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Daikin FTXD35DV2Z [162/226] Removal of pcb
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Si04-803 Indoor Unit
Removal Procedure 151
1.6 Removal of PCB
Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Step Procedure Points
1. Removing the shelter
1
2
3
The figure shows the
appearance of the
electrical box.
Open the shelter (at the
back).
Push the upper center
of the shelter and
unfasten the hooks at
the upper 2 positions of
the shelter.
Preparation
Remove the electrical box
according to the “Removal
of Electrical Box.”
2. Removing the heat
exchanger thermistor
1
Remove the heat
exchanger thermistor
and disconnect the
earth wire.
Содержание
- Inverter pair 1
- Si04 803 1
- Wall mounted type d series e series 1
- Inverter pair d series e series 2
- Table of contents 2
- Control specification 6 3
- Function of thermistor 4 3
- Introduction v 3
- List of functions 3
- Main functions 0 3
- Part 1 list of functions 3
- Part 2 specifications 3
- Part 3 printed circuit board connector wiring diagram 9 3
- Part 4 function and control 9 3
- Printed circuit board connector wiring diagram 0 3
- Specifications 0 3
- Caution for diagnosis 0 2 problem symptoms and measures 1 3 service check function 2 4 troubleshooting 5 4
- Part 5 operation manual 1 4
- Part 6 service diagnosis 9 4
- System configuration 2 2 instruction 3 4
- Check 30 5
- Drawings flow charts v 5
- Index i 5
- Indoor unit 38 5
- Others 96 5
- Outdoor unit 70 5
- Part 7 removal procedure 37 5
- Part 8 others 95 5
- Part 9 appendix 99 5
- Piping diagrams 00 5
- Wiring diagrams 06 5
- Cautions regarding safety of workers 6
- Introduction 6
- Safety cautions 6
- Warning 6
- Caution 7
- Warning 7
- Cautions regarding safety of users 8
- Warning 8
- Caution 9
- Warning 9
- Caution 10
- Icons are used to attract the attention of the reader to specific information the meaning of each icon is described in the table below 10
- Used icons 10
- List of functions 12
- Part 1 list of functions 12
- Holding functions no functions 13
- List of functions 13
- List of functions si04 803 13
- R 410a models 13
- Holding functions no functions 14
- List of functions 3 14
- Si04 803 list of functions 14
- Holding functions no functions 15
- List of functions 15
- List of functions si04 803 15
- Holding functions no functions 16
- List of functions 5 16
- R 22 models 16
- Si04 803 list of functions 16
- Holding functions no functions 17
- List of functions 17
- List of functions si04 803 17
- Holding functions no functions 18
- List of functions 7 18
- Si04 803 list of functions 18
- Part 2 specifications 20
- Specifications 0 20
- Cooling only 21
- Hz 220 230 240v 60hz 220 230v 21
- R 410a models 21
- Specifications 21
- Hz 220 230 240v 60hz 220 230v 22
- Si04 803 specifications 22
- Specifications 11 22
- Hz 220 230 240v 60hz 220 230v 23
- R 22 models 23
- Specifications 23
- Specifications si04 803 23
- Hz 220 230 240v 60hz 220 230v 24
- Si04 803 specifications 24
- Specifications 13 24
- Hz 220v 25
- Specifications 25
- Specifications si04 803 25
- Heat pump 26
- Hz 220 230 240v 60hz 220 230v 26
- R 410a models 26
- Si04 803 specifications 26
- Specifications 15 26
- Hz 220 230 240v 27
- Specifications 27
- Specifications si04 803 27
- Hz 220 230 240v 60hz 220 230v 28
- R 22 models 28
- Si04 803 specifications 28
- Specifications 17 28
- Hz 220v 29
- Specifications 29
- Specifications si04 803 29
- Part 3 printed circuit board connector wiring diagram 30
- Printed circuit board connector wiring diagram 0 30
- Ftk x d 25 35 d 31
- Indoor unit 31
- Printed circuit board connector wiring diagram 31
- Pcb 2 signal receiver pcb pcb 3 display pcb 32
- Pcb 4 intelligent eye sensor pcb 32
- Pcb detail pcb 1 control pcb 32
- Printed circuit board connector wiring diagram 21 32
- Si04 803 printed circuit board connector wiring diagram 32
- Ftks 25 35 d ftk x s 25 35 e 33
- Pcb 2 signal receiver pcb pcb 3 display pcb 34
- Pcb 4 intelligent eye sensor pcb 34
- Pcb detail pcb 1 control pcb 34
- Printed circuit board connector wiring diagram 23 34
- Si04 803 printed circuit board connector wiring diagram 34
- Ftyn 25 35 d 35
- Pcb 2 signal receiver pcb pcb 3 display pcb 36
- Pcb detail pcb 1 control pcb 36
- Printed circuit board connector wiring diagram 25 36
- Si04 803 printed circuit board connector wiring diagram 36
- Outdoor unit 37
- Pcb 2 control pcb outdoor unit 38
- Pcb detail pcb 1 filter pcb 38
- Printed circuit board connector wiring diagram 27 38
- Si04 803 printed circuit board connector wiring diagram 38
- Control specification 6 40
- Function of thermistor 4 40
- Main functions 0 40
- Part 4 function and control 40
- Additional control parameters 41
- Drawing of inverter the following drawing shows a schematic view of the inverter principle 41
- Forced cooling operation 41
- Frequency principle 41
- Frequency restrictions 41
- Initial settings 41
- Inverter principle to regulate the capacity a frequency control is needed the inverter makes it possible to vary the rotation speed of the compressor the following table explains the conversion principle 41
