![Daikin CTXG50EV1BS [332/393] Malfunction of low pressure sensor](/img/pdf.png)
Daikin CTXG50EV1BS [332/393] Malfunction of low pressure sensor
![Daikin CTXG50EV1BS [332/393] Malfunction of low pressure sensor](/views2/1775058/page332/bg14c.png)
SiBE18-821 Troubleshooting for Outdoor Unit
Troubleshooting 319
7.16 Malfunction of Low Pressure Sensor
Remote
Controller
Display
JC
Applicable
Models
AII outdoor unit models
Method of
Malfunction
Detection
Malfunction is detected from pressure detected by low pressure sensor.
Malfunction
Decision
Conditions
When the low pressure sensor is short circuit or open circuit.
Supposed
Causes
Defect of low pressure sensor
Connection of high pressure sensor with wrong connection.
Defect of outdoor unit PCB.
Troubleshooting
∗
1: Voltage measurement point
∗
2: Refer to “Pressure Sensor”, pressure/voltage characteristics table on P351.
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
The
low pressure
sensor is connected to
X18A (blue) of outdoor
unit PC board
(A1P).
The
relationship
between the ∗1 VL
and low pressure is
normal (see ∗2) when voltage is
measured between X18A pins
(2) and (3) of outdoor unit
PC board (A1P)
(see ∗1).
Replace the low pressure
sensor.
(Q0565)
Connect low pressure
sensor property and
restart system.
NO
Replace outdoor unit PC
board (A1P).
YES
YES
NO
Содержание
- E series 1
- Sibe18 821 1
- Heat pump indoor unit 2
- Outdoor unit 2
- Super multi plus e series 2
- Table of contents 2
- Functional parts layout 1 3
- Introduction vii 3
- List of functions 3
- Operation mode 8 2 basic control 9 3
- Part 1 list of functions 3
- Part 2 specifications 3
- Part 3 printed circuit board connector wiring diagram 1 3
- Part 4 refrigerant circuit 7 3
- Part 5 function 7 3
- Printed circuit board connector wiring diagram 2 3
- Refrigerant circuit 8 3
- Refrigerant flow for each operation mode 2 3
- Special control 5 3
- Specifications 0 3
- Bp unit control 8 4
- Field setting for skyair indoor unit 52 4
- Indoor unit ra models 3 4
- Indoor unit skyair models 00 4
- Other control 7 4
- Outdoor unit pcb layout 32 3 field setting 33 4
- Part 6 test operation 15 4
- Protection control 1 4
- Test operation 16 4
- Caution for diagnosis 43 5
- Instruction 71 5
- List of malfunction code 62 4 troubleshooting for ra indoor unit 65 5
- Part 7 operation manual 69 5
- Part 8 troubleshooting 41 5
- Service check function 47 5
- System configuration 70 5
- Test operation and field setting for ra indoor unit 66 5
- Troubleshooting for skyair indoor unit 75 5
- Troubleshooting for bp unit 94 6
- Troubleshooting for outdoor unit 01 6
- Check 46 9 thermistor resistance temperature characteristics 49 10 pressure sensor 51 11 method of replacing the inverter s power transistors modules 52 7
- Drawings flow charts vii 7
- Index i 7
- Part 9 appendix 55 7
- Piping diagrams 56 7
- Wiring diagrams 63 7
- Cautions regarding safety of workers 8
- Introduction 8
- Safety cautions 8
- Warning 8
- Caution 9
- Warning 9
- Cautions regarding safety of users 10
- Warning 10
- Caution 11
- Warning 11
- Caution 12
- Icons are used to attract the attention of the reader to specific information the meaning of each icon is described in the table below 12
- Used icons 12
- List of functions 14
- Part 1 list of functions 14
- Holding functions no functions 15
- List of functions 15
- List of functions sibe18 821 15
- List of functions 3 16
- Sibe18 821 list of functions 16
- Holding functions no functions 17
- List of functions 17
- List of functions sibe18 821 17
- List of functions 5 18
- Sibe18 821 list of functions 18
- Holding functions no functions 19
- List of functions 19
- List of functions sibe18 821 19
- Holding functions no functions 20
- List of functions 7 20
- Sibe18 821 list of functions 20
- Part 2 specifications 22
- Specifications 0 22
- Hz 230v 23
- Outdoor units 23
- Specifications 23
- Specifications sibe18 821 23
- Bp unit 24
- Hz 230v 24
- Sibe18 821 specifications 24
- Specifications 11 24
- Hz 230v 25
- Indoor units 25
- Specifications 25
- Specifications sibe18 821 25
- Wall mounted type 25
- Hz 230v 26
- Sibe18 821 specifications 26
- Specifications 13 26
- Hz 230v 27
- Specifications 27
- Specifications sibe18 821 27
- Hz 230v 28
- Sibe18 821 specifications 28
- Specifications 15 28
- Duct connected type 29
- Hz 230v 29
- Specifications 29
- Specifications sibe18 821 29
- Floor ceiling suspended dual type 50hz 230v 30
- Sibe18 821 specifications 30
- Specifications 17 30
- Floor standing type 31
- Hz 230v 31
- Specifications 31
- Specifications sibe18 821 31
- Ceiling mounted cassette type 32
- Hz 230v 32
- Sibe18 821 specifications 32
- Specifications 19 32
- Ceiling suspended type 33
- Hz 230v 33
- Specifications 33
- Specifications sibe18 821 33
- Part 3 printed circuit board connector wiring diagram 34
- Main pcb a1p 35
- Outdoor unit rmxs 112 140 160 e8v1b 35
- Printed circuit board connector wiring diagram 35
- Pcb detail main pcb a1p 36
- Printed circuit board connector wiring diagram 23 36
- Sibe18 821 printed circuit board connector wiring diagram 36
- Service pcb a2p 37
- Noise filter pcb a3p 38
- Cool heat selector pcb a4p 39
- Branch provider unit 40
- Ftxg25 35e ctxg50e 41
- Pcb 2 signal receiver pcb 42
- Pcb 3 intelligent eye sensor pcb 42
- Pcb detail pcb 1 control pcb indoor unit 42
- Printed circuit board connector wiring diagram 29 42
- Sibe18 821 printed circuit board connector wiring diagram 42
- Wall mounted type 20 50 class g series 43
- Pcb 2 signal receiver pcb pcb 3 display pcb 44
- Pcb 4 intelligent eye sensor pcb 44
- Pcb detail pcb 1 control pcb 44
- Printed circuit board connector wiring diagram 31 44
- Sibe18 821 printed circuit board connector wiring diagram 44
- Wall mounted type 60 71 class f series 45
- Pcb 2 signal receiver pcb pcb 3 buzzer pcb 46
- Pcb 4 display pcb pcb 5 intelligent eye sensor pcb 46
- Pcb detail pcb 1 control pcb indoor unit 46
- Printed circuit board connector wiring diagram 33 46
- Sibe18 821 printed circuit board connector wiring diagram 46
- Duct connected type 47
- Pcb detail pcb 2 display pcb 48
- Printed circuit board connector wiring diagram 35 48
- Sibe18 821 printed circuit board connector wiring diagram 48
- Floor ceiling suspended dual type 49
- Pcb 3 display pcb 51
- Pcb 4 signal receiver pcb 51
- Printed circuit board connector wiring diagram 51
- Printed circuit board connector wiring diagram sibe18 821 51
- Floor standing type 52
- Pcb detail pcb 1 power supply pcb 53
- Ceiling mounted cassette 600 600 type 55
- Ec0608 a 56
- Pcb detail pcb 1 control pcb a1p 56
- Printed circuit board connector wiring diagram 43 56
- Sibe18 821 printed circuit board connector wiring diagram 56
- Ceiling suspended type 57
- Ec0606 a 58
- Pcb detail control pcb a1p 58
- Printed circuit board connector wiring diagram 45 58
- Sibe18 821 printed circuit board connector wiring diagram 58
- Functional parts layout 1 60
- Part 4 60
- Part 4 refrigerant circuit 60
- Refrigerant circuit 60
- Refrigerant circuit 8 60
- Refrigerant flow for each operation mode 2 60
- Outdoor units 61
- Refrigerant circuit 61
- Refrigerant circuit sibe18 821 61
- Bp units 63
- Ra indoor unit 63
- Refrigerant circuit 63
- Refrigerant circuit sibe18 821 63
- Sa indoor unit 63
- To outdoor unit 63
- Birds eye view 64
- Functional parts layout 64
- Outdoor units 64
- Accumulator 65
- Capillary tube 65
- Capillary tube solenoid valve 65
- Compressor 65
- Cooling operation 65
- Double pipe heat exchanger 65
- Electronic expansion valve 65
- Ev1 480 pls ev3 pi control svp off 65
- Filter 65
- Four way valve 65
- Heat exchanger 65
- High pressure sensor 65
- High pressure switch 65
- Liquid line 65
- Low pressure sensor 65
- Pressure regulating valve 65
- Refrigerant circuit 65
- Refrigerant flow for each operation mode 65
- Refrigerant flow for each operation mode sibe18 821 65
- Service port 65
- Solenoid valve 65
- Stop valve 65
- Stop valve gas line 65
- Compressor 66
- Double pipe heat exchanger 66
- Ev1 pi control ev3 pi control svp off 66
- Heating operation 66
- High pressure liquid refrigerant high pressure high temp gas refrigerant low pressure low temp liquid or gas refrigerant 66
- High pressure sensor 66
- Refrigerant circuit 53 66
- Sibe18 821 refrigerant flow for each operation mode 66
- Solenoid valve 66
- Compressor 67
- Cooling oil return operation 67
- Double pipe heat exchanger 67
- Ev1 480 pls ev2 full close svp off 67
- High pressure liquid refrigerant high pressure high temp gas refrigerant low pressure low temp liquid or gas refrigerant 67
- Refrigerant circuit 67
- Refrigerant flow for each operation mode sibe18 821 67
- Accumulator 68
- Capillary tube 68
- Capillary tube solenoid valve 68
- Compressor 68
- Double pipe heat exchanger 68
- Electronic expansion valve 68
- Ev1 480 pls ev2 55 pls svp off 68
- Filter 68
- Four way valve 68
- Heat exchanger 68
- Heating oil return operation defrost operation 68
- High pressure liquid refrigerant high pressure high temp gas refrigerant low pressure low temp liquid or gas refrigerant 68
- High pressure sensor 68
- High pressure switch 68
- Liquid line 68
- Low pressure sensor 68
- Pressure regulating valve 68
- Refrigerant circuit 55 68
- Service port 68
- Sibe18 821 refrigerant flow for each operation mode 68
- Solenoid valve 68
- Stop valve 68
- Bp unit control 8 70
- Function 70
- Indoor unit ra models 3 70
- Indoor unit skyair models 00 70
- Operation mode 8 2 basic control 9 70
- Other control 7 70
- Part 5 70
- Part 5 function 70
- Protection control 1 70
- Special control 5 70
- Function 71
- In the event indoor unit stops or the thermostat turns off while in oil return operation or defrosting operation pump down residual operation is performed on completion of the oil return operation or defrosting operation 71
- Indoor unit stop or thermostat off 71
- Indoor unit thermostat on 71
- Malfunction standby 71
- Operation mode 71
- Operation mode sibe18 821 71
- Pump down residual operation 71
- Basic control 72
- Cdb or more 72
- Heating operation is not functional at an outdoor air temperature of 2 72
- Normal operation 72
- Compressor pi control 73
- D signal in heating 75
- Heating operation tcs tcs initial value ktc2 ktc2 correction value by 75
- Electronic expansion valve pi control 76
- Main electronic expansion valve ev1 control carries out the electronic expansion valve y1e pi control to maintain the evaporator outlet superheated degree sh at constant during heating operation to make maximum use of the outdoor unit heat exchanger evaporator 76
- Of the outlet gas pipe on the evaporator side for the full use of the subcooling heat exchanger 76
- Subcooling electronic expansion valve ev3 control makes pi control of the electronic expansion valve y3e to keep the superheated degree 76
- The optimum initial value of the evaporator outlet superheated degree is 3 c but varies depending on the discharge pipe superheated degree of inverter compressor 76
- C it will run in step 1 or higher 77
