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Fujitsu AIRSTAGE V-II, Service Manual

Introducing the Fujitsu AIRSTAGE V-II - an innovative and reliable HVAC solution. This powerful system ensures optimal comfort with energy efficiency. Access the comprehensive warranty statement and user manual for free download from our website, manualshive.com. Quickly navigate and unleash the full potential of your AIRSTAGE V-II with ease.

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Trouble shooting  6

INDOOR UNIT Error Method:
Heat Exchanger Outlet Sensor Error

Indicate or Display:

Indoor Unit     :  Operation LED 4 times Flash, Timer LED 2 Times Flash, 

                           Filter LED Continuous Flash.

Outdoor Unit  :  E.5 U.1

Error Code      :  4 2

Detective Actuators:

Indoor Unit Controller PCB Circuit

Heat Exchanger Outlet Thermistor

Detective details:

When open or shorted Heat Exchanger outlet Thermistor is detected at Power

ON.

Forecast of  Cause : 

1. Connector defective connection  2.Thermistor defective 3.Controller PCB defective

Check Point 1 : Check connection of Connector

Check if connector is loose or removed

Check erroneous connection

Check if thermistor cable is open

>>Reset Power when reinstalling due to removed connector or incorrect wiring.

OK

Thermistor Characteristics (Rough value)

If Thermistor is either open or shorted, replace it and reset the power.

Check Point 2 : Remove connector and 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

04-15

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 does not appear, replace Controller PCB and set up the original address.

(Refer to 06-03 page Main PCB removal.)

H/E Inlet Thermistor

(CN20 Wire:Black)

H/E Outlet Thermistor

(CN20 Wire:Gray)

Room Temp. Thermistor

(CN19 Wire:Black)

Room Temp. Thermistor

(CN10 Wire:Black)

H/E Intlet Thermistor

(CN12 Wire:Black)

H/E Outlet Thermistor

(CN11 Wire:Gray)

DC

Cassette Schematic Diagram (Connector connection) 

Wall mount Schematic Diagram (Connector connection) 

H/E Outlet Thermistor

(CN9 Wire:Gray)

H/E Inlet Thermistor

(CN9 Wire:Black)

Room Temp. Thermistor

(CN8 Wire:Black)

H/E Outlet Thermistor

(CN17 Wire:Gray)

H/E Inlet Thermistor

(CN17 Wire:Black)

Room Temp. Thermistor

(CN16 Wire:Black)

 

Duct Schematic Diagram (Connector connection)

Summary of Contents for AIRSTAGE V-II

Page 1: ...Large Capacity Multi VRF System DC Inverter Control Compressor Long Piping System Design High Efficiency Refrigerant R410A SERVICE MANUAL FUJITSU GENERAL LIMITED ...

Page 2: ......

Page 3: ...MPRESSOR OPERATION 02 01 02 02 02 02 02 03 2 2 4 Compressor Sequence Operation 2 2 3 Speed Range of Start Stop and Operation 2 2 2 Capacity Control 02 02 2 2 1 Operation Stop Condition 02 05 2 5 SPECIAL OPERATION 02 10 02 10 02 11 2 5 2 Pre Heat Operation 2 5 1 Oil Recovery Operation 2 6 PROTECTIVE FUNCTION 02 13 02 13 2 6 1 Protective Function List 2 5 3 Defrost Operation Control 02 11 2 3 FAN CO...

Page 4: ...r 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 10 4 3 3 Trouble Shooting for Optional Parts 4 3 2 Trouble Shooting With Error Code OUTDOOR UNIT 4 3 1 Trouble Shooting With Error Code INDOOR ...

Page 5: ...3 1 Pressure sensor 05 01 05 05 05 05 5 2 2 Outdoor Unit 05 17 5 3 CHARACTERISTICS OF SENSORS 05 20 05 20 5 3 2 Thermistor resistance 05 21 5 3 3 Saturation temperature and saturation pressure tables R410A 05 22 5 3 4 Temperature and pressure of refrigerant Graph 05 23 6 DISASSEMBLY PROCESS ...

