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Daikin ATXS25BVMB [114/186] Four way valve abnormality
![Daikin ATXS25BVMB [114/186] Four way valve abnormality](/views2/1780815/page114/bg72.png)
SiBE12-314 Troubleshooting
Service Diagnosis 105
4.11 Four Way Valve Abnormality
Remote
Controller
Display
EA
Method of
Malfunction
Detection
The liquid pipe temperature thermistor, the outdoor air temperature thermistor and the outdoor
unit heat exchanger thermistor are checked to see if they function within their normal ranges in
the operating mode.
Malfunction
Decision
Conditions
A following condition occurs after 3 minutes of the compressor start.
Cooling / dry operation
(outdoor unit heat exchanger temp. – liquid pipe temp.) < –5°C
Heating
(liquid pipe temp. – outdoor unit heat exchanger temp.) < 0°C
Supposed
Causes
Connector in poor contact
Thermistor defective
Outdoor unit PCB defective
Four way valve coil or harness defective
Four way valve defective
Foreign substance mixed in refrigerant
Insufficient gas
Содержание
- B series 1
- Inverter multi for 2 rooms 1
- Manual 1
- Service 1
- Service manual inverter multi for 2 rooms b series sibe12 314 1
- Cooling only outdoor unit indoor unit 2
- Heat pump outdoor unit indoor unit 2
- Inverter multi for 2 rooms inverter multi for 2 rooms inverter multi for 2 rooms inverter multi for 2 rooms b series b series b series b series 2
- Connector wiring diagram 7 3
- Control specification 2 3
- Cooling only 0 3
- Cooling only 2 heat pump 3
- Function of main structural parts 8 3
- Heat pump 3 3
- Introduction v 3
- Main functions 6 3
- Part 1 list of functions 3
- Part 2 specifications 3
- Part 3 printed circuit board 3
- Part 4 function and control 5 3
- Printed circuit board connector wiring diagram 8 3
- Table of contents 3
- Caution for diagnosis 8 2 problem symptoms and measures 0 3 service check function 1 4 troubleshooting 2 4
- Part 5 system configuration 7 4
- Part 6 service diagnosis 7 4
- System configuration 8 2 instruction in case of ftk x s 25 35 bvmb 9 4
- Check 26 5
- Drawings flow charts v 5
- Index i 5
- Others 60 5
- Outdoor unit 36 5
- Part 7 removal procedure 35 5
- Part 8 others 59 5
- Part 9 appendix 63 5
- Piping diagrams 64 5
- Wiring diagrams 67 5
- Caution in repair 6
- Introduction 6
- Safety cautions 6
- Warning 6
- Caution 7
- Cautions regarding products after repair 7
- Warning 7
- Caution 8
- Inspection after repair 8
- Warning 8
- Caution 9
- Icons are used to attract the attention of the reader to specific information the meaning of each icon is described in the table below 9
- Using icons 9
- Using icons list 9
- Warning 9
- Part 1 list of functions 10
- Cooling only 11
- Holding functions 11
- Holding functions 12
- Holding functions 13
- Heat pump 14
- Holding functions 14
- Holding functions 15
- Holding functions 16
- Part 2 specifications 18
- Cooling only 19
- Cooling only sibe12 314 19
- Indoor units 19
- Specifications 19
- Wall mounted type 230v 50hz 19
- Duct connected type 230v 50hz 20
- Floor ceiling suspended dual type 230v 50hz 20
- Sibe12 314 cooling only 20
- Specifications 11 20
- 1 5 3 0 1 0 4 0 1215 400 1490 5 2 6 94 21
- 2 0 1 0 3 0 755 340 1020 3 1 4 94 21
- 2 5 3 0 1 0 4 0 1215 400 1490 5 2 6 94 21
- 3 5 1 0 3 0 1120 340 1440 5 1 6 95 21
- Combination capacity cooling 230v 21
- Combination of indoor unit each capacity kw total capacity kw total input w total current a power factor a room b room rating min max rating min max rating min max rating 2 21
- Cooling only sibe12 314 21
- Outdoor units 21
- Specifications 21
- V 50hz 21
- Heat pump 22
- Indoor units 22
- Sibe12 314 heat pump 22
- Specifications 13 22
- Wall mounted type 230v 50hz 22
- Duct connected type 230v 50hz 23
- Floor ceiling suspended dual type 230v 50hz 23
- Heat pump sibe12 314 23
- Specifications 23
- Combination capacity cooling 230v 24
- Combination of indoor unit each capacity kw total capacity kw total input w total current a power factor a room b room rating min max rating min max rating min max rating 2 2 0 2 0 1 0 3 0 755 340 1020 3 1 4 94 3 3 5 3 5 1 0 3 0 1120 340 1440 5 1 6 95 2 2 1 5 1 5 3 0 1 0 4 0 1215 400 1490 5 2 6 94 2 3 1 5 2 5 3 0 1 0 4 0 1215 400 1490 5 2 6 94 24
- Outdoor units 24
- Sibe12 314 heat pump 24
- Silent mode 24
- Sound pressure 24
- Specifications 15 24
- V 50hz 24
- Heating 230v 25
- Part 3 printed circuit board connector wiring diagram 26
- Printed circuit board connector wiring diagram 27
