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Daikin 2MXU40GV1B [2/276] Table of contents
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SiBE12-908_A
i Table of Contents
Inverter Multi System
with Humidifying
G-Series
zHeat Pump
Indoor Unit
CTXU25G2V1B
CTXU35G2V1B
CTXU42G2V1B
CTXU50G2V1B
Outdoor Unit
2MXU40GV1B
2MXU50GV1B
Содержание
- G series 1
- Inverter multi system with humidifying 1
- Manual 1
- Service 1
- Sibe12 908_a 1
- Heat pump 2
- Indoor unit 2
- Inverter multi system with humidifying g series 2
- Outdoor unit 2
- Table of contents 2
- Control specification 9 3
- Function of thermistor 7 3
- Functions 3
- Introduction vi 3
- Main functions 4 3
- Part 1 list of functions 3
- Part 2 specifications 3
- Part 3 printed circuit board connector wiring diagram 3
- Part 4 function and control 3 3
- Printed circuit board connector wiring diagram 3
- Specifications 3
- Installation manual 5 4
- Part 5 installation operation manual 4 4
- Part 6 service diagnosis 01 4
- Service check function 03 4
- System configuration 9 3 operation manual 0 4
- Troubleshooting 07 4
- Check 68 5
- Indoor unit 82 5
- Outdoor unit 13 5
- Part 7 removal procedure 81 5
- Application of silicon grease to a power transistor and a diode bridge 59 6
- Jumper settings 58 6
- Part 8 others 54 6
- Part 9 appendix 60 6
- Piping diagrams 61 6
- Pump down operation 55 2 forced cooling operation mode 56 3 trial operation 57 6
- Wiring diagrams 63 6
- Cautions regarding safety of workers 7
- Introduction 7
- Safety cautions 7
- Warning 7
- Caution 8
- Warning 8
- Cautions regarding safety of users 9
- Warning 9
- Caution 10
- Warning 10
- Caution 11
- Icons are used to attract the attention of the reader to specific information the meaning of each icon is described in the table below 11
- Used icons 11
- Functions 12
- Part 1 list of functions 12
- Functions 13
- Holding functions no functions 13
- List of functions 2 13
- Sibe12 908_a functions 13
- Functions sibe12 908_a 14
- Holding functions no functions 14
- List of functions 14
- Part 2 specifications 15
- Specifications 15
- Hz 220 230 240v 16
- Indoor units 16
- Specifications 16
- Specifications sibe12 908_a 16
- Hz 220 230 240v 17
- Outdoor units 17
- Sibe12 908_a specifications 17
- Specifications 6 17
- Hz 220 230 240v 18
- Specifications 18
- Specifications sibe12 908_a 18
- Part 3 printed circuit board connector wiring diagram 19
- Printed circuit board connector wiring diagram 19
- Indoor units 20
- Printed circuit board connector wiring diagram 20
- Pcb 2 signal receiver pcb pcb 3 display pcb 21
- Pcb 4 intelligent eye sensor pcb 21
- Pcb detail pcb 1 control pcb 21
- Printed circuit board connector wiring diagram 10 21
- Sibe12 908_a printed circuit board connector wiring diagram 21
- Outdoor units 22
- Pcb detail pcb 1 control pcb 23
- Printed circuit board connector wiring diagram 12 23
- Sibe12 908_a printed circuit board connector wiring diagram 23
- Control specification 9 24
- Function of thermistor 7 24
- Main functions 4 24
- Part 4 function and control 24
- Additional control parameters 25
- Drawing of inverter the following drawing shows a schematic view of the inverter principle 25
- Forced cooling operation 25
- Frequency principle 25
- Frequency restrictions 25
- Initial settings 25
- 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 25
- 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 25
- Main functions 25
- The difference between the room temperature and the set temperature 25
- The load condition of the operating indoor unit 25
- The target frequency is adapted by additional parameters in the following cases 25
- 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 26
- Energy saving heating and cooling once the set temperature is reached the energy saving operation enables to maintain the room temperature at low power 26
- Even during extreme cold weather the high capacity is achieved it is maintained even when the outdoor air temperature is 2 c 26
- Forced cooling operation for more information refer to page 256 26
- Frequency limits the following table shows the functions that define the minimum and maximum frequency 26
- Inverter features the inverter provides the following features 26
- Quick heating and quick cooling the compressor rotational speed is increased when starting the heating or cooling this enables a quick set temperature 26
- The regulating capacity can be changed according to the changes in the outdoor air temperature and cooling heating load 26
- Cooling dry 27
- Function and control 16 27
- Heating 27
- Sibe12 908_a main functions 27
- The monitoring time has passed while the temperature difference is in the zone b cooling dry 10 minutes heating 10 seconds 27
- The operation turns on in any zones except a 27
- The system resumes from defrost control in any zones except a 27
- The temperature difference is above the zone c after being in the zone a 27
- The temperature difference is in the zone a 27
- Thermostat control 27
- Thermostat control is based on the difference between the room temperature and the set point 27
- Thermostat off condition 27
- Thermostat on condition 27
- Automatic operation 28
- Detail the microcomputer automatically sets the temperature and airflow rate the difference between the room thermistor temperature at start up and the target temperature 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 29
- Outline program dry operation removes humidity while preventing the room temperature from lowering since the microcomputer controls both the temperature and airflow rate the temperature adjustment and fan adjustment buttons are inoperable in this mode 29
- Program dry function 29
- Zone a thermostat off 29
- Zone b zone b 29
- Zone c thermostat on 29
- Airflow direction control 30
- Fan speed control for indoor units 31
- Features 32
- Function and control 32
- Humid heat operation 32
- Main functions sibe12 908_a 32
- Operation 32
- Refer to the operation manual for details 32
- Select heat mode 2 set humidity 32
- The room is uniformly humidified humidifier heating operation by air conditioner moisture gathers around the ceiling as it is lighter than the air even if the humidifier is operated the air on the floor is kept dry 32