Page 6: ...1 TEST RUN ...

Page 7: ......

Page 8: ... cooling and compressor trouble Refrigerant leakage will cause low performance and abnormal stopping Prevention of water leakage Prevention of water leakage Refrigerant leakage will cause low performance and abnormal stopping Refrigerant leakage will cause low performance and abnormal stopping Mixing in of vacuum pump oil by reverse flow will cause equipment trouble Prevents degradation of the oil...

Page 9: ...g Gas leak test Use an R410A dedicated leak tester to check for gas leaks 1 2 3 Confirm the additional refrigerant amount with the installation manual etc Always take the R410A refrigerant from the cylinder liquid phase and charge it using the gas phase Do not lay a cylinder with siphon pipe on its side Use an R410A dedicated gauge manifold and charging hose Charge refrigerant using the liquid pip...

Page 10: ...quid pipe shall be full open There shall 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 h...

Page 11: ...l operate corresponding to the operation capacity of the indoor units Service tool used output CSV Excel Outdoor unit master push button SW operation On service tool High pressure Low pressure Discharge pipe temperature outdoor unit Suction pipe temperature outdoor unit Subcool defference between inlet and outlet of SCHEX Inlet air temperature indoor unit Heat exchange inlet temperature indoor uni...

Page 12: ...or abnormal vibration There shall be no water leakage There shall be no condensation on the drain cabinet piping and discharge port Shall operate according to the settings ON OFF set temperature change 01 05 Judgment standard Check Check contents Procedure These are representative figures of AJYA90LALH at the standard condition Indoor 27 C Outdoor 35 C If conditions are different from those above ...

Page 13: ...s the MODE EXIT button SW107 once Pursuance completion Monitoring condition Mode select condition Return to mode select condition 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 2 Press SELECT button Monitor...

Page 14: ...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...

Page 15: ... 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...

Page 16: ...ration is reset by stopping operation of the objective devices by pressing Off of Operation and then pressing OK on the setting screen 01 09 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...

Page 17: ...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...

Page 18: ...rmation on Thermistor 2 CONST speed compressor discharge temperature The value of the Thermistor 2 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...

Page 19: ...ode 2 C 02 High power mode 1 2 C 03 High power mode 2 4 C 13 Defrost setting shift 00 End temperature Normal 01 End temperature Higher 01 Emergency stop 21 Operation mode selecting method 00 Priority given to the first command 01 Priority given to the external input of outdoor unit 02 Priority given to the master indoor unit 22 Snow falling protection fan mode 00 Normal operation 01 Snow falling p...

Page 20: ...meter pulse setting 2 Set the hundreds digit and thousands digit of the electricity meter pulse setting connected to CN135 4 00 99 Setting number 00xx 99xx 00 Setting mode Change of function 4 F2 ITEM CODE No Classification 01 12 1 Push switch on outdoor unit PCB 3 When electricity meter No is set to 000 and 201 to 299 the pulses input to CN135 become ineffective Available setting number is 001 to...

Page 21: ...g Function Install and maintenance 2 Automatic address setting operates for indoor unit of same refrigerant circuit F3 01 13 Compressor 2 Error Compressor 2 Overcurrent Error Compressor Motor Loss of Synchronization Compressor 1 or 2 Temperature Abnormal Inverter Compressor Start Up Error Discharge Temperature 1 or 2 Abnormal Low Pressure Abnormal Current Sensor 1 Error Trip Detection Outdoor Unit...

Page 22: ...2 OUTDOOR UNIT OPERATION CONTROL ...

Page 23: ......

Page 24: ... ACM oil return valve1 AC220 240V 50Hz 6W Solenoid valve 5 EEV1 bypass valve AC220 240V 50Hz 8W Solenoid valve 6 INV comp oil release valve AC220 240V 50Hz 6W Crank case heater 1 For Inverter Compressor AC240V 25W Crank case heater 2 For Constant speed Compressor AC240V 35W Base heater Field supply AC220 240V 35W LON WORKS Inverter communication External input 1 CN131 Low noise mode operation Exte...

