![Daikin FTXS25EVMA [2/182] Cooling only outdoor unit indoor unit](/img/pdf.png)
Daikin FTXS25EVMA [2/182] Cooling only outdoor unit indoor unit
![Daikin FTXS25EVMA [2/182] Cooling only outdoor unit indoor unit](/views2/1776092/page2/bg2.png)
Si12-710
Table of Contents i
Inverter Multi
F-Series
zCooling Only
Outdoor Unit Indoor Unit
2MKS40FV1B FTKS25DVM FDKS25CAVMB
FTKS35DVM FDKS35CAVMB
FDKS25EAVMB
FDKS35EAVMB
zHeat Pump
Outdoor Unit Indoor Unit
2MXS50FV1B FTXS25EVMA FDXS25CVMA
FTXS35EVMA FDXS35CVMA
CDXS25EAVMA
CDXS35EAVMA
Содержание
- F series 1
- Inverter multi 1
- Si12 710 1
- Cooling only outdoor unit indoor unit 2
- Heat pump outdoor unit indoor unit 2
- Inverter multi f series 2
- Table of contents 2
- Control specification 2 3
- Cooling only 3
- Cooling only 2 heat pump 3
- Heat pump 1 3
- Introduction v 3
- Main functions 4 3
- Part 1 list of functions 3
- Part 2 specifications 3
- Part 3 printed circuit board connector wiring diagram 5 3
- Part 4 function and control 3 3
- Printed circuit board connector wiring diagram 6 3
- Caution for diagnosis 02 2 problem symptoms and measures 04 3 service check function 05 4
- Instruction 1 4
- Part 5 operation manual 9 4
- Part 6 service diagnosis 01 4
- System configuration 0 4
- Troubleshooting 08 4
- Check 46 5
- Drawings flow charts v 5
- Index i 5
- Others 56 5
- Part 7 others 55 5
- Part 8 appendix 59 5
- Piping diagrams 60 5
- Wiring diagrams 62 5
- Cautions regarding safety of workers 6
- Introduction 6
- Safety cautions 6
- Warning 6
- Caution 7
- Warning 7
- Cautions regarding safety of users 8
- Warning 8
- Caution 9
- Warning 9
- Caution 10
- Icons are used to attract the attention of the reader to specific information the meaning of each icon is described in the table below 10
- Used icons 10
- Cooling only 2 heat pump 12
- Part 1 list of functions 12
- Cooling only 13
- Cooling only si12 710 13
- Holding functions no functions 13
- List of functions 13
- Holding functions no functions 14
- List of functions 3 14
- Si12 710 cooling only 14
- Heat pump 15
- Heat pump si12 710 15
- Holding functions no functions 15
- List of functions 15
- Holding functions no functions 16
- List of functions 5 16
- Si12 710 heat pump 16
- Cooling only 18
- Heat pump 1 18
- Part 2 specifications 18
- Cooling only 19
- Cooling only si12 710 19
- Duct connected type 50hz 230v 19
- Indoor units 19
- Specifications 19
- Wall mounted type 50hz 230v 19
- Hz 230v 20
- Si12 710 cooling only 20
- Specifications 9 20
- Cooling only si12 710 21
- Hz 230v 21
- Outdoor units 21
- Specifications 21
- Duct connected type 50hz 220 230 240v 22
- Heat pump 22
- Indoor units 22
- Si12 710 heat pump 22
- Specifications 11 22
- Wall mounted type 50hz 220 230 240v 22
- Heat pump si12 710 23
- Hz 220 230 240v 23
- Specifications 23
- Hz 220 230 240v 24
- Outdoor units 24
- Si12 710 heat pump 24
- Specifications 13 24
- Part 3 printed circuit board connector wiring diagram 26
- Printed circuit board connector wiring diagram 6 26
- Printed circuit board connector wiring diagram 27
- Wall mounted type 27
- Pcb 2 signal receiver pcb pcb 3 display pcb 28
- Pcb 4 intelligent eye sensor pcb 28
- Pcb detail pcb 1 control pcb indoor unit 28
- Printed circuit board connector wiring diagram 17 28
- Si12 710 printed circuit board connector wiring diagram 28
- Duct connected type 29
- Pcb detail pcb 2 display pcb 30
- Outdoor unit 31
- Pcb 1 control pcb 50 class 32
- Pcb detail pcb 1 control pcb 40 class 32
- Printed circuit board connector wiring diagram 21 32
- Si12 710 printed circuit board connector wiring diagram 32
- Control specification 2 34
- Main functions 4 34
- Part 4 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
- Fan speed control for indoor units 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
- Zone a thermostat off 39
- Zone b zone b 39
- Zone c thermostat on 39
- Automatic operation 40
- Cooling dry 41
- Duct connected type 41
- Function and control 41
- Heating 41
- Main functions si12 710 41
- The monitoring time has passed while the temperature difference is in the zone b cooling dry 10 minutes heating 10 seconds 41
- The operation turns on in any zones except a 41
- The system resumes from defrost control in any zones except a 41
- The temperature difference is above the zone c after being in the zone a 41
