Daikin RK35GV1B [2/184] Cooling only indoor units

Daikin FTX20GV1B [2/184] Cooling only indoor units

Si04-807

Table of Contents i

Inverter Pair

G-Series

Cooling Only

Indoor Units

FTK20GV1B

FTK25GV1B

FTK35GV1B

Outdoor Units

RK20GV1B

RK25GV1B

RK35GV1B

Heat Pump

Indoor Units

FTX20GV1B ATX20GV1B

FTX25GV1B ATX25GV1B

FTX35GV1B ATX35GV1B

Outdoor Units

RX20GV1B ARX20GV1B

RX25GV1B ARX25GV1B

RX35GV1B ARX35GV1B

Содержание

Inverter pair 1
Si04 807 1
Wall mounted type g series 1
Cooling only indoor units 2
Heat pump indoor units 2
Inverter pair g series 2
Outdoor units 2
Table of contents 2
Control specification 2 3
Function of thermistor 1 3
Introduction v 3
List of functions 3
Main functions 0 3
Part 1 list of functions 3
Part 2 specifications 3
Part 3 printed circuit board connector wiring diagram 3 3
Part 4 function and control 9 3
Printed circuit board connector wiring diagram 4 3
Specifications 3
Caution for diagnosis 2 2 problem symptoms and measures 3 3 service check function 4 4 troubleshooting 7 4
Check 10 4
Indoor unit 20 4
Part 5 operation manual 7 4
Part 6 service diagnosis 1 4
Part 7 removal procedure 19 4
System configuration 8 2 instruction 9 4
Drawings flow charts v 5
Index i 5
Others 58 5
Outdoor unit 41 5
Part 8 others 57 5
Part 9 appendix 61 5
Piping diagrams 62 5
Wiring diagrams 65 5
Cautions regarding safety of workers 6
Introduction 6
Safety cautions 6
Warning 6
Caution 7
Warning 7
Cautions regarding safety of users 8
Warning 8
Caution 9
Warning 9
Caution 10
Icons are used to attract the attention of the reader to specific information the meaning of each icon is described in the table below 10
Used icons 10
List of functions 12
Part 1 list of functions 12
Holding functions no functions 13
List of functions 13
List of functions si04 807 13
Holding functions no functions 14
List of functions 3 14
Si04 807 list of functions 14
Part 2 specifications 16
Specifications 16
Cooling only 17
Hz 230v 17
Specifications 17
Specifications si04 807 17
Hz 230v 18
Si04 807 specifications 18
Specifications 7 18
Heat pump 19
Hz 230v 19
Specifications 19
Specifications si04 807 19
Hz 230v 20
Si04 807 specifications 20
Specifications 9 20
Hz 230v 21
Specifications 21
Specifications si04 807 21
Hz 230v 22
Si04 807 specifications 22
Specifications 11 22
Part 3 printed circuit board connector wiring diagram 24
Printed circuit board connector wiring diagram 4 24
Indoor units 25
Printed circuit board connector wiring diagram 25
Pcb 2 display pcb 26
Pcb detail pcb 1 control pcb 26
Printed circuit board connector wiring diagram 15 26
Si04 807 printed circuit board connector wiring diagram 26
Outdoor units 27
Pcb 2 main pcb 28
Pcb detail pcb 1 filter pcb 28
Printed circuit board connector wiring diagram 17 28
Si04 807 printed circuit board connector wiring diagram 28
Control specification 2 30
Function of thermistor 1 30
Main functions 0 30
Part 4 function and control 30
Additional control parameters 31
Drawing of inverter the following drawing shows a schematic view of the inverter principle 31
Forced cooling operation 31
Frequency principle 31
Frequency restrictions 31
Initial settings 31
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 31
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 31
Main functions 31
The difference between the room temperature and the set temperature 31
The load condition of the operating indoor unit 31
The target frequency is adapted by additional parameters in the following cases 31
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 32
Energy saving heating and cooling once the set temperature is reached the energy saving operation enables to maintain the room temperature at low power 32
Even during extreme cold weather the high capacity is achieved it is maintained even when the outdoor air temperature is 2 c 32
Forced cooling operation for more information refer to forced operation mode on page 32
Frequency limits the following table shows the functions that define the minimum and maximum frequency 32
Inverter features the inverter provides the following features 32
Quick heating and quick cooling the compressor rotational speed is increased when starting the heating or cooling this enables a quick set temperature 32
The regulating capacity can be changed according to the changes in the outdoor air temperature and cooling heating load 32
Airflow direction control 33
