Manual
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3. Refrigeration cycle diagram
Cooling only
Heat pump
Capillary
Compressor
Accumulator
Heat exchange
(condenser)
Heat exchange
(Evaporator)
2-way valve
Liquid side
3-way valve
Gas side
Cooling
Heating
Gas side
3-way valve
Liquid side
2-way valve
Heat exchange
(Evaporator)
Heat exchange
(condenser)
Accumulator
Compressor
4-way valve
Capillary Assembly
Check valve

4
Remote controller 1
2
4
3
5
6
9
7
MODE button
ECO button
FAN SPEED button
TEMP UP button
TIMER button
SLEEP button
TEMP DOWN button
To select the mode of operation.
In cooling mode,press this button ,the temperature
will increase 2 on the base of setting temperature:
In heating mode, press this button, the temperature
will decrease 2 on the base of setting temperature.
To switch the conditioner on and off.
To select the fan speed of auto/low/mid/high.
To set automatic switching-on/off.
Increase the temperature or time by 1 unit.
To activate the function SLEEP .
Decrease the temperature or time by 1 unit.
Air Conditioner Service Manual
Operation Details
Remote Control
The remote controlleris not presetting as CoolingOnly AirConditioner or HeatPump by manufacturer.
Each time after the remotecontroller replace batteriesor is energized,the arrowhead willflashes on thefront of
Heat or Cool on LCD of the remote controller.
User can presetthe remote controllertype depending onthe air conditionertype you havepurchased as follows:
Press any buttonwhen the arrowheadflashes on thefront of Cool , Cooling Onlyis set.
Press any buttonwhen the arrowheadflashes on thefront of Heat , Heat Pumpis set.
If you don t press any button within 10 seconds, theremote controller ispreset as HeatPump automatically.
LOCK/UNLOCK
When you pressthe buttons "MODE"and "TIMER" atthe same time,the remote controllerwill be locked,all buttons
of the remotecontroller will bedeactive and itdisplays "Lo" .You can operateagain as thesame way tounlock the
remote controller.
8
DISPLAY button
In cooling mode, press this button, the unit will give
the maximum cooling temperature with 16
In heating mode, press this button, the unit will give
the maximum heating temperature with 31 .
9
SWING button
10
To activate or deactivate of the movement left or right
of the DEFLECTORS .
15
HEALTH button
9
3
4
2
1
8
5
6.7
15
10.11
9
12
13
9
ON/OFF button
11
To LED display (if present)switch on/off the
14 TURBO button
16
17
13
16
I FEEL button
To switch - activr/deactive I FEEL function. The air
conditioner will regulate the room temperature base on the
temperature(0 ~50 ) around the remote controller.This
function will terminate 2 hours later once it's active.
To switch - on /off HEALTHY funtion. It is a button
which controls the ionizer or plasma generator only
for inverter type.
MUTE button
To activate the function of Mute.
I SET
Press this button, remote will remember location set, then
the next use , press the button will enter the remember set.
Press long time exit I SET.
CLEAN button
To activate the function CLEAN .
12 SWING button
To activate or deactivate of the movement up or down
of the DEFLECTORS .
14
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Electronic Controller
1. Safety Protection
(1) Time Delay for Safety protection
z3 minutes delay for compressor ---The compressor is ceased for 3minutes before restarting to
balance the pressure in the refrigeration cycle in order to protect the compressor.
z2 minutes delay for 4-way valve---The 4-way valve will be ceased for 2 minutes late after
compressor to prevent the refrigerant-gas abnormal noise when the HEATING operation is
OFF or switch to the other operation mode.
(2) Discharge temperature protection
There is a temperature sensor on top of compressor, when temperature on top of
compressor
exceeded the limit, system control will shut down the compressor and the display board will
show the error code.
(3) Lower voltage protection
When AC voltage ≤158V and keep it for 10 seconds, unit will be shut down for protection.
(4) Over voltage protection
When AC voltage ≥260V, unit will be shut down and recover while AC≤255V.
(5) Over current protection
When the current of outdoor unit is overload, controller shut down the unit immediately and show
error code.
(6) Compressor abnormity protection
When compressor start on or in the process of running, if there is no feedback to controller or
load of compressor is abnormity, the air conditioner will shut down, and show error code.
(7) IPM module protection
IPM module has high temperature & over current protection itself, if there is signal feedback to
IPM, the outdoor unit will shut down, LED on outdoor PCB will show the error code.
2. “Feel” Mode Operation
(1) When the “Feel” mode is selected, the operation mode and initial temperature set are
determined by the initial room temperature at start-up of the operation except to turn off the air
conditioner and operates it again.
(2) If the mode is change to “Feel” from other mode, the “Feel” mode doesn’t operate until
compressor stop for more than 3 minutes.
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Mode Initial Room Temperature Initial Set Temperature
COOLING RT=26℃23℃
DRY 26℃>RT≥20℃RT-2℃
HEATING for Heat Pump/
FAN for Cooling Only RT<20℃-
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zIn the “Feel” mode, when the controller receives the up or down signal of temperature, the set
temperature can adjust by 1℃upper or lower. The biggest you can adjust by 2℃upper or lower.
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3. “COOLING” Mode Operation
(1) Compressor frequency control
According to difference room temperature and set temperature (δt = RT-ST), running frequency of
compressor is controlled by electronic controller. When room temperature is much higher than set
temperature, the compressor will start at a high frequency, and as room temperature goes down, the
compressor running frequency will go down. When room temperature is lower than set temperature,