- Wall mounted type 27
- Detail of pcb 28
- Printed circuit board connector wiring diagram 19 28
- Sibe12 314 printed circuit board connector wiring diagram 28
- Duct connected type 29
- Floor ceiling suspended dual type 30
- Outdoor unit 32
- Control pcb pcb 2 detail 33
- Control specification 2 34
- Function of main structural parts 8 34
- Main functions 6 34
- Part 4 function and control 34
- Part 4 part 4 part 4 part 4 function and control function and control function and control function and control 34
- Additional control parameters 35
- Drawing of inverter the following drawing shows a schematic view of the inverter principle 35
- Forced cooling operation 35
- Frequency principle 35
- Frequency restrictions 35
- Initial settings 35
- 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 35
- 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 35
- Main functions 35
- Note see the list of functions for the functions applicable to different models 35
- The difference between the room temperature and the set temperature 35
- The load condition of the operating indoor unit 35
- The target frequency is adapted by additional parameters in the following cases 35
- 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 36
- Energy saving heating and cooling once the set temperature is reached the energy saving operation enables to maintain the room temperature at low power 36
- Even during extreme cold weather the high capacity is achieved it is maintained even when the outdoor air temperature is 2 c 36
- Forced cooling operation for more information refer to forced operation mode on page 36
- Frequency limits the following table shows the functions that define the minimum and maximum frequency 36
- Inverter features the inverter provides the following features 36
- Quick heating and quick cooling the compressor rotational speed is increased when starting the heating or cooling this enables a quick set temperature 36
- The regulating capacity can be changed according to the changes in the outdoor air temperature and cooling heating load 36
- Power airflow dual flaps wide angle louvers and auto swing 37
- 35 kw class 500 860 rpm during powerful operation 850 910 rpm 38
- Automatic air flow control for cooling 38
- Automatic air flow control for heating 38
- 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 38
- Fan speed control for indoor units 38
- For more information about hall ic refer to trouble shooting for fan motor on page 38
- Function and control 29 38
- H hh powerful 38
- Ll cooling thermostat off sl silent 38
- Note 1 during powerful operation fan operate h tap 50 90 rpm 2 fan stops during defrost operation 38
- Phase steps phase control and fan speed control contains 9 steps lll ll sl l ml m mh h and hh 38
- Sibe12 314 main functions 38
- Step cooling heating dry mode lll heating thermostat off 38
- The following drawing explains the principle for fan speed control for heating 38
- The following drawing explains the principle of fan speed control for cooling 38
- Within this range the airflow rate is automatically controlled when the airflow adjusting button is set to automatic 38
- 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 39
- Programme dry function 39
- 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 39
- Automatic operation 40
- Night set mode 41
- 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 42
- Function and control 33 42
- In case of fan mode the fan speed reduces by 50 rpm 42
- Intelligent eye 42
- Processing 1 detection method by intelligent eye 42
- Sibe12 314 main functions 42
- The motions for example in cooling 42
- 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 42
- This sensor detects human motion by receiving infrared rays and displays the pulse wave output 42
- When a microcomputer doesn t have a signal from the sensor in 20 minutes it judges that nobody is in the room and operating the unit in temperature sifted 2 c from the set temperature cooling 2 c higher dry 1 c higher and auto according to the operation mode at that time 42
- Home leave operation 44
- 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 twenty minutes 45
- Ex powerful operation in cooling mode 45
- Inverter powerful operation 45
- 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 45
- Tpf 20min 45
- Air purifying filter 46
- Auto restart function 46
- Hot start function 46
- Mold proof air filter 46
- On off button on indoor unit 46
- Other functions 46