- The world s first new humidifying method has adopted what is new in this method is to intake vapor in the outdoor air with the hygroscopic element mounted in outdoor unit and send to indoors this has enabled powerful and speedy humidification apart from other company s methods which just absorb moisture in the indoor air 32
- Airflow rate 34
- As for the performance estimate from psychrometric chart with the measured temperature and humidity of the outdoor air and of the humidified air in front of the indoor outlet using thermal hygrometer 34
- As humidifying operation starts concurrently with heating humidity rises gradually as shown in the figure below 34
- At humid heat operation as room temperature rises relative humidity is temporarily lowered this is because as room temperature rises relative humidity is lowered even if the moisture content is the same 34
- E g the rise in the room temperature from 15 c to 25 c results in the fall in humidity from 40 rh to about 22 rh 34
- Function and control 34
- How to check the motion of humidifying operation 34
- Humidity fluctuation by temperature settings 34
- Humidity fluctuation on humid heat operation 34
- Main functions sibe12 908_a 34
- Some room conditions floor space ventilation frequency number of residents etc and temperature settings mostly higher settings may result in unsatisfactory humidity settings 34
- You can check whether the humidifying unit is in good working order if you set humid heat test operation refer to the installation manual for details you can check even beyond the range of the conditions for humidifying operation 1 hygroscopic fan air is exhaled from the front exhaust outlet of outdoor unit 2 humidifying fan heater damper warm air is blown from the duct of outdoor unit 3 humidification rotor the rotor is rotating with top panel off 34
- A humidifying time approx 70min decide time according to the outdoor temperature and hose length set by remote controller 35
- Approx 1 minute after humid heat operation start up it repeats humidifying and drying alternately to protect condensation for inside the hose 35
- B drying time approx 2 10min decide time according to the hose length set by remote controller b drying time approx 2 10min 35
- Function and control 24 35
- Remark when a room is spacious such as loft style or partitioned by accordion style curtain the ventilation volume is large and may not sometimes reach the set humidity 35
- Sibe12 908_a main functions 35
- Time chart for humid heat operation on trial mode humid heat operation on trial mode works in the same sequence as humid heat operation but about 30 minutes later it automatically stops 35
- Time chart for humidifying operation control 35
- 3 4 5 6 7 8 9 10 11 12 13 14 15 36
- A b c d e f 36
- Applicable hose hose diameter a kpmh996a10s i d 5mm b kpmh996a15s i d 0mm 36
- Function and control 36
- Hose length m 36
- Hose length setting a 3 m b 3 4 m c 4 6 m d 6 8 m e 8 10 m f 10 m 36
- Humidification performance by outdoor temperature 36
- Humidifying capacity ratio piping length 4m nominal 36
- Main functions sibe12 908_a 36
- Outdoor temp 7 cdb 6 cwb 36
- Performance compensation by hose length 36
- The humidifying of this system is different from that of the normal humidifier therefore the humidifying performance varies with the outdoor temperature or installation condition sufficient humidifying capacity may not be attained depending on the weather condition in operation when the outdoor temperature lowers by 5 c the humidifying capacity is decreased by about 15 when the outdoor humidity lowers by 20 the humidifying capacity is decreased by about 20 36
- The max piping length is 15 m but the longer the length of the humidifying hose becomes the less the humidifying performance becomes 36
- Fresh air supply ventilation 37
- Air supply draft 38
- Exhaust ventilation 38
- Fresh air 38
- Supply ventilation 38
- Ventilation system the ventilation type is mainly divided into two the convenient system is supply ventilation 38
- 2 area intelligent eye 39
- A microcomputer in an indoor unit carries out a sampling every 20 milliseconds and if it detects 10 cycles of the wave in 1 second in total corresponding to 20 msec 10 200 msec and when the on signal continues for 3 seconds it judges that human is in the room as the motion signal is on 39
- Function and control 28 39
- Intelligent eye sensor is divided into 2 areas and detects humans in each area 39
- Processing 1 detection method by intelligent eye 39
- Sibe12 908_a main functions 39
- The following functions can be performed by a human motion sensor intelligent eye 1 reduces the capacity when there is no human in the room in order to save electricity energy saving operation 2 divides the room into plural areas and detects existence of humans in each area shifts the airflow direction to the area having no human automatically to avoid direct airflow on humans 39
- This sensor detects human motion by receiving infrared rays and displays the pulse wave output 39
- Airflow direction in 2 area intelligent eye operation 40
- Detection method the opposite area of detected area is set as the target direction 40
- Detection signal on in both area a and b shift the airflow direction to area b left side 2 detection signal on in area a shift the airflow direction to area b left side 3 detection signal on in area b shift the airflow direction to area a right side 4 detection signal off in both area a and b no change 40
- Function and control 40
- In case of fan mode the fan speed reduces by 60 rpm 40
- Main functions sibe12 908_a 40
- Others 40
- The dry operation can not command the setting temperature with a remote controller but internally the set temperature is shifted by 1 c 40
- The motions in energy saving operation for example in cooling 40
- When a microcomputer does not 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 40
- When the detection signal off in both area a and b the unit starts energy saving operation 40
- Details of the control when powerful button is pushed in each operation mode the fan speed and set temperature are converted to the following states in a period of 20 minutes 41
- Ex powerful operation in cooling mode 41