- The temperature difference is in the zone a 41
- Thermostat control 41
- Thermostat control is based on the difference between the room temperature and the setpoint 41
- Thermostat off condition 41
- Thermostat on condition 41
- Wall mounted type 41
- Night set mode 42
- Econo mode 43
- 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 44
- Function and control 33 44
- In case of fan mode the fan speed reduces by 50 rpm 44
- Intelligent eye 44
- Processing 1 detection method by intelligent eye 44
- Si12 710 main functions 44
- The motions for example in cooling 44
- 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 44
- This sensor detects human motion by receiving infrared rays and displays the pulse wave output 44
- 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 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 44
- Home leave operation 46
- Details of the control when powerful button is pushed in each operation mode the fan speed setting temperature will be converted to the following states in a period of 20 minutes 47
- Ex powerful operation in cooling mode 47
- Inverter powerful operation 47
- 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 47
- Refer to fan speed control on page 27 for detail 47
- Hot start function 48
- Mold proof air filter prefilter 48
- On off button on indoor unit 48
- Other functions 48
- Signal receiving sign 48
- Titanium apatite photocatalytic air purifying filter 48
- Auto restart function 49
- Self diagnosis digital display 49
- Function of thermistor 50
- Heat pump model 50
- Cooling only model 52
- Control specification 53
- Detail 1 for heat pump model there are following modes stop cooling includes drying heating include defrosting 53
- For cooling only model there are following models stop and cooling including drying 53
- For the rooms set with different mode select stand by mode operation lamp flashes 53
- Mode hierarchy 53
- 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 53
- 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 53
- The system will follow the mode determined first first push first set 53
- Frequency control 54
- Command frequency will be determined in the following order of priority 1 limiting frequency by drooping function 55
- D signal 1 p control calculate a total of the 55
- D signal and is used for frequency command 55
- D signal the difference between a room temperature and the temperature set by the remote controller will be taken as the 55
- D value in each sampling time 20 seconds and adjust the frequency according to its difference from the frequency previously calculated 55
- D value is large increase the frequency 55
- D value is small lower the frequency when the 55
- D value obtaining the fixed 55
- D value of each room and a total value of q 55
- D value when the 55
- Determine lower limit frequency 55
- Determine prohibited frequency 55
- Determine upper limit frequency 55
- For cooling only model 1 determine command frequency 55
- I control if the operating frequency is not change more than a certain fixed time adjust the frequency up and down according to the 55
- Indoor frequency command 55
- Input current discharge pipes freeze prevention dew prevention fin thermistor temperature 1 indoor frequency command 55
- Pi control determine frequency up down by 55
- 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 55
- Set a maximum value as an lower limit frequency among the frequency lower limits of the following functions pressure difference upkeep 55
- 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 55
- 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 55
- There is a certain prohibited frequency such as a power supply frequency 55
- 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 55
- 3 minute stand by 57
- Controls at mode changing start up 57
- Four way valve operation compensation 57
- Four way valve switching 57
- Preheating operation 57
- Compressor protection function 58
- When turning the compressor from off to on the upper limit of frequency must be set as follows the function must not be used when defrosting only for heat pump model 58
- Discharge pipe temperature control 59
- Input current control 59
- Freeze up protection control 60
- Heating peak cut control 60
- Fan control 61