- Main control parameters the compressor is frequency controlled during normal operation the target frequency is set by the following 2 parameters coming from the operating indoor unit 41
- Main functions 41
- Note see the list of functions for the functions applicable to different models 41
- The difference between the room temperature and the set temperature 41
- The load condition of the operating indoor unit 41
- The target frequency is adapted by additional parameters in the following cases 41
- Comfortable air conditioning a detailed adjustment is integrated to ensure a fixed room temperature it is possible to air condition with a small room temperature variation 42
- Energy saving heating and cooling once the set temperature is reached the energy saving operation enables to maintain the room temperature at low power 42
- Even during extreme cold weather the high capacity is achieved it is maintained even when the outdoor air temperature is 2 c 42
- Forced cooling operation for more information refer to forced operation mode on page 42
- Frequency limits the following table shows the functions that define the minimum and maximum frequency 42
- Inverter features the inverter provides the following features 42
- Quick heating and quick cooling the compressor rotational speed is increased when starting the heating or cooling this enables a quick set temperature 42
- The regulating capacity can be changed according to the changes in the outdoor air temperature and cooling heating load 42
- Airflow direction control 43
- Fan speed control for indoor units 44
- In case of inverter units the microcomputer automatically sets the temperature and fan settings the difference between the room temperature at startup and the temperature set by the microcomputer is divided into two zones then the unit operates in the dry mode with an appropriate capacity for each zone to maintain the temperature and humidity at a comfortable level 45
- Programme dry function 45
- Programme dry function removes humidity while preventing the room temperature from lowering since the microcomputer controls both the temperature and airflow volume the temperature adjustment and fan adjustment buttons are inoperable in this mode 45
- Zone a thermostat off 45
- Zone b zone b 45
- Zone c thermostat on 45
- Automatic operation 46
- Cooling dry 47
- Function and control 47
- Heating 47
- Main functions si04 803 47
- The monitoring time has passed while the temperature difference is in the zone b cooling dry 10 minutes heating 10 seconds 47
- The operation turns on in any zones except a 47
- The system resumes from defrost control in any zones except a 47
- The temperature difference is above the zone c after being in the zone a 47
- The temperature difference is in the zone a 47
- Thermostat control 47
- Thermostat control is based on the difference between the room temperature and the setpoint 47
- Thermostat off condition 47
- Thermostat on condition 47
- Night set mode 48
- Details 49
- Econo mode 49
- Econo mode can be activated while the unit is running the remote controller can send the econo command when the unit is in cool heat dry or auto operation 49
- Outline the econo mode reduces the maximum operating current and power consumption by approx 30 during start up etc this mode is particularly convenient for energy saving oriented users it is also a major bonus for those whose breaker capacities do not allow the use of multiple electrical devices and air conditioners it is easily activated from the wireless remote controller by pushing the econo button 49
- This function and powerful operation cannot be used at the same time the latest command has the priority 49
- This function can only be set when the unit is running pressing the operation stop button causes the settings to be canceled 49
- Upper limit of frequency 49
- When the econo command is valid the input current is under reducing control refer to input current control on page 51 also the upper limit of frequency is restricted 49
- When this function is on the maximum capacity is also down approx 20 49
- Mold proof operation 50
- A microcomputer in an indoor unit carries out a sampling every 20 msec and if it detects 10 cycles of the wave in one second in total corresponding to 20msec 10 200msec it judges human is in the room as the motion signal is on 51
- Function and control 51
- In case of fan mode the fan speed reduces by 50 rpm 51
- Intelligent eye 51
- Main functions si04 803 51
- Processing 1 detection method by intelligent eye 51
- The motions for example in cooling 51
- This is the function that detects existence of humans in the room by a human motion sensor intelligent eye and reduces the capacity when there is no human in the room in order to save electricity 51
- This sensor detects human motion by receiving infrared rays and displays the pulse wave output 51
- When a microcomputer doesn t have a signal from the sensor in 20 minutes it judges that nobody is in the room and operates the unit in temperature shifted 2 c from the set temperature cooling dry 2 c higher heating 2 c lower and auto according to the operation mode at that time 51