Fan speed control for indoor units 34
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 35
Programme dry function 35
Programme dry function removes humidity while preventing the room temperature from lowering since the microcomputer controls both the temperature and airflow volume the temperature adjustment and fan adjustment buttons are inoperable in this mode 35
Zone a thermostat off 35
Zone b zone b 35
Zone c thermostat on 35
Automatic operation 36
Cooling dry 37
Function and control 37
Heating 37
Main functions si04 807 37
The monitoring time has passed while the temperature difference is in the zone b cooling dry 10 minutes heating 10 seconds 37
The operation turns on in any zones except a 37
The system resumes from defrost control in any zones except a 37
The temperature difference is above the zone c after being in the zone a 37
The temperature difference is in the zone a 37
Thermostat control 37
Thermostat control is based on the difference between the room temperature and the setpoint 37
Thermostat off condition 37
Thermostat on condition 37
Night set mode 38
Econo mode 39
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 40
Ex powerful operation in cooling mode 40
Inverter powerful operation 40
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 40
Auto restart function 41
Hot start function 41
Mold proof air filter prefilter 41
On off button on indoor unit 41
Other functions 41
Self diagnosis digital display 41
Signal receiving sign 41
Function of thermistor 42
Heat pump model 42
Control specification 43
Control specification si04 807 43
Detail 1 for heat pump model there are following modes stop cooling includes drying heating include defrosting 43
For cooling only model there are following models stop and cooling including drying 43
Function and control 43
Mode hierarchy 43
Note unless specified otherwise an indoor dry operation command must be regarded as cooling operation 43
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 43
Frequency control 44
D signal 1 p control calculate 45
D signal and is used for frequency command 45
D signal the difference between a room temperature and the temperature set by the remote controller will be taken as the 45
D value in each sampling time 20 seconds and adjust the frequency according to its difference from the frequency previously calculated 45
D value is large increase the frequency 45
D value is small decrease the frequency when the 45
D value obtaining the fixed 45
D value of the indoor unit and the q value of the indoor unit q value indoor unit output determined from indoor unit volume airflow rate and other factors 45
D value when the 45
Determine lower limit frequency 45
Determine prohibited frequency 45
Determine upper limit frequency 45
For limiting lower limit frequency management is carried out only when the frequency rises 45
Frequency management when other controls are functioning 45
I control if the operating frequency is not change more than a certain fixed time adjust the frequency up and down according to the 45
Indoor frequency command 45
Pi control determine frequency up down by 45
Set a maximum value as an lower limit frequency among the frequency lower limits of the following functions pressure difference upkeep 45
Set a minimum value as an upper limit frequency among the frequency upper limits of the following functions compressor protection input current discharge pipes freeze up protection dew prevention fin thermistor temperature 45
Th off thermostat off 45
There is a certain prohibited frequency such as a power supply frequency 45
Upper and lower limit of frequency by pi control the frequency upper and lower limits are set depending on indoor unit when low noise commands come from the indoor unit or when outdoor unit low noise or quiet commands come from indoor unit the upper limit frequency must be lowered than the usual setting 45
When frequency is drooping frequency management is carried out only when the frequency droops 45
When starting the compressor or when conditions are varied due to the change of the room the frequency must be initialized according to the 45
Controls at mode changing start up 46
Four way valve operation compensation 46
Four way valve switching 46
Preheating operation 46
3 minute standby 47
Compressor protection function 47
Detail divide the zone 47
Discharge pipe temperature control 47