Page 25: ...r 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 combining the operation of DC inverter rotary compressor and the constant speed scroll compressor the amount of required refrigerant circulation acceding to cooling and heating load can be supplied from compressor effi...

Page 26: ...e length and capacity shift switch settings Cooling Heating 02 03 2 2 3 Speed Range of Start Stop And Operation For DC Inverter Rotary Compressor On stop mode 0 rps On operating mode 30 100 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 Target speed 60sec 60sec 60r...

Page 27: ...te elapsed from start of process and high pressure of all outdoor units 2 50MPa Compression ratio of any outdoor unit 8 30 minutes elapsed from start of process or high pressure of all outdoor units 2 63MPa or discharge SH of all operating compressors 12 a 1 25 Low pressure value 2 125 High Pressure 3 80MPa 3 30MPa Maximum 3 00MPa Maximum speed 80rps Maximum speed 90rps Maximum speed 95rps Maximum...

Page 28: ...ssor Stop Run command Make a sequence such that the INV compressors are always started before constant speed compressors Operate so that the speed of the operating INV compressors is the same May also vary with the upper limit lower limit speed restriction Rotate the stating sequence under the following conditions 1 Defrosting 2 Oil recovery 3 When cooling discharge temperature is high Make a star...

Page 29: ... AJ A90LALH AJ A108LALH AJ A126LALH AJ A144LALH Fan speed rpm 02 06 Conditions which lower the fan speed High pressure saturation low limit of target high pressure saturation range and heat sink temperature 75 C Conditions which raise the fan speed High pressure saturation upper limit of target high pressure saturation or heat sink temperature 80 C Fan step 16 10 7 0 Outside air temperature sensor...

Page 30: ...step 16 Condition which lowers the fan speed High pressure 3 30MPa and heat sink temperature 75 C Condition which raises the fan speed High pressure saturation 3 20MPa or heat sink temperature 80 C The initial speed of the first boot outdoor unit is detected by outdoor air temperature sensor value TAOUT intermittent 6 intermittent 5 intermittent 4 intermittent 3 intermittent 2 intermittent 1 6 5 4...

Page 31: ...ched LOW NOISE MODE LOW NOISE MODE Automatic switching Automatic switching Low capacity Compressor capacity is low or High pressure is high high pressure saturation 58 C at cooling or Low pressure is low low pressure saturation 0 C at heating Low capacity Compressor capacity is low or High pressure is high high pressure saturation 58 C at cooling or Low pressure is low low pressure saturation 0 C ...

Page 32: ...Int Max fan step Time Fan step 30 5 10 20 Interval time Int min PUSH SW setting 00 01 02 03 F2 23 Interval setting setting standard setting setting setting This mode ends when the outdoor temperature becomes 7 or more or operation starts EEV 1 EEV 2 EEV is controlled so that the system reaches closer to the target discharge temperature that is calculated from high and low pressure Cooling mode Hea...

Page 33: ...minutes have elapsed since the start Operation COMPRESSOR Performed by all INV compressors and the constant speed compressors operating up until now INV speed varies depending on the operation state EEV Opening Indoor Outdoor unit Controlled pulse as normal operation mode FAN speed Indoor Outdoor unit Controlled fan speed as normal operation mode Start condition End condition After 4 minutes have ...

Page 34: ... 6 However 27 6 C to 6 C Defrosting end condition At all outdoor units heat exchange liquid temperature end judgment temperature 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...

Page 35: ...st end Defrost end Compressor operate by the lowest speed 30rps Outdoor units which satisfied the defrosting end judgment temperature are stopped for constant speed compressor and are operated at the lowest speed 30rps for inverter compressor 02 12 Defrost end Stopped compressor Slave 1 Slave 2 Master INV CONST INV CONST INV CONST Defrost end Defrost end STEP 3 When the defrosting of all outdoor u...