- Details of the control when powerful button is pushed in each operation mode the fan speed setting temperature will be converted to the following states in a period of 20 minutes 53
- Ex powerful operation in cooling mode 53
- Inverter powerful operation 53
- Outline in order to exploit the cooling and heating capacity to full extent operate the air conditioner by increasing the indoor fan rotating speed and the compressor frequency 53
- Auto restart function 54
- Hot start function 54
- Mold proof air filter 54
- On off button on indoor unit 54
- Other functions 54
- Self diagnosis digital display 54
- Signal receiving sign 54
- Titanium apatite photocatalytic air purifying filter 54
- Function of thermistor 55
- Heat pump model 55
- Cooling only model 56
- Control specification 57
- Control specification si04 803 57
- Detail 1 for heat pump model there are following modes stop cooling includes drying heating include defrosting 57
- For cooling only model there are following models stop and cooling including drying 57
- Function and control 57
- Mode hierarchy 57
- Note unless specified otherwise an indoor dry operation command must be regarded as cooling operation 57
- Outline there are two modes the mode selected in user s place normal air conditioning mode and forced operation mode for installation and providing service 57
- Frequency control 58
- D signal 1 p control calculate 59
- D signal and is used for frequency command 59
- D signal the difference between a room temperature and the temperature set by the remote controller will be taken as the 59
- D value in each sampling time 20 seconds and adjust the frequency according to its difference from the frequency previously calculated 59
- D value is large increase the frequency 59
- D value is small lower the frequency when the 59
- D value obtaining the fixed 59
- D value of the indoor unit and the q value of the indoor unit q value indoor unit output determined from indoor unit volume airflow rate and other factors 59
- D value when the 59
- Determine lower limit frequency 59
- Determine upper limit frequency 59
- For limiting lower limit frequency management is carried out only when the frequency rises 59
- Frequency management when other controls are functioning 59
- I control if the operating frequency is not change more than a certain fixed time adjust the frequency up and down according to the 59
- Indoor frequency command 59
- Pi control determine frequency up down by 59
- Set a maximum value as an lower limit frequency among the frequency lower limits of the following functions pressure difference upkeep 4 determine prohibited frequency 59
- Set a minimum value as an upper limit frequency among the frequency upper limits of the following functions compressor protection input current discharge pipes freeze up protection dew prevention fin thermistor temperature 59
- Th off thermostat off 59
- There is a certain prohibited frequency such as a power supply frequency 59
- Upper and lower limit of frequency by pi control the frequency upper and lower limits are set depending on indoor unit when low noise commands come from the indoor unit or when outdoor unit low noise or quiet commands come from indoor unit the upper limit frequency must be lowered than the usual setting 59
- When frequency is drooping frequency management is carried out only when the frequency droops 59
- When starting the compressor or when conditions are varied due to the change of the room the frequency must be initialized according to the 59
- Controls at mode changing start up 60
- Four way valve operation compensation 60
- Four way valve switching 60
- Preheating operation 60
- 3 minute standby 61
- Compressor protection function 61
- Detail divide the zone 61
- Discharge pipe temperature control 61
- Management within the zones 61
- Outline the discharge pipe temperature is used as the compressor s internal temperature if the discharge pipe temperature rises above a certain level the operating frequency upper limit is set to keep this temperature from going up further 61
- Prohibit to turn on the compressor for 3 minutes after turning it off except when defrosting only for heat pump model 61
- When turning the compressor from off to on the upper limit of frequency must be set as follows the function must not be used when defrosting only for heat pump model 61
- After 2 s in this zone the compressor is stopped 62
- After this the output frequency is pulled down by 2hz every second until it reaches the steady zone keep zone 62
- Detail 62
- Frequency control in each zone drooping zone 62
- Input current control 62
- Limit of the frequency is cancelled stop zone 62
- Limitation of current drooping and stop value according to the outdoor air temperature 1 in case the operation mode is cooling 62
- Outline the microcomputer calculates the input current during the compressor is running and set the frequency upper limit from such input current in case of heat pump model this control is the upper limit control function of the frequency which takes priority of the lower limit of four way valve activating compensation 62
