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Trouble shooting 11

INDOOR UNIT Error Method:
Network Communication Error

Indicate or Display:

Indoor Unit : Operation LED 1 times Flash, Timer LED 4 Times Flash,

Filter LED Continuous Flash.

Outdoor Unit : E.5 U.1

Error Code : 1 4

Detective Actuators:

Indoor unit Controller PCB circuit

Indoor unit Communication PCB

Detective details:

When the cut-off of network communication is detected (more than 90 seconds

passed since the last receipt of Outdoor unit signal).

Check Point 2 : Check if any outside cause such as voltage drop or noise

Instant voltage drop ----- Check if there is any electric equipment with a large load within the same circuit.

Momentary power failure ----- Check contact failure or leak current in power supply circuit

>>Check Outdoor Unit as well.

Check if there is any equipment that causes harmonic wave near the power cable (Neon light bulb or any electronic equipment which

causes harmonic wave). And check the complete insulation of grounding.

>>If the same symptom does not reappear after resetting the power, possibility of noise is high.

Check Point 1 : Check the connection

After turning off the power, check and correct followings.

Is Indoor Communication PCB loose?

Check loose or removed connection of communication line between Indoor

and Outdoor unit.

When the signal amplifier is connected , is it failure of signal amplifier?

(Refer to "TROUBLE SHOOTING FOR OPTIONAL PARTS")

Check Point 3 : Check Communication PCB and Controller PCB

If some of Indoor units have errors, replace Communication PCB of the Indoor units that have the error.

>>If the symptom does not change, replace Indoor unit Controller PCB.

If all the Indoor units have error, check if the Outdoor Unit Communication PCB has a loose connection.

>>If the symptom does not change, replace Outdoor unit Communication PCB (Replace Controller PCB if it does not change).

Forecast of Cause :

1. Connection failure 2. Outside cause 3. Communication PCB failure 4. Controller PCB failure

04-21

Содержание Airstage J-II

Страница 1: ...Small VRF system for light commercial and home use SERVICE MANUAL ...

Страница 2: ......

Страница 3: ...ESSOR OPERATION 02 01 02 02 02 02 02 03 2 2 3 Speed Range of Start Stop and Operation 2 2 2 Capacity Control 02 02 2 2 1 Operation Stop Condition 2 5 SPECIAL OPERATION 02 09 02 09 02 10 2 5 2 Pre Heat Operation 2 5 1 Oil Recovery Operation 2 6 PROTECTIVE FUNCTION 02 11 02 11 2 6 1 Protective Function List 2 5 3 Defrost Operation Control 02 10 2 3 FAN CONTROL 02 05 2 4 EXPANSION VALVE CONTROL 02 08...

Страница 4: ... 02 04 03 04 03 4 2 4 Remote Controller Display 4 2 3 Error Code List for Outdoor Unit 4 2 2 Outdoor Unit Display 4 3 TROUBLE SHOOTING 04 04 04 05 4 2 5 Error Code List for Simple and Wired Remote Controller 04 07 4 2 6 Error Code List for Group Remote Controller 04 07 4 2 7 Trouble Level of System 04 08 04 06 04 11 4 3 3 Trouble Shooting for Optional Parts 4 3 2 Trouble Shooting With Error Code O...

Страница 5: ...3 1 Pressure sensor 05 01 05 02 05 02 5 2 2 Outdoor Unit 05 18 5 3 CHARACTERISTICS OF SENSORS 05 19 05 19 5 3 2 Thermistor resistance 05 20 5 3 3 Saturation temperature and saturation pressure tables R410A 05 21 5 3 4 Temperature and pressure of refrigerant Graph 05 22 6 DISASSEMBLY PROCESS ...

Страница 6: ......

Страница 7: ...1 TEST RUN ...

Страница 8: ......

Страница 9: ...t so that the tilt is within 10mm Excessive tilt will cause water leakage Select the size of the heat insulating material according to the ambient temperature and relative humidity of the refrigerant Use a heat insulating material having a heat conductivity of 0 043W m k or less When making flare connections always use a torque wrench and tighten the flare nut positively to the specified torque Pr...

Страница 10: ...e Perform setting by push button SW on the outdoor unit Main PCB in the power ON state after all indoor units have stopped operation When setting the address of Signal amplifier please refer to the installation manual of the signal amplifier The address setting can be set by automatically from 1 outdoor unit on the network Refer to the Page 01 06 Setting mode F3 10 Address setting for Signal Amp W...

Страница 11: ...be no scratches deformation tilting etc Shall be checked and entered in the check sheet Shall be installed positively Connection points check loose terminal panel screws check 0 33mm2 shielded wire used 22AWG Connection points check loose terminal panel screws check 0 33mm2 Connection points check loose terminal panel screws check Check whether or not the heat insulation material is installed with...

Страница 12: ... 2 2 Check Items After Power ON 01 04 Function setting Are the necessary functions set For the setting Refer to the page 01 15 18 Outdoor unit Main PCB push button SW setting check Note Cooling test run for each refrigerant circuit If multiple refrigerant circuits are test run at the same time refrigerant circuit address setting errors cannot be detected Judgement standard Check Check contents Pro...

Страница 13: ...ned the figures will be changed slightly It depends on following conditions Outdoor unit capacity Indoor and outdoor temperature Indoor unit capacity Pipe length etc Indoor unit service tool actual measurement 1 Error occured Check on the Error code on the Remote controller or Indoor unit or Outdoor unit or Service tool and check the description of the Error code Refer to the Trouble shooting in t...

Страница 14: ...o the procedures below 1 FUNCTION Setting First 2 digits Last 2 digits the display when the main power is turned on When F4 to F9 are displayed continue to press the SELECT button until F3 is displayed MODE EXIT SELECT SELECT ENTER SELECT ENTER Automatic address setting for signal ampliÞers Press the SELECT button until 10 is displayed Press the ENTER button for more than 3 seconds Setting is comp...

Страница 15: ...s below 1 FUNCTION Setting First 2 digits Last 2 digits the display when the main power is turned on When F4 to F9 are displayed continue to press the SELECT button until F3 is displayed MODE EXIT SELECT SELECT ENTER 1 2 4 Automatic address setting for Indoor units It may take about 10 minutes for completing the processing End First 2 digits Last 2 digits Press the SELECT button until 11 is displa...

Страница 16: ... of indoor unit and outdoor unit Press the ENTER button for more than 3 seconds This will be displayed when the Indoor unit connection check starts MODE EXIT SELECT ENTER ENTER ENTER 1 2 1 The number of connected indoor units 2 Volume ratio of the indoor units connection Ex When 8 units are connected Ex When the ratio is 120 Please refer to the following Error code for details Note Error code 22 1...

Страница 17: ...on Fuction select condition Function mode SWITCH POSITION SW107 SW108 SW109 MODE EXIT SELECT ENTER LED101 GREEN POWER MODE LED105 LED104 LED102 RED ERROR Push button switch 7 Segment LED Lamp Outdoor unit printed circuit board TEST RUN SETTING Monitoring mode Setting mode Error history mode For a detailed description of push button operation refer to the D T manual Chapter 6 SYSTEM DESIGN LED105 L...

Страница 18: ...al and perform operation check Check that there are no abnormal sounds or vibration sounds during test run operation Perform the test operation for 60 minutes 1 Standard wired remote controller UTY LNH UTY RNK button button and Stop the indoor and outdoor units Push the remote controller simultaneously for more than three seconds The air conditioner will start to conduct a test run and will displa...

Страница 19: ...est Operation Central Controller Setting Indoor unit Special setting Indoor Unit Set Temp Range Filter Sign R C Prohibition Group Select All Identify Unit Clear Unit On Select All Details Off Operation Help Setup Menu Monitor Group 1 2 Monitor All UTY DCG On Coll 25 0 05 31 03 59 05 31 03 59 05 31 03 59 Test Operation 05 31 03 59 RCG_05 ...

Страница 20: ... Up Down List Heat Auto Cool 26 0 C 24 0C Auto 22 0 C Auto 24 0 C 21 5 C Heat 21 5 C 21 5 C Cool Off Off Off All 21 0 C Heat All LangeGroup LangeGroup Top Up Down List OfficeA PC Room Room 101 Restrant Entrance Meeting 1 Off Off Off Mixed Heat Auto Cool 24 0 C 26 0 C Low Auto 21 5 C High Office B Mixed Mixed Mixed Mixed Name Expand Status Mode Set Temp Fan R C Prohibit On On On Status On Status On...

Страница 21: ...ration is reset by stopping operation of the objective devices by pressing Off of Operation and then pressing OK on the setting screen 01 13 3 4 5 Cancel Off On OK Transferring data Please wait On On Reset Cancel Stand by Defrost Stand by Oil Recovery Test Operation Start Air Flow Direction Economy AntiFreeze Filter Sign Operation Test Up Down Swing Swing Left Right Off Off Special State Status On...

Страница 22: ...he indoor unit operates or stops All units in the same refrigerant circuit will start to conduct a test run in accordance with the operation mode set by push switch of outdoor unit see 1 2 3 4 After 60 minutes passes the test run stops 5 Test running initialization is shown below Fan speed Hi Hi Room Temperature Indication 18 30 Hi Hi 18 30 Vertical Air Direction Panel Swing Operating Mode Cooling...