- Inverter powerful operation 41
- 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 41
- Econo mode 42
- Night set mode 43
- Hot start function 44
- Multi colored indicator lamp 44
- Other functions 44
- Signal receiving sign 44
- Weekly timer operation 44
- Air filter prefilter 45
- Auto restart function 45
- On off button on indoor unit 45
- Titanium apatite photocatalytic air purifying filter 45
- A forced operation mode the buzzer beeps and the timer and multi colored indicator lamp illuminate refer to page 256 for detail 46
- B easy diagnosis mode you can identify the error code in a quite simple way but some of the error codes do not appear on the lcd refer to the check method 1 on page 104 for detail 46
- Function and control 46
- Main functions sibe12 908_a 46
- Service check mode you can identify the error code for diagnosis refer to the check method 2 on page 105 for detail 46
- Table for special modes 46
- Function of thermistor 48
- Heat pump model 48
- Control specification 50
- Mode hierarchy 50
- Automatic switching for humid heat operation room 51
- Frequency control 52
- D signal 1 p control calculate a total of the 53
- D signal and is used for frequency command 53
- D signal the difference between a room temperature and the temperature set by the remote controller is taken as the 53
- D value in each sampling time 20 seconds and adjust the frequency according to its difference from the frequency previously calculated 53
- D value is large increase the frequency 53
- D value is small lower the frequency when the 53
- D value of each room and a total value of q 53
- D value when the 53
- For limiting lower limit frequency management is carried out only when the frequency rises 53
- Frequency management when other controls are functioning 53
- I control if the operating frequency is not change more than a certain fixed time adjust the frequency up and down according to the 53
- Indoor frequency command 53
- 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 53
- Pi control determine frequency up down by 53
- 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 airflow rate and other factors 53
- 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 53
- 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 operating 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 53
- Values depend on the type of indoor unit 53
- When each frequency is drooping frequency management is carried out only when the frequency droops 53
- 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 53
- 3 minute standby 54
- Controls at mode changing start up 54
- Four way valve operation compensation 54
- Four way valve switching 54
- Preheating operation 54
- Compressor protection function 55
- Detail 55
- Discharge pipe temperature control 55
- Outline the discharge pipe temperature is used as the internal temperature of the compressor if the discharge pipe temperature rises above a certain level the upper limit of frequency is set to keep this temperature from going up further 55
- When turning the compressor from off to on the upper limit of frequency is set as follows the function is not used when defrosting 55
- Freeze up protection control 56
- Input current control 56
- Fan control 57
- Heating peak cut control 57
- Conditions for canceling defrost the target heat exchanger temperature as the canceling condition is selected in the range of e c according to the outdoor temperature 58
- Defrost control 58
- Detail 58
- Detail conditions for starting defrost 58
- Liquid compression protection function 2 58
- More than 30 minutes of accumulated time pass since the start of the operation or ending the previous defrosting 58
- Operation stops depending on the outdoor air temperature compressor operation turns off under the conditions that the system is in cooling operation and outdoor air temperature is below 10 c 58
- Outline defrosting is carried out by the cooling cycle reverse cycle the defrosting time or outdoor heat exchanger temperature must be more than a certain value to finish 58
- Outline in order to obtain the dependability of the compressor the compressor must be stopped according to the conditions of the temperature of the outdoor air and outdoor heat exchanger 58
- The compressor operates for 6 minutes 58
- The starting conditions is determined with the outdoor temperature and the outdoor heat exchanger temperature 58
- The system is in heating operation 58
- Electronic expansion valve control 59
- Continue 60
- Control for abnormally high discharge pipe temperature 60
- Control of discharge pipe thermistor disconnection 60
- Control of target discharge pipe temperature 60
- Control specification sibe12 908_a 60
- Control when frequency changed 60
- Control when the operating room is changed 60
- Cooling 1 room operation 60
- Cooling 2 rooms operation 60
- Defrost control fd 1 60
- Detail the followings are the examples of control which function in each mode by the electronic expansion valve control 60
- Dew buildup prevention control for indoor rotor 60
- Fully closed when power is turned on 60
- Function 60
- Function and control 60
- Gas pipe isothermal control 60
- Heating 1 room operation 60
- Heating 2 rooms operation 60
- Indoor freeze prevention control 60
- Liquid pipe temperature control 60
- Not function 60
- Oil recovery control 60
- Open control when starting 60
- Operation pattern 60
- Pressure equalizing control 60
- Sc supercooling control 60
- When power is turned on 60
- Disconnection of the discharge pipe thermistor 61
- Fully closing with power on 61
- Gas pipe isothermal control during cooling 61
- Opening limit 61
- Pressure equalization control 61
- Sc supercooling control 61
- Starting operation changing operating room control 61
- Control when frequency is changed 62
- High discharge pipe temperature 62
- Oil recovery function 62
- Target discharge pipe temperature control 62
- Detection of overload and overcurrent 63
- Malfunctions 63
- Refrigerant shortage control 63
- Sensor malfunction detection 63
- Additional function 64
- Powerful operation mode 64
- Preventing indoor freezing 64
- Voltage detection function 64
- Installation manual 5 65
- Part 5 installation operation manual 65