Page 36: ...scharge temperature fixed value INV 110 C constant speed 115 C Pattern reset condition 3 minutes have elapsed and discharge temperature 80 C Corresponding compressor stopped Pattern starting condition Pattern generated 2 times within 40 minutes Pattern reset condition Error reset push button SW executed after power turned on again Corresponding compressor stopped permanent stop Error display Start...

Page 37: ...ter Starting conditions 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 cond...

Page 38: ...ssor stopped Error display Pattern starting condition Current value 18 2A Pattern reset condition Current value 18 2A Frequency Maximum Setting Protection INV compressor Pattern starting condition Current value 19 2A Pattern reset condition Current value 19 2A Constant speed compressor stopped permanent stop Error display Current Detector Circuit Inverter compressor is stopped when the over currer...

Page 39: ...3 INDOOR UNIT OPERATION ...

Page 40: ......

Page 41: ...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 ...

Page 42: ...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 ...

Page 43: ...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 ...

Page 44: ...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...

Page 45: ... 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...

Page 46: ... 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...

Page 47: ...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...

Page 48: ... 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...

Page 49: ... 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 ...

Page 50: ... 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...

Page 51: ...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...

Page 52: ...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 ...

Page 53: ... 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...

Page 54: ... 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...

Page 55: ...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...

Page 56: ... 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 ...

Page 57: ...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...

Page 58: ...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...

Page 59: ...4 TROUBLE SHOOTING ...

Page 60: ......

Page 61: ...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...

Page 62: ...dication Inverter Compressor and Constant Speed Compressor Operation Indication Blinking 0 5 sec ON OFF ON OFF ON OFF 1 sec 1 sec 0 24 sec 0 5 sec 0 24 sec Peak Cut Mode Starting condition Discharge temp fixed value INV 110 C constant speed 115 C Release condition 3 minutes have elapsed and discharge temperature 80 C Starting condition Compressor temp fixed value INV 112 C Constant speed 120 C Rel...

Page 63: ... times flash 2 3 times flash 1 times flash Continuous flash 2 times flash 3 times flash 11 Continuous flash 1 times flash 3 times flash Continuous flash 4 times flash 1 times flash 12 Continuous flash 2 times flash 1 times flash 9 10 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 Flashi...

Page 64: ...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...

Page 65: ...sor Error Suction Gas Temp Sensor Error Outdoor Temp Sensor Error Outdoor Unit Heat Ex Liquid Temp Sensor Error Compressor Temp Sensor 2 Error Discharge Temp Sensor 1 Error 42 41 40 39 38 37 36 35 34 33 32 31 30 29 27 26 1 3 1 1 4 1 1 4 2 2 8 1 5 U 1 6 1 5 6 2 8 6 2 3 6 2 6 6 3 1 6 7 2 6 8 1 6 8 2 6 9 1 2 8 4 7 1 1 7 2 1 7 2 2 7 3 3 7 4 1 7 5 1 7 7 1 8 2 1 8 2 2 8 3 1 8 3 2 8 4 1 8 6 1 8 6 3 8 6 4...

Page 66: ...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...

Page 67: ...ssor Start Up Error Compressor 2 Error A 1 A 2 A 3 A 4 A 5 A C Low Pressure Abnormal High Pressure Abnormal Compressor Temperature Abnormal Discharge Temperature 2 Abnormal Discharge Temperature 1 Abnormal Heat Sink 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 Outdoor Unit Heat Ex Temperature S...

Page 68: ...ensor error Outdoor Temp sensor error Sub cool heat Ex gas inlet Temp sensor error Sub cool heat Ex gas outlet Temp sensor error Compressor Temp sensor 1 error Inverter compressor stop Compressor Temp sensor 2 error Constant speed compressor stop Heat sink Temp sensor error Inverter compressor stop Current sensor error Inverter compressor stop High pressure switch 1 error Inverter compressor stop ...

Page 69: ...ed 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 Not recoverable Need to repair secondary accident is possible Subject refrigerant circuit s...