- C it will run in step 5 or higher when outdoor temperature 77
- C the compressor will run in step 7 or higher when outdoor temperature 77
- Cooling operation fan control 77
- Fan steps 77
- In cooling operation with low outdoor air temperature this control is used to provide the adequate amount of circulation air with liquid pressure secured by high pressure control using outdoor unit fan furthermore when outdoor temperature 77
- Special control 78
- Startup control 78
- Startup control in cooling operation 78
- Startup control in heating operation 78
- This control is used to equalize the pressure in the front and back of the compressor prior to the startup of the compressor thus reducing startup loads furthermore the inverter is turned on to charge the capacitor in addition to avoid stresses to the compressor due to oil return or else after the startup the following control is made and the position of the four way valve is also determined to position the four way valve the master and slave units simultaneously start up 78
- Conditions to start the cooling oil returning operation is started referring following conditions 79
- Integrated amount of displaced oil 79
- Oil flown from the compressor to the side of system is collected by oil returning operation in case of that oil in the compressor runs down 79
- Oil return operation 79
- Oil return operation in cooling operation 79
- Timer after the power is turned on integrated operating time is 2 hours and subsequently every 8 hours in addition integrated amount of displaced oil is derived from tc te and the compressor load 79
- Conditions to start the heating oil returning operation is started referring following conditions 80
- From the preparing oil returning operation to the oil returning operation and from the oil returning operation to the operation after oil returning the compressor stops for 2 minute to reduce noise on changing of the four way valve 80
- Integrated amount of displaced oil 80
- Oil return operation in heating operation 80
- Timer after the power is turned on integrated operating time is 2 hours and subsequently every 8 hours in addition integrated amount of displaced oil is derived from tc te and the compressor load 80
- Defrosting operation 81
- From the preparing operation to the defrost operation and from the defrost operation to the operation after defrost the compressor stops for 2 min to reduce noise on changing of the four way valve 81
- Low pressure equivalent saturation temperature te 81
- Outdoor heat exchanger heat transfer co efficiency 81
- Temperature of heat exchange tb 81
- The defrost operation is performed to solve frost on the outdoor unit heat exchanger when heating and the heating capacity is recovered conditions to start the defrost operation is started referring following conditions 81
- Timer 2 hours at the minimum in addition outdoor heat exchange co efficiency is derived from tc te and the compressor load 81
- Pump down residual operation 82
- Pump down residual operation in cooling operation 82
- Pump down residual operation in heating operation 82
- Restart is stood by force to prevent frequent power on off and to equalize pressure in the refrigerant system 82
- Restart standby 82
- When activating compressor if the liquid refrigerant remains in the heat exchanger the liquid enters into the compressor and dilutes oil therein resulting in decrease of lubricity therefore the pump down residual operation is performed to collect the refrigerant in the heat exchanger when the compressor is down 82
- Operation of the actuator when the system is down is cleared up 83
- Stopping operation 83
- When system is in stop mode 83
- Function 71 84
- High pressure protection control 84
- In cooling operation 84
- In heating operation 84
- Protection control 84
- Sibe18 821 protection control 84
- This high pressure protection control is used to prevent the activation of protection devices due to abnormal increase of high pressure and to protect compressors against the transient increase of high pressure 84
- In cooling operation 85
- In heating operation 85
- Low pressure protection control 85
- This low pressure protection control is used to protect compressors against the transient decrease of low pressure 85
- Discharge pipe protection control 86
- Inv compressor 86
- This discharge pipe protection control is used to protect the compressor internal temperature against a malfunction or transient increase of discharge pipe temperature 86
- Fin temp standby 87
- Inv upper limit frequency max hz 87
- Inverter current protection control and inverter fin temperature control are performed to prevent tripping due to a malfunction or transient inverter overcurrent and fin temperature increase 87
- Inverter fin temperature control 87
- Inverter overcurrent protection control 87
- Inverter protection control 87
- Limited 87
- Not limited 87
- Tfin 75 c 87
- Tfin 75 c continues for 3 min 87
- Tfin 78 c 87
- Tfin 83 c 87
- When occurring 4 times within 60 min the malfunction code l4 is output 87
- Freeze up protection control 88
- Dew condensation prevention control 89
- Demand 1 setting 90
- Demand operation 90
- Heating operation is prohibited above 24 cdb outdoor air temperature 90
- Heating operation prohibition 90
- In order to save the power consumption the capacity of outdoor unit is saved with control forcibly by using demand 1 setting to operate the unit with this mode additional setting of continuous demand setting or external input by external control adaptor is required 90
- Other control 90
- Bp unit command conversion 91
- Bp unit control 91
- D room temperature 91
- D signals from bp units are used as the capacity up down signal in frequency commands excludes when powerful function is in operation 91
- Processing during powerful operation mode 1 when powerful command is received from indoor units one or more units 2 thermostats are not off in room units from which powerful commands are issued 91
- Temperature setting signals from bp units are converted to capacity up down signal 91
- When the above conditions are met the powerful operation mode is activated and the powerful operation signal is sent to outdoor unit 91
- Bp unit electronic expansion valve control 92
- Electronic expansion valve flow rate restriction 92
- Electronic expansion valve initial opening setting 92
- Control based on ev opening command from outdoor unit 93
- Full closing of electronic expansion valves 93
- Closes the valve of that room unit 94
- Gas pipe lower limit temperature doa 17 however 8ºc or lower doa outdoor air temperature 94
- In order to prevent dew condensation in connection pipe gas pipe lower limit temperature is set as follows 94
- Opens the valve of that room unit when sh is lower than target value 94
- Outline the heat exchanger temperatures and gas pipe temperatures of operating room units are detected by the gas pipe thermistors and the electronic expansion valves flow rates are corrected so as to adjust the difference between heat exchanger temperature and gas pipe temperature of each room unit hereafter referred to as sh close to the target values 94
- Purpose of the function this function ensures appropriate refrigerant distribution when many room units are operating in the cooling mode 94
- Sh control in cooling operation 94
- The gas pipe temperature and indoor heat exchanger temperature are detected at the time of every sampling time of 40 sec for the cooling sh control 94
- When sh is higher than target value 94
- When the liquid pipe temperature is lower than the heat exchanger temperature the electronic expansion valve is opened more than normal opening protection function to prevent rotor dew condensation 94
- Heat exchanger isothermal control in heating operation 95
- Sc control in heating operation 95
- Indoor unit ra models 96
- Power airflow dual flaps wide angle louvers and auto swing 96
- Automatic airflow control for cooling 98
- Automatic airflow control for heating 98
- 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 98
- Fan speed control for indoor units 98
- For more information about hall ic refer to the troubleshooting for fan motor on page 268 98
- Note 1 fan stops during defrost operation 2 in time of thermostat off the fan rotates at the following speed cooling the fan keeps rotating at the set tap heating the fan keeps rotating at lll tap ftxs fvxs series or stops the other models 98
- On heating mode the indoor fan speed will be regulated according to the indoor heat exchanger temperature and the difference between the room temperature and the required set point 98
- Phase steps phase control and fan speed control contains 9 steps lll ll sl l ml m mh h and hh in automatic operation the step sl is not available 98
- The following drawing explains the principle of fan speed control for cooling 98
- Within this range the airflow rate is automatically controlled when the fan setting button is set to automatic 98
- 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 99
- Programme dry function 99
- 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 99
- Zone a thermostat off 99
- Zone b zone b 99
- Zone c thermostat on 99
- Automatic operation 100
- Cooling dry 101
- Duct connected type 101
- Floor ceiling suspended type 101
- Floor standing type 101
- Function 101
- Heating 101
- Indoor unit ra models sibe18 821 101
- The monitoring time has passed while the temperature difference is in the zone b cooling dry 10 minutes heating 10 seconds 101
- The operation turns on in any zones except a 101
- The system resumes from defrost control in any zones except a 101
- The temperature difference is above the zone c after being in the zone a 101
- The temperature difference is in the zone a 101
- Thermostat control 101
- Thermostat control is based on the difference between the room temperature and the setpoint 101
- Thermostat off condition 101
- Thermostat on condition 101
- Wall mounted type 101
- Night set mode 102
- Econo mode 103
- 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 200msec it judges human is in the room as the motion signal is on 104
- Function 91 104
- In case of fan mode the fan speed reduces by 50 rpm 104
- Intelligent eye ftxs f 104
- Processing 1 detection method by intelligent eye 104
- Sibe18 821 indoor unit ra models 104
- The motions for example in cooling 104
- 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 104
- This sensor detects human motion by receiving infrared rays and displays the pulse wave output 104
- When a microcomputer doesn t have a signal from the sensor in 20 minutes it judges that nobody is in the room and operates the unit in temperature shifted 2 c from the set temperature cooling dry 2 c higher heating 2 c lower and auto according to the operation mode at that time 104
- 2 area intelligent eye ftxs g 106
- 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 200msec and when the on signal continues 3 sec it judges human is in the room as the motion signal is on 106