- Photocatalytic deodorizing filter 46
- Self diagnosis digital display 46
- Signal receiving sign 46
- Cooling only model 47
- Function and control 47
- Function of main structural parts 47
- Function of main structural parts sibe12 314 47
- Heat pump model 47
- Main structural parts 47
- Function of thermistor 48
- Heat pump model 48
- Cooling only model 50
- Control specification 51
- Detail 1 for heat pump model there are following modes stop cooling includes drying heating include defrosting 51
- For cooling only model there are following models stop and cooling including drying 51
- For the rooms set with different mode select stand by mode operation lamp flashes 51
- Mode hierarchy 51
- Note unless specified otherwise an indoor dry operation command must be regarded as cooling operation 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 51
- 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 51
- The system will follow the mode determined first first push first set 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 will be 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 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 53
- 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 53
- D value is small lower the frequency when the 53
- D value obtaining the fixed 53
- D value of each room and a total value of q 53
- D value when the 53
- Determine upper limit frequency 53
- 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 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
- Frequency initial setting 53
- Indoor frequency command 53
- Outline 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
- 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 air flow rate and other factors 53
- Set a maximum value as an lower limit frequency among the frequency lower limits of the following functions pressure difference upkeep 4 determine prohibited frequency 53
- 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 prevention dew prevention fin thermistor temperature 3 determine lower limit frequency 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
- There is a certain prohibited frequency such as a power supply frequency 53
- When each frequency is drooping frequency management is carried out only when the frequency droops 53
- 3 minutes stand by 54
- Compressor protection function 54
- Controls at mode changing start up 54
- Four way valve operation compensation 54
- Four way valve switching 54
- Preheating operation 54
- Discharge pipe control 55
- Input current control 55
- Freeze up protection control 56
- Heating peak cut control 56
- Fan control 57
- Moisture protection function 2 57
- Defrost control 58
- Detail conditions for starting defrost the starting conditions must be made with the outdoor air temperature and heat exchanger temperature under the conditions that the system is in heating operation 6 minutes after the compressor is started and more than 30 minutes of accumulated fine pass since the start of the operation or ending the defrosting conditions for canceling defrost the judgment must be made with heat exchanger temperature 4 c 12 c 58
- Function and control 49 58
- Outline heat pump only defrosting is carried out by the cooling cycle reverse cycle the defrosting time or outdoor heat exchanger temperature must be more than its fixed value when finishing 58
- Sibe12 314 control specification 58
- Electronic expansion valve control 59
- Detail the followings are the examples of control which function in each mode by the electronic expansion valve control 60
- Function and control 51 60
- Sibe12 314 control specification 60
- Disconnection of the discharge pipe thermistor 61
- Fully closing with power on 61
- Gas pipe isothermal control during cooling 61
- High temperature of the discharge pipe 61
- Oil recovery function 61
- Opening limit 61
- Pressure equalization control 61
- Starting operation changing operating room control 61
- Control when frequency is changed 62
- Sc control 62
- Target discharge pipe temperature control 62
- Detection of overload and over current 63
- Insufficient gas control 63
- Malfunctions 63
- Sensor malfunction detection 63
- Additional function 64
- Compressor operating frequency and outdoor unit airflow rate are increased 64
- Detail forced cooling 64
- 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 64
- Forced operation mode 64
- Outline forced operating mode includes only forced cooling 64
