![Daikin FTXS50D2V1W [251/359] Thermistor or related abnormality indoor unit](/img/pdf.png)
Daikin FTXS50D2V1W [251/359] Thermistor or related abnormality indoor unit
![Daikin FTKS50D2V1L [251/359] Thermistor or related abnormality indoor unit](/views2/1771997/page251/bgfb.png)
Troubleshooting SiBE12-728
240 Service Diagnosis
5.6 Thermistor or Related Abnormality (Indoor Unit)
Remote
Controller
Display
C4
,
C9
Method of
Malfunction
Detection
The temperatures detected by the thermistors are used to determine thermistor errors.
Malfunction
Decision
Conditions
When the thermistor input is more than 4.96 V or less than 0.04 V during compressor
operation
∗
.
∗
(reference)
When above about 212°C (less than 120 ohms) or below about -50°C (more than 1,860 kohms).
Note: The values vary slightly in some models.
Supposed
Causes
Faulty connector connection
Faulty thermistor
Faulty PCB
Troubleshooting
Check No.06
Refer to P.276
C4
: Heat exchanger temperature thermistor
C9
: Room temperature thermistor
YES
(R7134)
NO
Check No. 06
Check the thermistor resistance
value.
YES
NO
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Correct the connection.
Replace the thermistor.
(Replace the indoor unit PCB.)
Replace the indoor unit PCB.
Is it normal?
Is it normal?
Check the connector connection.
Содержание
- E series 1
- Sibe12 728 1
- Cooling only indoor unit 2
- Heat pump indoor unit 2
- Outdoor unit 2
- Super multi nx e series 2
- Table of contents 2
- Control specification 2 3
- Function of main structural parts 7 3
- Introduction v 3
- List of functions 3
- Main functions 0 3
- Part 1 list of functions 3
- Part 2 specifications 3 3
- Part 3 printed circuit board connector wiring diagram 7 3
- Part 4 function and control 9 3
- Printed circuit board connector wiring diagram 8 3
- Specifications 4 3
- Caution for diagnosis 24 4
- Code indication on the remote controller 31 4
- Instruction 03 4
- Part 5 operation manual 01 4
- Part 6 service diagnosis 23 4
- Problem symptoms and measures 26 3 service check function 27 4
- System configuration 02 4
- Troubleshooting 32 4
- Check 73 5
- Drawings flow charts v 5
- Index i 5
- Others 22 5
- Outdoor unit 84 5
- Part 7 removal procedure 83 5
- Part 8 others 21 5
- Part 9 appendix 27 5
- Piping diagrams 28 5
- Wiring diagrams 35 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
- Cooling only models 13
- Holding functions no functions 13
- List of functions 13
- List of functions sibe12 728 13
- Holding functions no functions 14
- List of functions 3 14
- Sibe12 728 list of functions 14
- Holding functions no functions 15
- List of functions 15
- List of functions sibe12 728 15
- Holding functions no functions 16
- List of functions 5 16
- Sibe12 728 list of functions 16
- Holding functions no functions 17
- List of functions 17
- List of functions sibe12 728 17
- Heat pump models 18
- Holding functions no functions 18
- List of functions 7 18
- Sibe12 728 list of functions 18
- Holding functions no functions 19
- List of functions 19
- List of functions sibe12 728 19
- Holding functions no functions 20
- List of functions 9 20
- Sibe12 728 list of functions 20
- List of functions 21
- List of functions sibe12 728 21
- Holding functions no functions 22
- List of functions 11 22
- Sibe12 728 list of functions 22
- Holding functions no functions 23
- List of functions 23
- List of functions sibe12 728 23
- Part 2 specifications 24
- Specifications 4 24
- Indoor units cooling only 25
- Specifications 25
- Specifications sibe12 728 25
- Wall mounted type 50hz 230v 25
- Hz 230v 26
- Sibe12 728 specifications 26
- Specifications 15 26
- Hz 230v 27
- Specifications 27
- Specifications sibe12 728 27
- Hz 230v 28
- Sibe12 728 specifications 28
- Specifications 17 28
- Duct connected type 50hz 230v 29
- Specifications 29
- Specifications sibe12 728 29
- Hz 230v 30
- Sibe12 728 specifications 30
- Specifications 19 30
- Floor ceiling suspended dual type 50hz 230v 31
- Specifications 31
- Specifications sibe12 728 31
- Floor standing type 50hz 230v 32
- Sibe12 728 specifications 32
- Specifications 21 32
- Ceiling suspended type 50hz 230v 33
- Specifications 33
- Specifications sibe12 728 33
- Hz 230v 34
- Outdoor units cooling only 34
- Sibe12 728 specifications 34
- Specifications 23 34
- Hz 230v 35
- Indoor units heat pump 35
- Specifications 35
- Specifications sibe12 728 35
- Wall mounted type 35
- Hz 230v 36
- Sibe12 728 specifications 36
- Specifications 25 36
- Hz 230v 37
- Specifications 37
- Specifications sibe12 728 37
- Hz 230v 38
- Sibe12 728 specifications 38
- Specifications 27 38
- Hz 230v 39
- Specifications 39
- Specifications sibe12 728 39
- Hz 230v 40
- Sibe12 728 specifications 40
- Specifications 29 40
- Duct connected type 50hz 230v 41
- Specifications 41
- Specifications sibe12 728 41
- Hz 230v 42
- Sibe12 728 specifications 42
- Specifications 31 42
- Floor ceiling suspended dual type 50hz 230v 43
- Specifications 43
- Specifications sibe12 728 43
- Floor standing type 50hz 230v 44
- Sibe12 728 specifications 44
- Specifications 33 44
- Ceiling suspended type 50hz 230v 45
- Specifications 45
- Specifications sibe12 728 45
- Hz 230v 46
- Outdoor units heat pump 46
- Sibe12 728 specifications 46
- Specifications 35 46
- Part 3 printed circuit board connector wiring diagram 48
- Printed circuit board connector wiring diagram 8 48
- Ftk x s20 50d 49
- Printed circuit board connector wiring diagram 49
- Wall mounted type 49
- Pcb 2 signal receiver pcb pcb 3 display pcb 50
- Pcb 4 intelligent eye sensor pcb 50
- Pcb detail pcb 1 control pcb 50
- Printed circuit board connector wiring diagram 39 50
- Sibe12 728 printed circuit board connector wiring diagram 50
- Ftk x s20 35c 51
- Printed circuit board connector wiring diagram 41 52
- Sibe12 728 printed circuit board connector wiring diagram 52
- Pcb 3 intelligent eye sensor pcb 53
- Pcb detail pcb 1 control pcb pcb 2 signal receiver pcb 53
- Printed circuit board connector wiring diagram 53
- Printed circuit board connector wiring diagram sibe12 728 53
- Ftk x s50 71f 54
- Pcb 2 signal receiver pcb pcb 3 buzzer pcb 55
- Pcb 4 display pcb pcb 5 intelligent eye sensor pcb 55
- Pcb detail pcb 1 control pcb indoor unit 55
- Printed circuit board connector wiring diagram 55
- Printed circuit board connector wiring diagram sibe12 728 55
- Ftxg25 35e ctxg50e 56
- Pcb 2 signal receiver pcb 57
- Pcb 3 intelligent eye sensor pcb 57
- Pcb detail pcb 1 control pcb indoor unit 57
- Printed circuit board connector wiring diagram 57
- Printed circuit board connector wiring diagram sibe12 728 57
- Duct connected type 58
- Pcb detail pcb 2 display pcb 59
- Floor ceiling suspended dual type 60
- Pcb 3 display pcb 62
- Pcb 4 signal receiver pcb 62
- Printed circuit board connector wiring diagram 51 62
- Sibe12 728 printed circuit board connector wiring diagram 62
- Floor standing type 63
- Pcb 2 control pcb 64
- Pcb 3 service pcb pcb 3 display pcb 64
- Pcb detail pcb 1 sensor pcb 64
- Printed circuit board connector wiring diagram 53 64
- Sibe12 728 printed circuit board connector wiring diagram 64
- Ceiling suspended type 65
- Ec0606 a 66
- Pcb detail 66
- Printed circuit board connector wiring diagram 55 66
- Sibe12 728 printed circuit board connector wiring diagram 66
- Outdoor units 67
- Pcb 2 service monitor pcb 5 room model 68
- Pcb detail pcb 1 main pcb 68
- Printed circuit board connector wiring diagram 57 68
- Sibe12 728 printed circuit board connector wiring diagram 68
- Control specification 2 70
- Function of main structural parts 7 70
- Main functions 0 70
- Part 4 function and control 70
- Additional control parameters 71
- Drawing of inverter the following drawing shows a schematic view of the inverter principle 71
- Forced cooling heating operation 71
- Frequency principle 71
- Frequency restrictions 71
- Initial settings 71
- 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 71
- 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 71
- Main functions 71
- Note see the list of functions for the functions applicable to different models 71
- The difference between the room temperature and the set temperature 71
- The load condition of the operating indoor unit 71
- The target frequency is adapted by additional parameters in the following cases 71
- 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 72