- The current droops when outdoor air temperature becomes higher than a certain level model by model 62
- The current droops when outdoor air temperature becomes higher than a certain level model by model 2 in case the operation mode is heating only for heat pump model 62
- The maximum limit of the compressor frequency in this control is defined as operation frequency 2hz 62
- The present maximum frequency goes on reset zone 62
- Freeze up protection control 63
- Heating peak cut control 63
- Fan control 64
- Liquid compression protection function 2 64
- Control specification si04 803 65
- Defrost control 65
- Detail conditions for starting defrost the starting conditions must be made with the outdoor air temperature and heat exchanger temperature under the conditions that the system is in heating operation 6 minutes after the compressor is started and more than 28 minutes of accumulated time pass since the start of the operation or ending the defrosting conditions for canceling defrost the judgment must be made with heat exchanger temperature 4 c 22 c 65
- Function and control 65
- Outline heat pump only defrosting is carried out by the cooling cycle reverse cycle the defrosting time or outdoor heat exchanger temperature must be more than its fixed value when finishing 65
- Detail the followings are the examples of control which function in each mode by the electronic expansion valve control 66
- Electronic expansion valve control 66
- Function and control 55 66
- Outline the following items are included in the electronic expansion valve control electronic expansion valve is fully closed 1 electronic expansion valve is fully closed when turning on the power 2 pressure equalizing control open control 1 electronic expansion valve control when starting operation 2 control when frequency changed 3 control for defrosting only for heat pump model 4 control when a discharge pipe temperature is abnormally high 5 control when the discharge pipe thermistor is disconnected feedback control 1 discharge pipe temperature control 66
- Si04 803 control specification 66
- Disconnection of the discharge pipe thermistor 67
- Fully closing with power on 67
- High temperature of the discharge pipe 67
- Opening limit 67
- Pressure equalization control 67
- Starting operation control 67
- Control when frequency is changed 68
- Target discharge pipe temperature control 68
- Detection of overload and over current 69
- Insufficient gas control 69
- Malfunctions 69
- Sensor malfunction detection 69
- Additional function 70
- Compressor operating frequency is increased to pi max max hz of operating room and outdoor unit airflow rate is increased 70
- Detail forced cooling 70
- Detail i judgment by power consumption when an output frequency is exceeds 55 hz and the input current is less than specified value the adjustment is made for insufficient gas 70
- Forced operation mode 70
- Ii judgment by discharge pipe temperature when discharge pipe temperature is 30 c higher than target value and the electronic expansion value opening is 480 pulses max the adjustment is made for insufficient gas 70
- Iii judgment by the difference of temperature when the difference of the temperature is smaller than it is regarded as insufficient gas 70
- Outline forced operating mode includes only forced cooling 70
- Power supply voltage is detected each time equipment operation starts 70
- Powerful operation mode 70
- Voltage detection function 70
- Part 5 operation manual 72
- System configuration 2 2 instruction 3 72
- System configuration 73
- Caution 74
- Instruction 74
- Safety precautions 74
- Warning 74
- Consider nuisance to your neighbours from noises 75
- Electrical work 75
- Installation site 75
- System relocation 75
- Indoor unit 76
- Names of parts 76
- Indoor unit 77
- Outdoor unit 77
- On off 78
- Remote controller 78
- Preparation before operation 79
- To set the batteries 79
- Attention 80
- Choose a place from where the sig nals reach the unit 80
- Fix the holder to a wall a pillar etc with the screws supplied with the holder 80
- Place the remote controller in the remote controller holder 80
- Preparation before operation 80
- To fix the remote controller holder on the wall 80
- To operate the remote controller 80
- Be careful not to cool heat the room too much keeping the temperature setting at a moderate level helps save energy 81
- Blocking sunlight and air from outdoors increases the cooling heating effect 81
- Cancel 81
- Clogged air filters cause inefficient operation and waste energy clean them once in about every two weeks 81
- Condensation may occur on the indoor unit and drip 81
- Cover windows with a blind or a curtain 81
- If you are not going to use the air conditioner for a long period for example in spring or autumn turn the breaker off 81
- Mode fan 81
- Operation outside this humidity or temperature range may cause a safety device to disable the system 81