- System configuration 9 3 operation manual 0 65
- Indoor unit installation drawings 66
- Indoor units 66
- Installation manual 66
- Intelligent eye sensor 66
- Caution 67
- Preparation before installation 67
- Removing and installing front grille 67
- Removing and installing front panel 67
- When there is no work space because the unit is close to ceiling 67
- How to set the different addresses 68
- Installation manual sibe12 908_a 68
- Installation operation manual 68
- Preparation before installation 68
- When connecting to an ha system wired remote controller central remote controller etc 68
- Caution 69
- Flaring the pipe end 69
- Installation operation manual 58 69
- Refrigerant piping work 69
- Sibe12 908_a installation manual 69
- Warning 69
- 1 caution on piping handling 70
- 2 selection of copper and heat insulation materials 70
- Caution 70
- Installation manual sibe12 908_a 70
- Installation operation manual 70
- Refrigerant piping 70
- Refrigerant piping work 70
- Boring a wall hole and installing wall embedded pipe 71
- Indoor unit installation 71
- Installation operation manual 60 71
- Installing the mounting plate 71
- Sibe12 908_a installation manual 71
- 1 connecting to the indoor unit 72
- Caution 72
- Humidifying hose installation work 72
- Indoor unit installation 72
- Installation manual sibe12 908_a 72
- Installation operation manual 72
- Inter unit wiring 72
- 1 right side right back or right bottom piping 73
- 2 left side left back or left bottom piping 73
- How to replace the drain plug and drain hose 73
- Installation operation manual 62 73
- Laying piping hoses and wiring 73
- Replacing onto the left side 73
- Right side piping right back piping right bottom piping 73
- Sibe12 908_a installation manual 73
- 3 wall embedded piping 74
- Indoor unit installation 74
- Installation manual sibe12 908_a 74
- Installation operation manual 74
- Left side piping left back piping left bottom piping 74
- Drain piping 75
- Install as described in the installation manual supplied with the multi outdoor unit 75
- Installation operation manual 64 75
- Sibe12 908_a installation manual 75
- Warning 75
- Wiring 75
- Caution 76
- Installation manual sibe12 908_a 76
- Installation operation manual 76
- Pipe set mode hose length check 76
- Pipe set mode hose length setting 76
- Setting the humidifying hose length 76
- When the unit cannot be powered on 76
- Hose dry operation for humidifying hose 77
- Installation operation manual 66 77
- Sibe12 908_a installation manual 77
- Test items 77
- Trial operation and testing 77
- Trial operation from remote controller 77
- Caution 78
- Outdoor unit installation drawings 78
- Outdoor units 78
- Precautions for humidifying hose installation work 78
- Connections connection port 79
- How to use reducers 79
- Installation 79
- Installation operation manual 68 79
- Precautions on installation 79
- Sibe12 908_a installation manual 79
- Installation manual sibe12 908_a 80
- Installation operation manual 80
- Outdoor unit installation guideline 80
- Selecting a location for installation of the indoor units 80
- Wall facing one side walls facing two sides 80
- Walls facing three sides 80
- Caution 81
- Drain work 81
- Installing outdoor unit 81
- Refrigerant piping 81
- Refrigerant piping work 81
- Purging air and checking gas leakage 82
- Refrigerant piping work 82
- Warning 82
- Caution 83
- Charging with refrigerant 83
- Important information regarding the refrigerant used 83
- Installation operation manual 72 83
- Refilling the refrigerant 83
- Sibe12 908_a installation manual 83
- Precautions for laying refrigerant piping 84
- Refrigerant piping work 84
- Warning 84
- Caution 85
- Connecting the humidifying hose 85
- Forced cooling operation 85
- Pump down operation 85
- Caution 86
- Connecting the humidifying hose 86
- Connecting to indoor unit 86
- Connecting to outdoor unit 87
- Installation operation manual 76 87
- Sibe12 908_a installation manual 87
- Caution 88
- Installation manual sibe12 908_a 88
- Installation operation manual 88
- Ok ok ng ng 88
- Warning 88
- Wiring 88
- Attention 89
- Installation operation manual 78 89
- Items to check 89
- Sibe12 908_a installation manual 89
- Test run and final check 89
- System configuration 90
- Indoor unit 91
- Name of parts 91
- Names of parts 91
- Operation manual 91
- Outdoor unit 91
- Installation operation manual 92
- Open the front cover 92
- Operation manual sibe12 908_a 92
- Remote controller 92
- Auto dry cool heat fan operation 93
- Press mode selector button and select a operation mode 93
- Press on off button 93
- Press on off button again 93
- Press temperature adjustment button 93
- To change the temperature setting 93
- To start operation 93
- To stop operation 93
- Installation operation manual 94
- Operation manual sibe12 908_a 94
- Press fan setting button 94
- To change the airflow rate setting 94
- Adjusting the airflow direction 95
- To adjust the flaps horizontal blades 95
- To adjust the louvers vertical blades 95
- Adjusting the 3 d airflow direction 96
- Comfort airflow operation 96
- Installation operation manual 96
- Operation manual sibe12 908_a 96
- Press either the swing button or the swing button 96
- Press the swing button and the swing button the and display will light up and the flap and louvers will move in turn 96
- To cancel 3 d airflow 96
- To start 3 d airflow 96
- Humid heat operation 97
- Press humidify ventilate button and select a humidity settings 97
- Press humidify ventilate button and select a off 97
- Press mode selector button and select a heat mode 97
- To cancel humid heat operation 97
- To start humid heat operation 97
- Example 1 the indoor units in both 2 rooms are in humid heat operation 98
- Example 2 the indoor units in the rooms are in humid heat operation and fresh air supply ventilation respectively 98
- Installation operation manual 98
- Notes on humid heat operation at multi system 98
- Operation manual sibe12 908_a 98
- Refer to the following application examples 98
- Fresh air supply ventilation 99
- Press humidify ventilate button and select a fresh air supply ventilation mode 99
- Press humidify ventilate button and select a off 99
- To cancel fresh air supply ventilation 99