Страница 23: ...ischarge temperature The value of the Thermistor 1 is displayed 32 Information on Thermistor 3 Outdoor temperature The value of the Thermistor 3 is displayed 33 Information on Thermistor 4 Suction temperature The value of the Thermistor 4 is displayed 34 Information on Thermistor 5 Heat exchanger temperature The value of the Thermistor 5 is displayed 36 Information on Thermistor 7 Liquid temperatu...

Страница 24: ...is forbidden 70 Electricity meter No setting 1 Set the ones digit and tens digit of the No of the electricity meter connected to CN135 3 00 99 Setting number x00 x99 00 71 Electricity meter No setting 2 Set the hundreds digit of the No of the electricity meter connected to CN135 3 00 02 Setting number 0xx 2xx 00 72 Electricity meter pulse setting 1 Set the ones digit and tens digit of the No of th...

Страница 25: ... Start Up Error Discharge Temperature 1 Abnormal Low Pressure Abnormal Current Sensor 1 Error Trip Detection Rush Current Limiting Resistor Temp Rise Protection Outdoor Unit FAN motor 1 Lock Error Outdoor Unit FAN motor 2 Lock Error Reset Error Item List By Abnormal Reset Setting Push switch on outdoor unit PCB 1 time ago Newest Error History Mode 2 times ago 5 times ago Meaning of Error History N...

Страница 26: ...ng 2 C 02 Temperature undershoot setting 2 C 31 Heat air temperature trigger 00 Default 0 C 01 Temperature undershoot setting 6 C 02 Temperature slightly undershoot setting 4 C 03 Temperature overshoot setting 4 C Change of 40 Auto restart 00 Enable 01 Disable 43 Cool air prevention 00 Enable 01 Disable Ventilation mode 46 External control 00 Start Stop 01 Emergency stop 47 Error report target 00 ...

Страница 27: ...2 OUTDOOR UNIT OPERATION CONTROL ...

Страница 28: ......

Страница 29: ... valve coil AC220 240V 50 60Hz 6 5 W Solenoid valve Comp pressure equalizing valve AC220 240V 50Hz 6W Crank case heater For Inverter Compressor AC240V 25W Base heater Field supply AC220 240V 35W LON WORKS Inverter communication External input 1 CN131 Low noise mode operation External input 2 CN132 Cooling Heating priority External input 3 CN133 Outdoor unit operation peak control External input 4 ...

Страница 30: ...cing protection Failure Refer to chapter 4 TROUBLE SHOOTING Under expansion valve initialization At protective operation Emergency stop Defrost operation 02 02 2 2 COMPRESSOR OPERATION 2 2 2 Capacity Control 1 Capacity of compressor operation By the operation of DC inverter rotary compressor the amount of required refrigerant circulation acceding to cooling and heating load can be supplied from co...

Страница 31: ...pends on system capacity capacity of compressor operation pipe length and capacity shift switch settings Cooling Heating 02 03 2 2 3 Speed Range of Start Stop And Operation On stop mode 0 rps On operating mode 20 100 rps 1 Cooling starting process For cooling operation only the upper limit speed at starting is made 50rps and is raised in 10rps increments every 60 seconds Speed Time 0 50rps 60sec T...

Страница 32: ...ocess or High pressure 2 63MPa or Discharge SH 10 and Discharge temperature 10 a 1 25 Low pressure value 2 125 High Pressure 3 60MPa 3 30MPa Maximum 3 00MPa Maximum speed 80rps Maximum speed 90rps Maximum speed 95rps Maximum speed 100rps a Starting process Compressor operates based on the required capacity at the start up after that the target high pressure control begins However when the followin...

Страница 33: ...ted value TAOUT 30 C 30 C TAOUT 20 C 20 C TAOUT 10 C 10 C TAOUT The initial speed of the outdoor unit is detected by out door temperature sensor 35 52 40 4 46 6 54 High pressure saturation temperature Outdoor temperature Upper limit of target high pressure saturation temp Low limit of target high pressure saturation temp Target high pressure saturation temp Thereafter the high pressure is monitori...

Страница 34: ...gh pressure is monitoring at a set time interval and the fan speed is changed by the following conditions Condition which lowers the fan speed High pressure 3 30MPa and heat sink temperature 80 C Condition which raises the fan speed High pressure saturation 3 20MPa or heat sink temperature 85 C The initial speed of the first boot outdoor unit is detected by outdoor air temperature sensor value TAO...

Страница 35: ...e is low low pressure saturation 0 C at heating Operation in low noise mode When the low noise mode setting ON from PUSH SW or EXTERNAL INPUT the outdoor unit operates in the low noise mode as follows LOW NOISE MODE The operating sound lowers from about 3 to 5 dB more than the rated value Capacity does not become low even when switched to low noise mode The operating noise is reduced by limiting t...

Страница 36: ...em reaches closer to the target discharge temperature that is calculated from high and low pressure Cooling mode Heating mode 500 pulses basically Initialization conditions Control range operation stop 500 pulses 55 500 pulses 0 pulses 0 pulses 2 4 EXPANSION VALVE CONTROL Cooling Heating Operation mode 40 500 pulses Cooling Heating When power turned on When operation stopped ...

Страница 37: ...ooling oil recovery operation exceeds 3 hours first time 1hour End condition 30 seconds have elapsed since the start and suction temperature low pressure saturation temperature 5deg or 6 minutes have elapsed since the start Operation COMPRESSOR The rotation speed varies depending on the operation state EEV Opening Indoor Outdoor unit Controlled pulse as normal operation mode FAN speed Indoor Outdo...

Страница 38: ...mperature or when 10 minutes have elapsed from the start When the indoor unit connection capacity is 90 or less after 15 minutes have elapsed Defrosting end judgment temperature 0 39 x outdoor temperature 12 7 However 5 to 12 C range If the calculated result is lower than 27 6 the judgment temperature is defined as 27 6 If the calculated result is higher than 6 the judgment temperature is defined ...

Страница 39: ...d 2 times within 40 minutes Pattern reset condition Error reset push button SW executed after power turned on again Compressor stopped permanent stop Error display Starting conditions COMP 25 rps HP 3 3 MPa 25 rps COMP 30 rps HP 3 5 MPa 30 rps COMP Reset conditions Fixed time has elapsed and Fixed time when SV2 ON 30 secs COMP 25 rps HP 3 0 MPa 25 rps COMP 30 rps HP 3 2 MPa 30 rps COMP SV2 ON High...

Страница 40: ...3 minutes have elapsed and low pressure 0 18MPa Reset conditions 3 minutes have elapsed and low pressure 0 22MPa EEV of stopped indoor unit opened quickly 450pls Abnormal Low Pressure Protection Control Low Pressure Sensor starting condition Low pressure 0 16MPa Compressor capacity lowered every 180 secs Low Pressure Protection Stop Low Pressure Sensor Pattern starting condition Low pressure 0 05M...

Страница 41: ...ng 23 5A Frequency Maximum Setting Protection Compressor Pattern starting condition Current value Cooling 23 0A Heating 24 0A Pattern reset condition Current value Cooling 23 0A Heating 24 0A Current Detector Circuit Compressor is stopped when the over currernt protectioncircuit in the inverter PCBoad detects an abnormal current duringthe operation If it repeated 5 times the compressor becomes per...

Страница 42: ......

Страница 43: ...3 INDOOR UNIT OPERATION ...

Страница 44: ......

Страница 45: ...ing operation fan speed is decided by the difference between the room temperature and the set temperature 1 The indoor fan starts operation 5 seconds after the electric expansion valve opens However when the indoor unit just starts its operation or the operation mode is changed from other to DRY and the refrigerant circulation is not stopped the fan will rotate immediately without a delay time of ...

Страница 46: ...dry from the connected indoor units There are 3 priority modes of Neutral Cooling Priority and Heating Priority The operation modes restricted by each of these modes are as follows Priority mode Neutral Cooling priority Heating priority Restricted operation mode No restrictions Heating Cooling dry Neutral Cooling priority Heating priority Cooling priority Heating priority 1 Priority mode decision ...

Страница 47: ...r unit regardless of the current priority mode The priority mode is fixed at either cooling or heating even if the master indoor unit stops Cooling heating switching can be performed by the master indoor unit only 4 Opposite operation mode When the operation mode commanded from an indoor unit remote controller and the operation mode allowed by the system cooling and dry operation for cooling only ...

Страница 48: ...nit by outdoor unit DIP SW 2 Set the master indoor unit by wired remote controller 3 Judge cooling heating by the difference between the master indoor unit s setting temperature and the room temperature Thermostat remains in OFF state for 6 minutes or longer System stops or operation command other than auto changeover operation NO NO Thermostat remains in OFF state for 6 minutes or longer System s...

Страница 49: ... of refrigrant flow The thres hold temperature of stop of refrigrant flow Ts 0 5 C Ts 0 5 C 3 2 4 HEAT Position 1 When using the heating mode set the temperature to a value higher than the current room temperature otherwise the indoor unit will not start the heating operation 3 An example for HEATING TEMPERATURE CONTROL time chart Manual setting During defrosting the OPERATION indicator lamp flash...

Страница 50: ... At tempting to move them manually could result in improper operation in this case stop operation and restart The louvers should begin to operate properly again When used in a room with infants chil dren elderly or sick persons the air direction and room temperature should be considered carefully when making settings COMPACT WALL MOUNTED TYPE CASSETTE TYPE 1 3 4 2 1 2 3 4 Press the VERTICAL AIRFLO...