- Liquid compression protection function 2 61
- Defrost control 62
- 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 40 class 4 c 12 c 50 class 4 c 15 c 62
- Function and control 51 62
- 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 62
- Si12 710 control specification 62
- Electronic expansion valve control 63
- Detail the followings are the examples of control which function in each mode by the electronic expansion valve control 64
- Function and control 53 64
- Si12 710 control specification 64
- Disconnection of the discharge pipe thermistor 65
- Fully closing with power on 65
- Gas pipe isothermal control during cooling 65
- Opening limit 65
- Pressure equalization control 65
- Sc control 65
- Starting operation changing operating room control 65
- Control when frequency is changed 66
- High temperature of the discharge pipe 66
- Oil recovery function 66
- Target discharge pipe temperature control 66
- Detection of overload and over current 67
- Insufficient gas control 67
- Malfunctions 67
- Sensor malfunction detection 67
- Detail forced cooling 68
- Detail judgment by input current when an output frequency is exceeds 51 hz 40 class or 48 hz 50 class and the input current is less than specified value the adjustment is made for insufficient gas judgment by discharge pipe temperature when discharge pipe temperature is higher than 101 c the electronic expansion value opening is 450 plus max and the adjustment is made for insufficient gas 68
- 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 68
- Forced operation mode 68
- Outline forced operating mode includes only forced cooling 68
- Preventing indoor freezing 68
- Additional function 69
- Compressor operating frequency and outdoor unit airflow rate are increased 69
- Power supply voltage is detected each time equipment operation starts 69
- Powerful operation mode 69
- Voltage detection function 69
- Instruction 1 70
- Part 5 operation manual 70
- System configuration 0 70
- Operation instructions 71
- System configuration 71
- Illustrations are for wall mounted type ftxs25 35e as representative 72
- Instruction 72
- Manual contents and reference page 72
- Caution 73
- Safety precautions 73
- Warning 73
- A place from where the air discharged from the outdoor unit or the operation noise will not annoy your neighbour 74
- A place solid enough to bear the weight of the unit which does not amplify the operation noise or vibration 74
- Consider nuisance to your neighbours from noises 74
- Electrical work 74
- For installation choose a place as described below 74
- For power supply be sure to use a separate power circuit dedicated to the air conditioner 74
- Installation site 74
- Operation manual 63 74
- Places where snow may block the outdoor unit 74
- Places where sulfide gas occurs such as hot springs 74
- Places with an oily ambient or where steam or soot occurs 74
- Relocating the air conditioner requires specialized knowledge and skills please consult the dealer if reloca tion is necessary for moving or remodeling 74
- Salty environment such as coastal areas 74
- Si12 710 instruction 74
- System relocation 74
- Ftks 25 35 d ftxs 25 35 e 75
- Indoor unit 75
- Names of parts 75
- Indoor unit 76
- Outdoor unit 76
- On off 77
- Remote controller 77
- Indoor unit 78
- Names of parts 78
- Indoor unit 79
- Outdoor unit 79
- Arc433b69 b76 80
- Remote controller 80
- Attention 81
- Preparation before operation 81
- To set the batteries 81
- Attention 82
- Choose a place from where the sig nals reach the unit 82
- Fix the holder to a wall a pillar etc with the screws supplied with the holder 82
- Place the remote controller in the remote controller holder 82
- Preparation before operation 82
- To fix the remote controller holder on the wall 82
- To operate the remote controller 82
- Be careful not to cool heat the room too much keeping the temperature setting at a moderate level helps save energy 83
- Blocking sunlight and air from outdoors increases the cooling heating effect 83
- Cancel 83
- Clogged air filters cause inefficient operation and waste energy clean them once in about every two weeks 83
- Condensation may occur on the indoor unit and drip 83
- Cover windows with a blind or a curtain 83
- If you are not going to use the air conditioner for a long period for example in spring or autumn turn the breaker off 83