- Function 93 106
- Intelligent eye sensor is divided into 2 areas and detects humans in each area 106
- Processing 1 detection method by intelligent eye 106
- Sibe18 821 indoor unit ra models 106
- The following functions can be performed by a human motion sensor intelligent eye 1 reduces the capacity when there is no human in the room in order to save electricity energy saving operation 2 divides the room into plural areas and detects existence of humans in each area shifts the airflow direction to the area having no human automatically to avoid direct airflow on humans 106
- This sensor detects human motion by receiving infrared rays and displays the pulse wave output 106
- Airflow direction in 2 area intelligent eye operation 107
- Area a area b 107
- Detection method the opposite area of detected area is set as the target direction 107
- Detection signal on in both area a and b shift the airflow direction to area b left side 2 detection signal on in area a shift the airflow direction to area b left side 3 detection signal on in area b shift the airflow direction to area a right side 4 detection signal off in both area a and b no change 107
- Function 107
- In case of fan mode the fan speed reduces by 60 rpm 107
- Indoor unit 107
- Indoor unit ra models sibe18 821 107
- Left right 107
- Others the dry operation can t command the setting temperature with a remote controller but internally the set temperature is shifted by 1 c 107
- The motions in energy saving operation for example in cooling 107
- Top view 107
- When a microcomputer doesn t have a signal from the sensor in 20 minutes it judges that nobody is in the room and operates the unit in temperature shifted 2 c from the set temperature cooling dry 2 c higher heating 2 c lower and auto according to the operation mode at that time 107
- When the detection signal off in both area a and b the unit starts energy saving operation 107
- Home leave operation 108
- Others the set temperature and set air volume are memorized in the remote controller when the remote controller is reset due to replacement of battery it is necessary to set the temperature and air volume again for home leave 109
- 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 in case of ftxs20 50g 110
- Ex powerful operation in cooling mode 110
- Inverter powerful operation 110
- 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 110
- Hot start function 111
- On off button on indoor unit 111
- Other functions 111
- Signal receiving sign 111
- Titanium apatite photocatalytic air purifying filter 111
- Air purifying filter 112
- Auto restart function 112
- Mold proof air filter prefilter 112
- Photocatalytic deodorizing filter 112
- Self diagnosis digital display 112
- Weekly timer operation 112
- Ffq b fhq b 113
- Function 113
- Function outline 113
- Indoor unit skyair models 113
- Indoor unit skyair models sibe18 821 113
- Electric function parts 114
- Ffq b8v1b 114
- Fhq bvv1b 114
- Function details 115
- 2 operations when an occurrence of water level abnormality 1 2 a behavior between occurrence and recovery of water level abnormality 117
- Compressor 117
- Drain pan 117
- Drain pump 117
- Error processing 117
- Intermittent operation 1 5min 5min 117
- Occurrence of drain water level abnormality 117
- According to suction air temp 123
- Auto restart function 123
- Caution when performing maintenance and the power supply is to be shut off be sure to turn the remote controller s on off switch off first 123
- If there is a power cut when the unit is operating it will automatically resume the same operating mode when the power is restored 123
- Operation condition 123
- Program dry operation function 123
- Shutting the power supply switch off while the on off switch is still on is dangerous because the power failure automatic reset function will cause the indoor fan to start turning immediately or the outdoor unit fan to automatically start turning 3 minutes after the power supply is turned back on 123
- The points of thermostat on or off are determined according to the suction air temperature at the startup of unit operation the set temperature and flow rate are not displayed on remote controller 123
- Thermostat on point 123
- Fan and flap operations 124
- L or ll operation for ffq only l for 4 way outlet and ll for 2 way or 3 way outlet 124
- Mode conflict overview while the indoor unit for another room and the outdoor unit are operating when the indoor unit for the own room is activated the operation mode which can be selected in the own room has some restrictions as mentioned below i in case an priority for operation mode selection is given to the own room by setting the dip switch of outdoor unit 125
- Note during automatic operation at the time of changing operation mode to automatic cooling or automatic heating the unit is operated as the table shown above 125
- Operation of the indoor unit for the own room during non operation fan off louver becomes horizontal position on led on the remote controller blinks indication of under central control on the remote controller displayed 125
- Operational 125
- The own room can be operated in any mode ii in case an priority for operation mode selection is not given to the own room by setting the dip switch of outdoor unit 125
- The unit can be operated as follows 125
- The unit for another room is switched into non operational condition non operational 125
- Field setting for skyair indoor unit 52 128
- Outdoor unit pcb layout 32 3 field setting 33 128
- Part 6 128
- Part 6 test operation 128
- Test operation 128
- Test operation 16 128
- Test operation and field setting for ra indoor unit 66 128
- Check work prior to turn power supply on 129
- Follow the following procedure to conduct the initial test operation after installation 129
- Procedure and outline 129
- Test operation 129
- Turn power on 129
- Address redundancy checking flowchart 130
- Judging and reprogramming in case of redundant bp addresses 130
- Modify the dip switch ds2 settings on the bp unit s pcb in the following way 130
- Reprogramming the pcb addresses of bp unit 130
- Sibe18 821 test operation 130
- Test operation 117 130
- The bp unit of this system is provided with specific addresses in its production stage these addresses are used to conduct various controls if by any chance on 3 out of 260000 units these addresses are redundant the system may get in trouble when replacing the pcb of the bp unit too these addresses may be used repeatedly 130
- Ds1 4 factory setting is off the bp unit 1 through 3 show the first through third unit respectively the order of these units is flexible the above table is just for your reference the redundancy of addresses can be avoided when the dip switch settings are individually specified with the dip switch settings reprogrammed power on the outdoor unit and bp unit again check for address redundancy 131
- Example of dip switch ds2 settings on the bp unit s pcb 131
- Note if an error display appears on the indoor unit bp unit or outdoor unit follow its code and description 131
- Tap the reset bs5 button on the outdoor unit pc board operation becomes possible for about 2 minutes if not the unit cannot be run for up to 10 minutes status 131
- The unit cannot be run for up to 12 minutes to automatically set address indoor outdoor address etc status 131
- When turning on power first time 131
- When turning on power the second time and subsequent 131
- Air tight test and vacuum drying 132
- When the no of indoor unit has been changed or indoor bp or outdoor unit pc board has been changed or the system is transferred 132
- Additional refrigerant charge 133
- Automatic refrigerant charging procedure 1 open the liquid and gas side stop valves completely 136
- Caution note that valve a must be closed 136
- H h i h h h h 136
- If h2p is lit up check the type of error based on the error code in the remote controller and correct the error in accordance with test operation see page 130 136
- Led state throughout the manual the state of the leds is indicated as follows 136
- Make sure that the led on the pcb on the outdoor unit are as shown in the table below this indicates that the system is operating normally 136
- Note when an indoor unit is connected to the refrigerant system and the indoor unit is turned off automatic charging will fail 136
- Sibe18 821 test operation 136
- Test operation 123 136
- Turn on the power of the outdoor unit and indoor units 136
- Automatically charge the refrigerant according to the procedure described below 137
- H j h h h 137
- I i i i i i i 137
- I j j j h i h 137
- I j j j i h h 137
- I j j j j h i 137
- If the led display below appears check the indoor unit connection capacity 137
- If the led display below appears the automatic refrigerant charging restriction has been exceeded additional refrigerant must be charged by calculating the additional refrigerant charging amount 137
- If the led display below appears the liquid and gas side stop valves may be closed 137
- Press bs4 test for 5 seconds the unit will start running 137
- Press bs4 test once 137
- Test operation 137
- Test operation sibe18 821 137
- Warning do not touch anything else than the push buttons bs1 5 on the pcb when making the settings these settings must be done with the power on 137
- I j j h h i h 138
- J j j h i h i 138
- J j j i i i i 138
- Note if the led display below appears the refrigerant tank is empty replace the refrigerant tank open valve a and re charge 138
- Note if you want to repeat the automatic refrigerant charging operation from step 4 fully open the liquid and gas side stop valves and press the bs1 mode button once 138
- Note it is possible that the code pe is not shown on the remote controller but this does not indicate a malfunction the led indication can immediately shift to the situation as shown in case 1 charging complete on page 126 138
- Sibe18 821 test operation 138
- Test operation 125 138
- The led indication becomes as shown in the table below during automatic refrigerant charging during automatic refrigerant charging the remote controller indicates test test operation and external control 138
- The led indication becomes as shown in the table below when automatic refrigerant charging is about to end prepare to close the valve on the refrigerant tank 138
- When the led indication becomes as shown in the table below in about 15 to 30 minutes after start of operation open valve a at once to start charging of the refrigerant immediately after starting charging of the refrigerant by opening valve a press bs4 test once when bs4 test is not pressed within 10 minutes after the led indication is shown charging is stopped 138
- When the led indication becomes as shown in the table below quickly close valve a and follow instructions as described below 138
- After correcting the problem press bs1 mode button once and perform automatic refrigerant charging again starting from step 4 139