Страница 51: ...TYPE and COMPACT WALL MOUNTED TYPE 1 3 4 5 2 03 07 1 2 3 4 5 Press the VERTICAL SWING button for more than two seconds The remote controller s Vertical Swing Display will light up In this mode the UP DOWN air direction flaps will swing automat ically to direct the air flow both up and down Example When set to vertical swing 1 3 4 5 2 Press the HORIZONTAL AIRFLOW DIRECTION button The temperature di...

Страница 52: ... button for more than two seconds once and again The remote controller s Horizontal Swing Display will go out Airflow direction will return to the setting before swing was begun Example When set to horizontal swing Range of swing 03 08 The SWING operation may stop temporarily when the air conditioner s fan is not operating or when operating at very low speeds The swing operation is not available d...

Страница 53: ... the drain pump will turn off in 1 hour after the end of indoor heat exchanger frost prevention operation 4 When the water level in the drain pan rises up and then the float switch functions Microcomputer stops the refrigerant circulation and indoor fan motor operation Drain pump operates continuously for 3 minutes after the float switch is turned off Almost condensing water may be drained 5 When ...

Страница 54: ... EEV Control pulse During the above operation a refrigerant noise may be from the indoor unit The icing of the indoor heat exchanger is prevented during the cooling and dry mode operation 1 Starting Condition Compressor is operation more than 3 minutes When Heat exchanger inlet temperature TA continues 4 minutes or more Compressor is operation more than 3 minutes When Heat exchanger outlet tempera...

Страница 55: ...e used when this controller is used together with the remote controller Wired type A beeping sound is made when a signal is received To set the ON OFF timer 1 2 Adjust the OFF or ON time About 5 seconds later the entire display will reappear Press the TIMER MODE button to select OFF TIMER or ON TIMER CANCEL OFF TIMER ON TIMER PROGRAM TIMER OFF ON OFF ON Press the START STOP button to start the air...

Страница 56: ...ng operation dry operation Heating operation When the sleep timer is set the set temperature automatically rises 1 C every hour The set temperature can rise up to a maximum of 2 C Timer setting 60min 1 C 2 C When the sleep timer is set the set temperature sutomatically drops 1 C every 30 minutes The set temperature can drop to a maximum of 4 C 1 C 2 C 3 C 4 C 30min 60min 90min Timer setting ...

Страница 57: ... units Press the Select button to select the indoor unit Press the PROGRAM CLOCK AD JUST button Do not press this button for two sec onds or more otherwise you will en ter the time setting mode Press the Select button to select the indoor unit If all indoor units are selected the times for all of the registered indoor unit timers are set at once Day of the week setting S M T W T F S ALL All indoor...

Страница 58: ... to complete the weekly timer setting flashes for two seconds Setting the timer for the other indoor units Before setting the timer for other indoor units press the ENTER button to confirm the settings The display switches to the next timer Repeat steps to to set the timer for other indoor units 2 6 1 If the Timer Mode DELETE button is pressed during steps to the operat ing time for the selected d...

Страница 59: ...m when the button is pressed 2 Press the DELETE button to cancel the timer mode The timer mode can also be canceled by changing the timer mode using the timer mode button 1 NON STOP OFF TIMER ON TIMER WEEKLY TIMER No display Press the set time buttons to set the time After the time is set the timer will start automatically The amount of time until the OFF timer operates that is displayed on the ti...

Страница 60: ... necessary set the second weekly timer settings in the same way When the operating time is set the mark appears 6 Press the TIMER SET button for 2 seconds or more to complete the weekly timer settings To delete the operating time If the TIMER DELETE button is pressed during steps or the operating time for the selected day will be deleted If all the days are selected the operating times for all of ...

Страница 61: ...he DAY OFF setting is cancelled automatically after the set day has passed Flashing mark indicates the DAY OFF ON OFF ON OFF DAY OFF WEEKLY WEEKLY WEEKLY WEEKLY ON OFF ON OFF DAY OFF To start cancel the WEEKLY timer operation To set the DAY OFF for a holiday 3 6 9 12 15 18 21 The operating time for the current day is displayed ex Operating time 7 00 18 00 Indpnd OFF time 21 00 The independent time...

Страница 62: ...eratures as low as 10 12 and 14 C cannot be set depending on the model SET BACK SU MO TU WE TH FR SA 3 6 9 12 15 18 21 SU MO TU WE TH FR SA 3 6 9 12 15 18 21 ex When setting all days together Temperature setting Press the set temperature buttons to set the temperature The temperature setting range is the same as the range for the operation mode ex Operating time 15 00 22 00 5 Repeat steps and Pres...

Страница 63: ...4 TROUBLE SHOOTING ...

Страница 64: ...Timer LED Timer Continuous lighting Operation LED Operation Flashing Pattern Indication Lamp Indication type 04 01 Opposite Operation Mode 4 1 NORMAL OPERATION 4 TROUBLESHOOTING 4 1 1 Indoor Unit Display Filter Filter LED Continuous lighting ON OFF ON OFF 1 sec 1 sec 6 sec 2 sec ON OFF ON OFF Operation LED Timer LED Filter LED Maintenance Mode 1 sec 1 sec 1 sec 1 sec 3 sec 1 sec ON OFF 1 sec 1 sec...

Страница 65: ...L OW N OISE Blinking Description POWER LED101 ERROR LED102 ON ON OFF OFF P ROTECT 4 ON OFF 1 sec 1 sec Peak Cut Mode Starting condition Discharge temp fixed value 115 C Release condition 3 minutes have elapsed and discharge temperature 80 C Starting condition Compressor temp fixed value 110 C Release condition 3 minutes have elapsed and discharge temperature 80 C Starting condition Low pressure 0 ...

Страница 66: ...4 times flash 2 3 times flash 1 times flash Continuous flash 2 times flash 3 times flash 10 Continuous flash 1 times flash 3 times flash Continuous flash 4 times flash 1 times flash 11 Continuous flash 2 times flash 1 times flash 9 Trouble shooting Filter LED Timer LED Operation LED Depending on contents of Outdoor unit it may not indicate Refer to TROUBLE LEVEL OF SYSTEM Error Indication Flashing...

Страница 67: ...play is changed by SELECT short press ENTER short press ENTER short press ENTER short press ENTER long press Short press less than 3 seconds Long press more than 3 seconds Annunciation Type of errors Address SELECT short press display change SELECT short press display change If some error is newly occured or resolved during transition it is reflected after going back to Annunciation Only in the ca...

Страница 68: ... 32 31 30 29 28 27 26 25 24 23 21 2 8 1 5 U 1 6 2 8 6 2 3 6 2 6 6 3 1 6 7 2 6 9 1 2 8 4 7 2 1 7 3 3 7 4 1 7 5 1 7 7 1 8 2 1 8 2 2 8 3 2 8 4 1 8 6 1 8 6 3 8 6 4 7 1 1 Compressor Temp Sensor Error TH10 Discharge Temp Sensor Error TH1 22 Outdoor unit FAN motor under voltage Lack of DC Voltage Outdoor Unit Fan Motor Lock Error Start up Error Compressor Motor Loss of Synchronization Trip Detection Inve...

Страница 69: ...x Error code display Faulty unit No Remote controller address ERROR CODE DISPLAY GROUP REMOTE CONTROLLER The air conditioning system must be inspected if error code appears on the timer and Clock Display or the operation lamp is flashing Model code Error code Ex Error code display ERROR CODE DISPLAY Model code Outdoor unit Indoor unit Group remote controller Convertor 1 1 If an error occurs the fo...

Страница 70: ... 4 A 5 Low Pressure Abnormal High Pressure Abnormal Compressor Temperature Abnormal Discharge Temperature Abnormal 7 1 7 2 7 3 7 4 7 5 7 7 Heat Sink Temperature Sensor Error Suction Gas Temperature Sensor Error Outdoor Temperature Sensor Error Heat Ex liquid pipe Temperature Sensor Error Compressor Temperature Sensor Error Discharge Temperature Sensor Error 4 2 6 Error Code List for Group Remote C...

Страница 71: ...mpressor stop High pressure switch error Inverter compressor stop Inverter error Inverter compressor stop Heat sink temperature abnormal Inverter compressor stop Inverter compressor start up error Inverter compressor stop Trip detection Inverter compressor stops Rush current limiting resister Temp rise protection Inverter compressor stop Comp motor loss of synchronization Inverter compressor stop ...

Страница 72: ...n not be judged without operating the system and the serviceman would not be able to check it if the system power is turned off before visiting the site for repair In Error release you need to operate push switch and apply Error reset F3 40 after power restart Trouble Level 1 2 Abnormal LED indication Outdoor unit stops Need to repair secondary accident is possible Not available High pressure abno...

Страница 73: ......

Страница 74: ...ective contact or leak current in the power supply circuit Noise Check if there is any equipment causing harmonic wave near electric line Neon bulb or electric equipment that may cause harmonic wave Check the complete insulation of grounding Check Point 3 Replace Controller PCB Change Controller PCB and set up the original address Check Point 1 1 Reset Power Supply Check Point 2 Check Indoor Unit ...

Страница 75: ...Installation Manual OK Check power supply voltage AC230V between Indoor unit terminal 1 and 2 Check connection of Connector any lose connector or incorrect wiring Check any shortage or corrosion on PCB OK AC Check Point 1 1 Reset Power Supply Does abnormal LED indication show again Check Point 1 2 Check outside cause Voltage drop or noise etc Instant drop Check if there is a large load electric ap...