- To start fresh air supply ventilation 99
- Comfort airflow and intelligent eye operation 100
- Press comfort sensor button 100
- Press comfort sensor button and select an operation mode 100
- To cancel operation 100
- To start operation 100
- Area 1 area 2 101
- Area 1 area 2 area 1 area 2 101
- Caution 101
- Comfort airflow and intelligent eye operation 101
- Energy saving operation 101
- Installation operation manual 90 101
- Intelligent eye is useful for energy saving 101
- Notes on intelligent eye operation 101
- Sibe12 908_a operation manual 101
- To combine comfort airflow operation and intelligent eye operation 101
- Powerful and outdoor unit quiet operation 102
- Press powerful and quiet button 102
- Press powerful and quiet button and select an operation mode 102
- To cancel operation 102
- To start operation 102
- Econo operation 103
- Press econo button 103
- Press econo button again 103
- To cancel econo operation 103
- To start econo operation 103
- Press cancel button 104
- Press off timer button 104
- Press off timer button again 104
- Press select button until the time setting reaches the point you like 104
- Timer operation 104
- To cancel the off timer operation 104
- To use off timer operation 104
- Attention 105
- Press cancel button 105
- Press on timer button 105
- Press on timer button again 105
- Press select button until the time setting reaches the point you like 105
- Timer operation 105
- To cancel on timer operation 105
- To combine on timer and off timer 105
- To use on timer operation 105
- C 27 c 106
- C 27 c 27 c 106
- Using in these cases of weekly timer 106
- Weekly timer operation 106
- Press next button 107
- Press program button 107
- Press select button to select the desired day of the week and reservation number 107
- Press select button to select the desired mode 107
- Press select button to select the desired time 107
- Setting mode 107
- To use weekly timer operation 107
- Weekly timer operation 107
- Installation operation manual 108
- Operation manual sibe12 908_a 108
- Press next button 108
- Press program button to complete the setting 108
- Press select button to select the desired temperature 108
- C 27 c 109
- Copy mode 109
- Installation operation manual 98 109
- Monday 109
- Press program button 109
- Press program button to complete the setting 109
- Press select button to confirm the day of the week to be copied 3 press copy button 109
- Press select button to select the destination day of the week 5 press copy button 109
- Sibe12 908_a operation manual 109
- Tuesday to friday 109
- Weekly timer operation 109
- All reservations 110
- Confirming a reservation 110
- Hold the weekly button for 5 seconds 110
- Installation operation manual 110
- Operation manual sibe12 908_a 110
- Press program button 110
- Press select button to select the day of the week and the reservation number to be confirmed 110
- Press select button to select the day of the week to be deleted 110
- Press weekly button while is displayed on the lcd 110
- The individual reservation 110
- The reservations for each day of the week 110
- To deactivate weekly timer operation 110
- To delete reservations 110
- Humid heat operation fresh air supply ventilation 111
- Note for multi system 111
- Selecting the operation mode 111
- What is a multi system 111
- When the indoor unit in the first selected room is in fresh air supply ventilation and the indoor unit in the second selected room is in humid heat operation 111
- When the indoor unit in the first selected room is in humid heat operation and the indoor unit in the second selected room is in fresh air supply ventilation 111
- When the indoor units in both 2 rooms are set to fresh air supply ventilation 111
- When the indoor units in both 2 rooms are set to humid heat operation 111
- With the priority room setting present but inactive or not present 111
- Part 6 service diagnosis 112
- Service check function 03 112
- Troubleshooting 07 112
- Check 68 113
- Failure diagnosis by led indication 114
- Failure diagnosis with multi colored indicator lamp 114
- Service check function 114
- Check method 1 1 when the timer cancel button is held down for 5 seconds 115
- Failure diagnosis by remote controller 115
- Indication flashes on the temperature display section 115
- 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 115
- Open the front cover 115
- Press the timer cancel button repeatedly until a continuous beep is produced 115
- The code indication changes in the sequence shown below and notifies with a long beep 115
- Timer cancel button 115
- Error code indication by remote controller 118
- Troubleshooting 118
- Air conditioner does not run 120
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 121
- Service diagnosis 110 121
- Sibe12 908_a troubleshooting 121
- Troubleshooting 121
- Service diagnosis 122
- Troubleshooting sibe12 908_a 122
- Air conditioner runs but does not cool heat 123
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 124
- Check no 2 refer to p 69 124
- Service diagnosis 124
- Troubleshooting 124
- Troubleshooting sibe12 908_a 124
- Warning when an air conditioner does not cool or heat the room refrigerant leak is considered to be one of the reasons make sure that there is no refrigerant leakage or breaks due to over tightened flare part though the refrigerant used in an air conditioner is itself harmless but it can generate toxic gases when it leaks into room and contacts flames such as fan and other heaters stoves and ranges in case of leakage ventilate the room immediately 124
- When operation starts safety breaker works 125
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 126
- Check no 9 refer to p 79 126
- Service diagnosis 126
- Troubleshooting 126
- Troubleshooting sibe12 908_a 126
- Air conditioner makes big noise and vibration 127
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 127
- Deformation of the unit 127
- Improper quantity of refrigerant 127
- Insufficient vibration prevention measures 127
- Malfunction decision conditions 127
- Method of malfunction detection 127
- Mounting wall is too thin 127
- Piping length is too short 127
- Service diagnosis 116 127
- Sibe12 908_a troubleshooting 127
- Supposed causes 127
- Troubleshooting 127