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thecompressor will run at very low frequency. In general, unit will change its running frequency
according toδt to make room temperature closing to set temperature.
(2) Outdoor temperature affects running frequency of the compressor
Outdoor temperature affect compressor’s running frequency. Difference inlet temperature of
outdoor unit is adapted by difference compressor running frequency. While outdoor temperature is
about 30℃, the compressor will run in high frequency.
If unit run in “cooling” mode and outdoor temperature is less than -2℃,the controller will shut down
compressor and show error code, while the ambient temperature is over 1℃, the compressor will run
automatically.
(3) Auto fan control in cooling mode
In cooling mode (include cooling in “feel” mode), fan speed is determined by
δ t, as the following
diagram:
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4.“DRY” Mode Operation
(1) The system for DRY operation used the same refrigerant circle as the cooling one.
(2) When the system operates in DRY mode, at first it operates in cooling mode, the set
temperature (ST) is “RT-2℃”. After that, t he system will operate in cooling mode with lowest
fan speed for 30 minutes and then change to middle speed for 30seconds as a cycle. During
the course of this operation, you can’t use remote controller to adjust the fan speed but you can
control the vane direction.
(3) In the dry mode, when RT≤12℃, the compressor will stop and operates again at RT≥14℃.
5. “HEATING” Mode Operation (available for Heat Pump only)
(1) Frequency control
Same as the frequency control in cooing mode, the running frequency of compressor is
controlled by controller. Unit change its running frequency according to
δ t to make the room
temperature closing to the set temperature.
(2) Indoor fan motor control
1) Cold Air Prevention Control
zThe function is intended to prevent cold air from being discharged when heating mode
selected or while in defrosting.
zThe indoor fan speed will be controlled as following.
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zIn heating operation, if air conditioner turn off, the indoor fan motor will run most for 30
RT‐ST
℃
3.5
3.0
1.5
1.0
δt come down
δt come up
High fan
Min fan
Low fan
Breeze
Temperature up
Temperature down
Setting
Low fan
Stop
37℃
33℃
25℃
34℃
28℃
22℃