Management within the zones 47
Outline the discharge pipe temperature is used as the compressor s internal temperature if the discharge pipe temperature rises above a certain level the operating frequency upper limit is set to keep this temperature from going up further 47
Prohibit to turn on the compressor for 3 minutes after turning it off except when defrosting only for heat pump model 47
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 47
After 2 s in this zone the compressor is stopped 48
After this the output frequency is pulled down by 2hz every second until it reaches the steady zone keep zone 48
Detail 48
Frequency control in each zone drooping zone 48
Input current control 48
Limit of the frequency is cancelled stop zone 48
Limitation of current drooping and stop value according to the outdoor air temperature 1 in case the operation mode is cooling 48
Outline the microcomputer calculates the input current during the compressor is running and set the frequency upper limit from such input current in case of heat pump model this control is the upper limit control function of the frequency which takes priority of the lower limit of four way valve activating compensation 48
The current droops when outdoor air temperature becomes higher than a certain level model by model 48
The current droops when outdoor air temperature becomes higher than a certain level model by model 2 in case the operation mode is heating 48
The maximum limit of the compressor frequency in this control is defined as operation frequency 2hz 48
The present maximum frequency goes on reset zone 48
Freeze up protection control 49
Heating peak cut control 49
Fan control 50
Liquid compression protection function 2 50
Control specification si04 807 51
Defrost control 51
Detail conditions for starting defrost the starting conditions must be made with the outdoor air temperature and heat exchanger temperature under the conditions that the system is in heating operation 6 minutes after the compressor is started and more than 28 minutes of accumulated time pass since the start of the operation or ending the defrosting conditions for canceling defrost the judgment must be made with heat exchanger temperature 4 c 22 c 51
Function and control 51
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 51
Detail the followings are the examples of control which function in each mode by the electronic expansion valve control 52
Electronic expansion valve control 52
Function and control 41 52
Outline the following items are included in the electronic expansion valve control electronic expansion valve is fully closed 1 electronic expansion valve is fully closed when turning on the power 2 pressure equalizing control open control 1 electronic expansion valve control when starting operation 2 control when frequency changed 3 control for defrosting only for heat pump model 4 control when a discharge pipe temperature is abnormally high 5 control when the discharge pipe thermistor is disconnected feedback control 1 discharge pipe temperature control 52
Si04 807 control specification 52
Disconnection of the discharge pipe thermistor 53
Fully closing with power on 53
High temperature of the discharge pipe 53
Opening limit 53
Pressure equalization control 53
Starting operation control 53
Control when frequency is changed 54
Target discharge pipe temperature control 54
Detection of overload and over current 55
Insufficient gas control 55
Malfunctions 55
Sensor malfunction detection 55
Additional function 56
Compressor operating frequency is increased to pi max max hz of operating room and outdoor unit airflow rate is increased 56
Detail forced cooling 56
Detail i judgment by power consumption when an output frequency is exceeds 50 hz and the input current is less than specified value the adjustment is made for insufficient gas 56
Forced operation mode 56
Ii judgment by discharge pipe temperature when discharge pipe temperature is certain degree higher than target value and the electronic expansion value opening is 470 pulses max the adjustment is made for insufficient gas 56
Iii judgment by the difference of temperature when the difference of the temperature is smaller than it is regarded as insufficient gas 56
Outline forced operating mode includes only forced cooling 56
Power supply voltage is detected each time equipment operation starts 56