Страница 76: ...ge drop or noise etc Instant drop Check if there is a large load electric apparatus in the same circuit Momentary power failure Check if there is a defective contact or leak current in the power supply circuit Noise Check if there is any equipment causing harmonic wave near electric line Neon bulb or electric equipment that may cause harmonic wave Check the complete insulation of grounding Check P...

Страница 77: ...ector or incorrect wiring 6 5 35 8 0 30 10 0 12 5 15 8 20 1 25 2 33 6 Resistance Value 25 20 15 10 5 0 Temperature C 3 5 4 3 5 3 Resistance Value 50 45 40 Temperature C OK OK Check Point 3 Check voltage of Controller PCB DC5 0V Make sure circuit diagram of each indoor unit and check terminal voltage at Thermistor DC5 0V Small size Wall mount Schematic Diagram Direct soldering to PCB If the voltage...

Страница 78: ...ection Check if thermistor cable is open Reset Power when reinstalling due to removed connector or incorrect wiring OK Check Point 2 Remove connector and check Thermistor resistance value Check Point 3 Check voltage of Controller PCB DC5 0V Make sure circuit diagram of each indoor unit and check terminal voltage at Thermistor DC5 0V Small size Wall mount Schematic Diagram Direct soldering to PCB I...

Страница 79: ...d check Thermistor resistance value Resistance Value Temperature C 32 4 35 40 0 30 49 8 62 5 79 1 100 9 129 8 168 6 25 20 15 10 5 0 Resistance Value Temperature C 17 8 21 2 26 3 50 45 40 04 16 OK Check Point 3 Check voltage of Controller PCB DC5 0V Make sure circuit diagram of each indoor unit and check terminal voltage at Thermistor DC5 0V Small size Wall mount Schematic Diagram Direct soldering ...

Страница 80: ...ch and check ON OFF switching operation by using a meter If Float switch is defective replace it ON OFF OK Forecast of Cause 1 Float switch defective 2 Shorted connector wire 3 Controller PCB defective 4 Drain pump defective Check Point 2 Check Connector CN 1 Wire Check loose contact of CN1 shorted wire pinched wire Replace Float switch if the wire is abnormal Check Point 3 Check Controller PCB If...

Страница 81: ... replace it Check Point 1 Check rotation of Fan Rotate the fan by hand when operation is off Check if fan is caught dropped off or locked motor If Fan or Bearing is abnormal replace it Check Point 3 Check ambient temp around motor Check excessively high temperature around the motor If there is any surrounding equipment that causes heat Upon the temperature coming down restart operation Check Point...

Страница 82: ...r Unit Operation LED 1 times Flash Timer LED 2 Times Flash Filter LED Continuous Flash Outdoor Unit E 5 U 1 Error LED Continuous Flash Remote Controller 1 2 Detective Actuators Indoor unit Controller PCB circuit Wired Remote Control Detective details More than 1 time of Token Communication between wired remote controllers is received but it was not received more than 1 minute OK DC Forecast of Cau...

Страница 83: ...oint 3 Replace Communication PCB Replace Communication PCB If the symptom does not change replace Controller PCB and set up the original address Check Point 1 2 Check outside cause such as noise Check the complete insulation of the grounding Check if there is any equipment that causes harmonic wave near the power cable Neon light bulb or any electronic equipment which causes harmonic wave Check Po...

Страница 84: ...t which causes harmonic wave And check the complete insulation of grounding If the same symptom does not reappear after resetting the power possibility of noise is high Check Point 1 Check the connection After turning off the power check and correct followings Is Indoor Communication PCB loose Check loose or removed connection of communication line between Indoor and Outdoor unit When the signal a...

Страница 85: ...SET 3 1 SET 3 2 Master OFF OFF OK Check Point 3 Replace Main PCB Change Main PCB and set up the original address 4 3 2 Trouble Shooring With Error Code OUTDOOR UNIT 1 Wrong DIP SW setting 2 Power supply defective 3 Main PCB defective Indoor Unit No Display Outdoor Unit Flashing 0 5 sec ON and OFF Error Code No Display 04 22 Trouble shooting 12 Indicate or Display Detective Actuators Detective deta...

Страница 86: ...Check if momentary open was not generated Check if ground is connection correctly or there are no related cables near the power line Check Point 2 Check the indoor unit power supply Main power ON check Power cable connection and open check Check Point 3 Check the communication line connection No communication for 180 seconds or more from an indoor unit which received communication once and no outd...

Страница 87: ...e connection Detective Actuators Forecast of Cause No communication for 180 seconds or more from all indoor units that once received communication Check Point 4 Check the Terminal resistor setting Terminal resistor setting check Check Point 6 Replace Main PCB outdoor unit in door unit Check Point 5 Check the communication PCB outdoor unit indoor unit Change Main PCB and set up the original address...

Страница 88: ...open was not generated Check if ground is connection correctly or there are no related cables near the power line Check Point 2 Replace Main PCB Change Main PCB and set up the original address Check Point 1 1 Turn the power on agaun Error displayed again Indoor Unit Operation LED 9 times Flash Timer LED 15 Times Flash Filter LED Continuous Flash Outdoor Unit E 62 3 Error Code 62 04 25 Trouble shoo...

Страница 89: ...CB defective Check Point 4 Replace Inverter PCB Replace Inverter PCB Check if ground is connection correctly or there are no related cables near the power line Check Point 1 1 Turn the power on again Error displayed again Check Point 1 2 Noise Communication not received from Inverter PCB for 10 seconds or more Indoor Unit Operation LED 9 times Flash Timer LED 15 Times Flash Filter LED Continuous F...

Страница 90: ... mode 35 execution and the power was turned back on Set contents sum value memorized in EEPROM and sum value calculated based on the set contents read from EEPROM do not match Regarding the sum value only the contents set in the push button SW setting mode F2 shall be the objective Reset the setting of F2 setting mode by push button SW To clear the setting of F2 by Field setting all clear Check Po...

Страница 91: ... correctly or there are no related cables near the power line Check Point 2 Check the wiring Power supply to Filter PCB INV to Inverter PCB Connector and wiring connection state check Cable open check Check Filter PCB INV and Inverter PCB Check Point 1 1 Turn the power on again Error displayed again Check Point 3 Check Filter PCB INV and Inverter PCB Indoor Unit Operation LED 9 times Flash Timer L...

Страница 92: ...r PCB INV to Inverter PCB Connector and wiring connection state check Check Point 3 Check Main PCB Check Main PCB Power supply Check Point 4 Replace Inverter PCB Replace Inverter PCB 1 Noise momentary power failure voltage drop 2 Power supply to Filter PCB INV to Inverter PCB wiring disconnection open 3 Main PCB defective 4 Inverter PCB defective Momentary power failure received from Inverter PCB ...

Страница 93: ...ive 4 Main PCB defective Check if ground is connection correctly or there are no related cables near the power line Check Point 4 Replace Main PCB Change Main PCB and set up the original address Check Point 1 1 Turn the power on again Error displayed again Check Point 2 Check the communication PCB connection Communication PCB connection check Check Point 3 Check the communication PCB Communication...

Страница 94: ...pen check Check Point 2 Check the thermistor Thermistor characteristics check Disconnect the thermistor from the PCB and check For the thermistor characteristics refer to the Service Parts Information 22 Check Point 3 Check voltage of Main PCB DC5 0V Main PCB CN141 1 2 voltage value 5V Remove the thermistor from Main PCB check the voltage If the voltage does not appear replace Main PCB and set up ...

Страница 95: ...e open check Check Point 2 Check the thermistor Thermistor characteristics check Disconnect the thermistor from the PCB and check For the thermistor characteristics refer to the Service Parts Information 22 Check Point 3 Check voltage of Main PCB DC5 0V Main PCB CN141 5 6 voltage value 5V Remove the thermistor from Main PCB check the voltage Compressor temperature sensor 1 CN141 5 6 Indoor Unit Op...

Страница 96: ...check For the thermistor characteristics refer to the Service Parts Information 22 Check Point 3 Check voltage of Main PCB DC5 0V Main PCB CN143 3 4 voltage value 5V Remove the thermistor from Main PCB check the voltage Heat exchanger liquid temperature sensor CN143 3 4 Indoor Unit Operation LED 9 times Flash Timer LED 15 Times Flash Filter LED Continuous Flash Outdoor Unit E 73 3 Error Code 73 If...

Страница 97: ...e PCB and check For the thermistor characteristics refer to the Service Parts Information Check Point 3 Check voltage of Main PCB DC5 0V Main PCB CN144 1 3 voltage value 5V Remove the thermistor from Main PCB check the voltage Outdoor temperature sensor CN144 1 3 Indoor Unit Operation LED 9 times Flash Timer LED 15 Times Flash Filter LED Continuous Flash Outdoor Unit E 74 1 Error Code 74 If the vo...

Страница 98: ...istor from the PCB and check For the thermistor characteristics refer to the Service Parts Information 22 Check Point 3 Check voltage of Main PCB DC5 0V Main PCB CN143 1 2 voltage value 5V Remove the thermistor from Main PCB check the voltage Suction gas temperature sensor CN143 1 2 Indoor Unit Operation LED 9 times Flash Timer LED 15 Times Flash Filter LED Continuous Flash Outdoor Unit E 75 1 Err...

Страница 99: ...r Unit Operation LED 9 times Flash Timer LED 15 Times Flash Filter LED Continuous Flash Outdoor Unit E 77 1 Error Code 77 04 36 Trouble shooting 26 Indicate or Display Detective Actuators Detective details OUTDOOR UNIT Error Method 1 Inverter PCB failure Forecast of Cause If this error is displayed replace Inverter PCB ...