- Mode fan 83
- Operation outside this humidity or temperature range may cause a safety device to disable the system 83
- Outdoor temperature 10 to 20 c indoor temperature 10 to 30 c 83
- Outdoor temperature 10 to 46 c indoor temperature 18 to 32 c indoor humidity 80 max 83
- Please note 83
- Press clock button 83
- Press timer setting button to set the clock to the present time 83
- Recommended temperature setting 83
- Sensor 83
- The air conditioner always consumes 15 35 watts of electricity even while it is not operating 83
- Tips for saving energy 83
- To set the clock 83
- Turn the breaker on 83
- Use the air conditioner in the following conditions 83
- Auto dry cool heat fan operation 84
- To change the temperature setting 84
- To start operation 84
- To stop operation 84
- Press fan setting button 85
- To change the air flow rate setting 85
- Adjusting the air flow direction 86
- To adjust the horizontal blades flaps 86
- Notes on flaps and louvres angles 87
- To adjust the vertical blades louvres 87
- Powerful operation 88
- To cancel powerful operation 88
- To start powerful operation 88
- Outdoor unit quiet operation 89
- To cancel outdoor unit quiet operation 89
- To start outdoor unit quiet operation 89
- Econo operation 90
- To cancel econo opera tion 90
- To start econo operation 90
- Before using home leave operation 91
- Home leave operation 91
- To cancel home leave operation 91
- To start home leave operation 91
- Use as a favorite mode 92
- Use as an energy saving mode 92
- Useful in these cases 92
- What s the home leave operation 92
- Mold proof operation 93
- To cancel mold proof operation 93
- To set mold proof operation 93
- Intelligent eye operation 94
- To cancel the intelligent eye operation 94
- To start intelligent eye operation 94
- Caution 95
- Intelligent eye is useful for energy saving 95
- Notes on intelligent eye 95
- Timer operation 96
- To cancel the off timer operation 96
- To use off timer opera tion 96
- Attention 97
- Press cancel button 97
- Press on timer button 97
- Press on timer button again 97
- Press timer setting button until the time setting reaches the point you like 97
- To cancel on timer operation 97
- To combine on timer and off timer 97
- To use on timer operation 97
- 1 cool dry and fan mode may be used at the same time auto mode automatically selects cool mode or heat mode based on the room temperature therefore auto mode is available when selecting the same operation mode as that of the room with the first unit to be turned on 98
- Caution 98
- However outdoor unit quiet operation display remains on the remote controller for other rooms we recommend you release all rooms using their remote controllers 98
- Night quiet mode reduces slightly the cooling efficiency of the unit 98
- Night quiet mode reduces the operation noise of the outdoor unit during the night time hours to prevent annoyance to neighbors 98
- Night quiet mode requires initial programming during installation please consult your retailer or dealer for assistance 98
- Normally the operation mode in the room where the unit is first run is given priority but the following situations are exceptions so please keep this in mind if the operation mode of the first room is fan mode then using heating mode in any room after this will give priority to heating in this situation the air conditioner running in fan mode will go on standby and the operation lamp will flash 98
- Note for multi system 98
- Operation manual 87 98
- See priority room setting on the next page 98
- Selecting the operation mode 98
- Si12 710 instruction 98
- The cooling heating mode lock requires initial programming during installation please consult your retailer or dealer for assistance the cooling heating mode lock sets the unit forcibly to either cooling or heating mode this function is convenient when you wish to set all indoor units connected to the multi system to the same operation mode 98
- The night quiet mode is activated when the temperature drops 5 c or more below the highest temperature recorded that day therefore when the temperature difference is less than 5 c this function will not be activated 98
- This system has one outdoor unit connected to multiple indoor units 98
- What is a multi system 98