- An error in the system interrupted the operation of the unit check the error by using the error code displayed on the remote controller for an explanation of the error codes see the chart below 139
- Are the valve on the refrigerant tank and valve a open check if the bs4 test button was pressed within 10 minutes after the valves were opened 139
- Case 1 charging complete 139
- Case 2 recharging operation 139
- Case 3 charging interrupted 139
- Case 4 failure 139
- Caution 139
- Charging of the refrigerant is complete press bs1 mode button once and go to step 5 139
- H i i h h h h 139
- I j j h h h i 139
- I j j h i i i 139
- I j j i i i i 139
- Is the gas side stop valve completely open 139
- Is the indoor unit air intake vent or outlet vent blocked 139
- Press bs1 mode button once and perform automatic refrigerant charging again starting from step 4 139
- Something is preventing normal operation 139
- Test operation 139
- Test operation sibe18 821 139
- The outdoor fan may keep rotating a little bit more but this does not indicate a malfunction 139
- When adding refrigerant is done or when pausing close the valve on the refrigerant tank immediately more refrigerant might be charged by any remaining pressure after the machine is stopped 139
- After correcting the problem press bs1 mode button once and perform automatic refrigerant charging again starting from step 4 140
- Error codes on the remote controller 140
- Sibe18 821 test operation 140
- Test operation 127 140
- Check on operation 143
- Check operation 143
- Check the indoor unit remote controller for abnormal display and correct it 143
- During check operation mount front panel to avoid the misjudging check operation is mandatory for normal unit operation when the check operation is not executed alarm code u3 will be displayed 143
- Malfunction code in case of an alarm code displayed on remote controller 143
- On completion of test operation led on outdoor unit pc board displays the following h3p on normal completion h2p on abnormal completion 143
- Only for skyair 143
- Press and hold the test operation button bs4 on outdoor unit pc board for 5 seconds 143
- The test operation is started automatically the following judgements are conducted within 15 minutes about 30 minutes at the maximum 2 check for wrong wiring 2 check stop valve for not open 2 check for refrigerant charge the following indications are conducted while in test operation 2 led lamp on outdoor unit pc board h2p blinks test operation 2 remote controller indicates during centralized control on upper right indicates test operation on lower left 143
- Confirmation on normal operation 144
- Caution cover electric parts with an insulating sheet during inspection to prevent electric shock 145
- Outdoor unit pcb 145
- Outdoor unit pcb layout 145
- A4p a2p 146
- Field setting 146
- Field setting from outdoor unit 146
- Setting by dip switches 146
- Capacity setting adapter 147
- Caution 147
- Dip switch setting after changing the main pcb a1p to spare parts pcb when you change the main pcb a1p to spare parts pcb please carry out the following setting 147
- Field setting sibe18 821 147
- Please attach the capacity setting adapter corresponding to capacity class ex 112 140 160 in connector x51a see below 147
- Test operation 147
- 7 8 7 7 7 7 148
- Factory setting 148
- H1p h2p h3p h4p h5p h6p h7p 148
- Led indication 148
- Mode changing procedure 148
- Monitor mode h1p blinks used to check the program made in setting mode 2 148
- Setting by pushbutton switches the following settings are made by pushbutton switches on pcb 148
- Setting mode 1 h1p off initial status when normal also indicates during abnormal 148
- Setting mode 2 h1p on used to modify the operating status and to set program addresses etc usually used in servicing the system 148
- Sibe18 821 field setting 148
- Test operation 135 148
- There are the following three setting modes 148
- A setting mode 1 149
- 7 8 7 7 7 7 150
- Procedure for changing cool heat selection setting 150
- Sibe18 821 field setting 150
- Test operation 137 150
- B setting mode 2 151
- 7 7 7 7 7 154
- 7 7 7 7 8 154
- 7 7 7 7 9 154
- 7 7 7 8 7 154
- 7 7 7 8 8 154
- 7 7 7 9 7 154
- 7 7 8 7 7 154
- 7 7 8 7 8 154
- 7 7 8 8 8 154
- 7 7 9 7 7 154
- 7 8 7 7 7 154
- 7 8 7 8 8 154
- 7 8 8 7 7 154
- 7 8 8 7 8 154
- 7 8 8 8 7 154
- 7 8 8 8 8 154
- 8 7 7 7 7 154
- 8 7 8 7 7 154
- 8 7 8 7 8 154
- 8 7 8 8 7 154
- 8 8 7 7 8 154
- Abnormal 154
- C monitor mode 154
- Defrost select setting short 154
- Emg operation backup operation setting 154
- Setting item 0 display contents of various setting 154
- Sibe18 821 field setting 154
- Tc setting h 154
- Te setting h 154
- Test operation 141 154
- The numbers in the no column represent the number of times to press the set bs2 button 154
- Cool heat mode switching 156
- Detail of setting mode 156
- For the details refer to the installation manual supplied together with the indoor unit 157
- In the case of wired remote controllers 157
- In the case of wireless remote controllers 157
- It does not matter whether or not there is outdoor outdoor unit wiring 157
- Set cool heat separately for each outdoor unit system by cool heat switching remote controller 157
- Set cool heat switching to ind individual for setting mode 1 factory set 157
- Set outdoor unit pc board ds1 1 to out factory set 157
- Setting of low noise operation and demand operation 158
- Demand mode 1 the compressor operates at approx 60 or less of rating mode 2 the compressor operates at approx 70 or less of rating 159
- Field setting sibe18 821 159
- Image of operation 159
- Mode 3 the compressor operates at approx 80 or less of rating 159
- Set item condition content 159
- Setting of demand operation by connecting the external contact input to the demand input of the outdoor unit external control adapter optional the power consumption of unit operation can be saved suppressing the compressor operating condition 159
- Test operation 159
- When the normal demand operation is carried out use of the external control adapter for outdoor unit is not required 1 while in setting mode 2 make setting of the set item no 32 setting of constant demand to on 2 while in setting mode 2 select the set item no 30 setting of demand 1 level and then set the setting condition to targeted mode 159
- Refrigerant additional charging operation procedure 162
- Service port 162
- Setting of refrigerant additional charging operation 162
- Sibe18 821 field setting 162
- Test operation 149 162
- Setting of refrigerant recovery mode 163
- Setting of vacuuming mode 163
- Check operation 164
- Check operation function 164
- To prevent any trouble in the period of installation at site the system is provided with a test operation mode enabling check for incorrect wiring stop valve left in closed coming out or misplacing with suction pipe thermistor of discharge pipe thermistor and judgment of piping length refrigerant overcharging and learning for the minimum opening degree of electronic expansion valve 164
- Explanation 165
- Field set is carried out from the remote controller at time of installation or after maintenance inspection repair carry out field set according to the explanation below incorrect settings will cause a malfunction to occur the indoor unit settings are sometimes changed if optional accessories are mounted on the indoor unit refer to the optional accessory manual 165
- Field setting for skyair indoor unit 165
- Field setting 166
- Wired remote controller 166
- Field setting for skyair indoor unit sibe18 821 167
- Initial setting contents 167
- Note if optional accessories are mounted on the indoor unit the indoor unit setting may have to be changed refer to the instruction manual optional hand book for each optional accessory 167
- Procedure 1 when in the normal mode push the button for a minimum of four seconds and the field set mode is entered 2 select the desired mode no with the button 3 push the button and select the first code no 4 push the button and select the second code no 5 push the button and the present settings are set 6 push the button to return to the normal mode 167
- Test operation 167
- Wireless remote controller 167
- Example to set the filter sign time to filter contamination heavy for all units in a group set mode no to 10 setting switch no to 0 and setting position no to 02 168
- Local setting mode number 168
- Table fhq ffq 168
- Airflow direction setting ffq 170
- Detailed explanation of setting modes 170
- Filter sign setting ffq fhq 170
- If switching the filter sign on time set as given in the table below set time 170
- Make the following airflow direction setting according to the respective purpose 170
- Range of airflow direction setting ffq 170
- Set the airflow direction of indoor units as given in the table below set when optional air outlet blocking pad has been installed the second code no is factory set to 01 170
- Setting table 170
- By setting to set fan speed you can switch the fan speed to the set fan speed when the heating thermostat is off 171
- Fan speed changeover when thermostat is off ffq fhq 171
- Fan speed off when thermostat is off ffq fhq 171
- Setting table 171
- Since there is concern about draft if using fan speed up when thermostat is off you should take the setup location into consideration 171
- Used as a countermeasure against odor for barber shops and restaurants 171
- When the cool heat thermostat is off you can stop the indoor unit fan by switching the setting to fan off 171
- After completing setting seal off the opening of the address switch and the main sub switch with the attached sealing pad 172
- Explanation if several wireless remote controller units are used together in the same room including the case where both group control and individual remote controller control are used together be sure to set the addresses for the receiver and wireless remote controller for group control see the attached installation manual for the indoor unit if using together with a wired remote controller you have to change the main sub setting or the receiver 172
- Receiver setting set the wireless address switch ss2 on the transmitter board according to the table below 172
- Ss2 ss1 172
- When using both a wired and a wireless remote controller for 1 indoor unit the wired controller should be set to main therefore set the main sub switch ss1 of the transmitter board to sub 172
- Wireless setting address and main sub setting 172
- After setting stick the unit no label at decoration panel air discharge outlet as well as on the back of the wireless remote controller 174
- Multiple settings a b when the indoor is being operating by outside control central remote controller etc it sometimes does not respond to on off and temperature setting commands from this remote controller check what setting the customer wants and make the multiple setting as shown below 174
- Precautions set the unit no of the receiver and the wireless remote controller to be equal if the settings differ the signal from the remote controller cannot be transmitted 174