- Energy saving heating and cooling once the set temperature is reached the energy saving operation enables to maintain the room temperature at low power 72
- Even during extreme cold weather the high capacity is achieved it is maintained even when the outdoor air temperature is 2 c 72
- Forced cooling heating operation for more information refer to forced operation mode on page 95 72
- Frequency limits the following table shows the functions that define the minimum and maximum frequency 72
- Inverter features the inverter provides the following features 72
- Quick heating and quick cooling the compressor rotational speed is increased when starting the heating or cooling this enables a quick set temperature 72
- The regulating capacity can be changed according to the changes in the outdoor air temperature and cooling heating load 72
- Power airflow dual flaps wide angle louvers and auto swing 73
- Ftk x s20 50d the vertical swing flap is controlled not to blow the air directly on the person in the room 74
- The airflow rate is controlled automatically within the following steps cooling l tap mh tap same as automatic heating ml tap m tap 74
- The latest command has the priority between powerful and comfort airflow 74
- Control flow 75
- D signal after the front panel starts moving 3 opening the flap fully after the front panel opens fully 4 making the fan rotate when the flap passes over the fan banned area 75
- Ftxg25 35e ctxg50e the system carries out the following control at the beginning to conduct every functional parts properly 1 opening the front panel fully 2 output of the 75
- Function and control 75
- Main functions sibe12 728 75
- Operation starting control 75
- Timing chart 75
- Automatic air flow control for cooling 76
- Automatic air flow control for heating 76
- Control mode the airflow rate can be automatically controlled depending on the difference between the set temperature and the room temperature this is done through phase control and hall ic control 76
- Fan speed control for indoor units 76
- For more information about hall ic refer to the troubleshooting for fan motor on page 237 76
- Note 1 fan stops during defrost operation 2 in time of thermostat off the fan rotates at the following speed cooling the fan keeps rotating at the set tap heating the fan stops 76
- On heating mode the indoor fan speed will be regulated according to the indoor heat exchanger temperature and the difference between the room temperature and the required set point 76
- Phase steps phase control and fan speed control contains 9 steps lll ll sl l ml m mh h and hh in automatic operation the step sl is not available 76
- The following drawing explains the principle of fan speed control for cooling 76
- Within this range the airflow rate is automatically controlled when the fan setting button is set to automatic 76
- 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 77
- Programme dry function 77
- Programme dry function removes humidity while preventing the room temperature from lowering since the microcomputer controls both the temperature and air flow volume the temperature adjustment and fan adjustment buttons are inoperable in this mode 77
- Zone a thermostat off 77
- Zone b zone b 77
- Zone c thermostat on 77
- Automatic operation 78
- Cooling dry 79
- Duct connected type 79
- Floor ceiling suspended type 79
- Floor standing type 79
- Function and control 79
- Heating 79
- Main functions sibe12 728 79
- The monitoring time has passed while the temperature difference is in the zone b cooling dry 10 minutes heating 10 seconds 79
- The operation turns on in any zones except a 79
- The system resumes from defrost control in any zones except a 79
- The temperature difference is above the zone c after being in the zone a 79
- The temperature difference is in the zone a 79
- Thermostat control 79
- Thermostat control is based on the difference between the room temperature and the setpoint 79
- Thermostat off condition 79
- Thermostat on condition 79
- Wall mounted type 79
- Night set mode 80
- Econo mode 81
- 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 100msec it judges human is in the room as the motion signal is on 82
- Function and control 71 82
- In case of fan mode the fan speed reduces by 50 rpm 82
- Intelligent eye wall mounted type only 82
- Processing 1 detection method by intelligent eye 82
- Sibe12 728 main functions 82
- The motions for example in cooling 82
- 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 82
- This sensor detects human motion by receiving infrared rays and displays the pulse wave output 82
- 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 2 c higher dry 1 c higher and auto according to the operation mode at that time 82
- Home leave operation 84
- 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 85
- Ex powerful operation in cooling mode 85
- In case of ftk x s20 50d 85
- Inverter powerful operation 85
- 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 85
- Refer to fan speed control on page 65 for detail 85
- An on off button is provided on the front panel of the unit use this button when the remote controller is missing or if its battery has run out every press of the button switches from on to off or from off to on in case of ftk x s20 50d 86
- Forced operation mode will be set by pressing the on off button for between 5 to 9 sec while the unit is not operating 86
- Heat pump only in order to prevent the cold air blast that normally comes when heating is started the temperature of the heat exchanger of the indoor unit is detected and either the air flow is stopped or is made very weak thereby carrying out comfortable heating of the room the cold air blast is also prevented using a similar control when the defrosting operation is started or when the thermostat gets turned on 86
- Hot start function 86
- Note when the on off button is pressed for 10 sec or more the operation will be stopped see page 95 for the detail of forced operation mode 86
- On off button on indoor unit 86
- Other functions 86
- Push this button once to start operation push once again to stop it 86
- Signal receiving sign 86
- The operation mode refers to the following table 86
- This button is useful when the remote controller is missing 86
- When the indoor unit receives a signal from the remote controller the unit emits a signal receiving sound 86
- Air purifying filter 87
- Air purifying filter with photocatalytic deodorizing function 87
- Auto restart function 87
- Mold proof air filter prefilter 87
- Photocatalytic deodorizing filter 87
- Self diagnosis digital display 87
- Titanium apatite photocatalytic air purifying filter 87
- Weekly timer operation 87
- Cooling only model 88
- Function and control 77 88
- Function of main structural parts 88
- Heat pump model 88
- Main structural parts 88
- Note expansion valve in case of 4 port model eva d 5 port model eva e 88
- Sibe12 728 function of main structural parts 88
- Function of thermistor 89
- Heat pump model 89
- Cooling only model 91
- Control specification 93
- Control specification sibe12 728 93
- Detail 1 for heat pump model there are following modes stop cooling includes drying heating include defrosting 93
- Determine operating mode judge the operating mode command set by each room in accordance with the instructing procedure and determine the operating mode of the system the following procedure will be taken as the modes conflict with each other 1 the system will follow the mode determined first first push first set 2 for the rooms set with different mode select stand by mode operation lamp flashes 93
- For cooling only model there are following models stop and cooling including drying 93
- Function and control 93
- Mode hierarchy 93
- Note unless specified otherwise an indoor dry operation command must be regarded as cooling operation in case an indoor fan operation command is made the operation mode of an outdoor unit is stop mode a forced fan command to the indoor unit from the outdoor unit must be made during forced operation 93
- 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 93
- Frequency control 94
- D signal 1 p control calculate a total of the 95
- D signal and is used for frequency command 95
- D signal the difference between a room temperature and the temperature set by the remote controller will be taken as the 95