- Outdoor temperature 10 to 20 c indoor temperature 10 to 30 c 81
- Outdoor temperature 10 to 46 c indoor temperature 18 to 32 c indoor humidity 80 max 81
- Please note 81
- Press clock button 81
- Press timer setting button to set the clock to the present time 81
- Recommended temperature setting 81
- Sensor 81
- The air conditioner always consumes 15 35 watts of electricity even while it is not operating 81
- Tips for saving energy 81
- To set the clock 81
- Turn the breaker on 81
- Use the air conditioner in the following conditions 81
- Auto dry cool heat fan operation 82
- To change the temperature setting 82
- To start operation 82
- To stop operation 82
- Press fan setting button 83
- To change the air flow rate setting 83
- Adjusting the air flow direction 84
- Adjusting the airflow direction 84
- To adjust the horizontal blades flaps 84
- Notes on flaps and louvres angles 85
- To adjust the vertical blades louvres 85
- Powerful operation 86
- To cancel powerful operation 86
- To start powerful operation 86
- Outdoor unit quiet operation 87
- To cancel outdoor unit quiet operation 87
- To start outdoor unit quiet operation 87
- Econo operation 88
- To cancel econo opera tion 88
- To start econo operation 88
- Mold proof operation 89
- To cancel mold proof operation 89
- To set mold proof operation 89
- Intelligent eye operation 90
- To cancel the intelligent eye operation 90
- To start intelligent eye operation 90
- Caution 91
- Intelligent eye is useful for energy saving 91
- Notes on intelligent eye 91
- Timer operation 92
- To cancel the off timer operation 92
- To use off timer opera tion 92
- Attention 93
- Press cancel button 93
- Press on timer button 93
- Press on timer button again 93
- Press timer setting button until the time setting reaches the point you like 93
- To cancel on timer operation 93
- To combine on timer and off timer 93
- To use on timer operation 93
- Care and cleaning 94
- Caution 94
- Front panel 94
- Indoor unit outdoor unit and remote controller 94
- Air filter 95
- Air purifying filter green 95
- Clean or replace each filter 95
- Detach the filter element and attach a new one 95
- Dry the photocatalytic deodorizing filter in the sun 95
- Filters 95
- Maintenance 95
- Open the front grille page 22 95
- Photocatalytic deodorizing filter gray 95
- Pull out the air filters 95
- Replacement 95
- Set the air filter air purifying fil ter and photocatalytic deodorizing filter as they were and close the front grille 95
- Take off the air purifying filter photocatalytic deodorizing filter 95
- Wash the air filters with water or clean them with vacuum cleaner 95
- 1 the paper material is torn or broken during cleaning 96
- Air purifying filter without frame 96
- Before a long idle period 96
- Clean the air filters and set them again 96
- Dispose of old air filters as non burnable waste and 96
- Filters as burnable waste 96
- Operate the fan only for several hours on a fine day to dry out the inside 96
- Photocatalytic deodorizing filter without frame 96
- Press mode selector button and select fan operation 96
- Press on off button and start operation 96
- Take out batteries from the remote controller 96
- Turn off the breaker for the room air conditioner 96
- Case explanation 97
- These cases are not troubles 97
- Trouble shooting 97
- Troubleshooting 97
- Case check 98
- Check again 98
- Call the service shop immediately 99
- The power cord is abnormally hot or damaged an abnormal sound is heard during operation the safety breaker a fuse or the earth leakage breaker cuts off the operation frequently a switch or a button often fails to work properly there is a burning smell water leaks from the indoor unit 99
- Turn the breaker off and call the service shop 99
- Warning 99
- We recommend periodical maintenance 99
- Caution for diagnosis 0 2 problem symptoms and measures 1 3 service check function 2 4 troubleshooting 5 100
- Check 30 100
- Part 6 service diagnosis 100
- Caution for diagnosis 101
- Indicator lamps 101
- Problem symptoms and measures 102
- Arc433b46 4 103
- Check method 1 1 when the timer cancel button is held down for 5 seconds a 00 indication flashes on the temperature display section 103
- In the arc433 series remote controller the temperature display sections on the main unit indicate corresponding codes 103
- Note 1 a short beep and two consecutive beeps indicate non corresponding codes 2 to cancel the code display hold the timer cancel button down for 5 seconds the code display also cancels itself if the button is not pressed for 1 minute 103
- Press the timer cancel button repeatedly until a continuous beep is produced 103
- Service check function 103
- The code indication changes in the sequence shown below and notifies with a long beep 103
- Displayed only when system down occurs 106
- Error codes and description 106
- Troubleshooting 106
- Indoor unit pcb abnormality 107
- Freeze up protection control or high pressure control 108
- Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 109
- Caution 109
- Check no 6 refer to p 32 109
- Service diagnosis 109
- Troubleshooting 109