- When clearing outdoor unit quiet operation clear one of the operating indoor units using their remote controller 98
- When more than one indoor unit is operating priority is given to the first unit that was turned on in this case set the units that are turned on later to the same operation mode 1 as the first unit otherwise they will enter the standby mode and the opera tion lamp will flash this does not indicate malfunction 98
- When using the outdoor unit quiet operation feature with the multi system set all indoor units to outdoor unit quiet operation using their remote controllers 98
- Example room a is the priority room in the examples 99
- Operation mode priority 99
- Priority room setting 99
- Priority when powerful operation is used 99
- Priority when using outdoor unit quiet operation 99
- The priority room setting requires initial programming during installation please consult your retailer or dealer for assistance 99
- Care and cleaning 100
- Caution 100
- Front panel 100
- Indoor unit outdoor unit and remote controller 100
- Air filter 101
- Filters 101
- Maintenance 101
- Replacement 101
- Titanium apatite photocatalytic air purifying filte 101
- After operation stops turn off the breaker for the room air conditioner 102
- Before a long idle period 102
- Clean the air filters and set them again 102
- Operate the fan only for several hours on a fine day to dry out the inside 102
- Take out batteries from the remote controller 102
- Before cleaning be sure to stop the operation and turn the breaker off 103
- Care and cleaning 103
- Caution 103
- Cleaning the air filter 103
- Fdk x s 25 35 c fdks 25 35 e 103
- Only a qualified service person is allowed to perform maintenance 103
- Removing the air filter 103
- Replacing the air filter 103
- After operation stops turn off the breaker for the room air conditioner 104
- Before a long idle period 104
- Caution 104
- Clean the air filters and set them again 104
- Cleaning the drain pan 104
- Operate the fan only for several hours on a fine day to dry out the inside 104
- Take out batteries from the remote controller 104
- Before cleaning be sure to stop the operation and turn the breaker off 105
- Care and cleaning 105
- Caution 105
- Cdxs 25 35 e 105
- Cleaning the air filter 105
- Only a qualified service person is allowed to perform maintenance 105
- Removing the air filter 105
- Replacing the air filter 105
- After operation stops turn off the breaker for the room air conditioner 106
- Before a long idle period 106
- Caution 106
- Clean the air filters and set them again 106
- Cleaning the drain pan 106
- Operate the fan only for several hours on a fine day to dry out the inside 106
- Take out batteries from the remote controller 106
- Case explanation 107
- These cases are not troubles 107
- Trouble shooting 107
- Troubleshooting 107
- Case check 108
- Check again 108
- Call the service shop immediately 109
- Disposal requirements 109
- Important information regarding the refrigerant used 109
- The power cord is abnormally hot or damaged an abnormal sound is heard during operation the safety breaker a fuse or the earth leakage breaker cuts off the operation frequently a switch or a button often fails to work properly there is a burning smell water leaks from the indoor unit 109
- Turn the breaker off and call the service shop 109
- Warning 109
- We recommend periodical maintenance 109
- Fault diagnosis 110
- Operation manual 99 110
- Si12 710 instruction 110
- The code indication changes as shown below and notifies with a long beep 110
- Caution for diagnosis 02 2 problem symptoms and measures 04 3 service check function 05 112
- Check 46 112
- Part 6 service diagnosis 112
- Troubleshooting 08 112
- Caution for diagnosis 113
- Problem symptoms and measures 115
- Arc433 series 1 when the timer cancel button is held down for 5 seconds a 00 indication flashes on the temperature display section 116
- Check method 1 116
- 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 116
- Press the timer cancel button repeatedly until a continuous beep is produced 116
- Service check function 116
- The code indication changes in the sequence shown below and notifies with a long beep 116
- The temperature display sections on the main unit indicate corresponding codes 116
- Check method 2 117