- Centralized group no setting 175
- Maintenance mode setting 177
- Operation is not reset by malfunction code reset for inspection cannot be reset because the count is updated each time a malfunction occurs 178
- Test operation and field setting for ra indoor unit 179
- Test operation from the remote controller 179
- Control pcb of the indoor unit 1 remove the front grille 2 screws 2 remove the electrical box 1 screw 3 remove the drip proof plate 4 tabs 4 cut the address jumper ja on the control pcb 181
- In case of ftxs20 50g how to set the different addresses 181
- Jumper setting 181
- Jumper settings 181
- When two indoor units are installed in one room the two wireless remote controllers can be set for different addresses 181
- When two units are installed in one room 181
- Wireless remote controller 1 slide the front cover and take it off 2 cut the address jumper j4 181
- Instruction 71 182
- Part 7 operation manual 182
- System configuration 70 182
- Operation instructions 183
- System configuration 183
- Comfort 184
- Instruction 184
- Operating noise 184
- Points the customer should be aware of 184
- Rmxs series 184
- Ftxg e ctxg e ftxs f fdxs c e flk x s b series 185
- Illustrations are for wall mounted type ftxs60 71f as representative 185
- Manual contents and reference page 185
- Ftxg 25 35 e ctxg 50 e 186
- Remote controller 186
- Arc433b70 7 187
- Ftxs 60 71 f 187
- Remote controller 187
- Arc433b69 b76 188
- Fdxs 50 60 c fdxs 25 35 e 188
- Remote controller 188
- Arc433b67 b68 189
- Flxs 25 35 50 60 b 189
- Remote controller 189
- Auto dry cool heat fan operation 190
- To change the temperature setting 190
- To start operation 190
- To stop operation 190
- Press fan setting button 191
- To change the airflow rate setting 191
- Adjusting the airflow direction 192
- To 3 d airflow 192
- To adjust the horizontal blade flap 192
- To adjust the vertical blades louvers 192
- To cancel 3 d airflow 192
- Press comfort airflow button 193
- Press comfort airflow button again 193
- The flap will go down 193
- To cancel comfort airflow operation 193
- To start comfort airflow operation 193
- Adjusting the airflow direction 194
- To adjust the horizontal blade flap 194
- To adjust the vertical blades louvers 194
- Notes on flap angle 195
- Notes on louvers angles 195
- Press either the swing button or the swing button 195
- Press the swing button and the swing button the and display will light up and the flap and louvers will move in turn 195
- To 3 d airflow 195
- To cancel 3 d airflow 195
- Adjusting the airflow direction 196
- Press swing button 196
- To adjust the horizontal blade flap 196
- When the flaps have reached the desired position press swing button once more 196
- Attention 197
- Instruction sibe18 821 197
- Notes on flap and louvers angles 197
- Operation manual 197
- To adjust the vertical blades louvers 197
- Powerful operation 198
- To cancel powerful operation 198
- To start powerful operation 198
- Outdoor unit quiet operation 199
- To cancel outdoor unit quiet operation 199
- To start outdoor unit quiet operation 199
- Econo operation 200
- To cancel econo opera tion 200
- To start econo operation 200
- Before using home leave operation 201
- Home leave operation 201
- To cancel home leave operation 201
- To start home leave operation 201
- Use as a favorite mode 202
- Use as an energy saving mode 202
- Useful in these cases 202
- What s the home leave operation 202
- Intelligent eye operation 203
- To cancel the intelligent eye operation 203
- To start intelligent eye operation 203
- Caution 204
- Intelligent eye is useful for energy saving 204
- Notes on intelligent eye 204
- Intelligent eye operation 205
- Press sensor button 205
- Press sensor button again 205
- To cancel the intelligent eye operation 205
- To start intelligent eye operation 205
- Caution 206
- Intelligent eye is useful for energy saving 206
- Notes on intelligent eye 206
- Timer operation 207
- To cancel the off timer operation 207
- To use off timer operation 207
- Attention 208
- Press cancel button 208
- Press on timer button 208
- Press on timer button again 208
- Press timer setting button until the time setting reaches the point you like 208
- To cancel on timer operation 208
- To combine on timer and off timer 208
- To use on timer operation 208
- Caution 209
- Instruction sibe18 821 209
- Night quiet mode available only for cooling operation 209
- Note for multi system 209
- Operation manual 209
- Outdoor unit quiet operation 209
- See priority room setting on the next page 209
- Selecting the operation mode 209
- What is a multi system 209
- Note for multi system 210
- Operation mode priority 210
- Priority room setting 210
- Priority when powerful operation is used 210
- Priority when using outdoor unit quiet operation 210
- Ftxs g fvxs f series 211
- Illustrations are for wall mounted type ftxs20 25 35 42 50g as representative 211
- Instruction sibe18 821 211
- Manual contents and reference page 211
- Operation manual 211
- Ftxs 20 25 35 42 50 g 212
- Remote controller 212
- Fvxs 25 35 50 f 213
- Remote controller 213
- Auto dry cool heat fan operation 214
- To change the temperature setting 214
- To start operation 214
- To stop operation 214
- Press fan setting button 215
- To change the airflow rate setting 215
- Adjusting the airflow direction 216
- To adjust the horizontal blades flaps 216
- To adjust the vertical blades louvers 216
- Attention always use a remote controller to adjust the angles of the flaps and louvers if you attempt to move it forcibly with hand when it is swinging the mechanism may be broken always use a remote controller to adjust the louvers angles in side the air outlet a fan is rotating at a high speed 217
- Check comfort airflow operation in the section of comfort airflow operation and intelligent eye operation 217
- Comfort airflow operation 217
- Notes on flaps and louvers angles 217
- Press either the swing button or the swing button 217
- Press the swing button and the swing button 217
- The and display will light up and the flap and louvers will move in turn 217
- Three dimensional 3 d airflow 217
- To cancel 3 d airflow 217
- To start 3 d airflow 217
- When swing button is selected the flaps swinging range depends on the operation mode see the figure 217
- Adjusting the airflow direction 218
- Notes on flap and louvers angle 218
- To adjust the horizontal blade flap 218
- To adjust the vertical blades louvers 218
- Airflow selection 219
- Caution 219
- When setting the air outlet selection switch to 219
- When setting the airflow selection switch to 219
- Comfort airflow and intelligent eye operation 220
- To cancel operation 220
- To start operation 220
- Notes on comfort airflow operation 221
- Notes on intelligent eye operation 221
- Caution 222
- Comfort airflow and intelligent eye operation 222
- Intelligent eye is useful for energy saving 222
- Notes on intelligent eye operation 222
- To combine comfort airflow operation and intelligent eye operation 222
- Powerful operation 223
- To cancel powerful operation 223
- To start powerful operation 223
- Outdoor unit quiet operation 224
- To cancel outdoor unit quiet operation 224
- To start outdoor unit quiet operation 224
- Econo operation 225
- To cancel econo operation 225
- To start econo operation 225
- Timer operation 226
- To cancel the off timer operation 226
- To use off timer operation 226
- Attention 227
- Press cancel button 227
- Press on timer button 227
- Press on timer button again 227
- Press select button until the time setting reaches the point you like 227
- To cancel on timer operation 227
- To combine on timer and off timer 227
- To use on timer operation 227
- Example 228
- Operation manual 215 228
- Program 1 program 2 program 3 program 4 228
- Sibe18 821 instruction 228
- Using in these cases of weekly timer 228
- Weekly timer operation 228
- Press button 229
- Press next button 229
- Press select button to select the desired mode 229
- Press select button to select the desired time 229
- To use weekly timer operation 229
- Press button to complete the setting 230
- Press next button 230
- Press select button to select the desired temperature 230
- Weekly timer operation 230
- Press button 231
- Press button 2 231
- Press copy button 231
- Using copy mode 231
- Canceling all reservations 232
- Canceling individual reservations 232
- Confirming a reservation 232
- To cancel weekly timer operation 232
- Weekly timer operation 232
- Night quiet mode available only for cooling operation 233
- Note for multi system 233
- Outdoor unit quiet operation 233
- Selecting the operation mode 233
- Note for multi system 234
- Operation mode priority 234
- Priority room setting 234
- Priority when powerful operation is used 234
- Priority when using outdoor unit quiet operation 234
- Fhq b series 235
- Name and function of each switch and display on the remote controller 236
- Adjustment 237
- Cooling heating automatic fan and program dry operation 237
- Defrost operation 237
- Explanation of heating operation 237
- On off 237
- Operation mode selec tor 237
- Operation procedure 237
- Press on off button 237
- Press operation mode selector but ton several times and select the opera tion mode of your choice as follows 237
- Press temperature setting button and program the setting temperature 237
- Regarding outside air temperature and heat ing capacity 237
- Temperature setting 237
- A up and down direction 238
- Air flow direction adjust 238
- B left and right direction 238
- Fan speed control 238
- Movement of the air flow flap 238
- Press fan speed control button 238
- Press the air flow direction adjust button to select the air direction as following 238
- Press the timer mode start stop button several times and select the mode on the display 238
- Program timer operation 238
- Timer mode start stop 238
- Important 239
- Maintenance for service personnel 239
- Optimum operation 239
- Press the programming time button and set the time for stopping or starting the sys tem 239
- Press the timer on off button 239
- Programming time 239
- Timer on off 239
- How to clean air outlet and outside panels 240
- How to clean the air filter 240
- How to clean the suction grille 240
- Not malfunction of the air conditioner 241
- Start up after a long stop 241
- What to do when stopping the sys tem for a long period 241
- Breaker 243
- Indoor unit no in which a malfunction occurs 243
- Inspection display 243
- Operation lamp 243
- Trip position switch 243
- Trouble shooting 243
- Ffq b series 244
- Name and function of each switch and display on the remote controller 245
- Operation procedure 245
- Adjustment 246
- Air flow direction adjust 246
- Cooling heating automatic fan and program dry operation 246
- Defrost operation 246
- Explanation of heating operation 246
- Fan speed control 246
- On off 246
- Operation mode selec tor 246