- Troubleshooting si04 803 109
- Ac motor 110
- Check no 6 refer to p 36 110
- Detection error due to faulty indoor unit pcb 110
- Fan motor or related abnormality 110
- Malfunction decision conditions 110
- Method of malfunction detection 110
- Operation halt due to breaking of the fan motor lead wires 110
- Operation halt due to breaking of wire inside the fan motor 110
- Operation halt due to faulty capacitor of the fan motor 110
- Operation halt due to short circuit inside the fan motor winding 110
- Remote controller display 110
- Supposed causes 110
- The rotation speed detected by the hall ic during fan motor operation is used to determine abnormal fan motor operation 110
- Troubleshooting 110
- When the detected rotation speed does not reach the demanded rotation speed of the target tap and is less than 50 of the maximum fan motor rotation speed 110
- Dc motor 111
- Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 112
- Caution 112
- Check no 1 refer to p 30 112
- Service diagnosis 101 112
- Si04 803 troubleshooting 112
- Troubleshooting 112
- Thermistor or related abnormality indoor unit 113
- Signal transmission error between indoor and outdoor unit 114
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 115
- Check no 0 refer to p 34 115
- Service diagnosis 115
- Troubleshooting 115
- Troubleshooting si04 803 115
- Unspecified voltage between indoor and outdoor units 116
- Outdoor unit pcb abnormality 117
- A compressor overload is detected through compressor ol 118
- Check no 1 refer to p 34 118
- Check no 4 refer to p 30 118
- Check no 5 refer to p 31 118
- Check no 6 refer to p 32 118
- Electronic expansion valve defective 118
- Four way valve malfunctioning 118
- If the compressor ol is activated twice the system will be shut down 118
- Malfunction decision conditions 118
- Method of malfunction detection 118
- Ol activation compressor overload 118
- Outdoor unit pcb defective 118
- Refrigerant shortage 118
- Remote controller display 118
- Stop valve defective 118
- Supposed causes 118
- The error counter will reset itself if this or any other error does not occur during the following 60 minute compressor running time total time 118
- The operating temperature condition is not specified 118
- Troubleshooting 118
- Water mixed in the local piping 118
- A compressor lock is detected by checking the compressor running condition through the position detection circuit 119
- Clearing condition continuous run for about 10 minutes normal 119
- Compressor harness disconnected 119
- Compressor lock 119
- Compressor locked 119
- Malfunction decision conditions 119
- Method of malfunction detection 119
- Remote controller display 119
- Supposed causes 119
- The system judges the compressor lock and cannot operation with position detection within 15 seconds after start up 119
- The system judges the compressor lock and stops due to over current 119
- The system will be shut down if the error occurs 16 times 119
- Troubleshooting 119
- Dc fan lock 120
- An input over current is detected by checking the input current value with the compressor running 121
- Check no 7 refer to p 33 121
- Check no 8 refer to p 33 121
- Error detection due to outdoor unit pcb 121
- Input over current detection 121
- Malfunction decision conditions 121
- Method of malfunction detection 121
- Over current due to compressor failure 121
- Over current due to defective outdoor unit pcb 121
- Over current due to defective power transistor 121
- Over current due to short circuit 121
- Remote controller display 121
- Supposed causes 121
- The following current with the compressor running continues for 2 seconds cooling heating above 12a 121
- Troubleshooting 121
- Four way valve abnormality 122
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 123
- Check no 1 refer to p 34 123
- Check no 5 refer to p 31 123
- Check no 6 refer to p 32 123
- Service diagnosis 123
- Troubleshooting 123
- Troubleshooting si04 803 123
- Check no 1 refer to p 34 124
- Check no 4 refer to p 30 124
- Check no 6 refer to p 32 124
- Discharge pipe temperature control 124
- Discharge pipe thermistor defective heat exchanger or outdoor air temperature thermistor defective 124
- Electronic expansion valve defective 124
- Four way valve malfunctioning 124
- If a stop takes place 4 times successively due to abnormal discharge pipe temperature the system will be shut down 124
- If the temperature being detected by the discharge pipe thermistor rises above c the compressor will stop the error is cleared when the temperature has dropped below c 124
- Malfunction decision conditions 124
- Method of malfunction detection 124
- Outdoor unit pcb defective 124
- Refrigerant shortage 124
- Remote controller display 124
- Stop temperatures 124
- Stop valve defective 124
- Supposed causes 124
- The discharge pipe temperature control stop frequency drooping etc is checked with the temperature being detected by the discharge pipe thermistor 124
- The error counter will reset itself if this or any other error does not occur during the following 60 minute compressor running time total time 124