- Power supply voltage is detected each time equipment operation starts 64
- Powerful operation mode 64
- Preventing indoor freezing 64
- Voltage detection function 64
- Part 5 part 5 part 5 part 5 system configuration system configuration system configuration system configuration 66
- Part 5 system configuration 66
- System configuration 8 2 instruction in case of ftk x s 25 35 bvmb 9 66
- System configuration 67
- Caution 68
- Instruction in case of ftk x s 25 35 bvmb 68
- Safety precautions 68
- Warning 68
- A place from where the air discharged from the outdoor unit or the operation noise will not annoy your neighbour 69
- A place solid enough to bear the weight of the unit which does not amplify the operation noise or vibration 69
- Consider nuisance to your neighbours from noises 69
- Electrical work 69
- For power supply be sure to use a separate power circuit dedicated to the air conditioner 69
- I for installation choose a place as described below 69
- Installation site 69
- Places where snow may block the outdoor unit 69
- Places where sulfide gas occurs such as hot springs 69
- Places with an oily ambient or where steam or soot occurs 69
- Relocating the air conditioner requires specialized knowledge and skills please consult the dealer if reloca tion is necessary for moving or remodeling 69
- Salty environment such as coastal areas 69
- System relocation 69
- I indoor unit 70
- Names of parts 70
- On off 70
- I outdoor unit 71
- Iiii outdoor unit 71
- Indoor unit 71
- Arc433a1 a2 72
- I remote controller 72
- I to set the batteries 73
- Preparation before operation 73
- Attention 74
- Choose a place from where the sig nals reach the unit 74
- Fix the holder to a wall a pillar etc with the screws supplied with the holder 74
- I to fix the remote controller holder on the wall 74
- I to operate the remote controller 74
- Place the remote controller in the remote controller holder 74
- Preparation before operation 74
- Be careful not to cool heat the room too much keeping the temperature setting at a moderate level helps save energy cover windows with a blind or a curtain blocking sunlight and air from outdoors increases the cooling heating effect clogged air filters cause inefficient operation and waste energy clean them once in about every two weeks 75
- I to set the clock 75
- I turn the breaker on 75
- If you are not going to use the air conditioner for a long period for example in spring or autumn turn the breaker off 75
- Instruction in case of ftk x s 25 35 bvmb sibe12 314 75
- Operation outside this humidity or temperature range may cause a safety device to disable the system 75
- Press clock button 75
- Press timer setting button to set the clock to the present time 75
- Sensor 75
- Silent 75
- System configuration 75
- The air conditioner always consumes 15 35 watts of electricity even while it is not operating 75
- Use the air conditioner in the following conditions 75
- Auto dry cool heat fan operation 76
- I to change the temperature setting 76
- I to start operation 76
- I to stop operation 76
- I to change the air flow direction 77
- I to change the air flow rate setting 77
- Press fan setting button 77
- Adjusting the air flow direction 78
- I to adjust the horizontal blades flaps 78
- I to adjust the vertical blades louvers 79
- Notes on flaps and louvers angles 79
- I to cancel powerful operation 80
- I to start powerful operation 80
- Powerful operation 80
- I to cancel outdoor unit silent operation 81
- I to start outdoor unit silent operation 81
- Outdoor unit silent operation 81
- Before using home leave operation 82
- Home leave operation 82
- I to cancel home leave operation 82
- I to start home leave operation 82
- To set the temperature and air flow rate for home leave operation 82
- I useful in these cases 83
- I what s the home leave operation 83
- Use as a favorite mode 83
- Use as an energy saving mode 83
- I to cancel the intelligent eye operation 84
- I to start intelligent eye operation 84
- Intelligent eye operation 84
- Caution 85
- I to adjust the angle of the intelligent eye sensor 85
- Intelligent eye is useful for energy saving 85
- Notes on intelligent eye 85
- I to cancel the off timer operation 86
- I to use off timer opera tion 86
- Timer operation 86
- Attention 87
- I to cancel on timer operation 87
- I to combine on timer and off timer 87
- I to use on timer operation 87
- Press cancel button 87
- Press on timer button 87
- Press on timer button again 87