- Press fan speed control button 246
- Press on off button 246
- Press operation mode selector but ton several times and select the opera tion mode of your choice as follows 246
- Press temperature setting button and program the setting temperature 246
- Regarding outside air temperature and heat ing capacity 246
- Temperature setting 246
- Up and down adjustment 246
- Movement of the air flow flap 247
- Optimum operation 247
- Press the air flow direction adjust button to select the air direction as following 247
- Press the programming time button and set the time for stopping or starting the sys tem 247
- Press the timer mode start stop but ton several times and select the mode on the display 247
- Press the timer on off button 247
- Program timer operation 247
- Programming time 247
- Timer mode start stop 247
- Timer on off 247
- How to clean the air filter 248
- Important 248
- Maintenance for service personnel 248
- Only a qualified service person is allowed to perform maintenance 248
- How to clean air outlet and out side panels 249
- How to clean the suction grille 249
- Not malfunction of the air conditioner 249
- Start up after a long stop 249
- What to do when stopping the sys tem for a long period 249
- Trouble shooting 252
- Caution for diagnosis 43 254
- List of malfunction code 62 4 troubleshooting for ra indoor unit 65 254
- Part 8 troubleshooting 254
- Service check function 47 254
- Troubleshooting for bp unit 94 254
- Troubleshooting for outdoor unit 01 254
- Troubleshooting for skyair indoor unit 75 254
- Check 46 9 thermistor resistance temperature characteristics 49 10 pressure sensor 51 11 method of replacing the inverter s power transistors modules 52 255
- Caution for diagnosis 256
- Troubleshooting with the operation lamp ra indoor unit 256
- Troubleshooting with the led on the skyair indoor unit 257
- Troubleshooting with the led on the outdoor unit 258
- Caution for diagnosis sibe18 821 259
- Led4 h5p 259
- Leda h1p led1 h2p led2 h3p led3 h4p 259
- Troubleshooting 259
- Troubleshooting with the led on the bp unit 259
- Check method 1 1 when the timer cancel button is held down for 5 seconds a 260
- In the arc433 series remote controller the temperature display sections on the main unit indicate corresponding codes 260
- Indication flashes on the temperature display section 260
- Press the timer cancel button repeatedly until a continuous beep is produced 260
- Ra indoor unit wireless remote controller 260
- Service check function 260
- The code indication changes in the sequence shown below and notifies with a long beep 260
- 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 261
- Arc452 series 1 when the timer cancel button is held down for 5 seconds a 00 indication flashes on the temperature display section 262
- 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 262
- Press the timer cancel button repeatedly until a continuous beep is produced 262
- The code indication changes in the sequence shown below and notifies with a long beep 262
- Timer cancel button 262
- Error code list in relation to ra indoor units 265
- Not used for troubleshooting 265
- Explanation the following modes can be selected by using the inspection test operation button on the remote control 266
- Inspection mode 266
- Local setting mode service mode 266
- Normal mode 266
- Sibe18 821 service check function 266
- Skyair indoor unit inspection test button 266
- Test operation mode 266
- Troubleshooting 253 266
- Skyair indoor unit wired remote controller 267
- Skyair indoor unit wireless remote controller 268
- Blinks 270
- High probability of malfunction 270
- Indoor unit 270
- Low probability of malfunction no possibility of malfunction do not replace 270
- Off no connection with troubleshooting 270
- Possibility of malfunction 270
- Sky air indoor unit error codes and led indication 270
- Symbols 270
- System 270
- Detail description on next page 271
- Malfunction code indication by outdoor unit pcb 271
- Push the mode bs1 button and returns to setting mode 1 271
- Push the return bs3 button and switches to the initial status of monitor mode 271
- Push the return bs3 button once to display first digit of malfunction code 271
- Push the set bs2 button and set the led display to a setting item 271
- Push the set bs2 button once to display malfunction location 271
- Push the set bs2 button once to display master or slave 1 or slave 2 and malfunction location 271
- Push the set bs2 button once to display second digit of malfunction code 271
- Service check function sibe18 821 271
- To enter the monitor mode push the mode bs1 button when in setting mode 1 271
- Troubleshooting 271
- Sibe18 821 service check function 272
- Troubleshooting 259 272
- Detail description on next page 273
- Push the mode bs1 button and returns to setting mode 1 273
- Push the return bs3 button and switches to the initial status of monitor mode 273
- Push the return bs3 button once to display first digit of malfunction code 273
- Push the set bs2 button and set the led display to a setting item 273
- Push the set bs2 button once to display malfunction location 273
- Push the set bs2 button once to display master or slave 1 or slave 2 and malfunction location 273
- Push the set bs2 button once to display second digit of malfunction code 273
- Service check function sibe18 821 273
- To enter the monitor mode push the mode bs1 button when in setting mode 1 273
- Troubleshooting 273
- Sibe18 821 service check function 274
- Troubleshooting 261 274
- List of malfunction code 275
- The system operates for malfunction codes indicated in black squares however be sure to check and repair 275
- The system operates for malfunction codes indicated in black squares however be sure to check and repair 276
- The system operates for malfunction codes indicated in black squares however be sure to check and repair 277
- Indoor unit pcb abnormality 278
- Troubleshooting for ra indoor unit 278
- Freeze up protection control or high pressure control 279
- Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 280
- Caution 280
- Check no 6 refer to p 73 280
- Sibe18 821 troubleshooting for ra indoor unit 280
- Troubleshooting 280
- Troubleshooting 267 280
- Ac motor duct floor ceiling 281
- Check no 6 refer to p 74 281
- Detection error due to faulty control pcb 281
- Fan motor or related abnormality 281
- Malfunction decision conditions 281
- Method of malfunction detection 281
- Operation halt due to breaking of the fan motor lead wires 281
- Operation halt due to breaking of wire inside the fan motor 281
- Operation halt due to faulty capacitor of the fan motor 281
- Operation halt due to short circuit inside the fan motor winding 281
- Remote controller display 281
- Supposed causes 281
- The rotation speed detected by the hall ic during fan motor operation is used to determine abnormal fan motor operation 281
- Troubleshooting 281
- 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 281
- Dc motor wall 20 35 g series and 60 71 class floor 282
- Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 283
- Caution 283
- Check no 1 refer to p 72 283
- Check no 2 refer to p 72 283
- Troubleshooting 283
- Troubleshooting for ra indoor unit sibe18 821 283
- Thermistor or related abnormality indoor unit 284
- Check no 1 1 check connector connection 2 check motor power supply voltage output pins 4 7 and 4 8 3 check motor control voltage pins 4 3 4 check rotation command voltage output pins 4 2 5 check rotation pulse input pins 4 1 285
- Check no 2 1 check connector connection 2 check motor control voltage output pins 2 1 285
- Fan motor connector output check 285
- Troubleshooting 285
- Troubleshooting for ra indoor unit sibe18 821 285
- 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 286
- Thermistor resistance check 286
- Hall ic check 287
- Indoor unit pcb abnormality 288
- Troubleshooting for skyair indoor unit 288
- Malfunction of drain water level system float type 289
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 290
- Sibe18 821 troubleshooting for skyair indoor unit 290
- Troubleshooting 290
- Troubleshooting 277 290
- Applicable models fhq 291
- Error in drain pipe installation 291
- Faulty float switch 291
- Faulty indoor unit pcb 291
- Malfunction decision conditions 291
- Malfunction of drain system 291
- Method of malfunction detection 291
- Remote controller display 291
- Supposed causes 291
- Troubleshooting 291
- Water leakage is detected based on float switch on off operation while the compressor is in non operation 291
- When the float switch changes from on to off while the compressor is in non operation 291
- Indoor unit fan motor lock 292
- Malfunction of indoor unit fan motor 293
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 294
- Check no 1 refer to p 92 294
- Sibe18 821 troubleshooting for skyair indoor unit 294
- Troubleshooting 294
- Troubleshooting 281 294
- Swing flap motor malfunction lock 295
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 296
- Sibe18 821 troubleshooting for skyair indoor unit 296
- Troubleshooting 296
- Troubleshooting 283 296
- Malfunction of capacity setting 297
- Malfunction of heat exchanger thermistor r2t 298
- Malfunction of heat exchanger thermistor r3t 299
- Malfunction of suction air thermistor 300
- Malfunction of remote controller thermistor 301
- Applicable models ffq fhq 302
- Connection of 2 master remote controllers when using 2 remote controllers 302
- Failure of indoor pcb 302
- Failure of remote controller 302
- Malfunction decision conditions 302
- Method of malfunction detection 302
- Microcomputer checks if transmission between indoor unit and remote controller is normal 302
- Outside cause noise etc 302
- Remote controller display 302
- Supposed causes 302
- Transmission error between indoor unit and remote controller 302
- Troubleshooting 302
- When transmission is not carried out normally for a certain amount of time 302
- Transmission error between main and sub remote controller 303
- Applicable models ffq fhq 304
- Faulty remote controller wiring 304
- Incorrect field setting 304
- Indoor outdoor bp transmission line 304
- Malfunction decision conditions 304
- Malfunction of field setting switch 304
- Method of malfunction detection 304
- Remote controller display 304
- Supposed causes 304
- Troubleshooting 304
- Check no 01 check for fan motor connector power supply line 1 turn the power supply off with the relay connector disconnected measure the resistance between uvw phases of the connector 3 cores at the motor side then make sure that the resistance between each phase is balanced and not short circuited 305
- Troubleshooting 305
- Troubleshooting for skyair indoor unit sibe18 821 305
- Check no 02 check for thermistors 306
- Disconnect the thermistor connector from pcb then measure the resistance by using a tester 306
- Detection by checking continuity and lack of connector 307
- Faulty harness of electronic expansion valve 307