- D value in each sampling time 20 seconds and adjust the frequency according to its difference from the frequency previously calculated 2 i control if the operating frequency is not change more than a certain fixed time adjust the frequency up and down according to the 95
- D value is large increase the frequency 3 limit of frequency variation width when the difference between input current and input current drooping value is less than 1 a the frequency increase width must be limited 4 frequency management when other controls are functioning 95
- D value is small lower the frequency when the 95
- D value obtaining the fixed 95
- D value of each room and a total value of q 95
- D value when the 95
- Determine lower limit frequency 95
- Determine prohibited frequency 95
- Determine upper limit frequency 95
- For limiting lower limit frequency management is carried out only when the frequency rises 5 upper and lower limit of frequency by pi control the frequency upper and lower limits are set depending on the total of s values of a room when low noise commands come from the indoor unit more than one room or when outdoor unit low noise or quiet commands come from all the rooms the upper limit frequency must be lowered than the usual setting 95
- Indoor frequency command 95
- Pi control determine frequency up down by 95
- Q of the operating room the room in which the thermostat is set to on q value indoor unit output determined from indoor unit volume air flow rate and other factors 95
- Set a maximum value as an lower limit frequency among the frequency lower limits of the following functions pressure difference upkeep 95
- 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 95
- Th off thermostat off indoor unit capacity s value the capacity of the indoor unit is a s value and is used for frequency command 95
- There is a certain prohibited frequency such as a power supply frequency 95
- When each frequency is drooping frequency management is carried out only when the frequency droops 95
- When starting the compressor or when conditions are varied due to the change of the operating room the frequency must be initialized according to the total of a maximum 95
- 3 minute stand by 96
- Compressor protection function 96
- Controls at mode changing start up 96
- Four way valve operation compensation 96
- Four way valve switching 96
- Preheating operation 96
- Discharge pipe temperature control 97
- Input current control 97
- Freeze up protection control 98
- Heating peak cut control 98
- Fan control 99
- Liquid compression protection function 2 99
- Defrost control 100
- Electronic expansion valve control 101
- Detail the followings are the examples of control which function in each mode by the electronic expansion valve control 102
- Function and control 91 102
- Sibe12 728 control specification 102
- Fully closing with power on 103
- Gas pipe isothermal control during cooling 103
- Opening limit 103
- Pressure equalization control 103
- Sc control 103
- Starting operation control changing operation room 103
- Control when frequency is changed 104
- Disconnection of the discharge pipe thermistor 104
- High temperature of the discharge pipe 104
- Oil recovery function 104
- Target discharge pipe temperature control 104
- Detection of overload and over current 105
- Insufficient gas control 105
- Malfunctions 105
- Sensor malfunction detection 105
- Detail forced cooling forced heating only for heat pump model 106
- Detail i judgment by power consumption when an output frequency is exceeds 40 hz and the input current is less than specified value the adjustment is made for insufficient gas 106
- During cooling if the heat exchanger temperature in the operation stopped room becomes below the specified temperature for the specified time open the electronic expansion valve in the operation stopped room as specified and carry out the fully closed operation after this if freezing abnormality occurs more than specified time the system shall be down as the system abnormality 106
- Forced operation mode 106
- Ii judgment by discharge pipe temperature when discharge pipe temperature is c higher than target value and the electronic expansion value opening is 450 pulses max the adjustment is made for insufficient gas 106
- Outline forced operating mode includes functions such as forced cooling forced heating incorrect wiring incorrect piping check operating mode must be selected by operating the forced operation switch 106
- Preventing indoor freezing 106
- Wiring error check 107
- Checking the current setting data on the microcomputer memory 108
- Example let s suppose the led indicators are flashing as follows 108
- Function and control 97 108
- Sibe12 728 control specification 108
- The above means that port a is connected with port b and port b with room a or self corrected this way 108
- Those data can be checked by looking at the service monitor led indicators when the wiring error checking is over during forced operation at the stop of the system the led indicators stop flashing when the forced operation is over led1 room a wiring led2 room b wiring 1st flashing led port a piping 2nd flashing led port b piping the first stay on led means the room that is connected with port a the next stay on led means the one connected with port b 108
- Additional function 109
- Connection pipe condensation preventing function 109
- Powerful operation mode 109
- Priority room setting 109
- Voltage detection function 109
- Cooling heating mode lock 110
- Econo mode proof setting 110
- Operation the econo mode can be switched over between effective and ineffective by pressing the forced operation switch sw1 and wiring error check switch sw3 at the same time and holding them for 5 seconds while the compressor is stopped the leds are lit in turn for 15 seconds to show the econo mode status the factory setting is effective 110
- Outline when installing in hotels you can make econo mode ineffective on the outdoor unit 110
- The following specifications apply to the connector housing and pins jst products housing vhr 5n pin svh 21t 1 1 note that forced operation is also possible in cool heat mode 110
- Instruction 03 112
- Part 5 operation manual 112
- System configuration 02 112
- Operation instructions 113
- System configuration 113
- Ftk x s ftxg ctxg fdk x s flk x s series 114
- Illustrations are for wall mounted type ftk x s50 60 71f as representative 114
- Instruction 114
- Manual contents and reference page 114
- Caution 115
- Safety precautions 115
- Warning 115
- Consider nuisance to your neighbours from noises 116
- Electrical work 116
- Installation site 116
- System relocation 116
- Indoor unit 117
- Names of parts 117
- Indoor unit 118
- Outdoor unit 118
- Arc433b50 b4 119
- On off 119
- Remote controller 119
- Ftk x s 20 25 35 c 120
- Indoor unit 120
- Names of parts 120
- Indoor unit 121
- Outdoor unit 121
- Remote controller 122
- Indoor unit 123
- Names of parts 123
- 60 class 71 class 124
- Indoor unit 124
- Outdoor unit 124
- Arc433b70 7 125
- Remote controller 125
- Indoor unit 126
- Names of parts 126
- Indoor unit 127
- Outdoor unit 127
- Remote controller 128
- Indoor unit 129
- Names of parts 129
- Indoor unit 130
- Outdoor unit 130
- Arc433b69 b76 131
- Remote controller 131
- Caution 132
- Flk x s 25 35 50 60 b 132
- Indoor unit 132
- Names of parts 132
- Opening the front panel 132
- Indoor unit 133
- Outdoor unit 133
- Arc433b67 b68 134
- On off 134
- Remote controller 134
- Preparation before operation 135
- To set the batteries 135
- Attention 136
- Choose a place from where the signals reach the unit 136
- Place the remote controller in the remote controller holder 136
- Preparation before operation 136
- To fix the remote controller holder on the wall 136
- To operate the remote controller 136
- Be careful not to cool heat the room too much keeping the temperature setting at a moderate level helps save energy 137
- Clogged air filters cause inefficient operation and waste energy clean them once in about every two weeks 137
- Cover windows with a blind or a curtain blocking sunlight and air from outdoors increases the cooling heating effect 137
- If you are not going to use the air conditioner for a long period for example in spring or autumn turn the breaker off 137
- Operation outside this humidity or temperature range may cause a safety device to disable the system 137