- Displayed only when system down occurs 119
- Error codes and description 119
- Troubleshooting 119
- Indoor unit pcb abnormality 120
- Freeze up protection control or high pressure control 121
- Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 122
- Caution 122
- Check no 6 refer to p 49 122
- Service diagnosis 111 122
- Si12 710 troubleshooting 122
- Troubleshooting 122
- Ac motor 123
- Check no 6 refer to p 54 123
- Detection error due to faulty control pcb 123
- Fan motor or related abnormality 123
- Malfunction decision conditions 123
- Method of malfunction detection 123
- Operation halt due to breaking of the fan motor lead wires 123
- Operation halt due to breaking of wire inside the fan motor 123
- Operation halt due to faulty capacitor of the fan motor 123
- Operation halt due to short circuit inside the fan motor winding 123
- Remote controller display 123
- Supposed causes 123
- The rotation speed detected by the hall ic during fan motor operation is used to determine abnormal fan motor operation 123
- Troubleshooting 123
- When the detected rotation speed does not reach the demanded rotation speed of the target tap and is less than 50 of the maximum fan motor rotation speed 123
- Dc motor 124
- Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 125
- Caution 125
- Check no 1 refer to p 46 125
- Service diagnosis 125
- Troubleshooting 125
- Troubleshooting si12 710 125
- Thermistor or related abnormality indoor unit 126
- 1 pull the plug out or turn the breaker off 2 remove the decorative plate 3 remove the slot in panel 4 put the plug in or turn the breaker on wait until the initialization finishes 5 operate the unit by the indoor unit on off switch 127
- Front panel open close fault 127
- Malfunction decision conditions 127
- Malfunction of the limit switch 127
- Malfunction of the reduction motor 127
- Malfunction or deterioration of the front panel mechanism 127
- Method of malfunction detection 127
- Remote controller display 127
- Service diagnosis 127
- Supposed causes 127
- The system will be shut down when the error occurs twice 127
- Troubleshooting 127
- Troubleshooting si12 710 127
- Freeze up protection control 128
- Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 129
- Caution 129
- Check no 4 refer to p 46 129
- Check no 6 refer to p 49 129
- Service diagnosis 129
- Troubleshooting 129
- Troubleshooting si12 710 129
- A compressor overload is detected through compressor ol 130
- Check no 1 refer to p 52 130
- Check no 4 refer to p 46 130
- Check no 5 refer to p 48 130
- Check no 6 refer to p 49 130
- Electronic expansion valve defective 130
- Four way valve malfunctioning 130
- If the compressor ol is activated twice the system will be shut down 130
- Malfunction decision conditions 130
- Method of malfunction detection 130
- Ol activation compressor overload 130
- Outdoor unit pcb defective 130
- Refrigerant shortage 130
- Remote controller display 130
- Service diagnosis 119 130
- Si12 710 troubleshooting 130
- Stop valve defective 130
- Supposed causes 130
- 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 130
- The operating temperature condition is not specified 130
- Troubleshooting 130
- Water mixed in the local piping 130
- Clearing condition continuous run for about 11 minutes normal 131
- Compressor lock 131
- Compressor locked 131
- Disconnection of compressor harness 131
- Judging from current waveform generated when high frequency voltage is applied to the compressor 131
- Malfunction decision conditions 131
- Method of malfunction detection 131
- Note if the model does not have spm replace the outdoor unit pcb 131
- Remote controller display 131
- Service diagnosis 131
- Supposed causes 131
- The system will be shut down if the error occurs 16 times 131
- Troubleshooting 131
- Troubleshooting si12 710 131
- Dc fan lock 132
- Input over current detection 133
- Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 134
- Caution 134
- Check no 4 refer to p 53 134
- Check no 7 refer to p 50 134
- Check no 8 refer to p 51 134
- Note if the model doesn t have spm replace the outdoor unit pcb 134
- Service diagnosis 123 134
- Si12 710 troubleshooting 134
- Troubleshooting 134
- Check no 1 refer to p 52 135
- Check no 4 refer to p 46 135
- Check no 6 refer to p 49 135
- Discharge pipe temperature control 135