Air Conditioner Service Manual
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seconds since the stop of compressor.
2) Auto fan control (heating)
In heating mode (include in “I feel” mode) , fan speed is determined by δtas the following:
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(3) 4-way valve control
In heating mode, 4-way valve will power on ahead of compressor for 5 seconds, and cut off
for 2 minutes later than compressor. 4-way valve will not power off unless the machine to be
switched off, mode changed or on the process of defrosting.
(4) Defrosting
Defrosting is controlled by the microprocessor.
When one of the following conditions is satisfied, unit comes into defrosting:
a. Outdoor heat exchanger Temperature (OPT) is continuously less than 3℃while the unit runs
for more than 40 minutes, and OPT is keeping under -6℃for more than 3 minutes.
b. Outdoor heat exchanger Temperature (OPT) is continuously less than 3℃meanwhile the
unit runs for more than 80 minutes, and OPT is keeping under -4℃for more than 3
minutes.
c. Outdoor heat exchanger Temperature (OPT) is continuously less than 3℃while the unit runs
for more than 120 minutes, and OPT is keeping below -2℃for more than 3 minutes.
Before the air con comes into defrosting, compressor running frequency drop down to a
lower frequency firstly, then the compressor shuts down.
In defrosting, the max. frequency of compressor is F9 (a little less than the highest
frequency ). In this period all protection function are available.
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In defrosting, LED showing by winking.
No matter what AC come into or out of defrosting, indoor fan motor speed is the same as Cold
Air Prevention Control.
While one of the following conditions is satisfied, unit comes out of defrosting and shifts to
heating mode:
a. Outdoor coil Temperature (OPT) ≥15℃.
b. The time of defrosting keeps for more than 10 minutes.
(5) Indoor exchanger overheat protection
When Indoor exchanger Temperature (IPT) is higher than 55℃, unit comes into indoor exchanger
RT‐ST
δt come down
δt come up
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3.5
3.0
1.5
1.0
High fan
Min fan
Low fan
3.5
1.5
Compressor ON
OFF
ON
OFF
ON
OFF
NORMAL 800
4-way valve
Expansion valve
Outdoor fan motor
50S Defrosting time ≤10Mins 15S 15S
10S

Air Conditioner Service Manual
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overheat protection. The compressor drops its frequency toward to F1 level until IPT≤52℃
If IPT≤52℃and keep for 5 minutes, control system doesn’t limit running frequency.
If IPT>62℃, control system shut down compressor, and recover while IPT drop less than 50℃.
6. “SLEEP” mode
When the SLEEP button is pressed, the AC operates as following:
zThe indoor fan speed is set at low speed, the power lamp and the sleep lamp is on, the
display of temperature will close after 5 minutes.
zWhen selecting COOLING/DRY operation with SLEEP mode, the set temperature will be
raised by 1℃1 hour later and by 2℃2 hour later.
zWhen selecting HEATING operation with SLEEP mode, the set temperature will be dropped by
1℃1 hour later and 2℃2 hours later.
zAfter the System operates in SLEEP mode for 8 hours, it will stop automatically.
7. EMERGENCY Operation
When the EMERGENCY Operation switch is pressed one time, COOLING mode is selected
and if the EMERGENCY Operation switch press again within 3s, HEATING mode selected, while
press once again, the unit will switch off.
When the remote controller missing, failed or the batteries run down, press the EMERGENCY
Operation switch on front of the indoor unit for function test.
NOTE: Do not press the EMERGEMCY Operation switch during normal operation.
8. AUTO-RESTART Function (Option)
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.
Auto-restart Pre-setting (optional):
If Auto-restart function is needed, follow the steps below to activate this function:
1) Pulling the air-con's plug out of socket.
2) Pressing and holding the Emergency button (ON/OFF) on the indoor, then insert the plug
into the socket again.
3) Keep pressing the Emergency button for more than 10 seconds until three short beeps
heard, the Auto-restart function been activated.
9. Protection and Failure Display
zWhen protection display is available, controller will show error code, digital LED shows
error code and setting temperature by turns.
zIf there is more than one failure, it will show error codes according to the error list sequence.
zTo insure the signal communication of indoor and outdoor unit, any failure code relates to
outdoor unit will remain display for 2 minutes maximum after it’s recovered.
zAmong all the failure codes, sensor failure can be recovery automatically once it comes normal.