- Please note 137
- Press clock button 137
- The air conditioner always consumes 15 35 watts of electricity even while it is not operating 137
- Tips for saving energy 137
- To set the clock 137
- Turn the breaker on 137
- Use the air conditioner in the following conditions 137
- Auto dry cool heat fan operation 138
- To change the temperature setting 138
- To start operation 138
- To stop operation 138
- Press fan setting button 139
- To change the air flow rate setting 139
- Adjusting the air flow direction 140
- To adjust the horizontal blades flaps 140
- To adjust the vertical blades louvers 140
- Always use a remote controller to adjust the flaps angle if you attempt to move it forcibly with hand when it is swinging the mechanism may be broken 141
- Cool dry the flap will go up heat the flap will go down 141
- In dry mode or cool mode 141
- In fan mode 141
- In heat mode 141
- Notes on comfort airflow operation 141
- Notes on flaps and louvers angles 141
- Press comfort airflow button 141
- Press comfort airflow button again 141
- To cancel comfort airflow operation 141
- To start comfort airflow operation 141
- Adjusting the air flow direction 142
- Press swing button 142
- To adjust the horizontal blades flaps 142
- When the flaps have reached the desired position press swing button once more 142
- Instruction sibe12 728 143
- Notes on flaps and louvers angles 143
- Operation manual 143
- To adjust the vertical blades louvers 143
- Adjusting the air flow direction 144
- To adjust the horizontal blade flap 144
- To adjust the vertical blades louvers 144
- Notes on flap angle 145
- Notes on louvers angles 145
- Press either the swing button or the swing button 145
- Press the swing button and the swing button the and display will light up and the flap and louvers will move in turn 145
- To 3 d airflow 145
- To cancel 3 d airflow 145
- Adjusting the air flow direction 146
- To 3 d airflow 146
- To adjust the horizontal blade flap 146
- To adjust the vertical blades louvers 146
- To cancel 3 d airflow 146
- Cool dry the flap will go up heat the flap will go down 147
- Press comfort airflow button 147
- Press comfort airflow button again 147
- To cancel comfort airflow operation 147
- To start comfort airflow operation 147
- Adjusting the air flow direction 148
- Press swing button 148
- To adjust the horizontal blade flap 148
- When the flaps have reached the desired position press swing button once more 148
- Attention 149
- Instruction sibe12 728 149
- Notes on flap and louvers angles 149
- Operation manual 149
- To adjust the vertical blades louvers 149
- Powerful operation 150
- To cancel powerful operation 150
- To start powerful operation 150
- Outdoor unit quiet operation 151
- To cancel outdoor unit quiet operation 151
- To start outdoor unit quiet operation 151
- Econo operation 152
- To cancel econo opera tion 152
- To start econo operation 152
- Before using home leave operation 153
- Home leave operation 153
- To cancel home leave operation 153
- To start home leave operation 153
- Use as a favorite mode 154
- Use as an energy saving mode 154
- Useful in these cases 154
- What s the home leave operation 154
- Intelligent eye operation 155
- To cancel the intelligent eye operation 155
- To start intelligent eye operation 155
- Caution 156
- Intelligent eye is useful for energy saving 156
- Intelligent eye operation 156
- Notes on intelligent eye 156
- Intelligent eye operation 157
- Press sensor button 157
- Press sensor button again 157
- To cancel the intelligent eye operation 157
- To start intelligent eye operation 157
- Caution 158
- Intelligent eye is useful for energy saving 158
- Notes on intelligent eye 158
- To adjust the angle of the intelligent eye sensor 158
- Intelligent eye operation 159
- Press sensor button 159
- Press sensor button again 159
- To cancel the intelligent eye operation 159
- To start intelligent eye operation 159
- Caution 160
- Intelligent eye is useful for energy saving 160
- Notes on intelligent eye 160
- Intelligent eye operation 161
- Press sensor button 161
- Press sensor button again 161
- To cancel the intelligent eye operation 161
- To start intelligent eye operation 161
- Caution 162
- Intelligent eye is useful for energy saving 162
- Notes on intelligent eye 162
- Timer operation 163
- To cancel the off timer operation 163
- To use off timer operation 163
- Attention 164
- Press cancel button 164
- Press on timer button 164
- Press on timer button again 164
- Press timer setting button until the time setting reaches the point you like 164
- To cancel on timer operation 164
- To combine on timer and off timer 164
- To use on timer operation 164
- Caution 165
- Instruction sibe12 728 165
- Night quiet mode available only for cooling operation 165
- Note for multi system 165
- Operation manual 165
- Outdoor unit quiet operation 165
- See priority room setting on the next page 165
- Selecting the operation mode 165
- What is a multi system 165
- Note for multi system 166
- Operation mode priority 166
- Priority room setting 166
- Priority when powerful operation is used 166
- Priority when using outdoor unit quiet operation 166
- Care and cleaning 167
- Caution 167
- Front panel 167
- Indoor unit outdoor unit and remote controller 167
- Air filter 168
- Filters 168
- Maintenance 168
- Replacement 168
- Titanium apatite photocatalytic air purifying filte 168
- After operation stops turn off the breaker for the room air conditioner 169
- Before a long idle period 169
- Clean the air filters and set them again 169
- Operate the fan only for several hours on a fine day to dry out the inside 169
- Take out batteries from the remote controller 169
- Care and cleaning 170
- Caution 170
- Front panel 170
- Indoor unit outdoor unit and remote controller 170
- Air filter 171
- Air purifying filter with photocatalytic deodorizing function gray 171
- Filters 171
- Maintenance 171
- Replacement 171
- After operation stops turn off the breaker for the room air conditioner 172
- Air purifying filter with photocatalytic deodorizing function with frame 1 set 172
- Air purifying filter with photocatalytic deodorizing function without frame 1 set 172
- Before a long idle period 172
- Clean the air filters and set them again 172
- Dispose of old filters as burnable waste 172
- Operate the fan only for several hours on a fine day to dry out the inside 172
- Press mode button and select fan operation 172
- Press on off button and start operation 172
- Take out batteries from the remote controller 172
- Attach the front panel 173
- Before cleaning be sure to stop the operation and turn the breaker off 173
- Care and cleaning 173
- Caution 173
- Clean the front panel 173
- Front panel 173
- Indoor unit outdoor unit and remote controller 173
- Open the front panel 173
- Remove the front panel 173
- Wipe them with dry soft cloth 173
- After washing shake off remaining water and dry in the shade 4 174
- Air filter 174
- Clean or replace each filter 174
- Filters 174
- If it is very dirty soak it for 10 to 15 minutes in water mixed with a neutral cleaning agent 174
- Maintenance 174
- Open the front panel 174
- Pull out the air filters 174
- Remove dust with a vacuum cleaner and wash lightly with water 2 174
- Remove the tabs on the filter frame and replace with a new filter 174
- Replacement 174
- Set the air filter and the titanium apatite photocatalytic air purifying filter as they were and close the front panel 174
- Take off the titanium apatite photocatalytic air purifying filter 174
- Titanium apatite photocatalytic air purifying filter 174
- Wash the air filters with water or clean them with vacuum cleaner 174
- After operation stops turn off the breaker for the room air conditioner 175
- Before a long idle period 175
- Clean the air filters and set them again 175
- Dispose of old filters as non flammable waste 175
- Operate the fan only for several hours on a fine day to dry out the inside 175
- Press mode button and select fan operation 175
- Press on off button and start operation 175
- Take out batteries from the remote controller 175
- Titanium apatite photocatalytic air purifying filter without frame 1 set 175
- To order titanium apatite photocatalytic air purifying filter contact to the service shop there you bought the air conditioner 175