- Discharge pipe thermistor defective heat exchanger or outdoor temperature thermistor defective 135
- Electronic expansion valve defective 135
- Four way valve malfunctioning 135
- If the compressor stops 6 times successively due to abnormal discharge pipe temperature the system will be shut down 135
- If the temperature being detected by the discharge pipe thermistor rises the compressor will stop the temperature at which the compressor halts varies according to the frequency 1 110 c when the frequency is above 30hz on ascending or above 25hz on descending 2 108 c when the frequency is below 30hz on ascending or below 25hz on descending 135
- Malfunction decision conditions 135
- Method of malfunction detection 135
- Outdoor unit pcb defective 135
- Refrigerant shortage 135
- Remote controller display 135
- Service diagnosis 135
- Stop valve defective 135
- Supposed causes 135
- The discharge pipe temperature control stop frequency drooping etc is checked with the temperature being detected by the discharge pipe thermistor 135
- 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 135
- The error is cleared when the temperature has dropped below 95 c 135
- Troubleshooting 135
- Troubleshooting si12 710 135
- Water mixed in the local piping 135
- High pressure control in cooling 136
- Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 137
- Caution 137
- Check no 4 refer to p 46 137
- Check no 6 refer to p 49 137
- Check no 7 refer to p 50 137
- Check no 9 refer to p 51 137
- Service diagnosis 137
- Troubleshooting 137
- Troubleshooting si12 710 137
- Compressor sensor system abnormality 138
- Position sensor abnormality 139
- Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 140
- Caution 140
- Check no 3 refer to p 53 140
- Check no 8 refer to p 51 140
- Service diagnosis 129 140
- Si12 710 troubleshooting 140
- Troubleshooting 140
- Dc voltage dc current sensor abnormality 141
- P4 j3 j6 j8 j9 h9 142
- Thermistor or related abnormality outdoor unit 142
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 143
- Check no 6 refer to p 49 143
- Discharge pipe thermistor 143
- Gas pipe thermistor 143
- Liquid pipe thermistor 143
- Outdoor temperature thermistor 143
- Outdoor unit heat exchanger thermistor 143
- Radiation fin thermistor 143
- Service diagnosis 143
- Troubleshooting 143
- Troubleshooting si12 710 143
- Electrical box temperature rise 144
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 145
- Check no 6 refer to p 49 145
- Check no 7 refer to p 50 145
- Check no 9 refer to p 51 145
- Service diagnosis 145
- Troubleshooting 145
- Troubleshooting si12 710 145
- Radiation fin temperature rise 146
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 147
- Check no 6 refer to p 49 147
- Check no 7 refer to p 50 147
- Check no 9 refer to p 51 147
- Note refer to 1 application of silicon grease to a power transistor and a diode bridge on p 158 147
- Service diagnosis 147
- Troubleshooting 147
- Troubleshooting si12 710 147
- Output over current detection 148
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 149
- Check no 3 refer to p 53 149
- Check no 7 refer to p 50 149
- Check no 8 refer to p 51 149
- Note if the model does not have spm replace the outdoor unit pcb 149
- Service diagnosis 149
- Troubleshooting 149
- Troubleshooting si12 710 149
- Insufficient gas 150
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 151
- Check no 4 refer to p 46 151
- Check no 6 refer to p 49 151
- Service diagnosis 151
- Troubleshooting 151
- Troubleshooting si12 710 151
- An abnormal voltage rise or drop is detected by checking the detection circuit or dc voltage detection circuit 152
- An over voltage signal is fed from the over voltage detection circuit to the microcomputer or the voltage being detected by the dc voltage detection circuit is judged to be below 150v for 0 second 152
- Clearing condition continuous run for about 60 minutes normal 152
- Malfunction decision conditions 152
- Method of malfunction detection 152
- Over voltage detection low voltage detection 152
- Over voltage detector or dc voltage detection circuit defective 152
- Pam control part s defective 152
- Remote controller display 152
- Service diagnosis 141 152
- Short circuit inside the fan motor winding 152
- Si12 710 troubleshooting 152