Page 70: ...lay The newest History Number and Error Code are displayed by the 2 digits Light off Flashing Lighting The History Number changes sequentially from 00 to 09 by the SELECT button End of the Error History mode Mode Selection Display Monitor Mode Select the Error History Number Display details of the Error History ERROR HISTORY MODE 3 2 4 1 4 3 2 1 Error History Number 00 Error Code 71 4 2 8 ERROR HI...

Page 71: ...eak 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 Refer to 06 03 page Main PCB removal Check Point 1 1 Reset Power Supply Check Point 2 ...

Page 72: ...rect it by referring to Installation Manual OK Check power supply voltage AC220V 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 ...

Page 73: ...c 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 Point 3 Replace Cont...

Page 74: ... 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 does not appear r...

Page 75: ...ermistor 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 If the voltage does...

Page 76: ...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 15 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 volta...

Page 77: ... 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 Check Point 1 2 do...

Page 78: ... 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 4 Check...

Page 79: ...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...

Page 80: ...unication PCB Replace Communication PCB If the symptom does not change replace Controller PCB and set up the original address Refer to 06 03 page Main PCB removal 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 harm...

Page 81: ...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 failu...

Page 82: ...ess Refer to 06 03 page Main PCB removal 4 3 2 Trouble Shooring With Error Code OUTDOOR UNIT Master unit Master unit When the power is turned on the number of connected slave units set at the master unit and the number of slave units received by communication do not match Slave unit Slave unit When the power is turned on not even one master unit communication data can be received 1 Power supply de...

Page 83: ...onnected slave units by Dip SW and the number of slave units which can be recognized by communication did not match continued for 10 seconds or more after the start of control Slave unit State in which communication from the master unit was not received continued for 10 seconds or more after the start of control 1 Noise momentary open voltage drop 2 Power supply defective 3 The number setting mist...

Page 84: ... 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 outdoor network communication error...

Page 85: ...recast 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 Refer to 06 03 page Main PCB remov...

Page 86: ... supply Power cable connection open check Check Point 3 Check Filter PCB Main and Main PCB 1 Noise momentary open voltage drop 2 Power supply defective 3 Filter PCB Main defective 4 Main PCB defective Outdoor unit Main PCB Check Filter PCB Main and Main PCB Refer to Sarvise Parts Information 4 If replace Main PCB Refer to 06 03 page Main PCB removal Indoor Unit Operation LED 9 times Flash Timer LE...

Page 87: ...ted 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 Refer to 06 03 page Main PCB removal 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 ...

Page 88: ...ive 4 Inverter PCB 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 ...

Page 89: ...utton SW F3 function 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 settin...

Page 90: ...INV to Inverter PCB Connector and wiring connection state check Cable open check Check resistance of cement resistor Check Point 1 1 Turn the power on again Error displayed again Check Point 3 Check Cement resistor Indoor Unit Operation LED 9 times Flash Timer LED 15 Times Flash Filter LED Continuous Flash Outdoor Unit E 63 1 Error Code 63 04 29 Trouble shooting 21 Indicate or Display Detective Ac...

Page 91: ...CB INV to Inverter PCB Connector and wiring connection state check Check Point 4 Check Main PCB Chack Main PCB Refer to Sarvise Parts Information 4 If replace Main PCB Refer to 06 03 page Main PCB removal Check Point 5 Replace Inverter PCB Replace Inverter PCB 1 Noise momentary power failure voltage drop 2 Magnetic Relay for Inverter coil side wiring disconnection open 3 Power supply to Filter PCB...

Page 92: ...p the original address Refer to 06 03 page Main PCB removal 1 Magnetic Relay for constant speed compressor defective 2 Current sensor 2 current sensor for constant speed compressor defective 3 Main PCB defective Current value constant speed 3 0A continues for 5 seconds during constant speed compressor stop command When the magnetic Relay for constant speed compressor was turned ON manually a Magne...