- Press timer setting button until the time setting reaches the point you like 87
- Note for multi system 88
- Selecting the operation mode 88
- I maximum power input limitation 89
- I priority room setting 89
- Operation mode priority 89
- Priority when powerful operation is used 89
- Priority when using outdoor unit silent operation 89
- Care and cleaning 90
- Caution 90
- I front grille 90
- I indoor unit outdoor unit and remote controller 90
- Clean or replace each filter 91
- Detach the filter element and attach a new one 91
- Dry the photocatalytic deodorizing filter in the sun 91
- Filters 91
- I air filter 91
- I air purifying filter green 91
- I photocatalytic deodorizing filter gray 91
- Maintenance 91
- Open the front grille page 24 91
- Pull out the air filters 91
- Replace approximately once every 3 months 91
- Replacement 91
- See below 91
- Set the air filter air purifying filter and photocatalytic deodorizing filter as they were and close the front grille 91
- Take off the air purifying filter photocatalytic deodorizing filter 91
- Wash the air filters with water or clean them with vacuum cleaner 91
- Air purifying filter without frame 92
- Clean the air filters and set them again 92
- Dispose of old air filters as non burnable waste and 92
- Filters as burnable waste 92
- I before a long idle period 92
- Operate the fan only for several hours on a fine day to dry out the inside 92
- Photocatalytic deodorizing filter and air purifying filter with frame 92
- Photocatalytic deodorizing filter without frame 92
- Press mode button and select fan operation 92
- Press on off button and start operation 92
- Take out batteries from the remote controller 92
- The paper material is torn or broken during cleaning 92
- Turn off the breaker for the room air conditioner 92
- Case explanation 93
- These cases are not troubles 93
- Trouble shooting 93
- Troubleshooting 93
- Case check 94
- Check again 94
- Call the service shop immediately 95
- Disposal requirements 95
- I the power cord is abnormally hot or damaged i an abnormal sound is heard during operation i the safety breaker a fuse or the earth leakage breaker cuts off the operation frequently i a switch or a button often fails to work properly i there is a burning smell i water leaks from the indoor unit 95
- Turn the breaker off and call the service shop 95
- Warning 95
- We recommend periodical maintenance 95
- Caution for diagnosis 8 2 problem symptoms and measures 0 3 service check function 1 4 troubleshooting 2 96
- Check 26 96
- Part 6 part 6 part 6 part 6 service diagnosis service diagnosis service diagnosis service diagnosis 96
- Part 6 service diagnosis 96
- Caution for diagnosis 97
- Indicator lamps 97
- Problem symptoms and measures 99
- Arc433a1 a2 100
- In the arc433a series the temperature display sections on the main unit indicate corresponding codes 1 when the timer cancel button is held down for 5 seconds a 00 indication flashes on the temperature display section 100
- 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 100
- Press the timer cancel button repeatedly until a continuous beep is produced 100
- Service check function 100
- The code indication changes in the sequence shown below and notifies with a long beep 100
- Displayed only when system down occurs 101
- Error codes and description 101
- Troubleshooting 101
- Indoor unit pcb abnormality 102
- Freeze up protection control or high pressure control 103
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 104
- Check no refer to p 28 104
- If the outdoor air temperature is below 10 c in the cooling mode the system may ge 104
- Interrupted with error a5 displayed the system will be reset itself but this stop will be put in the error history memory 104
- Service diagnosis 95 104
- Sibe12 314 troubleshooting 104
- Troubleshooting 104
- Check no 6 refer to p 33 105
- Detection error due to faulty indoor unit pcb 105
- Fan motor ac motor or related abnormality 105
- Malfunction decision conditions 105
- Method of malfunction detection 105
- Operation halt due to breaking of the fan motor lead wires 105
- Operation halt due to breaking of wire inside the fan motor 105
- Operation halt due to faulty capacitor of the fan motor 105
- Operation halt due to short circuit inside the fan motor winding 105
- Remote controller display 105
- Service diagnosis 105
- Supposed causes 105
- The rotation speed detected by the hall ic during fan motor operation is used to determine abnormal fan motor operation 105