- Troubleshooting 124
- Water mixed in the local piping 124
- High pressure control in cooling 125
- Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 126
- Caution 126
- Check no 4 refer to p 30 126
- Check no 6 refer to p 32 126
- Check no 7 refer to p 33 126
- Check no 9 refer to p 34 126
- Service diagnosis 115 126
- Si04 803 troubleshooting 126
- Troubleshooting 126
- Compressor system sensor abnormality 127
- A compressor startup failure is detected by checking the compressor running condition through the position detection circuit 128
- Check no 3 refer to p 35 128
- Clearing condition continuous run for about 10 minutes normal 128
- Compressor itself defective 128
- Compressor relay cable disconnected 128
- Input voltage out of specification 128
- Malfunction decision conditions 128
- Method of malfunction detection 128
- Outdoor unit pcb defective 128
- Position sensor abnormality 128
- Remote controller display 128
- Stop valve closed 128
- Supposed causes 128
- The compressor fails to start in about 15 seconds after the compressor run command signal is sent 128
- The system will be shut down if the error occurs 16 times 128
- Troubleshooting 128
- Dc voltage current sensor abnormality 129
- Thermistor or related abnormality outdoor unit 130
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 131
- Check no 6 refer to p 32 131
- Discharge pipe thermistor 131
- Outdoor air temperature thermistor 131
- Outdoor heat exchanger thermistor 131
- Radiation fin thermistor 131
- Service diagnosis 131
- Troubleshooting 131
- Troubleshooting si04 803 131
- Electrical box temperature rise 132
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 133
- Check no 6 refer to p 32 133
- Check no 7 refer to p 33 133
- Check no 9 refer to p 34 133
- Service diagnosis 133
- Troubleshooting 133
- Troubleshooting si04 803 133
- Radiation fin temperature rise 134
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 135
- Check no 6 refer to p 32 135
- Check no 7 refer to p 33 135
- Check no 9 refer to p 34 135
- Note1 refer to 1 application of silicon grease to a power transistor and a diode bridge on p198 135
- Service diagnosis 135
- Troubleshooting 135
- Troubleshooting si04 803 135
- Output over current detection 136
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 137
- Check no 3 refer to p 35 137
- Check no 7 refer to p 33 137
- Check no 8 refer to p 33 137
- Service diagnosis 137
- Troubleshooting 137
- Troubleshooting si04 803 137
- Insufficient gas 138
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 139
- Check no 4 refer to p 30 139
- Check no 6 refer to p 32 139
- Service diagnosis 139
- Troubleshooting 139
- Troubleshooting si04 803 139
- An abnormal voltage rise is detected by checking the specified over voltage detection circuit 140
- An over voltage signal is fed from the over voltage detection circuit to the microcomputer the voltage is over 400v 140
- Clearing condition continuous run for about 10 minutes normal 140
- Malfunction decision conditions 140
- Method of malfunction detection 140
- Over voltage detection 140
- Over voltage detection circuit defective 140
- Pam control part s defective 140
- Remote controller display 140
- Supply voltage not as specified 140
- Supposed causes 140
- The system will be shut down if the error occurs 255 times 140
- Troubleshooting 140
- Electronic expansion valve check 141
- Fan motor connector output check 141
- How to check 141
- Check no 5 142
- Four way valve performance check 142
- Service diagnosis 131 142
- Si04 803 check 142
- Check no 6 remove the connectors of the thermistors on the pcb and measure the resistance of each thermistor using tester the relationship between normal temperature and resistance is shown in the graph and the table below 143
- Thermistor resistance check 143
- Check no 7 144
- Check no 8 144
- Discharge pressure check 144
- Installation condition check 144
- Service diagnosis 133 144
- Si04 803 check 144
- Check no 0 measure the power supply waveform between pins 1 and 2 on the terminal board and check the waveform disturbance 145
- Check no 1 145
- Check no 9 dc motor 145
- Check si04 803 145
- Check to see if the power supply waveform is a sine wave fig 145
- Check to see if there is waveform disturbance near the zero cross sections circled in fig 145
- Fig fig 145
- Inverter units refrigerant system check 145
- Outdoor unit fan system check 145
- Power supply waveforms check 145
- Service diagnosis 145
- Check no 3 146
- Disconnect the compressor harness connector from the outdoor unit pcb to disengage the connector press the protrusion on the connector then follow the procedure below to measure resistance between power transistor and and the u v and w terminals of the compressor connector with a multi tester evaluate the measurement results for a pass fail judgment 146
- If the fuse is blown out the outdoor unit fan may also be in trouble check the fan too if the voltage in step 2 is not applied it means the pcb is defective replace the pcb if the pulse in step 4 is not available it means the hall ic is defective replace the dc fan motor if there are both the voltage 2 and the pulse 4 replace the pcb 146