- Incorrect connectors connection of electronic expansion valve 307
- Malfunction decision conditions 307
- Malfunction is determined by no common voltage applied when turning the power supply on 307
- Malfunction of electronic expansion valve 307
- Method of malfunction detection 307
- Remote controller display 307
- Supposed causes 307
- Troubleshooting 307
- Troubleshooting for bp unit 307
- Faulty bp unit pcb 308
- Faulty bp liquid or gas pipe temperature sensor 309
- Faulty bp liquid or gas pipe thermistor 309
- Faulty connectors connection of bp liquid or gas pipe temperature sensor 309
- Malfunction decision conditions 309
- Method of malfunction detection 309
- Remote controller display 309
- Supposed causes 309
- Troubleshooting 309
- When the bp liquid or gas pipe temperature sensor became short circuited or open 309
- Transmission error between indoor unit and bp unit 310
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 311
- Check no 4 refer to p 00 311
- Troubleshooting 311
- Troubleshooting for bp unit sibe18 821 311
- Check no 4 refer to p 00 312
- Distortion of power supply wave 312
- Faulty bp unit pcb 312
- Faulty outdoor unit pcb 312
- Faulty outdoor unit power supply 312
- Incorrect connection of transmission wire 312
- Malfunction decision conditions 312
- Method of malfunction detection 312
- Outdoor unit indication 312
- Supposed causes 312
- Transmission error between outdoor unit and bp unit 312
- Transmission error is detected when the outdoor unit could not received the data from bp unit correctly 312
- Troubleshooting 312
- When the data from bp unit could not be correctly received continuously for 10 minutes 312
- Power supply waveforms check 313
- Faulty outdoor unit pcb 314
- Troubleshooting for outdoor unit 314
- Actuation of high pressure switch 315
- 1 make a comparison between the voltage of the pressure sensor and that read by the pressure gauge 316
- 2 make a comparison between the high pressure value checked with the service checker and the voltage of the pressure sensor see 1 316
- 3 make measurement of voltage of the pressure sensor 316
- As to the voltage of the pressure sensor make measurement of voltage at the connector and then convert it to pressure according to information on page 351 316
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 316
- Check no 1 refer to p 46 316
- Sibe18 821 troubleshooting for outdoor unit 316
- Troubleshooting 316
- Troubleshooting 303 316
- Actuation of low pressure sensor 317
- 1 make a comparison between the voltage of the pressure sensor and that read by the pressure gauge as to the voltage of the pressure sensor make measurement of voltage at the connector and then convert it to pressure according to information on page 351 2 make a comparison between the low pressure value checked with the service checker and the voltage of the pressure sensor see 1 3 make measurement of voltage of the pressure sensor 318
- Are the characteristics of the low pressure sensor normal see 1 318
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 318
- Check no 2 refer to p 47 318
- Sibe18 821 troubleshooting for outdoor unit 318
- Troubleshooting 318
- Troubleshooting 305 318
- Applicable models aii outdoor unit models 319
- Compressor lock 319
- Compressor motor lock 319
- Faulty inverter pcb 319
- High differential pressure 0 mpa or more 319
- Incorrect uvw wiring 319
- Inverter pcb takes the position signal from uvw line connected between the inverter and compressor and the malfunction is detected when any abnormality is observed in the phase current waveform 319
- Malfunction decision conditions 319
- Method of malfunction detection 319
- Remote controller display 319
- Stop valve is left in closed 319
- Supposed causes 319
- This malfunction will be output when the inverter compressor motor does not start up even in forced startup mode 319
- Troubleshooting 319
- Applicable models aii outdoor unit models 320
- Check no 3 refer to p 48 320
- Clearing condition operate for 5 minutes normal 320
- Fan does not run due to foreign matters tangled 320
- Malfunction decision conditions 320
- Malfunction of fan motor 320
- Malfunction of fan motor system is detected according to the fan speed detected by hall ic when the fan motor runs 320
- Malfunction of outdoor unit fan motor 320
- Method of malfunction detection 320
- Remote controller display 320
- Supposed causes 320
- The harness connector between fan motor and pcb is left in disconnected or faulty connector 320
- Troubleshooting 320
- When malfunction is generated 4 times the system shuts down 320
- When the fan runs with speed less than a specified one for 6 seconds or more when the fan motor running conditions are met 320
- Malfunction of moving part of electronic expansion valve y1e y3e 321
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 322
- Sibe18 821 troubleshooting for outdoor unit 322
- Troubleshooting 322
- Troubleshooting 309 322
- Abnormal discharge pipe temperature 323
- Abnormality is detected according to the temperature detected by the discharge pipe temperature sensor 323
- Applicable models aii outdoor unit models 323
- Faulty connection of discharge pipe temperature sensor 323
- Faulty discharge pipe temperature sensor 323
- Faulty outdoor unit pcb 323
- Malfunction decision conditions 323
- Method of malfunction detection 323
- Refer to thermistor resistance temperature characteristics table on p349 323
- Remote controller display 323
- Supposed causes 323
- Troubleshooting 323
- When the discharge pipe temperature rises to an abnormally high level when the discharge pipe temperature rises suddenly 323
- Refrigerant overcharged 324
- Applicable models aii outdoor unit models 325
- Defect of outdoor unit pcb a1p 325
- Defect of thermistor r1t for outdoor air 325
- Malfunction decision conditions 325
- Malfunction is detected from the temperature detected by the outdoor air thermistor 325
- Malfunction of thermistor for outdoor air r1t 325
- Method of malfunction detection 325
- Refer to thermistor resistance temperature characteristics table on p349 325
- Remote controller display 325
- Supposed causes 325
- Troubleshooting 325
- When the outside air temperature thermistor has short circuit or open circuit 325
- Applicable models aii outdoor unit models 326
- Defect of outdoor unit pcb a1p 326
- Defect of thermistor r2t for outdoor unit discharge pipe 326
- Malfunction decision conditions 326
- Malfunction is detected from the temperature detected by discharge pipe temperature thermistor 326
- Malfunction of discharge pipe thermistor r2t 326
- Method of malfunction detection 326
- Refer to thermistor resistance temperature characteristics table on p349 326
- Remote controller display 326
- Supposed causes 326
- Troubleshooting 326
- When a short circuit or an open circuit in the discharge pipe temperature thermistor is detected 326
- Malfunction of thermistor r3t r5t for suction pipe1 2 327
- Applicable models aii outdoor unit models 328
- Defect of outdoor unit pcb a1p 328
- Defect of thermistor r4t for outdoor unit heat exchanger 328
- Malfunction decision conditions 328
- Malfunction is detected from the temperature detected by the heat exchanger thermistor 328
- Malfunction of thermistor r4t for outdoor unit heat exchanger 328
- Method of malfunction detection 328
- Refer to thermistor resistance temperature characteristics table on p349 328
- Remote controller display 328
- Supposed causes 328
- Troubleshooting 328
- When a short circuit or an open circuit in the heat exchange thermistor is detected 328
- Applicable models aii outdoor unit models 329
- Defect of outdoor unit pcb a1p 329
- Defect of thermistor r7t for outdoor unit liquid pipe 329
- Malfunction decision conditions 329
- Malfunction is detected from the temperature detected by the liquid pipe thermistor 329
- Malfunction of thermistor r7t for outdoor unit liquid pipe 329
- Method of malfunction detection 329
- Refer to thermistor resistance temperature characteristics table on p349 329
- Remote controller display 329
- Supposed causes 329
- Troubleshooting 329
- When a short circuit or an open circuit in the heat exchange thermistor is detected 329
- Applicable models aii outdoor unit models 330
- Faulty outdoor unit pcb 330
- Faulty subcooling heat exchanger gas pipe thermistor r6t 330
- Malfunction decision conditions 330
- Malfunction is detected according to the temperature detected by subcooling heat exchanger gas pipe thermistor 330
- Malfunction of subcooling heat exchanger thermistor r6t 330
- Method of malfunction detection 330
- Refer to thermistor resistance temperature characteristics table on p349 330
- Remote controller display 330
- Supposed causes 330
- Troubleshooting 330
- When the subcooling heat exchanger gas pipe thermistor is short circuited or open 330
- Malfunction of high pressure sensor 331
- Malfunction of low pressure sensor 332
- Malfunction of pcb 333
- Actuation of fin thermal actuates above 83 c 334
- Applicable models aii outdoor unit models 334
- Defect of fin thermistor 334
- Defect of inverter pcb 334
- Fin temperature is detected by the thermistor of the radiation fin 334
- Malfunction decision conditions 334
- Malfunction of inverter radiating fin temperature rise 334
- Method of malfunction detection 334
- Remote controller display 334
- Supposed causes 334
- Troubleshooting 334
- When the temperature of the inverter radiation fin increases above 83 c 334
- Applicable models aii outdoor unit models 335
- Compressor start up malfunction mechanical lock 335
- Defect of compressor coil disconnected defective insulation 335
- Defect of inverter pcb 335
- Higher voltage than actual is displayed when the inverter output voltage is checked by tester 335
- Inverter compressor abnormal 335
- Malfunction decision conditions 335
- Malfunction is detected from current flowing in the power transistor 335
- Method of malfunction detection 335
- Remote controller display 335
- Supposed causes 335
- Troubleshooting 335
- When an excessive current flows in the power transistor instantaneous overcurrent also causes activation 335
- Applicable models aii outdoor unit models 336
- Compressor coil disconnected 336
- Compressor overload 336
- Defect of outdoor unit pcb a1p 336
- Inverter current abnormal 336
- Malfunction decision conditions 336
- Malfunction is detected by current flowing in the power transistor 336
- Method of malfunction detection 336
- Remote controller display 336
- Supposed causes 336
- Troubleshooting 336
- When overload in the compressor is detected 336
- Applicable models aii outdoor unit models 337
- Defect of compressor 337
- Defect of outdoor unit pcb a1p 337
- Inverter start up error 337
- Malfunction decision conditions 337
- Malfunction is detected from current flowing in the power transistor 337
- Method of malfunction detection 337
- Pressure differential start 337
- Remote controller display 337
- Supposed causes 337
- Troubleshooting 337
- When overload in the compressor is detected during startup 337