- When a multi outdoor unit is connected make sure the heating operation is not used at the other room before you use the fan operation 175
- Care and cleaning 176
- Caution 176
- Front panel 176
- Indoor unit outdoor unit and remote controller 176
- Air filter 177
- Filters 177
- Maintenance 177
- Replacement 177
- Titanium apatite photocatalytic air purifying filte 177
- After operation stops turn off the breaker for the room air conditioner 178
- Before a long idle period 178
- Clean the air filters and set them again 178
- Operate the fan only for several hours on a fine day to dry out the inside 178
- Take out batteries from the remote controller 178
- When a multi outdoor unit is connected make sure the heating operation is not used at the other room before you use the fan operation 178
- Before cleaning be sure to stop the operation and turn the breaker off 179
- Care and cleaning 179
- Caution 179
- Cleaning the air filter 179
- Fdk x s 25 35 c 179
- Only a qualified service person is allowed to perform maintenance 179
- Removing the air filter 179
- Replacing the air filter 179
- After operation stops turn off the breaker for the room air conditioner 180
- Before a long idle period 180
- Caution 180
- Clean the air filters and set them again 180
- Cleaning the drain pan 180
- Operate the fan only for several hours on a fine day to dry out the inside 180
- Take out batteries from the remote controller 180
- Before cleaning be sure to stop the operation and turn the breaker off 181
- Care and cleaning 181
- Caution 181
- Cleaning the air filter 181
- Fdk x s 50 60 c fdk x s 25 35 e 181
- Only a qualified service person is allowed to perform maintenance 181
- Removing the air filter 181
- Replacing the air filter 181
- Before a long idle period 182
- Caution 182
- Clean the air filters and set them again 182
- Cleaning the drain pan 182
- Operate the fan only for several hours on a fine day to dry out the inside 182
- Take out batteries from the remote controller 182
- Turn off the breaker for the room air conditioner 182
- Before cleaning be sure to stop the operation and turn the breaker off 183
- Care and cleaning 183
- Caution 183
- Clean the front panel 183
- Close the front panel 183
- Front panel 183
- Indoor unit outdoor unit and remote controller 183
- Open the front panel 183
- Wipe them with dry soft cloth 183
- Air filter 184
- Air purifying filter green 184
- Clean or replace each filter 184
- Detach the filter element and attach a new one 184
- Dry the photocatalytic deodorizing filter in the sun 184
- Filters 184
- Insert claws of the filters into slots of the front panel 184
- Maintenance 184
- Open the front panel 2 pull out the air filters 184
- Photocatalytic deodorizing filter gray 184
- Replacement 184
- Set the air filter air purifying filter and photocatalytic deodorizing filter as they were and close the front panel 184
- Take off the air purifying filter photocatalytic deodorizing filter 184
- Wash the air filters with water or clean them with vacuum cleaner 184
- After operation stops turn off the breaker for the room air conditioner 185
- Before a long idle period 185
- Clean the air filters and set them again 185
- Operate the fan only for several hours on a fine day to dry out the inside 185
- Take out batteries from the remote controller 185
- Case explanation 186
- These cases are not troubles 186
- Trouble shooting 186
- Troubleshooting 186
- Are operation modes all the same for indoor units connected to outdoor units in the multi system if not set all indoor units to the same operation mode and confirm that the lamps flash moreover when the operation mode is in auto set all indoor unit operation modes to cool or heat for a moment and check again that the lamps are normal if the lamps stop flashing after the above steps there is no malfunction 187
- Case check 187
- Check again 187
- Call the service shop immediately 188
- Disposal requirements 188
- 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 188
- Turn the breaker off and call the service shop 188
- Warning 188
- We recommend periodical maintenance 188
- Fault diagnosis 189
- Instruction sibe12 728 189
- Operation manual 189
- The code indication changes as shown below and notifies with a long beep 189
- Caution 190
- Fvxs series 190
- Safety precautions 190
- Warning 190
- Consider nuisance to your neighbours from noises 191
- Electrical work 191
- Installation site 191
- System relocation 191
- Caution 192
- Indoor unit 192
- Names of parts 192
- Opening the front panel 192
- 35 class 50 class 193
- Indoor unit 193
- Outdoor unit 193
- 10 12 13 15 18 20 194
- 8 11 14 194
- Remote controller 194
- Attention 195
- Preparation before operation 195
- To fix the remote controller holder on the wall 195
- To operate the remote controller 195
- To set the batteries 195
- Preparation before operation 196
- To set the clock 196
- Please note 197
- Tips for saving energy 197
- Turn the breaker on 197
- Turning on the breaker closes the flap this is a normal procedure 197
- Auto dry cool heat fan operation 198
- To change the temperature setting 198
- To start operation 198
- To stop operation 198
- Press fan setting button 199
- To change the air flow rate setting 199
- Adjusting the air flow direction 200
- Notes on flap and louvers angle 200
- To adjust the horizontal blade flap 200
- To adjust the vertical blades louvers 200
- Air flow selection 201
- Caution 201
- When setting the air flow selection switch to 201
- When setting the air outlet selection switch to 201
- Powerful operation 202
- To cancel powerful operation 202
- To start powerful operation 202
- Outdoor unit quiet operation 203
- To cancel outdoor unit quiet operation 203
- To start outdoor unit quiet operation 203
- Econo operation 204
- To cancel econo operation 204
- To start econo operation 204
- Timer operation 205
- To cancel the off timer operation 205
- To use off timer operation 205
- Attention 206
- Timer operation 206
- To cancel on timer operation 206
- To combine on timer and off timer 206
- To use on timer operation 206
- To use weekly timer operation 207
- Weekly timer operation 207
- Press button to complete the setting 208
- Press next button 208
- Press select button to select the desired temperature 208
- Weekly timer operation 208
- Press weekly button to deactivate the weekly operation 209
- To cancel weekly timer operation 209
- Canceling all reservations 210
- Canceling individual reservations 210
- Confirming a reservation 210
- Hold the weekly button for 5 seconds 210
- Press button 210
- Press select button to select the day of the week and the reservation number to be confirmed 210
- Select the day of the week to be canceled with the select button 210
- Weekly timer operation 210
- Press button 211
- Press button 2 211
- Press copy button 211
- Setting weekly timer using copy mode 211
- Night quiet mode available only for cooling operation 212
- Note for multi system 212
- Outdoor unit quiet operation 212
- Selecting the operation mode 212
- Operation mode priority 213
- Priority room setting 213
- Priority when powerful operation is used 213
- Priority when using outdoor unit quiet operation 213
- Care and cleaning 214
- Caution 214
- Front panel 214
- Indoor unit outdoor unit and remote controller 214
- Air filter 215
- Filters 215
- Maintenance 215
- Replacement 215
- Titanium apatite photocatalytic air purifying filter 215
- After operation stops turn off the breaker for the room air conditioner 216
- Before a long idle period 216
- Clean the air filters and set them again 216
- Operate the fan only for several hours on a fine day to dry out the inside 216
- Take out batteries from the remote controller 216
- Case explanation 217
- These cases are not troubles 217
- Trouble shooting 217
- Troubleshooting 217
- Are operation modes all the same for indoor units connected to outdoor units in the multi system if not set all indoor units to the same operation mode and confirm that the lamps flash moreover when the operation mode is in auto set all indoor unit operation modes to cool or heat for a moment and check again that the lamps are normal if the lamps stop flashing after the above steps there is no malfunction page 24 218
- Case check 218
- Check again 218
- Call the service shop immediately 219