Air Conditioner Service Manual
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zError list
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Failure Type LED Code DigitalLEDCode
Indoor and outdoor communication failure RUN、TIMER –both winking E0
Outdoor communication failure RUN、TIMER –both winking EC
Indoor room temperature sensor (IRT) RUN-1 time/8s E1
Indoor coil temperature sensor (IPT) RUN-2 times /8s E2
Outdoor coil temperature sensor (OPT) RUN-3 times /8s E3
System abnormity RUN-4 times /8s E4
Model configuration wrong RUN-5 times /8s E5
Indoor fan motor fault RUN-6 times /8s E6
Outdoor temperature sensor RUN-7 times /8s E7
Exhaust temp. sensor RUN-8 times /8s E8
IPM drive and module fault RUN-9 times /8s E9
Outdoor fan motor fault (DC motor) RUN-10 times /8s EF
Current sensor fault RUN－11 times /8s EA
Indoor unit EEPROM fault RUN-12 times /8s EE
Temp. switch fault ( on top of the
compressor)
RUN-13 times /8s EP
Voltage sensor fault RUN-14 times /8s EU
zProtection display code list:
zOutdoor failure display
There is a LED on outdoor power board, it blinks 1s ON and 1s OFF while compressor standby and it
always light (ON) while compressor running; If there is failure happened on ODU,The indicator (LED)
alerts the fault in a cycle as such that it is bright for 0.5 seconds, dark for 0.5 seconds, blinks “n” times
and then dark for 3 seconds. For details as table below:
Protection Type Function Indicator (flash) DigitalLEDCode
Overvoltage /lower voltage protection RUN: Blink; TIMER: 1 blink /8 sec P1
Overcurrent protection RUN: Blink; TIMER: 2 blink /8 sec P2
Exhaust over temperature protection RUN: Blink; TIMER: 4 blink /8 sec P4
Too cool protection in cooling mode RUN: Bright; TIMER: 5 blink /8 sec P5
Overheat protection in cooling mode RUN: Bright; TIMER: 6 blink /8 sec P6
Overheat protection in heating mode RUN: Bright; TIMER: 7 blink /8 sec P7
Outdoor over temperature
/ lower temperature protection RUN: Bright; TIMER: 8 blink /8 sec P8
Drive protection (software control ) RUN: Blink; TIMER: 9 blink /8 sec P9
Module protection (hardware control) RUN: Blink; TIMER: 10 blink /8 sec P0

Air Conditioner Service Manual
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blink time (n)
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Failure
1 IPM protection
2 Over voltage /lower voltage
3 Overcurrent
4 Exhaust over temperature protection
5 Outdoor coil over temperature protection
6 Drive fault and protection (V1，VP1)
7 Communication fault with indoor unit
8 Compressor overheat fault (compressor top switch)
9 Short-circuit / open-circuit fault of outdoor temperature sensor
10 Short circuit / open-circuit fault of outdoor heat exchanger temperature
sensor
11 Short-circuit / open-circuit fault of exhaust temperature sensor
12 Voltage sensor fault
13 Current sensor fault
14 IPM fault
15 Communication fault between power source board and IPM
16 No feedback from DC fan motor(outdoor unit)
17 Defrost state
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Display on outdoor power source board:
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Air Conditioner Service Manual
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5. Wiring diagram
MODEL: TCE-25CHSD, TCE-35CHSD
INDOOR UNIT:
OUTDOOR UNIT

Air Conditioner Service Manual
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INDOOR UNIT:
OUTDOOR UNIT
Mode: TCE-51CHSD

Air Conditioner Service Manual
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MODEL: TCE-70CHSD
INDOOR UNIT
OUTDOOR UNIT

Air Conditioner Service Manual
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6. Explosion view and parts
Mode: TCE-25CHSD, TCE-35CHSD
INDOOR UNIT:
22 23
25
19
18
17
16
15
14
13
12
11
10
9
7
6
5
4
3
2
1
24
20
26
21
8