Страница 100: ...istor Thermistor characteristics check Disconnect the thermistor from the PCB and check For the thermistor characteristics refer to the Service Parts Information 22 Check Point 3 Check voltage of Main PCB DC5 0V Main PCB CN142 5 6 voltage value 5V Remove the thermistor from Main PCB check the voltage Sub cooling heat exchanger gas inlet temperature sensor CN142 5 6 Indoor Unit Operation LED 9 time...

Страница 101: ...mistor Thermistor characteristics check Disconnect the thermistor from the PCB and check For the thermistor characteristics refer to the Service Parts Information 22 Check Point 3 Check voltage of Main PCB DC5 0V Main PCB CN142 7 8 voltage value 5V Remove the thermistor from Main PCB check the voltage Sub cooling heat exchanger gas outlet temperature sensor CN142 7 8 Indoor Unit Operation LED 9 ti...

Страница 102: ...ate check Cable open check Check Point 2 Check the thermistor Thermistor characteristics check Disconnect the thermistor from the PCB and check For the thermistor characteristics refer to the Service Parts Information 22 Check Point 3 Check voltage of Main PCB DC5 0V Main PCB CN142 3 4 voltage value 5V Remove the thermistor from Main PCB check the voltage Liquid pipe temperature sensor 2 CN142 3 4...

Страница 103: ...pply section current sensor section 4 Inverter PCB defective Check Point 1 Filter PCB to Inverter PCB current sensor wiring connection state Connector and wiring connection state check Cable open check Connector connection state check Cable open check Indoor Unit Operation LED 9 times Flash Timer LED 15 Times Flash Filter LED Continuous Flash Outdoor Unit E 84 1 Error Code 84 04 40 Current Sensor ...

Страница 104: ...charge pressure sensor connector disconnection open 2 Discharge pressure sensor defective 3 Main PCB defective OK Check Point 1 Check the discharge pressure sensor connection state Connector connection state check Cable open check Check Point 2 Check the discharge pressure sensor Sensor characteristics check For the characteristics of the discharge pressure sensor refer to the Service Parts Inform...

Страница 105: ...lapsed since the outdoor unit power was turned on and pressure sensor detected value 5 0V was detected 1 Suction pressure sensor connector disconnection open 2 Suction pressure sensor defective 3 Main PCB defective OK Check Point 1 Check the suction pressure sensor connection state Connector connection state check Cable open check Check Point 2 Check the suction pressure sensor Sensor characterist...

Страница 106: ... Check Point 1 Check the high pressure switch connection state Connector and wiring connection state check Cable open check Check Point 2 Check the high pressure switch characteristics Switch characteristics check For the characteristics of high pressure switch refer to the Service Parts Information Check Point 3 Replace Main PCB Change Main PCB and set up the original address Outdoor Unit E 86 4 ...

Страница 107: ...stat After the end of the 1st set the 2nd set is not started if all the compressors in the same refrigerant system are not temporarily stopped Wiring connection state check Cable open check Check Point 3 Check the Inverter compressor Inverter compressor check Refer to Service Parts Information Check Point 2 Check the Inverter PCB Inverter PCB check Refer to Service Parts Information Check Point 1 ...

Страница 108: ...eat sources Discharged air not sucked in Check Point 3 Check the Inverter compressor Check Inverter compressor Check Point 2 Check the Inverter PCB Inverter PCB check Refer to Service Parts Information Check Point 1 Check the outdoor unit fan operation heat exchanger ambient temperature Indoor Unit Operation LED 9 times Flash Timer LED 15 Times Flash Filter LED Continuous Flash Outdoor Unit E 94 1...

Страница 109: ...ed again within 40 seconds after restarting Check Point 2 Check the Inverter compressor Inverter compressor check Refer to Service Parts Information Check Point 1 Check the Inverter PCB Inverter PCB check Refer to Service Parts Information Indoor Unit Operation LED 9 times Flash Timer LED 15 Times Flash Filter LED Continuous Flash Outdoor Unit E 95 5 Error Code 95 04 46 Trouble shooting 36 Indicat...

Страница 110: ...peration check Check Point 4 Check Main PCB Drive circuit output check Between Pin No 3 and Pin No 2 on CN 116 CN117 DC 13 6 16 5 V Check if speed can be detected If replace Main PCB and and set up orignal address Check Point 2 Check the motor wiring connector disconnection open Check for motor wiring connector disconnection open Check Point 3 Fan motor defective Check Point 1 Fan rotation state c...

Страница 111: ...itor check DC voltage detection circuit check If replace Main PCB and and set up orignal address Check Point 2 Check the power line Power ON Temporary voltage drop not generated Momentary open circuit not generated Check Point 1 Check the Power supply Indoor Unit Operation LED 9 times Flash Timer LED 15 Times Flash Filter LED Continuous Flash Outdoor Unit E 97 4 Error Code 97 04 48 Trouble shootin...

Страница 112: ...nt 5 Replace the fan motor Ambient temperature not raised by the effect of other heat sources Discharged air not sucked in Check Point 4 Check the static pressure Check if static pressure is set correctly Check if static pressure is not higher than the specified value Check Point 3 Check the ambient temperature Indoor Unit Operation LED 9 times Flash Timer LED 15 Times Flash Filter LED Continuous ...

Страница 113: ...Times Flash Filter LED Continuous Flash Outdoor Unit E 9A 1 EEV1 E 9A 2 EEV2 Error Code 9A 04 50 1 EEV coil lose connection Trouble shooting 40 Indicate or Display Detective Actuators Detective details OUTDOOR UNIT Error Method Forecast of Cause Check if the DC 12 is on between the pin No 1 of CN116 CN117 and Pin No 2 of CN132 GND Disconnect the wire of EEV when you check the output of EEV OK Chec...

Страница 114: ...eturn Refer to Service Parts Information 14 15 16 Check Point 3 Check the outdoor unit fan heat exchanger Check for foreign matter at heat exchanger Check if fan can be rotated by hand Motor check Check Point 2 Check the EEV strainer Check Point 5 Check the refrigerant amount Leak check EEV EEV1 EEV2 open Strainer clogging check before EEV 3Way Valve oil return Refer to Service Parts Information 1...

Страница 115: ...h Filter LED Continuous Flash Outdoor Unit E A3 1 Error Code A3 04 52 Cooling operation OK Heating operation Check Point 1 Check if 3 way valve gas side is open EEV EEV1 EEV2 indoor unit EEV open Strainer clogging check before and after EEV 3Way Valve oil return Refer to Service Parts Information 14 15 16 Check Point 2 Check the EEV strainer EEV EEV1 EEV2 open Strainer clogging check before and af...

Страница 116: ...charge pressure sensor characteristics check For the characteristics of the discharge pressure sensor refer to Service Parts Information Check Point 6 Check the discharge pressure sensor Check Point 7 Check the refrigerant amount Refrigerant charged amount check Check Point 5 Check the solenoid valve SV2 Solenoid valve operation check Indoor Unit Operation LED 9 times Flash Timer LED 15 Times Flas...

Страница 117: ...s Discharged air not sucked in Check Point 2 Check the outdoor unit fan operation heat exchanger ambient temperature High pressure switch 1 characteristics check For the characteristics of the high pressure switch 1 refer to Service Parts Information Check Point 6 Check high pressure switch 1 Check Point 7 Check the refrigerant amount Refrigerant charged amount check Check Point 5 Check the soleno...

Страница 118: ...range Outdoor unit EEV1 operation check Strainer not clogged Refer to Service Parts Information Check Point 4 Check the outdoor unit EEV strainer clogging Indoor unit EEV operation check Strainer not clogged Check Point 4 Check the indoor unit EEV strainer clogging Suction pressure sensor characteristics check For the characteristics of the suction pressure sensor refer to Service Parts Informatio...

Страница 119: ...Detective details OUTDOOR UNIT Error Method Forecast of Cause OK OK OK 1 Signal amplifier power supply defective 2 Signal amplifier overconnected 3 Signal amplifier auto address wrong setting 4 Noise momentary open Outdoor unit Main PCB Check Point 1 Check signal amplifier unit power supply Check signal amplifier unit power supply Check Point 2 Check the signal amplifier number connection Check if...

Страница 120: ...troller PCB defective Check Point 2 Noise momentary open voltage drop Check if temporary voltage drop was not generated Check if momentary open was not generated Check if ground is connection correctly or there are no related cables near the power line Check Point 2 Check the indoor unit power supply Main power ON check Power cable connection and open check Check Point 3 Check the communication li...

Страница 121: ...c wave near electric line Neon bulb or electric equipment that may cause harmonic wave Check the complete insulation of grounding Check the fuse and thermal fuse OK NG Replace the fuse or thermal fuse Check if the power supply terminals section is shorted NG OK OK TROUBLE SHOOTING WITH NO ERROR CODE Check Voltage of power supply Check AC230V appears at Indoor Unit Terminal 1 2 Power Supply AC For ...

Страница 122: ...ower failure Check if there is a defective contact or leak current in the power supply circuit Noise Check if there is any equipment causing harmonic wave near electric line Neon bulb or electric equipment that may cause harmonic wave Check the complete insulation of grounding Check the fuse on the Filter PCB OK Replace the fuse Recheck if the power supply terminals section is shorted Note Always ...