Powerful operation mode 56
Voltage detection function 56
Part 5 operation manual 58
System configuration 8 2 instruction 9 58
System configuration 59
Caution 60
Instruction 60
Safety precautions 60
Warning 60
Consider nuisance to your neighbours from noises 61
Electrical work 61
Installation site 61
System relocation 61
Indoor unit 62
Name of parts 62
Names of parts 62
Outdoor unit 63
Arc433a87 a8 64
Remote controller 64
Preparation before operation 65
To set the batteries 65
Attention 66
Choose a place from where the sig nals reach the unit 66
Fix the holder to a wall a pillar or similar location with the screws procured locally 66
Place the remote controller in the remote controller holder 66
Preparation before operation 66
To fix the remote controller holder on the wall 66
To operate the remote controller 66
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 67
Cancel 67
Comfort 67
Condensation may occur on the indoor unit and drip 67
If you are not going to use the air conditioner for a long period for example in spring or autumn turn the breaker off 67
Mode fan 67
Operation outside this humidity or temperature range may cause a safety device to disable the system 67
Outdoor temperature 10 to 46 c indoor temperature 18 to 32 c indoor humidity 80 max 67
Outdoor temperature 15 to 20 c indoor temperature 10 to 30 c 67
Please note 67
Press clock button 67
Recommended temperature setting 67
The air conditioner always consumes 15 35 watts of electricity even while it is not operating 67
Tips for saving energy 67
To set the clock 67
Turn the breaker on 67
Turning on the breaker opens the flap then closes it again this is a normal procedure 67
Use the air conditioner in the following conditions 67
Auto dry cool heat fan operation 68
To change the temperature setting 68
To start operation 68
To stop operation 68
Press fan setting button 69
To change the airflow rate setting 69
Adjusting the airflow direction 70
To adjust the horizontal blades flaps 70
To adjust the vertical blades louvers 70
Always use a remote controller to adjust the flaps angle if you attempt to move it forcibly with hand when it is swinging the mechanism may be broken 71
Notes on comfort airflow operation 71
Notes on flaps and louvers angles 71
Press comfort airflow button 71
Press comfort airflow button again 71
The flap will go down 71
To cancel comfort airflow operation 71
To start comfort airflow operation 71
Powerful operation 72
To cancel powerful operation 72
To start powerful operation 72
Econo operation 73
To cancel econo opera tion 73
To start econo operation 73
Timer operation 74
To cancel the off timer operation 74
To use off timer operation 74
Attention 75
Press cancel button 75
Press on timer button 75
Press on timer button again 75
Press timer setting button until the time setting reaches the point you like 75
To cancel on timer operation 75
To combine on timer and off timer 75
To use on timer operation 75
Care and cleaning 76
Caution 76
Front panel 76
Indoor unit outdoor unit and remote controller 76
Air filter 77
Clean or replace each filter 77
Filters 77
Open the front panel page 18 77
Pull out the air filters 77
Set the air filter and titanium apatite photocatalytic air purifying filter as they were and close the front panel 77
Take off the titanium apatite photocatalytic air purifying filter 77
Titanium apatite photocatalytic air purifying filte 77
Wash the air filters with water or clean them with vacuum cleaner 77
Before a long idle period 78
Maintenance 78
Replacement 78
Case explanation 79
These cases are not troubles 79
This happens when smells of the room furniture or cigarettes are absorbed into the unit and discharged with the airflow if this happens we recommend you to have the indoor unit washed by a technician consult the service shop where you bought the air conditioner 79
Trouble shooting 79
Troubleshooting 79
Case check 80
Check again 80
Call the service shop immediately 81
Disposal requirements 81
Important information regarding the refrigerant used 81
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 81
Turn the breaker off and call the service shop 81
Warning 81
We recommend periodical maintenance 81
Caution for diagnosis 2 2 problem symptoms and measures 3 3 service check function 4 4 troubleshooting 7 82
Check 10 82
Part 6 service diagnosis 82
Caution for diagnosis 83
Indicator lamps 83
