TCL TFF-60HRA, TOF-60HSA Service Manual
TCL
FLOOR-STANDING SPLIT-TYPE AIR CONDITIONERS
SERVICE MANUAL
No.20170622
Models
TFF-60HRA/TOF-60HSA
CONTENTS
1. IMPORTANT NOTICE
2. PRODUCT DIMENSIONS
3. REFRIGERATION CYCLE DIAGRAM
4. OPERATION DETAILS
5. WIRING DIAGRAM
6. EXPLOSION VIEW AND PART LISTS
TCL Air Conditioner Service ManualTCL Air Conditioner Service ManualTCL Air Conditioner Service Manual
Air Conditioner Service Manual
2
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.
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
2. PRODUCT DIMENSIONS
Indoor Unit:
Outdoor Unit:
Model A B C D E F G H I J K
60K 650 405 1920 940 1250 340 600 400 375 50 63
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Air Conditioner Service Manual
3. Refrigeration cycle diagram
Cooling only
Heat exchange
(Evaporator)
Heat pump
Heat exchange
(Evaporator)
Liquid side
2-way valve
Gas side
3-way valve
Accumulator
Liquid side
2-way valve
Gas side
3-way valve
Accumulator
Capillary
Compressor
Check valve
Capillary Assembly
4-way valve
Compressor
Heat exchange
(condenser)
Heat exchange
(condenser)
Heating
Cooling
3
4.Operation Details
Remote controller
1
2
3
ECO
4
5
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Air Conditioner Service Manual
ON/OFF button
1
To switch the conditioner on and off.
2
ECO button
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.
MODE button
3
To select the mode of operation.
FAN SPEED button
4
To select the fan speed of auto/low/mid/high.
SWING button
13
12
11
10
9
8
7
5
To activate or deactivate of the movement of the
DEFLECTORS .
6
HEALTH button
To switch - on /off HEALTHY funtion.
which controls the ionizer or plasma generator only
for inverter type.
TURBO button
7
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 .
8
SWING button
To activate or deactivate of the movement of the
DEFLECTORS .
DISPLAY button
9
To LED display (if present)switch on/off the
It is a button
SLEEP button
10
10
9
To activate the function SLEEP .
TIMER button
11
9
To set automatic switching-on/off.
12
TEMP UP button
Increase the temperature or time by 1 unit.
TEMP DOWN button
13
9
Decrease the temperature or time by 1 unit.
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Note: Each mode and relevant function will be further specified in following pages.
Remote Control
The remote controller is not presetting as Cooling Only Air Conditioner or Heat Pump by manufacturer.
Each time after the remote controller replace batteries or is energized, the arrowhead will flashes on the
front of Heat or Cool on LCD of the remote controller.
User can preset the remote controller type depending on the air conditioner type you have purchased as
follows:
Press any button when the arrowhead flashes on the front of Cool , Cooling Only is set.
Press any button when the arrowhead flashes on the front of Heat , Heat Pump is set.
If you don t press any button within 10 seconds, the remote controller is preset as Heat Pump
automatically.
Note :
If the air conditioner you purchased is a Cooling Only one, but you preset the remote controller as Heat
Pump, it doesn t bring any matter. But if the air conditioner you purchased is a Heat Pump one, and you
preset the remote controller as Cooling Only, then you CAN NOT preset the Heating operation with the
remote controller.
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Air Conditioner Service Manual
Electronic Controller
1. Safety Control
(1) Time Delay Safety Control
z 3 minutes delay for compressor---The compressor is ceased for 3minutes to balance the pressure in the
refrigeration cycle in order to protect the compressor.
z 2 minutes delay for 4-way valve---The 4-way valve is ceased for 2 minutes to prevent the
refrigerant-gas abnormal noise when the HEATING operation is OFF or switch to the other operation
mode.
(2) Indoor Pipe Temperature Sensor Frost Prevention Control
When the indoor pipe temperature sensor reads 0℃ or below for 5 minutes, the indoor pipe temperature
sensor frost prevention control starts. The compressor and outdoor fan stop and indoor fan operates at high
speed for 3 minutes. After that, if the indoor pipe temperature sensor reads less than 5℃ this control
prolonged until the indoor pipe temperature sensor reads 5℃ or more.
(3) High Temperature Protection Control
During HEATING operation, the outdoor fan motor and compressor are controlled by the indoor pipe
temperature to prevent the high temperature of compressor.
Outdoor fan OFF: when the indoor pipe temperature is ≥53℃
Outdoor fan ON: when the indoor pipe temperature is ≤48℃
Compressor OFF: when the indoor pipe temperature is ≥62℃
Compressor ON: when the indoor pipe temperature is ≤48℃
2. “Feel” Mode Operation
(1) When the “I Feel” mode is selected, the operation mode and initial set temperature 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 “I Feel” mode from other mode, the “I Feel” mode doesn’t operate until compressor
stop for more than 3 minutes.
COOLING
DRY
HEATING for Heat Pump Type
FAN for Cooling Only Type
z In the “I Feel” mode , when the controller receives the up or down single of temperature, the set
3. “COOLING” Mode Operation
(1) When the COOLING mode is selected without setting temperature, the system will set the set temperature at
℃ automatically with the AUTO FAN speed.
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(2) When selecting the COOLING mode operation, the system will operate according to the setting by the
remote controller and the operation is as following:
Mode
temperature can adjust by 1
Initial room temperature
26℃ or more
20℃ to 25 ℃
Less than 20℃
Initial set temperature
24℃
18℃
23℃
℃ upper or lower. The biggest you can adjust by 2℃ upper or lower.