- Applicable models aii outdoor unit models 338
- Check the communication state between inverter pcb and control pcb by micro computer 338
- Defect of noise filter 338
- Defect of outdoor unit pcb 338
- External factor noise etc 338
- Malfunction decision conditions 338
- Malfunction of connection between the inverter microcomputer and outdoor control microcomputer 338
- Malfunction of transmission between inverter and control pcb 338
- Method of malfunction detection 338
- Remote controller display 338
- Supposed causes 338
- Troubleshooting 338
- When the correct communication is not conducted in certain period 338
- High voltage of capacitor in main inverter circuit 339
- Applicable models aii outdoor unit models 340
- Defect of outdoor unit pc board a1p 340
- Defect of radiator fin temperature sensor 340
- Malfunction decision conditions 340
- Malfunction is not decided while the unit operation is continued p4 will be displayed by pressing the inspection button 340
- Malfunction of inverter radiating fin temperature rise sensor 340
- Method of malfunction detection 340
- Remote controller display 340
- Resistance of radiation fin thermistor is detected when the compressor is not operating 340
- Supposed causes 340
- Troubleshooting 340
- When the resistance value of thermistor becomes a value equivalent to open or short circuited status 340
- Faulty combination of inverter and fan driver 341
- Low pressure drop due to refrigerant shortage or electronic expansion valve failure 342
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 343
- Refer to pressure sensor pressure voltage characteristics table on p351 343
- Refer to thermistor resistance temperature characteristics table on p349 343
- Troubleshooting 343
- Troubleshooting for outdoor unit sibe18 821 343
- Voltage measurement point 343
- Power supply insufficient or instantaneous failure 344
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 345
- Check no 3 refer to p 48 345
- Troubleshooting 345
- Troubleshooting for outdoor unit sibe18 821 345
- Check operation not executed 346
- Malfunction of transmission between indoor units and outdoor units 347
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 348
- Sibe18 821 troubleshooting for outdoor unit 348
- Troubleshooting 348
- Troubleshooting 335 348
- Applicable models aii indoor unit models 349
- Connection of two main remote controllers when using 2 remote controllers 349
- Defect of indoor unit pcb 349
- Defect of remote controller pcb 349
- In case of controlling with 2 remote controller check the system using microcomputer is signal transmission between indoor unit and remote controller main and sub is normal 349
- Malfunction decision conditions 349
- Malfunction of indoor unit remote controller transmission 349
- Malfunction of transmission between remote controller and indoor unit 349
- Malfunction of transmission caused by noise 349
- Method of malfunction detection 349
- Normal transmission does not continue for specified period 349
- Remote controller display 349
- Supposed causes 349
- Troubleshooting 349
- Applicable models aii indoor unit models 350
- Connection between sub remote controllers 350
- Defect of remote controller pcb 350
- In case of controlling with 2 remote controller check the system using microcomputer if signal transmission between indoor unit and remote controller main and sub is normal 350
- Malfunction decision conditions 350
- Malfunction of transmission between main and sub remote controller 350
- Malfunction of transmission between main and sub remote controllers 350
- Method of malfunction detection 350
- Normal transmission does not continue for specified period 350
- Remote controller display 350
- Supposed causes 350
- Troubleshooting 350
- Malfunction of transmission between indoor and outdoor units in the same system 351
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 352
- Sibe18 821 troubleshooting for outdoor unit 352
- Troubleshooting 352
- Troubleshooting 339 352
- Applicable models aii indoor unit models 353
- Defect of outdoor unit pcb a1p 353
- Excess of connected indoor units 353
- Excessive number of indoor units 353
- Malfunction decision conditions 353
- Method of malfunction detection 353
- Mismatching of the refrigerant type of indoor and outdoor unit 353
- Remote controller display 353
- Setting of outdoor pcb was not conducted after replacing to spare parts pcb 353
- Supposed causes 353
- The number of indoor units that can be connected to a single outdoor unit system depends on the type of outdoor unit 353
- Troubleshooting 353
- Address duplication of central remote controller 354
- Malfunction of transmission between central remote controller and indoor unit 355
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 356
- Sibe18 821 troubleshooting for outdoor unit 356
- Troubleshooting 356
- Troubleshooting 343 356
- Applicable models all indoor unit models all outdoor unit models 357
- Defect of indoor unit pc board 357
- Failure to execute check operation 357
- Improper connection of transmission wiring between indoor outdoor units and outdoor outdoor units 357
- Malfunction decision conditions 357
- Method of malfunction detection 357
- Note wiring check operation may not be successful if carried out after the outdoor unit has been off for more than 12 hours or if it is not carried out after running all connected indoor units in the fan mode for at least an hour 357
- On check operation the number of indoor units in terms of transmission is not corresponding to that of indoor units that have made changes in temperature 357
- Remote controller display 357
- Stop valve is left in closed 357
- Supposed causes 357
- System is not set yet 357
- The malfunction is determined as soon as the abnormality aforementioned is detected through checking the system for any erroneous connection of units on the check operation 357
- Troubleshooting 357
- Applicable models all indoor unit models all outdoor unit models 358
- Defect of indoor unit pcb 358
- Defect of outdoor unit pcb a1p 358
- Improper connection of transmission wiring between outdoor unit and outdoor unit outside control adaptor 358
- Malfunction decision conditions 358
- Malfunction of system refrigerant system address undefined 358
- Method of malfunction detection 358
- Remote controller display 358
- Supposed causes 358
- Troubleshooting 358
- Check no 1 check for causes of rise in high pressure referring to the fault tree analysis fta shown below probe the faulty points 359
- Check sibe18 821 359
- Troubleshooting 359
- Check no 2 check for causes of drop in low pressure referring to the fault tree analysis fta shown below probe the faulty points 360
- Sibe18 821 check 360
- Troubleshooting 347 360
- Check no 03 check for fan motor connector 1 turn the power supply off 2 with the fan motor connector disconnected measure the resistance between each pin then make sure that the resistance is more than the value mentioned in the following table 361
- Indoor unit for air suction r1t for liquid pipe r2t for gas pipe r3t 362
- Outdoor unit for fin thermistor r1t 362
- Outdoor unit for outdoor air r1t for suction pipe 1 r3t for heat exchanger r4t for suction pipe 2 r5t for subcooling heat exchanger outlet r6t for liquid pipe r7t 362
- Sibe18 821 thermistor resistance temperature characteristics 362
- Thermistor resistance temperature characteristics 362
- Troubleshooting 349 362
- Outdoor unit thermistors for discharge pipe r2t 363
- Thermistor resistance temperature characteristics sibe18 821 363
- Troubleshooting 363
- Pressure sensor 364
- Method of replacing the inverter s power transistors modules 365
- Faulty compressor ground fault ground leakage 366
- Faulty fan motor ground leakage 366
- Power module checking 366
- Sibe18 821 method of replacing the inverter s power transistors modules 366
- The following abnormalities are also doubted besides the pc board abnormality 366
- There needs to be none of each value variation 366
- Troubleshooting 353 366
- When using the digital type of multiple tester make measurement in diode check mode 366
- Part 9 appendix 368
- Piping diagrams 56 368
- Wiring diagrams 63 368
- Appendix 369
- Outdoor units 369
- Piping diagrams 369
- Piping diagrams sibe18 821 369
- Rmxs112 140 160e8v1b 369
- Appendix 357 370
- Bp units 370
- Bpmks967b2b 370
- Bpmks967b3b 370
- D048285a 370
- D048286b 370
- Sibe18 821 piping diagrams 370
- Ftxg25 35ev1bw s ctxg50ev1bw s 371
- Ftxs20 25 35 42g2v1b ftxs50g2v1b 371
- Indoor units 371
- Wall mounted type 371
- Appendix 359 372
- Cross flow fan 372
- Duct connected type 372
- Fdxs50 60cvmb fdxs25 35eavmb 372
- Ftxs60fv1b ftxs71fv1b 372
- On heat exch thermistor 372
- Sibe18 821 piping diagrams 372
- Thermistor on heat exch 372
- Appendix 373
- Floor ceiling suspended dual type 373
- Floor standing type 373
- Flxs25 35bavmb flxs50 60bavmb 373
- Fvxs25 35fv1b 373
- Piping diagrams sibe18 821 373
- Appendix 361 374
- Ceiling mounted cassette type 374
- Ffq25 35 50 60b8v1b 374
- Fvxs50fv1b 374
- Sibe18 821 piping diagrams 374
- Appendix 375
- C1220t 0 375
- Ceiling suspended type 375
- Fhq35 50 60bvv1b 375
- Field piping 375
- Indoor unit 375
- Piping diagrams sibe18 821 375
- To outdoor unit 375
- Appendix 363 376
- Outdoor units 376
- Rmxs112 140 160e8v1b 376
- Sibe18 821 wiring diagrams 376
- Wiring diagrams 376
- Appendix 377
- Bp units 377
- Bpmks967b2b 377
- Bpmks967b3b 377
- D048565b 377
- D048566a 377
- Wiring diagrams sibe18 821 377
- Appendix 365 378
- Ftxg25 35ev1bw s ctxg50ev1bw s 378
- Ftxs20 25 35 42 50g2v1b 378
- Indoor units 378
- Sibe18 821 wiring diagrams 378
- Wall mounted type 378
- Appendix 379
- Duct connected type 379
- Fdxs50 60cvmb fdxs25 35eavmb 379
- Ftxs60 71fv1b 379
- Wiring diagrams sibe18 821 379
- Appendix 367 380
- D033909f 380
- D055953a 380
- Floor ceiling suspended dual type 380
- Floor standing type 380
- Flxs25 35 50 60bavmb 380
- Fvxs25 35 50fv1b 380
- Sibe18 821 wiring diagrams 380
- Appendix 381
- Ceiling mounted cassette type 381
- Ffq25 35 50 60b8v1b 381
- Wiring diagrams sibe18 821 381
- Appendix 369 382
- Ceiling suspended type 382
- Connector 382
- Fhq35 50 60bvv1b 382
- Field wiring 382
- H2p h3p 382
- In case using central remote controller connect it to the unit in accordance with the attached installation manual 4 x24a is connected when the wireless remote controller kit is being used 5 remote controller model varies according to the combination system confirm engineering materials and catalogs etc before connecting 6 in case installing the drain pump m1p remove the jumper connector of x15a and execute the additional wiring for float switch and drain pump 7 symbols show as follows red red blk black wht white ylw yellow prp purple gry gray blu blue 382
- Note 4 x24a 382
- Sibe18 821 wiring diagrams 382
- Terminal 382
- To outdoor 382
- Numerics 384
- Drawings flow charts 390
- Numerics 390
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