Problem symptoms and measures 84
Arc433a87 a8 85
Check method 1 1 when the timer cancel button is held down for 5 seconds a 00 indication flashes on the temperature display section 85
In the arc433 series remote controller the temperature display sections on the main unit indicate corresponding codes 85
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 85
Press the timer cancel button repeatedly until a continuous beep is produced 85
Service check function 85
The code indication changes in the sequence shown below and notifies with a long beep 85
Displayed only when system down occurs 88
Error codes and description 88
Troubleshooting 88
Indoor unit pcb abnormality 89
Freeze up protection control or high pressure control 90
Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 91
Caution 91
Check no 6 refer to p 12 91
Service diagnosis 91
Troubleshooting 91
Troubleshooting si04 807 91
Fan motor dc motor or related abnormality 92
Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 93
Check no 0 refer to p 12 93
Check no 8 refer to p 16 93
Check no 9 refer to p 12 93
Service diagnosis 93
Troubleshooting 93
Troubleshooting si04 807 93
Thermistor or related abnormality indoor unit 94
Check no 0 refer to p 14 95
Faulty outdoor unit pcb faulty indoor unit pcb 95
Indoor unit outdoor unit signal transmission error due to wiring error due to disturbed power supply waveform due to breaking of wire in the connection wires between the indoor and outdoor units wire no 3 95
Malfunction decision conditions 95
Method of malfunction detection 95
Remote controller display 95
Short circuit inside the fan motor winding 95
Signal transmission error between indoor and outdoor unit 95
Supposed causes 95
The data received from the outdoor unit in indoor unit outdoor unit signal transmission is checked whether it is normal 95
Troubleshooting 95
When the data sent from the outdoor unit cannot be received normally or when the content of the data is abnormal 95
Unspecified voltage between indoor and outdoor units 96
Outdoor unit pcb abnormality 97
A compressor overload is detected through compressor ol 98
Check no 1 refer to p 15 98
Check no 4 refer to p 10 98
Check no 5 refer to p 11 98
Check no 6 refer to p 12 98
Electronic expansion valve defective 98
Four way valve malfunctioning 98
If the compressor ol is activated twice the system will be shut down 98
Malfunction decision conditions 98
Method of malfunction detection 98
Ol activation compressor overload 98
Outdoor unit pcb defective 98
Refrigerant shortage 98
Remote controller display 98
Stop valve defective 98
Supposed causes 98
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 98
The operating temperature condition is not specified 98
Troubleshooting 98
Water mixed in the local piping 98
A compressor lock is detected by checking the compressor running condition through the position detection circuit 99
Clearing condition continuous run for about 10 minutes normal 99
Compressor harness disconnected 99
Compressor lock 99
Compressor locked 99
Malfunction decision conditions 99
Method of malfunction detection 99
Remote controller display 99
Supposed causes 99
The system judges the compressor lock and cannot operation with position detection within 15 seconds after start up 99
The system judges the compressor lock and stops due to over current 99
The system will be shut down if the error occurs 16 times 99
Troubleshooting 99
Dc fan lock 100
An input over current is detected by checking the input current value with the compressor running 101
Check no 7 refer to p 13 101
Check no 8 refer to p 13 101
Error detection due to outdoor unit pcb 101
Heating above 14a 101
Input over current detection 101
Malfunction decision conditions 101
Method of malfunction detection 101
Over current due to compressor failure 101
Over current due to defective outdoor unit pcb 101
Over current due to defective power transistor 101
Over current due to short circuit 101
Remote controller display 101
Supposed causes 101
The following current with the compressor running continues for 2 seconds coolin 101
Troubleshooting 101
Four way valve abnormality 102
Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 103
Check no 1 refer to p 15 103
Check no 5 refer to p 11 103
Check no 6 refer to p 12 103
Service diagnosis 103
Troubleshooting 103
Troubleshooting si04 807 103
Check no 1 refer to p 15 104
Check no 4 refer to p 10 104