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Air Conditioner Service Manual
Room Temp.
Set TEMP. ＋1℃
Set TEMP. －1℃
Time
More than 2 min
More than 2 min
More than 2 min
More than 2 min
More than 2 min
Indoor Fan
Set Speed
Set Speed
Set Speed
Set Speed
Set Speed
Compressor
ON
OFF
ON
OFF
ON
Outdoor Fan
ON
OFF
ON
OFF
ON
Set Temp. ＋1℃
Set Temp. －1℃
Room Temp.
Time
More than 2 min
More than 2 min
More than 2 min
More than 2 min
More than 2 min
Compressor
ON
OFF
ON
OFF
ON
Outdoor fan
ON
OFF
ON
OFF
ON
Temperature raise
Temperature drop
4. “DRY” Mode Operation
(1) The system for DRY operation used the same refrigerant circle as the cooling circle.
(2) When the system operates in DRY mode ,at first it operates in cooling mode at 16℃ or 18℃ for 3 minutes.
And then, the system operates in cooling mode with low speed that regards the temperature of the room
temperature sensor reads decrease 2℃ as the set temperature. During the course of this, the fan speed
set operation is failing but the vane motor can be controlled.
5. “HEATING” Mode Operation (Only available for Heat Pump)
(1) When the HEATING mode is selected without setting temperature, the system will set the temperature at
23℃ automatically with the AUTO FAN speed.
(2) When selecting the HEATING mode operation, the system will operate according to the setting by the
remote controller and the operation is as following:
(3) In HEATING mode, the indoor fan motor speed is controlled by Cold Air Prevention Control.
(4) Cold Air Prevention Control
The function is intend to prevent cold air from being discharged when the heating operation starts or
when defrosting.
The indoor fan speed will be controlled as following.
The vane angle is at the angle C(100°).
Set Speed Set Speed
34℃
Low Speed
27℃
Low Speed
25℃
Stop the fan
23℃
Stop the fan
During the heating operation, if the compressor stops that it will adjust the indoor fan speed, after 30
seconds to stop the fan.
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Air Conditioner Service Manual
(5) Defrost
Defrosting of the outdoor heat exchange is controlled by the microprocessor with detection by the indoor
pipe temperature sensor.
Defrost control type is according to the JC on the PCB whether is connected.
z When the JC is connect on the PCB
When one of the conditions of A, Band C is satisfy, the defrosting operation stars.
A. IPT--- indoor pipe temperature
In the condition A, it must satisfy the conditions a), b)and c) then into defrosting operation.
a) IPT1 satisfy IPT1=IPT
b) t5≥50minutes(the compressor cumulative operation time≥50 minutes, t5 is permitted move
and lower than t1 too).
IPT＜40℃，and keep 2 minutes.
c)
According to the condition A enter the defrosting operation, the first defrosting operation time is
8minutes; After defrosting operation one cycle, and then judge and regulate the defrosting operation
time.
B. After the compressor cumulative operation time exceeds 120 minutes and the temperature of the IPT
is less then 35
℃ for 2 minutes. When the defrosting operation time on this condition exceeds
－△IPT（8℃）
MAX
8minutes, it will terminate.
C. After the compressor operation continuously for 20 minutes and the IPT is less than 23℃ or from
the last time of defrosting operation is 50 minutes or more interval. When the defrosting operation
time on this condition exceeds 10 minutes, it will terminal.
z When the JC isn’t connected on the PCB
When the conditions of a) or b) is satisfy, the defrosting operation starts.
a) Have the outdoor sensor on the outdoor unit: Under the heating operation, the compressor cumulative
operation time exceeds 50 minutes and the temperature of the outdoor pipe temperature sensor reads
lower than －4
b) No the outdoor on the outdoor unit: Under the heating operation, the compressor cumulative
operation time exceeds 50 minutes, if the indoor pipe temperature sensor reads lower than 40
℃.
℃
continuously for 2minutes.
z Defrost terminating conditions
When the condition c) or d) is satisfy, the defrosting operation will terminal.
c) The outdoor defrost sensor reads 15
℃ or more.
d) The defrosting time exceeds 10 minutes.
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Air Conditioner Service Manual
Defrosting time chart
Outdoor Fan ON OFF ON
Revering Valve ON OFF ON
Compressor Relay ON OFF ON OFF ON
39S 5S Defrost Count MAX 12min 19S 15S t
6. “FAN” mode operation
The indoor fan motor always turns on at the set speed and the vane motor turns on at the set fettle.
7. 4-way Valve control
HEATING ON
COOLING/DRY OFF
The 4-way valve reverses for 5 seconds right before start-up of the compressor as following chart:
COOLING/DRY TO HEATING HEATING TO COOLING/DRY
Compressor
4-way Valve
5s 2min
Outdoor Fan
8. Assistant Heater
1) The heater mode is automatically controlled.
2) The condition of the heater ON. (must accord with the following conditions)
a. The compressor has operated over 10 minutes.
b. The indoor fan motor has operated at normal over 15 minutes.
c. Not at the defrosting.
d. The heater latest off was over 30 seconds.
e. ST-RT≥3℃。
f. RT＜22℃.
g. IPT≤43℃
3) The condition of the heater OFF. (accord with one of the following condition)
a. The compressor off.
b. RT≥24℃.
c. IPT≥48℃
d. Indoor motor off.
e. Enter the sleep mode.
9. “SLEEP” mode
When the SLEEP button is pressed, the SLEEP mode is selected as following:
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