- Troubleshooting 105
- Troubleshooting sibe12 314 105
- When the detected rotation speed is less than 50 of the hh tap under maximum fan motor rotation demand 105
- Thermistor or related abnormality indoor unit 106
- Anti icing function 107
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 108
- Check no refer to p 26 108
- Check no refer to p 28 108
- Service diagnosis 99 108
- Sibe12 314 troubleshooting 108
- Troubleshooting 108
- A compressor overload is detected through compressor ol 109
- Check no 1 refer to p 31 109
- Check no refer to p 26 109
- Check no refer to p 27 109
- Check no refer to p 28 109
- Electronic expansion valve defective 109
- Four way valve malfunctioning 109
- If the compressor ol is activated twice the system will be shut down 109
- Malfunction decision conditions 109
- Method of malfunction detection 109
- Ol activation compressor overload 109
- Outdoor unit pcb defective 109
- Refrigerant shortage 109
- Remote controller display 109
- Service diagnosis 109
- Stop valve defective 109
- Supposed causes 109
- 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 109
- The operating temperature condition is not specified 109
- Troubleshooting 109
- Troubleshooting sibe12 314 109
- Water mixed in the local piping 109
- A compressor lock is detected by checking the compressor running condition through the position detection circuit 110
- Clearing condition continuous run for about 5 minutes normal 110
- Compressor lock 110
- Compressor locked 110
- Malfunction decision conditions 110
- Method of malfunction detection 110
- Note if the model doesn t have spm replace the outdoor unit pcb 110
- Remote controller display 110
- Service diagnosis 101 110
- Sibe12 314 troubleshooting 110
- Supposed causes 110
- The position detection circuit detects a compressor frequency of below 5 hz for several tens of seconds 110
- The system will be shut down if the error occurs 16 times 110
- Troubleshooting 110
- Dc fan lock 111
- Input over current detection 112
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 113
- Check no 4 refer to p 32 113
- Check no refer to p 29 113
- Check no refer to p 30 113
- Note if the model doesn t have spm replace the outdoor unit pcb 113
- Service diagnosis 113
- Troubleshooting 113
- Troubleshooting sibe12 314 113
- Four way valve abnormality 114
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 115
- Check no 1 refer to p 31 115
- Check no refer to p 27 115
- Check no refer to p 28 115
- Service diagnosis 115
- Troubleshooting 115
- Troubleshooting sibe12 314 115
- Discharge pipe temperature control 116
- High pressure control in cooling 117
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 118
- Check no refer to p 26 118
- Check no refer to p 28 118
- Check no refer to p 29 118
- Check no refer to p 30 118
- Service diagnosis 109 118
- Sibe12 314 troubleshooting 118
- Troubleshooting 118
- A compressor startup failure is detected by checking the compressor running condition through the position detection circuit 119
- Check no 3 refer to p 32 119
- Clearing condition continuous run for about 5 minutes normal 119
- Compressor itself defective 119
- Compressor relay cable disconnected 119
- Input voltage out of specification 119
- Malfunction decision conditions 119
- Method of malfunction detection 119
- Outdoor unit pcb defective 119
- Position sensor abnormality 119
- Remote controller display 119
- Service diagnosis 119
- Stop valve closed 119
- Supposed causes compressor relay cable disconnected 119
- The compressor is not running in about 15 seconds after the compressor run command signal is sent 119
- The system will be shut down if the error occurs 8 times 119
- Troubleshooting 119
- Troubleshooting sibe12 314 119
- Ct or related abnormality 120
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 121
- Check no 2 refer to p 31 121
- Note if the model doesn t have spm replace the outdoor unit pcb 121
- Service diagnosis 121
- Troubleshooting 121
- Troubleshooting sibe12 314 121
- P4 j3 j6 j8 j9 h9 122
- Thermistor or related abnormality outdoor unit 122
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 123
- Check no refer to p 28 123
- P4 radiation fin thermistor j3 discharge pipe temperature thermistor j6 outdoor unit heat exchanger temperature thermistor j8 liquid pipe temperature thermistor j9 gas pipe temperature thermistor h9 outdoor air temperature thermistor 123
- Service diagnosis 123