- Disposal requirements 219
- 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 219
- Turn the breaker off and call the service shop 219
- Warning 219
- We recommend periodical maintenance 219
- A short beep and two consecutive beeps indicate non corresponding codes 220
- Fault diagnosis 220
- Fault diagnosis by remote controller 220
- In the arc452a series the temperature display sections on the main unit indicate corresponding codes 220
- Press the timer cancel button repeatedly until a continuous beep is produced the code indication changes as shown below and notifies with a long beep 220
- To cancel the code display hold the timer cancel button down for 5 seconds the code display also cancel itself if the button is not pressed for 1 minute 220
- When the timer cancel button is held down for 5 seconds a indication flashes on the temperature display section 220
- Fhq series 221
- Names and functions of parts 222
- Precautions for group control system or two remote controller control system 222
- Safety considerations 222
- What to do before operation 222
- All wiring must be performed by an authorized electrician 224
- Cooling 224
- D b dry bulb temperature c wb wet bulb temperature c 224
- Do not use the air conditioner in the following places a filled with much mineral oil such as cutting oil b where there is much salt such as a beach area c where sulfured gas exists such as a hot spring resort d where there are considerable voltage fluctua tions such as a factory or plant e vehicles and vessels 224
- Execute complete drain piping for perfect drainage incomplete piping may result in a water leakage the appliance is not intended for use by young children or infirm persons without supervision 224
- F where there is much spray of oil and vapor such as a cookery etc g where there are machines generating electro magnetic waves h filled with acid and or alkaline steam or vapor 224
- Heating 224
- If the temperature or the humidity is beyond the following con ditions safety devices may work and the air conditioner may not operate or sometimes water may drop from the indoor unit 224
- Installation site 224
- Is a snow protection measure taken for details consult your dealer 224
- Is the air conditioner installed at a well venti lated place where there are no obstacles around 224
- Operation range 224
- Regarding places for installation 224
- Regarding wiring 224
- The setting temperature range of the remote con troller is 16 c to 32 c 224
- Young children should be supervised to ensure that they do not play with the appliance 224
- And display on the remote controller 225
- Name and function of each switc 225
- Pay attention to running noises too 225
- Regarding drainage of drain piping 225
- Cooling heating automatic fan and program dry operation 226
- Defrost operation 226
- Explanation of heating operation 226
- On off 226
- Operation mode selec tor 226
- Operation procedure 226
- Press on off button 226
- Press operation mode selector but ton several times and select the opera tion mode of your choice as follows 226
- Regarding outside air temperature and heat ing capacity 226
- A up and down direction 227
- Adjustment press the air flow direction adjust button to select the air direction as follow ing 227
- Air flow direction adjust 227
- B left and right direction 227
- Fan speed control 227
- Movement of the air flow flap 227
- Press fan speed control button 227
- Press temperature setting button and program the setting temperature 227
- Temperature setting 227
- Optimum operation 228
- Press the programming time button and set the time for stopping or starting the sys tem 228
- Press the timer mode start stop button several times and select the mode on the display 228
- Press the timer on off button 228
- Program timer operation 228
- Programming time 228
- Timer mode start stop 228
- Timer on off 228
- How to clean the air filter 229
- Important 229
- Maintenance for service personnel 229
- How to clean air outlet and out side panels 230
- How to clean the suction grille 230
- Not malfunction of the air conditioner 230
- Start up after a long stop 230
- What to do when stopping the sys tem for a long period 230
- Indoor unit no in which a malfunction occurs 232
- Inspection display 232
- Operation lamp 232
- Trouble shooting 232
- Caution for diagnosis 24 234
- Check 73 234
- Code indication on the remote controller 31 234
- Part 6 service diagnosis 234
- Problem symptoms and measures 26 3 service check function 27 234
- Troubleshooting 32 234
- Caution for diagnosis 235
- Troubleshooting with operation lamp 235
- Problem symptoms and measures 237
- Arc433 series 1 when the timer cancel button is held down for 5 seconds a 00 indication flashes on the temperature display section 238
- Check method 1 238
- 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 238
- Press the timer cancel button repeatedly until a continuous beep is produced 238
- Service check function 238
- The code indication changes in the sequence shown below and notifies with a long beep 238
- The temperature display sections on the main unit indicate corresponding codes 238
- Arc452a series 1 when the timer cancel button is held down for 5 seconds a 00 indication flashes on the temperature display section 239
- 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 239
- Press the timer cancel button repeatedly until a continuous beep is produced 239
- The code indication changes in the sequence shown below and notifies with a long beep 239
- Timer cancel button 239
- Check method 2 240
- Code indication on the remote controller 242
- Error codes and description of fault 242
- Indoor units 243
- Not used for troubleshooting 243
- Troubleshooting 243
- Varies depending on the cases 243
- Outdoor units 244
- Indoor unit pcb abnormality 245
- Freeze up protection control or high pressure control 246
- Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 247
- Check no 6 refer to p 76 247
- Displayed the system will be reset itself but this stop will be put in the error history memory 247
- Note if the outside temperature is below 10 c in the cooling mode the system may get interrupted with error 247
- Service diagnosis 247
- Troubleshooting 247
- Troubleshooting sibe12 728 247
- Ac motor 248
- Check no 6 refer to p 82 248
- Detection error due to faulty control pcb 248
- Fan motor or related abnormality 248
- Malfunction decision conditions 248
- Method of malfunction detection 248
- Operation halt due to breaking of the fan motor lead wires 248
- Operation halt due to breaking of wire inside the fan motor 248
- Operation halt due to faulty capacitor of the fan motor 248
- Operation halt due to short circuit inside the fan motor winding 248
- Remote controller display 248
- Supposed causes 248
- The rotation speed detected by the hall ic during fan motor operation is used to determine abnormal fan motor operation 248
- Troubleshooting 248
- 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 248
- Dc motor 249
- Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 250
- Caution 250
- Check no 1 refer to p 73 250
- Check no 2 refer to p 73 250
- Service diagnosis 239 250
- Sibe12 728 troubleshooting 250
- Troubleshooting 250
- Thermistor or related abnormality indoor unit 251
- 1 pull the plug out or turn the breaker off 2 remove the decorative plate 3 remove the slot in panel 4 put the plug in or turn the breaker on wait until the initialization finishes 5 operate the unit by the indoor unit on off switch 252
- Front panel open close fault 252
- Malfunction decision conditions 252
- Malfunction of the limit switch 252
- Malfunction of the reduction motor 252
- Malfunction or deterioration of the front panel mechanism 252
- Method of malfunction detection 252
- Remote controller display 252
- Supposed causes 252
- The system will be shut down when the error occurs twice 252
- Troubleshooting 252
- Check no 0 refer to p 79 253
- Faulty outdoor unit pcb faulty indoor unit pcb 253
- Indoor unit outdoor unit signal transmission error due to wiring error due to disturbed power supply waveform due to breaking of wire in the connection wires between the indoor and outdoor units wire no 2 253
- Malfunction decision conditions 253
- Method of malfunction detection 253
- Remote controller display 253
- Short circuit inside the fan motor winding 253