Air Conditioner Service Manual
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PARTS LIST
Indoor Unit-TCE-25CHSD
No.
Part No.
Part Name
Q’ty
Remark
1
210838031
Installation Plate
1
2
210755108C
Base
1
3
210701880
Vertical Vane Assembly
2
4
210737655
Cross Fan
1
5
1070100010
Bearing Mount
1
6
211237323B
Evaporator
1
7
210755110
Face Frame
1
8
210701846
Screw Cover
1
9
210737659
Vane
1
10
210701863
Air Filter
2
11
210705767
Display PCB Box
1
12
210901127S
Display PCB
1
13
210746792B
Front Panel
1
14
1170120044B
Power Supply Cord
1
15
210737654
Electrical Box Cover
1
16
210900478A
Terminal
1
17
210736832
Cable Clamp
1
18
210901224
Transformer
1
19
210901714CE
Main PCB
1
20
210736831
Electrical Box
1
21
210900333
Indoor Sensor Assembly
1
22
1170030067G
Indoor Motor
1
23
210737653
Indoor Motor Cover
1
24
210737091
Drainage Hose
1
25
1170020011
Vane Motor
1
26
210736813
In And Out Pipe Fixer
1
27
210901799A
Remote Controller
1
Not shown in Explosion view
28
210708230
Remote Controller Supporter
1
29
211367422AFT
Indoor Carton
1
30
211367583
Left Foaming
1
31
211367584
Right Foaming
1

Air Conditioner Service Manual
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Indoor Unit-TCE-35CHSD
No.
Part No.
Part Name
Q’ty
Remark
1
210838031
Installation Plate
1
2
210755108C
Base
1
3
210701880
Vertical Vane Assembly
2
4
210737655
Cross Fan
1
5
1070100010
Bearing Mount
1
6
211237323B
Evaporator
1
7
210755110
Face Frame
1
8
210701846
Screw Cover
1
9
210737659
Vane
1
10
210701863
Air Filter
2
11
210705767
Display PCB Box
1
12
210901127S
Display PCB
1
13
210746792B
Front Panel
1
14
1170120044B
Power Supply Cord
1
15
210737654
Electrical Box Cover
1
16
210900478A
Terminal
1
17
210736832
Cable Clamp
1
18
210901224
Transformer
1
19
210901714CE
Main PCB
1
20
210736831
Electrical Box
1
21
210900333
Indoor Sensor Assembly
1
22
1170030067G
Indoor Motor
1
23
210737653
Indoor Motor Cover
1
24
210737091
Drainage Hose
1
25
1170020011
Vane Motor
1
26
210736813
In And Out Pipe Fixer
1
27
210901799A
Remote Controller
1
Not shown in Explosion view
28
210708230
Remote Controller Supporter
1
29
211367422AFW
Indoor Carton
1
30
211367583
Left Foaming
1
31
211367584
Right Foaming
1

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Mode: TCE-51CHSD
INDOOR UNIT:
18
17
16
14
13
12
11
10
9
8
7
6
5
4
3
2
1
19
20
23 24
25 26 27
21
22
15

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Indoor Unit- TCE-51CHSD
No.
Part No.
Part Name
Q’ty
Remark
1
210838037
Installation Plate
1
2
210755494
Base
1
3
210738575
Vertical Vane Assembly
2
4
210738580
Vertical Vane Connector
1
5
210738661
Vane
1
6
1070020042AA
Cross Fan
1
7
1070100010
Bearing Mount
1
8
211238370
Evaporator
1
9
210738663
Face Frame
1
10
210701846
Screw Cover
2
11
210738606
Air Filter
2
12
210705767
Display PCB Box
1
13
210901127S
Display PCB
1
14
210746767B
Front Panel
1
15
1170120045AD
Power Supply Cord
1
16
210738393
Electrical Box Cover
1
17
210900478A
Terminal
1
18
210736832
Cable Clamp
1
19
210901742AE
Main PCB
1
20
210900333
Electrical Box
1
21
210736831
Indoor Sensor Assembly
1
22
210900495E
Indoor Motor
1
23
210738581
Indoor Motor Cover
1
24
210737091
Drainage Hose
1
25
1170020031AC
Vane Motor
1
26
210736813
In And Out Pipe Fixer
1
27
210901799A
Remote Controller
1
Not shown in Explosion view
28
210708230
Remote Controller Supporter
1
29
211370750DX
Indoor Carton
1
30
211370968
Left Foaming
1
31
211370969
Right Foaming
1

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Mode: TCE-70CHSD
INDOOR UNIT:
19
20
18
17
16
14
13
12
11
10
9
8
7
6
5
4
3
2
1
21
22
23
24 25
26
15