Страница 123: ...owings Isn t Communication PCB of Indoor Unit removed Is there loose or removed communication line of Indoor Unit and Outdoor Unit Check Terminator DIP SW SET 5 is installed on Outdoor Main PCB Check loose or removed communication line between each Outdoor Unit Check loose Communication PCB of each Outdoor Unit OK OK OK DC Forecast of Cause 1 Setting Connection failure 2 Outside cause 3 Electrical...

Страница 124: ...rect sunlight Check Point 5 Check Refrigeration Cycle Check if Strainer is clogged Refer to the figure at right Measure Gas Pressure and if there is a leakage correct it When recharging the refrigerant make sure to perform vacuuming and recharge the specified amount Check EEV Refer to Service Parts Information Check Solenoid Valve Refer to Service Parts Information Check Compressor Refer to Servic...

Страница 125: ...eck Compressor Refer to Service Parts Information OK OK Is Main Unit installed in stable condition Is the installation of Air suction grille and front panel normal In case of Duct type Is Static Pressure range normal Refer to Data Technical Manual Is Main Unit installed in stable condition Is Bell Mouth installed normally OK Is Float Switch defective Check Float Switch Refer to Trouble Shooting Is...

Страница 126: ... if connection cable is open OK Cause 4 Ext Switch Controller is defective Replace External Switch Controller OK Error Contents The abnormality in connection of remote controller cable Symptom LED repeats flashing 0 5sec ON 0 5sec OFF Condition Communication with Indoor unit has been cut off for longer than 1 minute OK Cause 4 External noise OK Cause 5 Ext Switch Controller is defective Replace Ex...

Страница 127: ...value between the terminals at the time of input OPEN More than 50 SHORT Less than 1 OK Cause 5 Ext Switch Controller is defective Replace External Switch Controller OK Cause 1 Connection cable is defective or open Check installation of connection cable Check if connection cable is open Cause 2 Defective insertion or open connection of the cable between External Switch Controller terminal and PCB ...

Страница 128: ...stem design is normal OK Cause 2 External noise OK Cause 4 System Design mistake Check following items Refer to Installation Manual 1 Installation location of Terminal Resistor Only 1 location on NS 2 Cable length Within 500m maximum on NS 3 Number of units connected Up to 64 units maximum on NS 4 Communication cable specification Use specified type 5 Number of Signal Amplifier installed Up to 8 u...

Страница 129: ...om Error display C 1 No operation Details Condition of occurrence Communication error between CPU and Network Driver IC Release condition Communication is normal between CPU and Network Driver IC Cause 3 Signal Amplifier is defective Replace Signal Amplifier Cause 1 External noise Upon pressing RESET button SW7 or turning on power proceed as follows 1 If error did not appear it is not a defect of ...

Страница 130: ...oise source OK Error Contents Communication Error A Symptom Error display D14 Flashing or Lighting No operation Cause 1 External noise Upon pressing RESET button SW7 or turning on power proceed as follows 1 If error did not appear it is not a defect of PCB Remove the surrounding noise source 2 If error occurs again check followings other than removing surrounding noise source OK Details Condition ...

Страница 131: ...e source Remove the surrounding noise source YES OK NO Trouble shooting 65 Error Contents Power Supply Error Symptom No display Details Condition of occurrence Normal power is not supplied 7 segment indicator is defective Release condition Normal power is supplied 7 segment indicator is normal Cause 1 Power supply cable installation is defective or open Check following installation and reset the p...

Страница 132: ...hecked the power supply is reset Check connection cable wire between Network Convertor and Connected Remote Controller Check connection between Control PCB and Terminal Cause 3 Incorrect setting of Network Convertor s DIP SW103 1 to 4 For Convertor setting of Group Remote Controller Check Network Convertor PCB DIP SW103 1 to 4 ON OK OK Cause 4 Defective Remote Controller or Network Convertor Repla...

Страница 133: ...stered at Replace Group Remote Controller is 3 refrigerant circuits or more even though connected to one converter Make 2 refrigerant circuits or less and wait 2 minutes YES NO Replace Network Convertor Replace Group Remote Controller Condition of occurrence Indoor unit registration is 3 refrigerant circuits or more Release condition Indoor unit registration is 2 refrigerant circuits or less Cause...

Страница 134: ...ing noise source Remove the surrounding noise source YES OK NO Trouble shooting 70 Error Contents Power Supply Error Symptom No display Details Condition of occurrence Normal power is not supplied 7 segment indicator is defective Release condition Normal power is supplied 7 segment indicator is normal Cause 1 Power supply cable installation is defective or open Check following installation and res...

Страница 135: ... Connected Remote Controller Check connection between Control PCB and Terminal Cause 3 Incorrect setting of Network Convertor s DIP SW107 2 Wired RC Validity setting Check Network Convertor PCB DIP SW107 2 Cause 4 Incorrect selection of Remote Controller Check connection Remote Controller Is it specified with the Installation Manual of Network Convertor OK Cause 5 Incorrect setting of Remote Contr...

Страница 136: ...Check DIP SW103 1 to 8 of Network Convertor Indoor unit type RC type number of Indoor units connected Check Indoor unit type and RC type of all Indoor units connected to Network Convertor Cause 6 Defective PCB of Indoor unit or Network Convertor Replace PCB of Controller PCB or Network Convertor Cause 3 Power to Indoor unit is shut down Check the power to Indoor unit Cause 1 External noise After p...

Страница 137: ...Check DIP SW103 1 to 8 of Network Convertor Indoor unit type RC type number of Indoor units connected Check Indoor unit type and RC type of all Indoor units connected to Network Convertor Cause 6 Defective PCB of Indoor unit or Network Convertor Replace PCB of Controller PCB or Network Convertor Cause 3 Power to Indoor unit is shut down Check the power to Indoor unit Cause 1 External noise After p...

Страница 138: ...ogram performed an abnormal control Error of inside information of EEPROM initial setting of Network Converor PCB was not normally performed Release condition Micon has been reset and the control of Network Convertor became normal When error disappeared and Network Convetor becomes available to control Cause 1 External noise Check continuation of error 1 If error is released automatically it is no...

Страница 139: ...ashing Details Condition of occurrence When EEPROM can not be written or the control port does not operate Release condition Power is reset 4 Group Remote Controller UTY CGGY CGGG Trouble shooting 76 Cause 1 Remote Controller is defective Replace Group Remote Controller 04 76 ...

Страница 140: ...he key to enter the function selection process Trouble shooting 77 Trouble shooting 78 Cause 1 Connection failure Check power to the convertor Check connection of remote control line between controller and convertor OK Cause 1 Setting failure Register Indoor units again by entering to the function selection mode Keep pressing TIME key and TIME key Refer to the installation manual for the remote co...

Страница 141: ...e convertor power line is disconnected Check connection between controller and the convertor Instant drop Check if there is a large load electric apparatus in the same circuit Momentary power failure Check if there is a defective contact or leak current in the power supplycircuit Noise Check if there is any equipment causing harmonic wave near electric line Neon bulb or electric equipment that may...

Страница 142: ...e 1 Remote Controller internal thermistor trouble Replace Group Remote Controller Cause 2 Check outside cause Voltage drop or noise etc Instant drop Check if there is a large load electric apparatus in the same circuit Momentary power failure Check if there is a defective contact or leak current in the power supply circuit Noise Check if there is any equipment causing harmonic wave near electric l...

Страница 143: ...B trouble OK OK OK OK Check cable Check indoor unit power supply Check if the indoor unit remote controller addresses are sequentially set from 0 Replace remote controller Change Controller PCB and set up the original address Remove the surrounding noise Condition of occurrence When signal from indoor unit does not enter t enter Release condition When signal from indoor unit entered 04 80 Indoor U...

Страница 144: ...indoor unit power supply For the check and modification methods refer to the remote controller including external SW installation manual When there is 1 remote controller check whether or not it is set as the master remote controller When there are 2 remote controllers check if one side is the master remote controller and the other side is the slave remote controller When there are 1 remote contro...

Страница 145: ...to the terminal of the undetected unit Using Service Tool perform scan changing the network segment where the Service Tool is connected and localize the mistaken network segment Start from the network segment where the undetected unit exists Specify priority scan when possible OK Check the following items and fix appropriately if mistaken 1 1 and only 1 Terminal Resistor is connected for each netw...

Страница 146: ...ure the defect of Compressor can be considered Compression part broken or valve defective In case of constant speed compressor check connection and winding resistance Check if Protector is operated Refer to the next page In case of inverter compressor check Filter PCB Inverter PCB connection of Compressor and winding resistance Refer to the next page If there is no failure the defect of Compressor...

Страница 147: ...tention If Check 1 2 are normal make sure the following points 1 Check AC voltage among each terminals from filter PCB INV to Diode Bridge Rated voltage among L and N If it does not appear check the power supply terminal 2 Check Voltage from Main PCB to Inverter PCB DC13 5 16 5V between terminals of CN126 1 2 connector and DC 12 0 8 0 V between terminals of CN126 3 2 connector of Main PCB If it do...

Страница 148: ...h pressure low pressure connected to the connector of the Main PCB 9 Is there a short between pins 1 3 of the Main PCB side connector Replace Main PCB YES YES NO NO Replace Main PCB Check Main PCB 2 YES 6 Is there a open or short between the two ends of the resistance R005 NO NO Replace Main PCB Check Main PCB 3 YES 7 Is there a short between each terminals of Diode D006 Electric parts check Is th...