- Air is not humidified enough 128
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 129
- Service diagnosis 118 129
- Sibe12 908_a troubleshooting 129
- Troubleshooting 129
- Note refer to p 40 for the priority room setting 130
- Service diagnosis 130
- Troubleshooting sibe12 908_a 130
- Indoor unit pcb abnormality 131
- Freeze up protection control or heating peak cut control 132
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 133
- Check no 2 refer to p 69 133
- Service diagnosis 122 133
- Sibe12 908_a troubleshooting 133
- Troubleshooting 133
- Fan motor dc motor or related abnormality 134
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 135
- Check no 1 refer to p 68 135
- Service diagnosis 124 135
- Sibe12 908_a troubleshooting 135
- Troubleshooting 135
- Thermistor or related abnormality indoor unit 136
- Humidity sensor abnormality 137
- Signal transmission error indoor unit outdoor unit 138
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 139
- Service diagnosis 128 139
- Sibe12 908_a troubleshooting 139
- Troubleshooting 139
- Incompatible power supply between indoor unit and outdoor unit 140
- Incomplete setting for hose length 141
- A wrong connection is detected by checking the combination of indoor and outdoor units on the microcomputer 142
- Freeze up protection in other rooms unspecified voltage between indoor and outdoor units 142
- Malfunction decision conditions 142
- Method of malfunction detection 142
- Operation halt due to the freeze up protection in other rooms 142
- Operation halt due to unspecified voltage between indoor and outdoor units 142
- Pcb wrongly connected 142
- Remote controller display 142
- Supposed causes 142
- Troubleshooting 142
- Wrong connections at the indoor unit 142
- Outdoor unit pcb abnormality 143
- A compressor overload is detected through compressor ol 144
- Check no 1 refer to p 80 144
- Check no 2 refer to p 69 144
- Check no 2 refer to p 72 144
- Check no 7 refer to p 76 144
- Electronic expansion valve defective 144
- Four way valve malfunctioning 144
- If the compressor ol is activated twice the system is shut down 144
- Malfunction decision conditions 144
- Method of malfunction detection 144
- Ol activation compressor overload 144
- Outdoor unit pcb defective 144
- Refrigerant shortage 144
- Remote controller display 144
- Stop valve defective 144
- Supposed causes 144
- The error counter resets itself if this or any other error does not occur during the following 60 minute compressor running time total time 144
- The operating temperature condition is not specified 144
- Troubleshooting 144
- Water mixed in the local piping 144
- Check no 4 refer to p 73 145
- Clear condition continuous operation for 11 minutes without fault 145
- Compressor lock 145
- Disconnection of compressor harness 145
- Judging from current waveform generated when high frequency voltage is applied to the compressor 145
- Malfunction decision conditions 145
- Method of malfunction detection 145
- Remote controller display 145
- Supposed causes 145
- The system is shut down when the fault count reaches 16 times 145
- Troubleshooting 145
- Check no 3 refer to p 77 146
- Clear condition the fan continuously rotates for 11 minutes without fault 146
- Dc fan lock 146
- Disconnection or improper connection of harness connector between fan motor and pcb 146
- Failure in fan motor 146
- Identify the fan motor system fault based on fan speed detected by hall ic during high pressure fan motor running 146
- Malfunction decision conditions 146
- Method of malfunction detection 146
- Remote controller display 146
- Shut down when the error repeats 16 times 146
- Supposed causes 146
- The fan does not rotate because it gets caught in foreign matter 146
- Troubleshooting 146
- When the fan motor is running the fan does not rotate for 150 seconds or more 146
- Input overcurrent detection 147
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 148
- Check no 1 refer to p 71 148
- Check no 3 refer to p 70 148
- Check no 4 refer to p 73 148
- Check no 6 refer to p 75 148
- Input over current may be caused by improper wiring inside the unit if the unit stops due to input over current after connecting or disconnecting wires to replace part check wiring for proper connection 148
- Service diagnosis 148
- Troubleshooting 148
- Troubleshooting sibe12 908_a 148
- Discharge pipe temperature control 149
- High pressure control in cooling 150
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 151
- Check no 2 refer to p 69 151
- Check no 3 refer to p 70 151
- Check no 5 refer to p 70 151
- Check no 6 refer to p 75 151
- Check no 7 refer to p 76 151
- Service diagnosis 140 151
- Sibe12 908_a troubleshooting 151
- Troubleshooting 151
- Compressor sensor system abnormality 152
- Damper abnormality 153
- Defective motor for damper 153
- Detected by the limit switch ls in the humidifier unit 153
- Faulty damper operation due to foreign material 153
- Faulty damper operation due to frost 153
- Limit switch does not turn on or off when the operation of humidifier unit starts or finishes for example when turning on the power supply when humidification operation including air supply ventilation starts 153
- Limit switch fault including improper connection 153
- Malfunction decision conditions 153
- Method of malfunction detection 153
- Remote controller display 153
- Supposed causes 153
- Troubleshooting 153
- Position sensor abnormality 154
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 155
- Check no 4 refer to p 73 155
- Check no 6 refer to p 75 155
- Check no 9 refer to p 79 155
- Service diagnosis 144 155
- Sibe12 908_a troubleshooting 155
- Troubleshooting 155
- Dc voltage dc current sensor abnormality 156
- Thermistor or related abnormality outdoor unit 157
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 158
- Check no 2 refer to p 69 158
- Discharge pipe thermistor 158
- Gas pipe thermistor 158
- Liquid pipe thermistor 158
- Outdoor air thermistor 158
- Outdoor heat exchanger thermistor 158
- Radiation fin thermistor 158
- Service diagnosis 158
- Troubleshooting 158
- Troubleshooting sibe12 908_a 158
- Abnormal temperature in electrical box 159
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 160