- Troubleshooting 123
- Troubleshooting sibe12 314 123
- Electrical box temperature rise 124
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 125
- Check no refer to p 28 125
- Check no refer to p 29 125
- Check no refer to p 30 125
- Service diagnosis 125
- Troubleshooting 125
- Troubleshooting sibe12 314 125
- Radiation fin temperature rise 126
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 127
- Check no refer to p 28 127
- Check no refer to p 29 127
- Check no refer to p 30 127
- Service diagnosis 127
- Troubleshooting 127
- Troubleshooting sibe12 314 127
- Output over current detection 128
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 129
- Check no 3 refer to p 32 129
- Check no refer to p 29 129
- Check no refer to p 30 129
- Note if the model doesn t have spm replace the outdoor unit pcb 129
- Service diagnosis 129
- Troubleshooting 129
- Troubleshooting sibe12 314 129
- Insufficient gas 130
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 131
- Check no refer to p 26 131
- Check no refer to p 28 131
- Service diagnosis 131
- Troubleshooting 131
- Troubleshooting sibe12 314 131
- An abnormal voltage rise is detected by checking the detection circuit or dc voltage detection circuit 132
- An over voltage signal is fed from the over voltage detection circuit to the microcomputer or more than 430 v occurred the voltage detected by the dc voltage detection circuit 132
- Clearing condition continuous run for about 60 minutes normal 132
- Malfunction decision conditions 132
- Method of malfunction detection 132
- Note if the model doesn t have spm replace the outdoor unit pcb 132
- Over voltage detection 132
- Over voltage detector or dc voltage detection circuit defective 132
- Pam control part s defective 132
- Remote controller display 132
- Service diagnosis 123 132
- Sibe12 314 troubleshooting 132
- Supply voltage not as specified 132
- Supposed causes 132
- The system will be shut down if the error occurs 4 times 132
- Troubleshooting 132
- A wrong connection is detected by checking the combination of indoor and outdoor units on the microcomputer 133
- Anti icing function in other rooms unspecified voltage between indoor and outdoor units 133
- Malfunction decision conditions 133
- Method of malfunction detection 133
- Operation halt due to the anti icing function in other rooms 133
- Operation halt due to unspecified voltage between indoor and outdoor units 133
- Pcb wrongly connected 133
- Remote controller display 133
- Service diagnosis 133
- Supposed causes 133
- Troubleshooting 133
- Troubleshooting sibe12 314 133
- Wrong connections at the indoor unit 133
- Faulty indoor unit pcb 134
- Faulty outdoor unit pcb 134
- Indoor unit outdoor unit signal transmission error due to breaking of wire in the connection wires between the indoor and outdoor units the transmission wire 134
- Indoor unit outdoor unit signal transmission error due to wiring error 134
- Malfunction decision conditions 134
- Method of malfunction detection 134
- Outdoor unit pcb abnormality or signal transmission circuit abnormality 134
- Remote controller display 134
- Service diagnosis 125 134
- Sibe12 314 troubleshooting 134
- Supposed causes 134
- The data received from the outdoor unit in indoor unit outdoor unit signal transmission is checked whether it is normal 134
- Troubleshooting 134
- When the data sent from the outdoor unit cannot be received normally or when the content of the data is abnormal if the indoor unit cannot communicate with the outdoor unit for 15 seconds the system will be shut down 134
- Check no 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 continuity using a tester check the continuity 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 continuity is confirmed in the above step 3 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 135
- Electronic expansion valve check 135
- How to check 135
- If latching sound is generated the outdoor unit pcb is faulty 135
- If latching sound is not generated the ev unit is faulty 135
- Note please note that the latching sound varies depending on the valve type 135
- Check no 136
- Four way valve performance check 136
- Service diagnosis 127 136
- Sibe12 314 check 136
- Check no 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 137
- Thermistor resistance check 137
- Check no 138
- Installation condition check 138
- Service diagnosis 129 138
- Sibe12 314 check 138
- Check no 139
- Check sibe12 314 139
- Discharge pressure check 139