Страница 149: ...ck Inverter PCB 4 10 Disconnect the connection wires 8 pin connector between the Inverter PCB Main PCB 11 Is there a short between Inverter PCB side connector pins 1 2 and 2 3 Inverter PCB side short circuit Replace Inverter PCB Filter PCB side short circuit Replace Filter PCB YES Check Inverter PCB 5 12 Disconnect the connection wires 3 pin connector between the Inverter PCB Filter PCB 13 Is ther...

Страница 150: ...etween the following terminals Yellow wire P Fasten terminals U V W Blue wire N Fasten terminals U V W Set the tester to the Diode mode and measure the voltage value between the following terminals Judge the result of as follows All 6 points several M or greater Normal 1 or more points several k to short Defective All 6 points several 0 3V to 0 7V Normal 1 or more points under 0 1V or over load De...

Страница 151: ... 1 Appearance check Check Point 2 Electric check Set the tester to the Resistance mode and check for open short between both ends of the reactor wire or connector Judge the result of as follows Short Normal Open Abnormal open No fissures breaks damage etc at the body and winding section terminals section 04 89 ...

Страница 152: ...ts Stripped threads deformation damage etc No short between adjacent terminals Conducts before and after same terminal Not clogged with foreign matter Check Point 1 Appearance check Check Point 2 Electric check No fissures breaks damage etc at the body and terminals section 04 90 ...

Страница 153: ...1 Check Connections Check Connectors Loose connector or open cable Duct Small Wall mount Cassette Wall mount Floor Ceiling Ceiling Check Point 3 Check Voltage from Controller PCB Remove Connector and check Voltage DC12V If it does not appear replace Controller PCB Check Point 4 Check Noise at start up Turn on Power and check operation noise If an abnormal noise does not show replace Controller PCB...

Страница 154: ... 6 Check Strainer Strainer normally does not have temperature difference between inlet and outlet as shown in 1 but if there is a difference as shown in 2 there is a possibility of inside clogged In this case replace Strainer 1 2 If it is open it has no temp difference between Inlet and Outlet Pipe In Pipe Out CLOSE Example Hot GUS Pipe In Pipe Out OPEN Example Hot GUS 04 92 ...

Страница 155: ...not show replace Controller PCB Pipe In Pipe Out Pipe In Pipe Out Check Point 6 Check Strainer Strainer normally does not have temperature difference between i nlet and outlet as shown in 1 but if there is a difference as shown in 2 there is a possibility of inside clogged In th is case replace Strainer 1 2 Check Point 5 Check Opening and Closing Operation of Valve When Valve is closed it has a te...

Страница 156: ...peration noise If an abnormal noise does not show replace Controller PCB Pipe In Pipe Out Pipe In Pipe Out Check Point 6 Check Strainer Strainer normally does not have temperature difference between i nlet and outlet as shown in 1 but if there is a difference as shown in 2 there is a possibility of inside clogged In th is case replace Strainer 1 2 Pipe In Pipe Out CLOSE Example Liquid Refrigerant ...

Страница 157: ...LENOIDE COIL SOLENOIDE COIL Normal Operation Pipe In TEMP Hi Pipe Out TEMP Normal Protection Function Pipe In TEMP Pipe Out TEMP OPEN CLOSE Check Point 4 Check opening closing operation of Valve Depending on either during operation or protection control check if Valve is operating normally When Valve opens there is no temperature difference between Inlet and Outlet 1 2 If the valve closes by remov...

Страница 158: ...s not proper replace 4 way valve HOT GAS HOT GAS HOT GAS HOT GAS Check Point 4 Check Voltage from Controller PCB ON OFF CN105 BLUE SOLENOIDCOIL 4WV BLUE 1 1 2 2 Check Point 1 Check Circuit connection Check Point 2 Check Solenoid Coil SERVICE PARTS INFORMATION 12 4 WAY VALVE Remove CN6 from PCB and check the resistance value of coil Resistance Value 1 7K If it is Open or abnormal resistance value r...

Страница 159: ... Type Check each winding resistance of the motor If Resistance value is abnormal replace motor Red Pink Pink Violet Violet Blue Red Black White Red Lead wire 47 1 8 27 4 8 8 00 8 8 00 8 8 00 8 Resistance value AC Thermal protector Pr VIOLET Low BLUE S Lo PINK Med RED Hi BLACK WHITE 150 C at 20 C Check Point ARXB45LATH Low Static pressure Duct Type Check each winding resistance of the motor If Resi...

Страница 160: ...ance value AC Thermal protector Pr VIOLET Low BLUE S Lo PINK Med RED Hi BLACK WHITE 150 C at 20 C Check Point ARXA36 45LATH Duct Type Check each winding resistance of the motor If Resistance value is abnormal replace motor Red Pink Pink Violet Violet Blue Red Black White Red Lead wire 20 1 8 13 8 8 6 50 8 6 50 8 6 50 8 Resistance value AC Thermal protector Pr VIOLET Low BLUE S Lo PINK Med RED Hi B...

Страница 161: ...nce of the motor If Resistance value is abnormal replace motor Red Pink Pink Violet Violet Blue Red Black White Red Lead wire 322 8 8 255 8 100 7 8 103 8 53 8 Resistance value AC Thermal protector Pr VIOLET Low BLUE S Lo PINK Med RED Hi BLACK WHITE 140 C at 20 C Check Point ARXB12LALH Compact Duct Type Check each winding resistance of the motor If Resistance value is abnormal replace motor Red Pin...

Страница 162: ...stance value AC Thermal protector Pr VIOLET Low BLUE S Lo PINK Med RED Hi BLACK WHITE 140 C at 20 C Check Point ARXB18LALH Compact Duct Type Check each winding resistance of the motor If Resistance value is abnormal replace motor Red Pink Pink Violet Violet Blue Red Black White Red Lead wire 89 7 8 150 8 197 8 37 4 8 37 4 8 Resistance value AC Thermal protector Pr VIOLET Low BLUE S Lo PINK Med RED...

Страница 163: ... 8 63 1 8 63 1 8 Resistance value AC Thermal protector Pr VIOLET Med BLUE Low RED Hi BLACK WHITE 150 C at 20 C Check Point AB A24LATH Floor Ceiling Type Check each winding resistance of the motor If Resistance value is abnormal replace motor Red Violet Violet Blue Red Black White Red Lead wire 110 8 181 8 64 9 8 64 9 8 Resistance value AC Thermal protector Pr VIOLET Med BLUE Low RED Hi BLACK WHITE...

Страница 164: ...rmal protector Pr VIOLET Med BLUE Low RED Hi BLACK WHITE 145 C at 20 C Check Point ARXC72LATH High Static Pressure Duct Type Check each winding resistance of the motor If Resistance value is abnormal replace motor AC Thermal protector Pr VIOLET Low BLUE S Lo PINK Med RED Hi BLACK WHITE 145 C Red Pink Pink Violet Violet Blue Red Black White Red Lead wire 5 25 7 5 02 7 0 94 7 1 86 7 0 94 7 Resistanc...

Страница 165: ...pe Check each winding resistance of the motor If Resistance value is abnormal replace motor AC BLUE Low YELLOW RED Hi BLACK WHITE Thermal protector 140 C Blue Red Blue Black White Red Lead wire 134 8 25 5 8 306 8 Resistance value at 20 C Pr 04 103 ...

Страница 166: ...ssure Sensor Characteristics of pressure sensor 4 5 5 0 0 5 0 Output V Pressure MPa DC Check Point Check Voltage from Main PCB DC With the connector connected to the PCB measure the voltage between CN119 2 3 of the Main PCB 2 Suction Pressure Sensor Characteristics of pressure sensor 3 5 1 7 0 5 0 Output V Pressure MPa DC 04 104 1 1 3 3 WHITE PRESSURE SENSOR HIGH BLACK 2 2 RED PS 1 1 3 3 WHITE PRE...

Страница 167: ...ICE PARTS INFORMATION 15 Pressure switch Type of contact Characteristics of pressure switch C H Pressure Pressure switch For Inverter comp 4 2 0 1MPa 3 2 0 15MPa Contact Short Open Contact Open Short 04 105 ...

Страница 168: ... 25 30 40 50 60 70 80 90 100 110 120 168 6 129 8 100 9 79 1 62 6 49 8 40 0 26 3 17 8 12 3 8 7 6 3 4 6 3 4 2 6 2 0 27 8 21 0 16 1 12 4 9 6 7 6 6 0 4 8 3 8 2 5 1 7 1 2 105 4 58 2 44 0 33 6 25 9 20 2 15 8 12 5 10 0 8 0 5 3 3 6 Applicable Thermistors Discharge temp TH TH1 Comp temp TH TH10 Outdoor temp TH TH3 Heat exchanger TH TH5 Suction temp TH TH4 Sub cool heat exchanger inlet TH TH8 Sub cool heat ...

Страница 169: ...e mode and measure the resistance between the following terminals Judge the result of as follows All 3 points several M or greater Normal 1 or more points several k to short Defective IN IN L1 L2 P N Check Point 3 L2 P Set the tester to the Diode mode and measure the voltage value between the following terminals Several 0 3V to 0 7V Normal Under 0 1V or over load Defective Judge the result of as f...

Страница 170: ......

Страница 171: ...5 APPENDING DATA UNIT ...

Страница 172: ......

