TCL TAC-42CF Service Manual Download Page 6

TCL Air Conditioner Service Manual 

                                                                                             

5

Elctronic Controller 

1. Safety 

Control 

(1)  Time Delay Safety Control 

 

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. 

 

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. 

 

20 seconds delay for indoor fan--- When the assistant thermistor turns off, the indoor fan operates in 
low speed for 20 seconds to release the heat of indoor unit. 

(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: 5

6

 

Outdoor fan ON:

50

 

Compressor OFF:6

0

 

Compressor ON:

50

 

2. “

AUTO

” Mode Operation 

(1) When the “

AUTO

” 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 “

AUTO

” mode from other mode, the “

AUTO

” mode doesn’t operate until compressor 

stop for more than 3 minutes. 

 
 

 
 
 
 
 
 
 

 

 In the “

AUTO

” mode , when the controller receives the up or down single of temperature, the set 

temperature can adjust by 1

  upper or lower. The biggest you can adjust by 2

  upper or lower. 

3.  “COOLING” Mode Operation 

(1)  When the COOLING mode is selected without setting temperature, the system will set the set temperature at 

26

  automatically with the AUTO FAN speed. 

(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 

Initial room temperature 

COOLING  

DRY 

HEATING for Heat Pump Type   
FAN for Cooling Only Type 

26

 or more 

20

 to 25 

 

Less than 20

 

Initial set temperature 

24

 

18

 

23

 

Summary of Contents for TAC-42CF

Page 1: ...ING AIR CONDITIONERS CONTENTS 1 IMPORTANT NOTICE 2 2 TECHNICAL SPECIFICATION 3 3 OPERATION DETAILS 4 4 WIRING DIAGRAM 5 5 EXPLOSION VIEW 12 6 PARTS LIST 18 Models TAC 42CF TAC 42CHF TCL SERVICE MANUAL No TE040720 ...

Page 2: ...nformation 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 wi...

Page 3: ...e φ9 53 Expansion device Capillary tube Defrosting system Microcomputer controlled reverse system Fan System Indoor air circulation m3 h 1000 1000 Indoor fan type Cross flow Cross flow Cooling rpm 550 480 380 550 480 380 Heating rpm N A 550 480 380 Dry rpm 380 380 Indoor fan speed H M L Sleep rpm 380 380 Indoor fan motor output W 160 160 Outdoor air circulation m 3 h Outdoor fan type Propeller fan...

Page 4: ...TION MODE Selection Button Used to select the type of operation mode AUTO Cooling Dry Fan Only for Cooling Only and Heating Only for Heat Pump FAN SPEED CONTROL Button Used to select the indoor fan motor speed Auto High Mid and Low TCL Air Conditioner Service Manual 4 TCL Air Conditioner Service Manual ...

Page 5: ...temperature and time ON TIMER Button Used to select ON TIMER operation OFF TIMER Button Used to select OFF TIMER operation The indication symbols on LCD A U T O Indicator Sleep Mode Indicator Clock Indicator Cooling Indicator Air Flow Direction Indicator ON TIMER Indicator Dry Indicator Set Room Temp Indicator OFF TIMER Indicator Fan Indicator Fan Speed Indicator Order of ON and OFF Timer Heating ...

Page 6: ... 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 56 Outdoor fan ON 50 Compressor OFF 60 Compressor ON 50 2 AUTO Mode Operation 1 When the AUTO mode is selected the operation mode and initial set temperature are determined by the initial room temperature at start up of t...

Page 7: ... 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 Set Temp 1 Set Temp 1 Room Temp Tim...

Page 8: ...xceeds 10 minutes Defrosting time chart Outdoor Fan ON OFF ON Reversing Valve ON OFF ON Compressor Relay ON OFF ON OFF ON 39S 5S Defrost Count MAX 12min 19S 15S t 6 Assistant Thermistor Function Assistant thermistor is add the thermitor of the electricity to rise the heating capacity automatically not effected by the signal of the remote controller about assistant thermistor ON OFF buttons 1 When ...

Page 9: ...rocessor to feedback the rotational frequency Comparing the current rotational frequency with the target rotational frequency the microprocessor adjusts fan motor electric to make the current rotational frequency close to the target rotational frequency With this control when the fan speed is switched the rotational frequency changes smoothly 2 When the rotational frequency feedback signal has not...

Page 10: ...matic mode only possible when the feel Cool or Heat mode is selected by pressing the Fan button The ventilator always operates in the Auto mode when the Dry mode is selected Select Swing or no Swing by pressing the Swing button Press the Timer button h flashes Use the button to select the time at which the air conditioner must activate between 0 and 10 hours can be set at every half hour between 1...

Page 11: ... during normal operation 14 AUTO RESTART Function Option When the indoor unit is controlled with the remote controller the operation mode set temperature and the fan speed are memorized by the indoor electric control PCB The AUTO RESTART function sets to work the moment power has restored after power failure Then the unit will restart automatically 15 Failure Display and Handling a The failure of ...

Page 12: ...r stops the indoor fan operates in cold air prevention control The system doesn t receive the signal of remoter controller except the signal of shut off it When the system check the voltage is 220V and the delay control is finished it operates at normal again When the indoor fan motor is failure the compressor is stopped the outdoor fan and indoor fan is stopped and display the failure The system ...

Page 13: ...TCL Air Conditioner Service Manual 12 WIRING DISGRAM MODEL TAC 42CHF INDOOR UNIT OUTDOOR UNIT ...

Page 14: ...TCL Air Conditioner Service Manual 13 MODEL TAC 42CF INDOOR UNIT OUTDOOR UINT ...

Page 15: ...or COOLING HEATING 214590114 FRONT PLATE 1084590106 FAN GUARD 1100070001 COMPRESSOR 1120160003 LIQUID STORE CAN 1120120010 TWO WAY VALVE 1124590113 CAPILLARY ASSEMBLY same for heating cooling AND cooling only 1094590101 OUTDOOR PCB for heating cooling 1094590201 OUTDOOR PCB for only cooling 1214590105 PARTITION 1120130012 THREE WAY VALVE 1214590101 BASE 1214590103 RIGHT PLATE 1214590110 TOP COVER ...

Page 16: ...090210 OPERATION PANEL 1094090202 OPERATION PCB for heating cooling 1094090404 OPERATION PCB for only cooling 1074090121 INDOOR GRILLE 1074090122 AIR FILLTER 1074090121 GRILLE 1214090116 MIDLLE PANEL 1170010004 SWING MOTOR 1074090108 HORIZONTAL VANE 1074090110 VERTICAL VANE 1074090103 BASE ...

Page 17: ...TCL AIR CON SERVICE MANUL 1214090121 EVAPORATOR ASSEMBLY 1094090301 MAIN PCB for heating cooling 1094091102 MAIN PCB for only cooling 1170030010 INDOOR MOTOR 1070010004 INDOOR FAN ...

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