- Outdoor unit fan system check with dc motor 139
- Service diagnosis 139
- Capacitor voltage check 140
- Check no 1 140
- Check no 2 before this checking be sure to check the main circuit for short circuit 140
- Checking the capacitor voltage 140
- Inverter units refrigerant system check 140
- Service diagnosis 131 140
- Sibe12 314 check 140
- With the circuit breaker still on measure the voltage according to the drawing be careful never to touch any live parts 140
- Check no 3 141
- Check no 4 141
- Check the continuity with the tester reverse the pins and make sure there is continuity 141
- Checking the main circuit electrolytic capacitor 141
- Checking the power transistor 141
- For the uvw make measurements at the faston terminal on the pcb or the relay connector 141
- If unavoidably necessary to touch a live part make sure the power transistor s supply voltage is below 50 v using the tester 141
- If unavoidably necessary to touch a live part make sure there is no dc voltage using the tester 141
- Main circuit electrolytic capacitor check 141
- Never touch any live parts for at least 10 minutes after turning off the circuit breaker 141
- Power transistor check 141
- Hall ic check 142
- Turning speed pulse input on the outdoor unit pcb check 142
- Outdoor unit 36 144
- Part 7 part 7 part 7 part 7 removal procedure removal procedure removal procedure removal procedure 144
- Part 7 removal procedure 144
- Outdoor unit 145
- Removal of the panels fan motor 145
- Pull the fan motor lead wire away 148
- Release the four claws and remove the electrical box cover 148
- Unscrew the washer fitted nut m10 of the propeller fan with a spanner 148
- Removal of the pcb 150
- Removal of the electrical box 155
- Lift the electrical box up 157
- Release the wire clamp from the back side of the electrical box 157
- Remove the electrical box 157
- Removal of the sound blanket 158
- Remove the sound blanket bottom 160
- Remove the sound blanket side inner a 160
- Remove the sound blanket side inner b 160
- Removal of the thermistor 161
- Removal of the four way valve 162
- Removal of the electronic expansion valve 164
- Removal of the compressor 165
- Part 8 others 168
- Explanation 169
- Others 169
- Test run from the remote controller 169
- Cut the jumper j4 170
- Cut the jumper ja on pcb 170
- How to set the different addresses 170
- Jumper setting 170
- Jumper settings 170
- Pcb in the indoor unit 170
- Remove the front panel 170
- Remove the sensor parts cover 2 screws then remove the electric parts box 1 screw 170
- Slide the metallic cover to remove it 4 claws on the electric parts box 170
- When two indoor units are installed in one room the two wireless remote controllers can be set for different addresses 170
- When two units are installed in one room 170
- Wireless remote controller in case of wall mounted type 170
- Adjusting the angle of the intelligent eye sensor 171
- Part 9 appendix 172
- Duct connected type 173
- Indoor units 173
- Piping diagrams 173
- Wall mounted type 173
- Appendix 165 174
- Flks25 35bvmb flxs25 35bvmb 174
- Floor ceiling suspended dual type 174
- Sibe12 314 piping diagrams 174
- Accumulator 175
- Appendix 175
- Branch pipe 175
- Compressor 175
- D039392 175
- D039394 175
- Distributor 175
- Feild piping 175
- Feild piping liquid 175
- Gas pipe 175
- Liquid line 175
- Mks40bvmb 2amks40bvmb 175
- Muffler 175
- Mxs40bvmb 2amxs40bvmb 175
- Outdoor temparature thermistor doa 175
- Outdoor units 175
- Piping diagrams sibe12 314 175
- Reversing solenoid 175
- Room a 175
- Room b 175
- Stop valve 175
- Thermistor dga 175
- Thermistor dgb 175
- Thermistor do discharge pipe 175
- Cdks25 35bvmb cdxs25 35bvmb 176
- Duct connected type 176
- Ftks25 35bvmb atks25 35bvmb ftxs25 35bvmb atxs25 35bvmb 176
- Indoor units 176
- Wall mounted type 176
- Wiring diagrams 176
- Appendix 177
- Flks25 35bvmb flxs25 35bvmb 177
- Floor ceiling suspended dual type 177
- Wiring diagrams sibe12 314 177
- Appendix 169 178
- Mks40bvmb 2amks40bvmb 178
- Mxs40bvmb 2amxs40bvmb 178
- Outdoor units 178
- Pcb1 pcb2 178
- Sibe12 314 wiring diagrams 178
- Index index index index 180
- Numerics 180
- Drawings flow charts 184
- Drawings flow charts drawings flow charts drawings flow charts drawings flow charts 184
- B series 186
- Inverter multi for 2 rooms 186
- Manual 186
- Service 186
- Service manual inverter multi for 2 rooms b series sibe12 314 186
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