- Signal transmission error between indoor and outdoor unit 253
- Supposed causes 253
- The data received from the outdoor unit in indoor unit outdoor unit signal transmission is checked whether it is normal 253
- Troubleshooting 253
- When the data sent from the outdoor unit cannot be received normally or when the content of the data is abnormal 253
- Unspecified voltage between indoor and outdoor units 254
- Freeze up protection control 255
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 256
- Check no 4 refer to p 74 256
- Check no 6 refer to p 76 256
- Service diagnosis 245 256
- Sibe12 728 troubleshooting 256
- Troubleshooting 256
- Outdoor unit pcb abnormality 257
- A compressor overload is detected through compressor ol 258
- Check no 1 refer to p 79 258
- Check no 4 refer to p 74 258
- Check no 5 refer to p 75 258
- Check no 6 refer to p 76 258
- Electronic expansion valve defective 258
- Four way valve malfunctioning 258
- If the compressor ol is activated twice the system will be shut down 258
- Malfunction decision conditions 258
- Method of malfunction detection 258
- Ol activation compressor overload 258
- Outdoor unit led display a 258
- Outdoor unit pcb defective 258
- Refrigerant shortage 258
- Remote controller display 258
- Stop valve defective 258
- Supposed causes 258
- 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 258
- The operating temperature condition is not specified 258
- Troubleshooting 258
- Water mixed in the local piping 258
- A compressor lock is detected by checking the compressor running condition through the position detection circuit 259
- Clearing condition continuous run for about 5 minutes normal 259
- Compressor lock 259
- Compressor locked 259
- Judging from current waveform generated when high frequency voltage is applied to the compressor 259
- Malfunction decision conditions 259
- Method of malfunction detection 259
- Outdoor unit led display a 259
- Remote controller display 259
- Supposed causes 259
- The system will be shut down if the error occurs 16 times 259
- Troubleshooting 259
- Dc fan lock 260
- Input over current detection 261
- Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 262
- Caution 262
- Check no 4 refer to p 81 262
- Check no 7 refer to p 77 262
- Check no 8 refer to p 78 262
- Service diagnosis 251 262
- Sibe12 728 troubleshooting 262
- Troubleshooting 262
- Discharge pipe temperature control 263
- High pressure control in cooling 264
- Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 265
- Caution 265
- Check no 4 refer to p 74 265
- Check no 6 refer to p 76 265
- Check no 7 refer to p 77 265
- Check no 9 refer to p 78 265
- Service diagnosis 265
- Troubleshooting 265
- Troubleshooting sibe12 728 265
- Compressor sensor system abnormality 266
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 267
- Service diagnosis 267
- Troubleshooting 267
- Troubleshooting sibe12 728 267
- A compressor startup failure is detected by checking the compressor running condition through the position detection circuit 268
- Check no 3 refer to p 80 268
- Clearing condition continuous run for about 5 minutes normal 268
- Compressor itself defective 268
- Compressor relay cable disconnected 268
- Input voltage out of specification 268
- Malfunction decision conditions 268
- Method of malfunction detection 268
- Outdoor unit led display a 268
- Outdoor unit pcb defective 268
- Position sensor abnormality 268
- Remote controller display 268
- Stop valve closed 268
- Supposed causes 268
- The compressor fails to start in about 15 seconds after the compressor run command signal is sent 268
- The system will be shut down if the error occurs 8 times 268
- Troubleshooting 268
- Ct or related abnormality 269
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 270
- Check no 2 refer to p 80 270
- Service diagnosis 259 270
- Sibe12 728 troubleshooting 270
- Troubleshooting 270
- Thermistor or related abnormality outdoor unit 271
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 272
- Check no 6 refer to p 76 272
- Discharge pipe thermistor 272
- Gas pipe thermistor 272
- Liquid pipe thermistor 272
- Outdoor temperature thermistor 272
- Outdoor unit heat exchanger thermistor 272
- Radiation fin thermistor 272
- Service diagnosis 261 272
- Sibe12 728 troubleshooting 272
- Troubleshooting 272
- Electrical box temperature rise 273
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 274
- Check no 7 refer to p 77 274
- Check no 9 refer to p 78 274
- Service diagnosis 263 274
- Sibe12 728 troubleshooting 274
- Troubleshooting 274
- Radiation fin temperature rise 275
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 276
- Check no 7 refer to p 77 276
- Check no 9 refer to p 78 276
- Note refer to 1 application of silicon grease to a power transistor and a diode bridge on p 325 276
- Service diagnosis 265 276
- Sibe12 728 troubleshooting 276
- Troubleshooting 276
- Output over current detection 277
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 278
- Check no 3 refer to p 80 278
- Check no 7 refer to p 77 278
- Check no 8 refer to p 78 278
- Service diagnosis 267 278
- Sibe12 728 troubleshooting 278
- Troubleshooting 278
- Insufficient gas 279
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 280
- Check no 4 refer to p 74 280
- Check no 6 refer to p 76 280
- Service diagnosis 269 280
- Sibe12 728 troubleshooting 280
- Troubleshooting 280
- An abnormal voltage rise or drop is detected by checking the detection circuit or dc voltage detection circuit 281
- An over voltage signal is fed from the over voltage detection circuit to the microcomputer or the voltage being detected by the dc voltage detection circuit is judged to be below 150 v for 0 second 281
- Clearing condition continuous run for about 60 minutes normal 281
- Low voltage detection or over voltage detection 281
- Malfunction decision conditions 281
- Method of malfunction detection 281
- Outdoor unit led display a 281
- Over voltage detector or dc voltage detection circuit defective 281
- Pam control part s defective 281
- Remote controller display 281
- Short circuit inside the fan motor winding 281
- Supply voltage not as specified 281
- Supposed causes 281
- The system will be shut down if the error occurs 16 times 281
- Troubleshooting 281
- Signal transmission error on outdoor unit pcb 282
- Anti icing function in other rooms unspecified voltage between indoor and outdoor units 283
- Check no 1 1 check connector connection 2 check motor power supply voltage output pins 4 7 and 4 8 3 check motor control voltage pins 4 3 4 check rotation command voltage output pins 4 2 5 check rotation pulse input pins 4 1 284
- Check no 2 1 check connector connection 2 check motor control voltage output pins 2 1 284
- Check no 3 remove the front grille the limit switch is located at the left side of the drain pan assembly check the continuity of the switch connection 284
- Fan motor connector output check 284
- How to check 284
- Limit switch continuity check 284
- The shutter can be opened and closed with hand keep the shutter open and closed all the way for each continuity check steps 284
- Check no 4 conduct the followings to check the electronic expansion valve ev 1 check to see if the ev connector is correctly inserted in the pcb compare the ev unit and the connector number 2 turn the power off and back on again and check to see if all the evs generate latching sound 3 if any of the evs does not generate latching noise in the above step 2 disconnect that connector and check the conductivity using a tester check the conductivity between pins 1 3 and 6 and between pins 2 4 and 5 if there is no conductivity between the pins the ev coil is faulty 4 if no ev generates latching sound in the above step 2 the outdoor unit pcb is faulty 5 if the conductivity is confirmed in the above step 2 mount a good coil which generated latching sound in the ev unit that did not generate latching sound and check to see if that ev generates latching sound 285
- Electronic expansion valve check 285
- If latching sound is generated the outdoor unit pcb is faulty 285
- If latching sound is not generated the ev unit is faulty 285
- Note please note that the latching sound varies depending on the valve type 285
- Check no 5 286
- Four way valve performance check 286
- Service diagnosis 275 286
- Sibe12 728 check 286