Страница 173: ...re Regulation Valve TH1 Discharge temp TH3 Outdoor temp TH4 Suction temp TH5 Heat Exchanger Liquid Pipe temp TH7 Sub cool Heat Exchanger Outlet Liquid temp TH8 Sub cool Heat Exchanger Inlet Gas temp TH9 Sub cool Heat Exchanger Outlet Gas temp TH10 Compressor shell temp SV2 Pressure Equalization Valve EEV1 Electric Expansion Valve 1 Total refrigerant amount control EEV2 Electric Expansion Valve 2 L...

Страница 174: ...MODELS AUXB07 AUXB09 AUXB12 AUXB14 AUXB18 AUXB24 05 02 5 2 WIRING DIAGRAM 5 2 1 Indoor Unit ...

Страница 175: ...MODELS AUXD18 AUXD24 AUXA30 AUXA36 AUXA45 AUXA54 05 03 ...

Страница 176: ...MODELS ARXB07 ARXB09 ARXB12 ARXB14 ARXB18 05 04 ...

Страница 177: ...MODEL ARXB24 MODELS ARXB30 ARXB36 05 05 ...

Страница 178: ...MODEL ARXB45 05 06 ...

Страница 179: ...MODEL ARXA24 MODELS ARXA30 ARXA36 ARXA45 05 07 ...

Страница 180: ...MODELS ARXC36 ARXC45 ARXC60 MODELS ARXC72 ARXC90 05 08 ...

Страница 181: ...MODELS ARXD07 ARXD09 ARXD12 ARXD14 ARXD18 ARXD24 05 09 ...

Страница 182: ...MODELS AB A12 AB A14 AB A18 AB A24 05 10 ...

Страница 183: ...MODELS AB A12LBTH AB A14LBTH 05 11 AB A18LBTH AB A24LBTH ...

Страница 184: ...05 12 MODELS AB A30 AB A36 AB A45 AB A54 ...

Страница 185: ...05 13 MODELS AB A30LBTH AB A36LBTH AB A45LBTH AB A54LBTH ...

Страница 186: ...MODELS AS A07 AS A09 AS A12 AS A14 05 14 ...

Страница 187: ...MODELS AS E07 AS E09 AS E12 AS E14 05 15 ...

Страница 188: ...MODELS AS A18 AS A24 AS A30 05 16 ...

Страница 189: ...05 17 MODELS AS A18LACH AS A24LACH AS A30LACH ...

Страница 190: ...05 18 MODELS AJ A36 45 54LALH 5 2 2 Outdoor Unit ...

Страница 191: ...0 50 0 70 0 80 0 90 1 00 1 20 1 40 1 60 1 80 2 00 Pressure MPa Output V 0 50 0 58 0 66 0 74 0 82 0 90 1 06 1 14 1 22 1 30 1 46 1 62 1 78 1 94 2 10 2 20 2 40 2 60 2 80 3 00 3 20 3 40 3 60 3 80 4 00 4 20 4 40 4 60 4 80 5 00 2 26 2 42 2 58 2 74 2 90 3 06 3 22 3 38 3 54 3 70 3 86 4 02 4 18 4 34 4 50 Pressure MPa Output V 0 00 0 10 0 20 0 30 0 40 0 50 0 70 0 80 0 90 1 00 1 10 1 20 1 30 1 40 1 50 1 60 1...

Страница 192: ...H10 Outdoor temp TH3 Heat exchanger TH5 Suction temp TH4 Sub cool heat exchanger Gas inlet TH8 Sub cool heat exchanger Gas outlet TH9 Sub cool heat exchanger Liquid temp TH7 6 5 35 8 0 30 10 0 12 5 15 8 20 1 25 2 33 6 Resistance Value 25 20 15 10 5 0 Temperature C 3 5 4 3 5 3 Resistance Value 50 45 40 Temperature C Indoor Temperature Thermistor TH21 Resistance Value Temperature C 32 4 35 40 0 30 4...

Страница 193: ...1 1 513 1 557 1 601 1 647 1 693 1 740 1 788 1 837 1 887 1 938 1 990 2 043 2 097 2 152 2 208 2 265 2 323 2 382 2 442 2 503 2 565 2 629 2 693 2 759 2 826 2 894 2 963 3 034 3 106 3 178 3 253 3 328 3 405 3 483 3 562 3 643 3 725 3 808 3 893 3 979 4 066 4 155 Saturation pressure Mpa Temp C Saturated liquid Saturated gas 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 1...

Страница 194: ...0 0 0 5 1 0 1 5 2 0 2 5 3 0 3 5 4 0 4 5 30 20 10 0 10 20 30 40 50 60 Saturated liquid pressure MPa Gauge pressure Saturated liquid temperature C 05 22 5 3 4 Temperature and pressure of refrigerant Graph ...

Страница 195: ...6 DISASSEMBLY PROCESS ...

Страница 196: ......

Страница 197: ... the CONTROL COVER by sliding toward Remove the SERVICE PANEL by sliding downward 06 01 6 DISASSEMBLY PROCESS Before servicing the unit turn the power supply switch OFF Then do not touch electric parts for 10 minutes due to the risk of electric shock WARNING Hooks 3 places Screws serrated Hooks Screws CONTROL COVER MAIN PCB ...

Страница 198: ...d spacers Remove the connector Remove the COMMUNICATION PCB 06 02 Spacers Terminal Earth screw COMMUNICATION PCB Connector 5 COMMUNICATION PCB removal CN102 CN150 Caution Be careful about position of Fan motor connector when you exchange Main PCB or Fan motor by the repair For Upper Fan motor CN102 For Lower Fan motor CN150 ...

Страница 199: ...R PCB FILTER PCB and ACTPM removal Open the CONTROL BOX MAIN Remove the spacers 8 places Remove the connectors and screws Screws AC IN Earth screw Spacers 6 1 FILTER PCB removal Note the tightening torque at the installation Tightening torque is 2 5 0 2N m except for the earth screw ...

Страница 200: ...ssible from IPM and Diode Bridges when you exchange INVERTER PCB by the repair 2 Spread the heat transfer compound evenly on IPM and Diode Bridges 3 Prevent foreign matter from attaching to the surface of IPM and Diode Bridges Note at the installation 1 Remove the old heat transfer compound as possible from ACTPM when you exchange ACTPM by the repair 2 Spread the heat transfer compound evenly on A...

Страница 201: ...ch Solenoid Coil 4 way valve Solenoid Coil Solenoid Valve Pressure Sensor High Pressure Wear gloves to prevent the frostbite because a small amount of refrigerant leaks during work CAUTION Remove the PRESSURE SENSOR with wrench Note the tightening torque at the installation Tightening torque is 15 1 5N m 06 05 ...

Страница 202: ...the THERMISTOR SPRING Remove the THERMISTOR Careful not to disconnect the thermistor wire with a strong pull 7 2 SOLENOID COIL Solenoid valve removal 7 3 SOLENOID COIL 4way valve removal Remove the mounting screw Remove the SOLENOID COIL Remove the mounting screw with wrench or short screwdriver Remove the SOLENOID COIL ...

Страница 203: ... GUARD by sliding upward Note at the installation Insert propeller Fan and Moter shaft reference D cutting position And the tightening torque at the installation Tightening torque is from 10 to 12N m Note at the installation Motor wire is underside of Fan motor Cut the binder 2 places Remove the 4 mounting screws Screws Screws Hooks Binders Remove the FAN MOTOR ...

Страница 204: ...g screws Remove the PIPE COVER FRONT screw serrated screw with washer Hooks 12 CHOKE COIL removal Remove the mounting screws Remove the mounting screw Remove the BRACKET CONTROL BOX Remove the connectors Remove the mounting screws Remove the CHOKE COIL Remove the mounting screws Remove the DUCT A Remove the TOP PANEL Caution Protect the choke coil wiring and pipes from the edge of DUCT A ...

Страница 205: ...T PANEL removal 06 09 Remove the mounting screws Remove the RIGHT PANEL by sliding upward 14 PIPE COVER REAR removal Remove the mounting screws Remove the PIPE COVER REAR Screws with washer Hook Screws Screws ...

Страница 206: ...T 3 Fully open the 3WAY VALVE Gas and 3WAY VALVE Liquid 4 Open the EEVs of Outdoor units and Indoor units by vaccuming mode 5 Collect the refrigerant from the 3WAY VALVE Start the following work after completely collecting the refrigerant Do not reuse the refrigerant that has been collected Screws Hook Remove the 8 mounting screws Remove the VALVE PLATE Remove the COMPRESSOR COVER A and TOP Screws...

Страница 207: ...ANK CASE Discharge side Cut the binder and remove the heat insulation Remove the Thermistor Discharge Remove the Thermistor Comp temp and Thermistor Discharge Remove the Terminal Cover and Compressor wire Loose the HEATER CRANK CASE Remove the COMP BOLTs 3 places Heat up the brazed part of the discharge side and disconnect Heat up the brazed part of the suction side and disconnect Remove the COMPR...

Страница 208: ... refrigerant pipes during work 6 When brazing be sure to replace the air in the pipe with nitrogen gas to prevent forming oxidization scale 7 Open the 3WAY VALVE because there is a possibility of squirting the refrigerant from the heated pipes at brazing Part name Allowable temperature Precautions in work Remove the coil before brazing And install the coil after brazing Remove the coil before braz...

Страница 209: ...eneral Limited All rights reserved TM is a worldwide trademark of FUJITSU GENERAL LIMITED Product specifications are subject to change without notice 1116 Suenaga Takatsu ku Kawasaki 213 8502 Japan Printed in Japan 2011 08 30 ...

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