- Supply voltage not as specified 152
- Supposed causes 152
- The system will be shut down if the error occurs 255 times 152
- Troubleshooting 152
- Anti icing function in other rooms unspecified voltage between indoor and outdoor units 153
- Outdoor unit pcb abnormality or signal transmission circuit abnormality 154
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 155
- Service diagnosis 155
- Troubleshooting 155
- Troubleshooting si12 710 155
- Check no 0 refer to p 51 156
- Service diagnosis 145 156
- Si12 710 troubleshooting 156
- Electronic expansion valve check 157
- Fan motor connector output check 157
- How to check 157
- Limit switch continuity check 157
- Check no 5 159
- Check si12 710 159
- Four way valve performance check 159
- Service diagnosis 159
- Check no 6 remove the connectors of the thermistors on the pcb and measure the resistance of each thermistor using tester the relationship between normal temperature and resistance is shown in the graph and the table below 160
- Thermistor resistance check 160
- Check no 7 161
- Check si12 710 161
- Installation condition check 161
- Service diagnosis 161
- Check no 0 measure the power supply waveform between pins 1 and 3 on the terminal board and check the waveform disturbance 162
- Check no 8 162
- Check no 9 162
- Check to see if the power supply waveform is a sine wave fig 162
- Check to see if there is waveform disturbance near the zero cross sections circled in fig 162
- Discharge pressure check 162
- Fig fig 162
- Outdoor unit fan system check with dc motor 162
- Power supply waveforms check 162
- Service diagnosis 151 162
- Si12 710 check 162
- Capacitor voltage check 163
- Check no 1 163
- Check no 2 before this checking be sure to check the main circuit for short circuit 163
- Check si12 710 163
- Checking the capacitor voltage 163
- Inverter units refrigerant system check 163
- Service diagnosis 163
- With the circuit breaker still on measure the voltage according to the drawing be careful never to touch any live parts 163
- Check no 3 164
- Check no 4 164
- Check the continuity with the tester reverse the pins and make sure there is continuity 164
- Checking the main circuit electrolytic capacitor 164
- Checking the power transistor 164
- For the uvw make measurements at the faston terminal on the pcb or the relay connector 164
- If unavoidably necessary to touch a live part make sure the power transistor s supply voltage is below 50 v using the tester 164
- If unavoidably necessary to touch a live part make sure there is no dc voltage using the tester 164
- Main circuit electrolytic capacitor check 164
- Never touch any live parts for at least 10 minutes after turning off the circuit breaker 164
- Power transistor check 164
- Hall ic check 165
- Turning speed pulse input on the outdoor unit pcb check 165
- Others 56 166
- Part 7 others 166
- Others 167
- Test run from the remote controller 167
- Control pcb of the indoor unit 1 remove the front panel 2 remove the sensor parts cover 2 screws then remove the electric parts box 1 screw 3 slide the metallic cover to remove it 4 claws on the electric parts box 4 cut the jumper ja on pcb 168
- How to set the different addresses 168
- Jumper setting 168
- Jumper settings 168
- When two indoor units are installed in one room the two wireless remote controllers can be set for different addresses 168
- When two units are installed in one room 168
- Wireless remote controller 1 slide the front cover and take it off 2 cut the address jumper j4 168
- Application of silicon grease to a power transistor and a diode bridge 169
- Part 8 appendix 170
- Piping diagrams 60 170
- Wiring diagrams 62 170
- D050757a 171
- Duct connected type 171
- Fdks25 35eavmb fdks25 35cavmb fdxs25 35cvma cdxs25 35eavma 171
- Ftks25 35dvm ftxs25 35evma 171
- Heat exchanger 171
- Indoor units 171
- Piping diagrams 171
- Thermistor on heat exch 171
- Wall mounted type 171
- Appendix 161 172
- Mks40fv1b 172
- Mxs50fv1b 172
- Outdoor units 172
- Si12 710 piping diagrams 172
- Duct connected type 173
- Indoor units 173
- Wall mounted type 173
- Wiring diagrams 173
- Appendix 163 174
- Mks40fv1b 174
- Mxs50fv1b 174
- Outdoor units 174
- Si12 710 wiring diagrams 174
- Numerics 176
- Drawings flow charts 180
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