- Check no 2 refer to p 69 160
- Check no 3 refer to p 70 160
- Check no 5 refer to p 70 160
- Note on resetting power supply 160
- Service diagnosis 160
- To reset the unit power off status need to continue at least 30 seconds 160
- Troubleshooting 160
- Troubleshooting sibe12 908_a 160
- Temperature rise in radiation fin 161
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 162
- Check no 2 refer to p 69 162
- Check no 3 refer to p 70 162
- Check no 5 refer to p 70 162
- Note refer to application of silicon grease to a power transistor and a diode bridge on p 259 162
- Service diagnosis 162
- Troubleshooting 162
- Troubleshooting sibe12 908_a 162
- Output overcurrent 163
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 164
- Check no 3 refer to p 70 164
- Check no 4 refer to p 73 164
- Check no 5 refer to p 75 164
- Check no 6 refer to p 75 164
- Service diagnosis 164
- Troubleshooting 164
- Troubleshooting sibe12 908_a 164
- Refrigerant shortage 165
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 166
- Check no 2 refer to p 69 166
- Check no 7 refer to p 76 166
- Service diagnosis 166
- Troubleshooting 166
- Troubleshooting sibe12 908_a 166
- Abnormal supply voltage momentary power failure 167
- Defective over voltage detector or defective dc voltage detection circuit 167
- Detect an abnormal increase or drop of voltage by the over voltage detection circuit or dc voltage detection circuit 167
- Failure in pam controlled parts 167
- Fault counter is reset when the unit continuously runs for 11 minutes without fault 167
- Malfunction decision conditions 167
- Method of malfunction detection 167
- Over voltage protection low voltage protection 167
- Remote controller display 167
- Short circuit inside the fan motor winding 167
- Supposed causes 167
- The unit shuts down if the fault conditions occurs repeatedly 167
- Troubleshooting 167
- When an over voltage signal is sent to the microcomputer from the over voltage detection circuit or the voltage detected by dc voltage detection circuit is less than 150 v and that voltage continues for about 0 second 167
- Outdoor unit pcb abnormality or communication circuit abnormality 168
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 169
- Service diagnosis 158 169
- Sibe12 908_a troubleshooting 169
- Troubleshooting 169
- Check no 8 refer to p 71 170
- Service diagnosis 170
- Troubleshooting sibe12 908_a 170
- Signal transmission error on outdoor unit pcb 171
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 172
- Service diagnosis 172
- Troubleshooting 172
- Troubleshooting sibe12 908_a 172
- Fan motor system abnormality fan lock 173
- Heater wire abnormality 174
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 175
- Check no 2 refer to p 69 175
- Service diagnosis 164 175
- Sibe12 908_a troubleshooting 175
- Troubleshooting 175
- Humidifying fan outlet thermistor abnormality heater temperature abnormality 176
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 177
- Check no 2 refer to p 69 177
- Check no 5 refer to p 70 177
- Service diagnosis 166 177
- Sibe12 908_a troubleshooting 177
- Troubleshooting 177
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 178
- Lights out of microcomputer status lamp 178
- Malfunction decision conditions 178
- Method of malfunction detection 178
- Outdoor unit pcb is not power supplied 178
- Power supply failure due to noise 178
- Remote controller display no display 178
- Service diagnosis 178
- Supposed causes 178
- Troubleshooting 178
- Troubleshooting sibe12 908_a 178
- When a microcomputer fault is detected led a turns off 178
- Check no 1 1 check the connection of connector 2 check motor power supply voltage output pins 4 7 3 check motor control voltage pins 4 3 4 check rotation command voltage output pins 4 2 5 check rotation pulse input pins 4 1 179
- Fan motor connector output check 179
- Service diagnosis 168 179
- Sibe12 908_a check 179
- Check no 2 disconnect the connectors of the thermistors from 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 180
- For the models in which the thermistor is directly mounted on the pcb disconnect the connector for the pcb and measure 180
- Thermistor resistance check 180
- Check no 3 181
- Check no 3 refer to p 77 181
- Check no 5 181
- Installation condition check 181
- Outdoor fan system check dc motor 181
- Service diagnosis 170 181
- Sibe12 908_a check 181
- Main circuit electrolytic capacitor check 182
- Power supply waveform check 182
- Check no 2 183
- Refrigerant system check 183
- Service diagnosis 172 183
- Sibe12 908_a check 183
- Inverter checker check 184
- Check no 5 186
- Check no 6 186
- Discharge pressure check 186
- Do not touch the live parts within 10 minutes after the breaker is turned off 186
- Even after that when you touch the parts check to see that supply voltage of the power transistor is less than 50 v with a tester 186
- Measure resistance at connector terminal on pcb or at the relay connector 186
- Power transistor check 186
- Electronic expansion valve check 187
- Check sibe12 908_a 188
- Fu1 sw power supply hygroscopic fan motor 188
- Fu2 outdoor fan motor humidifying fan motor four way valve 188
- Fuses are commonly used as follows refer to the corresponding wiring diagram 188
- Humidifying fan motor make sure that the voltage of 270 30 v is applied 1 set operation off and power off remove the connector s72 2 check that the voltage between the pins 5 8 is 270 vdc 3 check that the control voltage between the pins 4 5 is 15 vdc 4 check that the rotation command voltage between the pins 3 5 is 5 vdc 5 keep operation off and power off connect the connector s72 6 check whether 2 pulses 0 15 v are output at the pins 2 5 when the fan motor is rotated 1 turn by hand 188
- Outdoor fan motor make sure that the voltage of 270 30 v is applied 1 set operation off and power off remove the connector s70 2 check that the voltage between the pins 4 7 is 270 vdc 3 check that the control voltage between the pins 3 4 is 15 vdc 4 check that the rotation command voltage between the pins 2 4 is 5 vdc 5 keep operation off and power off connect the connector s70 6 check whether 2 pulses 0 15 v are output at the pins 1 4 when the fan motor is rotated 1 turn by hand 188