Check no 6 refer to p 12 104
Discharge pipe temperature control 104
Discharge pipe thermistor defective heat exchanger or outdoor air temperature thermistor defective 104
Electronic expansion valve defective 104
Four way valve malfunctioning 104
If a stop takes place 4 times successively due to abnormal discharge pipe temperature the system will be shut down 104
If the temperature being detected by the discharge pipe thermistor rises above c the compressor will stop the error is cleared when the temperature has dropped below c 104
Malfunction decision conditions 104
Method of malfunction detection 104
Outdoor unit pcb defective 104
Refrigerant shortage 104
Remote controller display 104
Stop temperatures 104
Stop valve defective 104
Supposed causes 104
The discharge pipe temperature control stop frequency drooping etc is checked with the temperature being detected by the discharge pipe thermistor 104
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 104
Troubleshooting 104
Water mixed in the local piping 104
High pressure control in cooling 105
Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 106
Caution 106
Check no 4 refer to p 10 106
Check no 6 refer to p 12 106
Check no 7 refer to p 13 106
Check no 9 refer to p 14 106
Service diagnosis 95 106
Si04 807 troubleshooting 106
Troubleshooting 106
Compressor system sensor abnormality 107
A compressor startup failure is detected by checking the compressor running condition through the position detection circuit 108
Check no 3 refer to p 15 108
Clearing condition continuous run for about 10 minutes normal 108
Compressor itself defective 108
Compressor relay cable disconnected 108
Input voltage out of specification 108
Malfunction decision conditions 108
Method of malfunction detection 108
Outdoor unit pcb defective 108
Position sensor abnormality 108
Remote controller display 108
Stop valve closed 108
Supposed causes 108
The compressor fails to start in about 15 seconds after the compressor run command signal is sent 108
The system will be shut down if the error occurs 16 times 108
Troubleshooting 108
Dc voltage current sensor abnormality 109
Thermistor or related abnormality outdoor unit 110
Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 111
Check no 6 refer to p 12 111
Discharge pipe thermistor 111
Outdoor air temperature thermistor 111
Outdoor heat exchanger thermistor 111
Radiation fin thermistor 111
Service diagnosis 111
Troubleshooting 111
Troubleshooting si04 807 111
Electrical box temperature rise 112
Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 113
Check no 6 refer to p 12 113
Check no 7 refer to p 13 113
Check no 9 refer to p 14 113
Service diagnosis 113
Troubleshooting 113
Troubleshooting si04 807 113
Radiation fin temperature rise 114
Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 115
Check no 6 refer to p 12 115
Check no 7 refer to p 13 115
Check no 9 refer to p 14 115
Note refer to 1 application of silicon grease to a power transistor and a diode bridge on p160 115
Service diagnosis 115
Troubleshooting 115
Troubleshooting si04 807 115
Output over current detection 116
Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 117
Check no 3 refer to p 15 117
Check no 7 refer to p 13 117
Check no 8 refer to p 13 117
Service diagnosis 117
Troubleshooting 117
Troubleshooting si04 807 117
Insufficient gas 118
Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 119
Check no 4 refer to p 10 119
Check no 6 refer to p 12 119
Service diagnosis 119
Troubleshooting 119
Troubleshooting si04 807 119
An abnormal voltage rise is detected by checking the specified over voltage detection circuit 120
An over voltage signal is fed from the over voltage detection circuit to the microcomputer the voltage is over 400v 120
Clearing condition continuous run for about 10 minutes normal 120
Malfunction decision conditions 120
Method of malfunction detection 120
Over voltage detection 120
Over voltage detection circuit defective 120
Pam control part s defective 120
Remote controller display 120
Short circuit inside the fan motor winding 120
Supply voltage not as specified 120
Supposed causes 120
The system will be shut down if the error occurs 255 times 120
Troubleshooting 120
Electronic expansion valve check 121
How to check 121
Check no 5 122
Four way valve performance check 122
Service diagnosis 111 122
Si04 807 check 122