- Make sure the voltage of 320 30v is being applied 1 stop the operation first and then the power off and disconnect the connector s70 2 make sure there is about dc 320 v between pins 4 and 7 3 with the system and the power still off reconnect the connector s70 4 make a turn of the fan motor with a hand and make sure the pulse 0 15 v appears twice at pins 1 and 4 146
- Note check to make sure that the voltage between the terminal of power transistor and is approx 0 volt before checking power transistor 146
- Power transistor check 146
- Propeller fan motor s70 146
- Turning speed pulse input on the outdoor unit pcb check 146
- Hall ic check 147
- Indoor unit 38 148
- Outdoor unit 70 148
- Part 7 removal procedure 148
- Indoor unit 149
- Removal of air filter 149
- Removal of front panel 151
- Remove the front panel caution on mounting 152
- When mounting the front panel fit the right and left rotary shafts one by one into the grooves and fully push them in position 152
- Removal of front grille 153
- Removal of horizontal blades and vertical blades 156
- Remove the horizontal blade small while bending the fixed part at the center slightly 157
- Removing the horizontal blade small 157
- Unfasten the key type fixing shaft at the right side 157
- Unfasten the left side 157
- Removal of electrical box 159
- Removal of pcb 162
- Removal of drain pan unit 169
- Removal of fan motor 173
- Remove the fan motor 174
- Unfasten the hook a of the fan motor fixing plate with your thumb 174
- Unfasten the hook c 174
- Removal of heat exchanger 175
- Removal of fan rotor 178
- Outdoor unit 181
- Removal of panels and fan motor 181
- Loosen the screw to remove the fan motor fixing frame 186
- When reassembling fit the lower hook into the bottom frame 186
- Loosen the 4 screws on the right side 188
- Loosen the screw and lift the connection port to remove 188
- Lift up the right side panel to remove 189
- When reassembling make sure to fit the hook 189
- Removal of electrical box 190
- Lift and remove the electrical box 193
- Removal of reactor and partition plate 194
- Removal of sound blanket 196
- Pull the sound blanket inner out 197
- Since the piping ports on the sound blanket are torn easily remove the blanket carefully 197
- Removal of four way valve 198
- Removal of compressor 201
- Heat up the brazed part of the suction side and disconnect 202
- Lift the compressor up and remove it 202
- Removal of pcb 203
- Lift and pull out the pcb 204
- Loosen the 4 screws 204
- The positions of screws are different according to the models 204
- Undo the 3 hooks on the upper side 204
- Others 96 206
- Part 8 others 206
- Others 207
- Test run from the remote controller 207
- Control pcb of the indoor unit 1 remove the front grille 3 screws 2 remove the electrical box 1 screw 3 remove the drip proof plate 4 tabs 4 cut the address jumper ja on the control pcb 208
- How to set the different addresses 208
- Jumper setting 208
- Jumper settings 208
- When two indoor units are installed in one room the two wireless remote controllers can be set for different addresses 208
- When two units are installed in one room 208
- Wireless remote controller 1 slide the front cover and take it off 2 cut the address jumper j4 208
- Application of silicon grease to a power transistor and a diode bridge 209
- Not applied paper wastage 209
- Ok evenly applied silicon grease ng not evenly applied ng foreign object 209
- Power transistor trm tpm igbt ipm spm etc 209
- Take out a pcb diode bridge diode bridge rectifier stack etc 209
- Part 9 appendix 210
- Piping diagrams 00 210
- Wiring diagrams 05 210
- Ftkd35dvm ftkd35dvma ftkd35dv2z ftxd25dvma ftxd25dv2z 211
- Ftks25 35dvm ftks25 35evma ftkd25dvm ftkd25dvma ftkd25dv2z 211
- Indoor units 211
- Piping diagrams 211
- Appendix 201 212
- Ftxd35dvma ftxd35dv2z ftxs25 35evma ftyn25 35dv1a 212
- Si04 803 piping diagrams 212
- Appendix 213
- Cooling only 213
- Outdoor units 213
- Piping diagrams si04 803 213
- Rks25davm 213
- Rks35davm rks25 35ebvma 213
- Appendix 203 214
- Rkd25davm rkd25davma rkd25dav2z 214
- Rkd35davm rkd35davma rkd35dav2z 214
- Si04 803 piping diagrams 214
- Appendix 215
- Heat pump 215
- Piping diagrams si04 803 215
- Rxs25 35ebvma ryn35dav1a 215
- Ryn25dav1a 215
- Appendix 205 216
- Rxd25davma rxd25dav2z 216
- Rxd35davma rxd35dav2z 216
- Si04 803 piping diagrams 216
- Appendix 217
- Ftkd25 35dvm ftk x d25 35dvma ftk x d25 35dv2z 217
- Ftks25 35dvm ftk x s25 35evma 217
- Indoor units 217
- Wiring diagrams 217
- Wiring diagrams si04 803 217
- Appendix 207 218
- D052476 218
- Ftyn25 35dv1a 218
- Si04 803 wiring diagrams 218
- Appendix 219
- D046718c 219
- Field wiring 219
- Outdoor units 219
- Rkd25 35davm rk x d25 35davma rk x d25 35dav2z 219
- Rks25 35davm rk x s25 35ebvma ryn25 35dav1a 219
- Wiring diagrams si04 803 219
- Numerics 220
- Wide angle louvres 2 wiring diagrams 06 223
- Drawings flow charts 224
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