- Rotating pulse input on outdoor unit pcb check 188
- Service diagnosis 188
- When the fu2 is melted check the outdoor fan motor for proper function 188
- Main circuit short check 190
- Check no 1 191
- Four way valve performance check 191
- Service diagnosis 180 191
- Sibe12 908_a check 191
- Indoor unit 82 192
- Outdoor unit 13 192
- Part 7 removal procedure 192
- Indoor unit 193
- Removal of air filter 193
- Removal of front panel 196
- Removal of front grille 198
- Put your fingers into the front grille and lift the grille up to unfasten the center hook 199
- Put your fingers into the front grille and lift the grille up to unfasten the left hook 199
- Release the 3 hooks at the top 199
- Removal of horizontal blades and vertical blades 201
- Removal of electrical box 205
- Removal of pcb 208
- Removal of the connecting duct 213
- Removal of heat exchanger 214
- Removal of swing motor 217
- Connector green 219
- Disconnect the connector 219
- Remove the 2 screws 219
- Remove the swing motor for vertical blade 219
- Removal of fan rotor 221
- Dislocate the fan rotor by sliding it to the right 222
- Remove the 2 screws of the fan motor fixing plate 222
- Removing the fan rotor 222
- Unfasten the hook of the fan motor fixing plate and remove 222
- Outdoor unit 224
- Removal of humidifier unit 224
- Removal of heater assy humidifying rotor moisture adsorption element humidifying rotor motor 227
- Removal of damper motor 231
- Remove the 2 screws 232
- Remove the damper motor 232
- Step procedure points 232
- Removal of limit switch humidifying thermistor 233
- Removal of the fan valve duct assy 236
- Removal of hygroscopic fan rotor hygroscopic fan motor 238
- Removal of panels and plates 239
- When reassembling the stop valve cover make sure to fit the 4 hooks 241
- Removal of electrical box 242
- Lift up the electrical box to remove 246
- Remove the grounding screws of earth wires 246
- Remove the screw in front of the electrical box 246
- Remove the screw on the right side of the electrical box 246
- Removal of pcb 247
- Release the outdoor air thermistor from the hook 248
- Remove the 2 screws and detach the 1 clip to remove the radiation shield plate 248
- Remove the 2 screws of the terminal boards 248
- Cut off the clamps at 2 locations and disconnect the wire harnesses 249
- The clip is push mount type 249
- Lift up the control pcb to remove 251
- Removal of sound blanket 253
- Open the sound blanket inside sleeve and pull it out 255
- Pull out the sound blanket bottom 255
- Removal of the propeller fan fan motor 256
- Removal of thermistors 259
- Removal of compressor 261
- Removal of the four way valve electronic expansion valve 263
- Application of silicon grease to a power transistor and a diode bridge 59 265
- Jumper settings 58 265
- Part 8 others 265
- Pump down operation 55 2 forced cooling operation mode 56 3 trial operation 57 265
- Pump down operation 266
- Detail 267
- Forced cooling operation mode 267
- Outline forced operation mode includes only forced cooling 267
- Trial operation 268
- Trial operation and testing 268
- Trial operation from remote controller 268
- Control pcb of the indoor unit 1 remove the shield plate of the electrical box refer to the removal procedure on page 194 2 cut the address jumper ja on the control pcb 269
- For the location of the jumper and the switch refer to page 10 for detail 269
- How to set the different address 269
- Jumper setting 269
- Jumper settings 269
- When 2 indoor units are installed in 1 room one of the 2 wireless remote controllers can be set for different address 269
- When 2 units are installed in 1 room 269
- Wireless remote controller 1 slide the front cover and take it off 2 cut the address jumper j4 269
- Application of silicon grease to a power transistor and a diode bridge 270
- Part 9 appendix 271
- Piping diagrams 61 271
- Wiring diagrams 63 271
- Appendix 272
- Ctxu25 35 42g2v1b ctxu50g2v1b 272
- Indoor units 272
- Piping diagrams 272
- Piping diagrams sibe12 908_a 272
- Appendix 262 273
- Mxu40gv1b 273
- Mxu50gv1b 273
- Outdoor units 273
- Sibe12 908_a piping diagrams 273
- Appendix 274
- Ctxu25 35 42 50g2v1b 274
- Indoor units 274
- Wiring diagrams 274
- Wiring diagrams sibe12 908_a 274
- Appendix 264 275
- Mxu40gv1b 275
- Mxu50gv1b 275
- Outdoor units 275
- Sibe12 908_a wiring diagrams 275
- Air conditioners should not be installed in areas where corrosive gases such as acid gas or alkaline gas are produced 2 if the outdoor unit is to be installed close to the sea shore direct exposure to the sea breeze should be avoided if you need to install the outdoor unit close to the sea shore contact your local distributor 276
- Ask a qualified installer or contractor to install this product do not try to install the product yourself improper installation can result in water or refrigerant leakage electrical shock fire or explosion 276
- Cautions on product corrosion 276
- Daikin industries ltd s products are manufactured for export to numerous countries throughout the world daikin industries ltd does not have control over which products are exported to and used in a particular country prior to purchase please therefore confirm with your local authorised importer distributor and or retailer whether this product conforms to the applicable standards and is suitable for use in the region where the product will be used this statement does not purport to exclude restrict or modify the application of any local legislation 276
- Dealer 276
- Http www daikin com global_ac 276
- If you have any enquiries please contact your local importer distributor and or retailer 276
- Read the user s manual carefully before using this product the user s manual provides important safety instructions and warnings be sure to follow these instructions and warnings 276
- Sibe12 908_a printed in japan 01 2011 b ak 276
- Use only those parts and accessories supplied or specified by daikin ask a qualified installer or contractor to install those parts and accessories use of unauthorised parts and accessories or improper installation of parts and accessories can result in water or refrigerant leakage electrical shock fire or explosion 276
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