- 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 287
- Thermistor resistance check 287
- Check no 7 288
- Installation condition check 288
- Service diagnosis 277 288
- Sibe12 728 check 288
- Check no 8 289
- Check no 9 289
- Check sibe12 728 289
- Discharge pressure check 289
- Outdoor unit fan system check with dc motor 289
- Service diagnosis 289
- Check no 0 measure the power supply waveform between pins 1 and 3 on the terminal board and check the waveform disturbance 290
- Check no 1 290
- Check to see if the power supply waveform is a sine wave fig 290
- Check to see if there is waveform disturbance near the zero cross sections circled in fig 290
- Fig fig 290
- Inverter units refrigerant system check 290
- Power supply waveforms check 290
- Service diagnosis 279 290
- Sibe12 728 check 290
- Capacitor voltage check 291
- Check no 2 before this checking be sure to check the main circuit for short circuit 291
- Check no 3 291
- Checking the capacitor voltage 291
- Checking the power transistor 291
- For the uvw make measurements at the faston terminal on the board or the relay connector 291
- If unavoidably necessary to touch a live part make sure the power transistor s supply voltage is below 50 v using the tester 291
- Never touch any live parts for at least 10 minutes after turning off the circuit breaker 291
- Power transistor check 291
- With the circuit breaker still on measure the voltage according to the drawing of the model in question be careful never to touch any live parts 291
- Main circuit electrolytic capacitor check 292
- Turning speed pulse input on the outdoor unit pcb check 292
- Hall ic check 293
- Outdoor unit 84 294
- Part 7 removal procedure 294
- Outdoor unit 295
- Removal of outer panels 295
- Lift the top panel and remove it 297
- Remove the 2 screws on the front and 1 screw on the right side panel 297
- Remove the 5 screws 297
- Removing the right side panel 297
- Slide the panel downward to undo 2 hooks on the back side 298
- Remove the 2 screws 299
- Remove the right side panel 299
- Removing the front panel 2 299
- Remove the front panel 2 300
- Slide the panel downward to undo the hook 300
- Next slide the grille downward to undo the 2 hooks at the top 302
- Remove the discharge grille 302
- Remove the propeller fan fixing nut fan fixing nut m8 302
- Remove the 2 fixing screws on the partition plate 303
- Remove the screw at bottom left of the front 303
- Remove the screw at bottom of the left side 303
- Remove the screw at bottom of the back side 304
- The front panel 1 is provided with a hook on its front lift the front panel off position to remove it 304
- Remove the fixing screw on the partition plate 305
- Remove the front panel 1 305
- Removing the rear panel 305
- The back is a little complicated in shape be sure to detach carefully 305
- Remove the 5 screws 306
- Slide the panel leftward to undo the hook and remove the partition plate 306
- Remove the 3 screws 307
- Remove the wire fixing plate lower 307
- Remove the wire fixing plate upper 307
- Remove the 3 fixing screws on the partition plate 308
- The holder is secured in the clearances of the heat exchanger fins 308
- Undo the holder of the thermistor 308
- Lift the panel upward to undo the 2 hooks and remove it 309
- Remove the fixing screw from the bottom frame 309
- Remove the fixing screw from the shut off valve mounting plate 309
- Remove the rear panel 310
- Removal of the electrical box 311
- Lift up the electrical box to remove it 316
- Removal of pcb 317
- Removal of fan motor 321
- Removal of coils thermistors 322
- Pull out the thermistors 323
- Be careful no to lose the spring 325
- Remove the sound blanket top upper 325
- Remove the spring from the heat exchanger thermistor 325
- Slightly open the sound blanket 325
- Remove the four way valve coil 327
- Removal of sound blanket 328
- Remove the sound blanket outer sleeve 330
- Procedure warning be sure to wait 10 minutes or more after turning off all power supplies before disassembling work 331
- Pull out the 3 leads using long nose pliers 331
- Removal of compressor 331
- Remove the 3 screws 331
- Remove the ol 331
- Remove the terminal cover 331
- U red v yellow w blue 331
- Others 22 332
- Part 8 others 332
- Others 333
- Test run from the remote controller 333
- Control pcb of the indoor unit 1 remove the electrical box 2 cut the address jumper ja on the control pcb 334
- How to set the different addresses 334
- Jumper setting 334
- Jumper settings 334
- When two indoor units are installed in one room the two wireless remote controllers can be set for different addresses 334
- When two units are installed in one room 334
- Wireless remote controller 1 slide the front cover and take it off 2 cut the address jumper j4 334
- Adjusting the angle of the intelligent eye sensor 335
- Application of silicon grease to a power transistor and a diode bridge 336
- Not applied paper wastage 336
- Ok evenly applied silicon grease ng not evenly applied ng foreign object 336
- Power transistor trm tpm igbt ipm spm etc 336
- Take out a pcb diode bridge diode bridge rectifier stack etc 336
- Part 9 appendix 338
- Piping diagrams 28 338
- Wiring diagrams 35 338
- Indoor units 339
- Piping diagrams 339
- Wall mounted type 339
- Appendix 329 340
- Ctxg50ev1bw s ftxs20d3vmw l ftxs25d3vmw l ftxs35d3vmw l 340
- Ftks71fv1b ftxg25ev1bw s ftxg35ev1bw s 340
- Sibe12 728 piping diagrams 340
- Appendix 341
- Ftxs50d2v1w l ftxs20cavmb ftxs25cavmb ftxs35cavmb 341
- Ftxs50fv1b ftxs60fv1b ftxs71fv1b 341
- Piping diagrams sibe12 728 341
- Appendix 331 342
- Duct connected type 342
- Fdks25cavmb fdks35cavmb fdks50cvmb fdks60cvmb fdks25eavmb fdks35eavmb fdxs25cavmb fdxs35cavmb fdxs50cvmb fdxs60cvmb fdxs25eavmb fdxs35eavmb 342
- Flks25bavmb flks35bavmb flks50bavmb flks60bavmb 342
- Floor ceiling suspended dual type 342
- Heat exchanger 342
- Sibe12 728 piping diagrams 342
- Thermistor on heat exch 342
- Appendix 343
- Floor standing type 343
- Flxs25bavmb flxs35bavmb flxs50bavmb flxs60bavmb 343
- Fvxs25fv1b fvxs35fv1b fvxs50fv1b 343
- Piping diagrams sibe12 728 343
- Appendix 333 344
- C1220t 0 344
- Ceiling suspended type 344
- Fhq35 50 60bvv1b 344
- Field piping 344
- Indoor unit 344
- Sibe12 728 piping diagrams 344
- To outdoor unit 344
- Appendix 345
- Cooling only 345
- Heat pump 345
- Mks90e7v3b 345
- Mxs90e7v3b 345
- Outdoor units 345
- Piping diagrams sibe12 728 345
- Ftks20d3vmw l ftks25d3vmw l ftks35d3vmw l ftxs20d3vmw l ftxs25d3vmw l ftxs35d3vmw l 346
- Ftks50d2v1w l ftxs50d2v1w l 346
- Indoor units 346
- Wall mounted type 346
- Wiring diagrams 346
- Appendix 347
- Caution 347
- Ftks20cavmb ftks25cavmb ftks35cavmb ftxs20cavmb ftxs25cavmb ftxs35cavmb 347
- Ftks50fv1b ftks60fv1b ftks71fv1b ftxs50fv1b ftxs60fv1b ftxs71fv1b 347
- Wiring diagrams sibe12 728 347
- Appendix 337 348
- Duct connected type 348
- Fdks25cavmb fdks35cavmb fdks50cvmb fdks60cvmb fdks25eavmb fdks35eavmb fdxs25cavmb fdxs35cavmb fdxs50cvmb fdxs60cvmb fdxs25eavmb fdxs35eavmb 348
- Ftxg25ev1bw s ftxg35ev1bw s ctxg50ev1bw s 348
- Sibe12 728 wiring diagrams 348
- Appendix 349
- D033909e 349
- D055953 349
- Flks25bavmb flks35bavmb flks50bavmb flks60bavmb flxs25bavmb flxs35bavmb flxs50bavmb flxs60bavmb 349
- Floor ceiling suspended dual type 349
- Floor standing type 349
- Fvxs25fv1b fvxs35fv1b fvxs50fv1b 349
- Wiring diagrams sibe12 728 349
- Appendix 339 350
- Ceiling suspended type 350
- Connector 350
- D037842d 350
- Fhq35 50 60bvv1b 350
- Field wiring 350
- H2p h3p 350
- In case using central remote controller connect it to the unit in accordance with the attached installation manual 4 x24a is connected when the wireless remote controller kit is being used 5 remote controller model varies according to the combination system confirm engineering materials and catalogs etc before connecting 6 in case installing the drain pump m1p remove the jumper connector of x15a and execute the additional wiring for float switch and drain pump 7 symbols show as follows red red blk black wht white ylw yellow prp purple gry gray blu blue 350
- Note 4 x24a 350
- Sibe12 728 wiring diagrams 350
- Terminal 350
- Appendix 351
- Cooling only 351
- Heat pump 351
- Mks90e7v3b 351
- Mxs90e7v3b 351
- Outdoor units 351
- Wiring diagrams sibe12 728 351
- Numerics 352
- Drawings flow charts 356
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