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 123
Thermistor resistance check 123
Check no 7 124
Check no 8 124
Discharge pressure check 124
Installation condition check 124
Service diagnosis 113 124
Si04 807 check 124
Check no 0 measure the power supply waveform between pins 1 and 2 on the terminal board and check the waveform disturbance 125
Check no 9 125
Check si04 807 125
Check to see if the power supply waveform is a sine wave fig 125
Check to see if there is waveform disturbance near the zero cross sections circled in fig 125
Fig fig 125
Outdoor unit fan system check with dc motor 125
Power supply waveforms check 125
Service diagnosis 125
Check no 1 126
Check no 3 126
Disconnect the compressor harness connector from the outdoor unit pcb to disengage the connector press the protrusion on the connector then follow the procedure below to measure resistance between power transistor and and the u v and w terminals of the compressor connector with a multi tester evaluate the measurement results for a pass fail judgment 126
Inverter units refrigerant system check 126
Note check to make sure that the voltage between the terminal of power transistor and is approx 0 volt before checking power transistor 126
Power transistor check 126
1 make sure the control voltage of dc15v is being applied 2 make a turn of the fan motor with hand and make sure the pulse 0 15v appears 4 times at pins 10 and 13 127
Check no 8 1 check the connector for connection 2 check the motor power voltage is generated between pins 2 and 3 127
Check si04 807 127
Indoor pcb output check 127
Propeller fan motor s70 127
Service diagnosis 127
Turning speed pulse input on the outdoor unit pcb check 127
Between pins 9 and 7 and between 7 and 5 128
Check no 0 1 check the connector for connection 2 turn the power off 3 check if each resistance at the phases u v and w is between 1 128
Check no 9 1 check the connector for connection 2 turn the power on and stop the operation 3 check if the rotation pulse is input 4 times when the fan motor is manually rotated once between pins 1 and 3 128
Fan motor wire short circuit check 128
Service diagnosis 117 128
Si04 807 check 128
Turning speed pulse on the indoor unit pcb check 128
Indoor unit 20 130
Outdoor unit 41 130
Part 7 removal procedure 130
Indoor unit 131
Removal of air filter 131
Removal of front panel 133
Removal of front grille 134
Removal of horizontal blades and safety net 136
Removal of electrical box vertical blade 138
Removal of pcb swing motor 141
Disconnect the connector 143
Remove the screw of the swing motor 143
Removing the swing motor 143
Removal of heat exchanger 145
Removal of fan rotor 148
Exchange of drain hose 151
Outdoor unit 152
Removal of panels 152
Removal of fan motor propeller fan 154
Removal of pcb 155
Removal of sound blanket 162
Removal of four way valve 164
Removal of compressor 167
Others 58 168
Part 8 others 168
Others 169
Test run from the remote controller 169
Control pcb of the indoor unit 1 remove the front grille 2 screws 2 remove the service cover 1 screw 3 remove the drip proof plate 3 tabs 4 cut the address jumper ja on the control pcb 170
How to set the different addresses 170
Jumper setting 170
Jumper settings 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 1 slide the front cover and take it off 2 cut the address jumper j4 170
Application of silicon grease to a power transistor and a diode bridge 171
Not applied paper wastage 171
Ok evenly applied silicon grease ng not evenly applied ng foreign object 171
Power transistor trm tpm igbt ipm spm etc 171
Take out a pcb diode bridge diode bridge rectifier stack etc 171
Part 9 appendix 172
Piping diagrams 62 172
Wiring diagrams 65 172
Cooling only 173
Ftk20 25 35gv1b 173
Ftx20 25 35gv1b atx20 25 35gv1b 173
Heat pump 173
Indoor units 173
Piping diagrams 173
Appendix 163 174
Cooling only 174
Outdoor units 174
Rk20 25gv1b 174
Rk35gv1b 174
Si04 807 piping diagrams 174
Appendix 175
Heat pump 175
Piping diagrams si04 807 175
Rx20 25gv1b arx20 25gv1b 175
Rx35gv1b arx35gv1b 175
Appendix 165 176
Ftk20 25 35gv1b ftx20 25 35gv1b atx20 25 35gv1b 176
Indoor units 176
Outdoor units 176
Rk20 25 35gv1b rx20 25 35gv1b arx20 25 35gv1b 176
Si04 807 wiring diagrams 176
Wiring diagrams 176
Numerics 178
Drawings flow charts 182

Daikin RK35GV1B [2/184] Cooling only indoor units

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