Page 93: ... PCB INV to inverter PCB wiring Connector and wiring connection state check Chec Point 3 1 Magnetic relay activation circuit Chack the DC Voltage 12V of CN808 on INVERTER PCB Check Point 4 Main PCB output 230 V for Magnetic relay Check the AC230V of CN130 on Main PCB Indoor Unit Operation LED 9 times Flash Timer LED 15 Times Flash Filter LED Continuous Flash Outdoor Unit E 68 2 Error Code 68 04 32...

Page 94: ...er line Check Point 5 Replace Main PCB Change Main PCB and set up the original address Refer to 06 03 page Main PCB removal Check Point 2 1 Turn the power on again Error displayed again Check Point 3 Check the communication PCB connection Communication PCB connection check Check Point 4 Check the communication PCB Communication PCB check Indoor Unit Operation LED 9 times Flash Timer LED 15 Times F...

Page 95: ...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 orig...

Page 96: ...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 3 4 voltage value 5V Remove the thermistor from Main PCB check the voltage Discharge temperature sensor 2 CN141 3 4 Indoor Unit Operation ...

Page 97: ...n 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 Operati...

Page 98: ...or 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 CN145 1 3 voltage value 5V Remove the thermistor from Main PCB check the voltage Compressor temperature sensor 2 CN145 1 3 Indoor Unit Operation LED 9 times Flash Timer LED 15 Times ...

Page 99: ...r 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 the voltage does not a...

Page 100: ...e thermistor characteristics refer to the Service Parts Information 22 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 voltage does not appe...

Page 101: ...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 Error Code 75 If t...

Page 102: ...om the PCB and check For the thermistor characteristics refer to the Service Parts Information 22 Check Point 3 Check voltage of Inverter PCB DC5 0V Inverter PCB CN800 1 2 voltage value 5V Remove the thermistor from Inverter PCB check the voltage Heat sink temperature thermistor CN800 1 2 Indoor Unit Operation LED 9 times Flash Timer LED 15 Times Flash Filter LED Continuous Flash Outdoor Unit E 77...

Page 103: ...r 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 times Flash Timer LED 15 Times Flash Filter LED Continuous Flash Ou...

Page 104: ...rmistor 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 times Flash Timer LED 15 Times Flash Filter LED Continuous F...

Page 105: ...rts Information 22 Check Point 3 Check voltage of Main PCB DC5 0V Main PCB CN142 1 2 voltage value 5V Remove the thermistor from Main PCB check the voltage Liquid pipe temperature sensor 1 CN142 1 2 Indoor Unit Operation LED 9 times Flash Timer LED 15 Times Flash Filter LED Continuous Flash Outdoor Unit E 83 1 Error Code 83 If the voltage does not appear replace Main PCB and set up orignal address...

Page 106: ...istics 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 Indoor Unit Operation LED 9 times Flash Timer LED 15 Times Flash Filter LED Conti...

Page 107: ...PCB INV to Inverter PCB CT system wiring connection state Connector and wiring connection state check Cable open check Connector connection state check Cable open check Chack Filter PCB INV and Inverter PCB Refer to Sarvise Parts Information 5 Check Point 3 Check Filter PCB INV and Inverter PCB Indoor Unit Operation LED 9 times Flash Timer LED 15 Times Flash Filter LED Continuous Flash Outdoor Uni...

Page 108: ...in 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 Information 20 Main PCB CN118 1 3 voltage value 5V Remove the thermistor from Main PCB check the vol...

Page 109: ...etected 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 characteristics check For the characteristics of the suction pressure sensor refer to the Service Parts Inf...

Page 110: ... the high pressure switch 1 connection state Connector and wiring connection state check Cable open check Check Point 2 Check the high pressure switch 1 characteristics Switch characteristics check For the characteristics of high pressure switch 1 refer to the Service Parts Information 21 Check Point 3 Replace Main PCB Change Main PCB and set up the original address Refer to 06 03 page Main PCB re...

Page 111: ... the high pressure switch 2 connection state Connector and wiring connection state check Cable open check Check Point 2 Check the high pressure switch 2 characteristics Switch characteristics check For the characteristics of high pressure switch 2 refer to the Service Parts Information 21 Check Point 3 Replace Main PCB Change Main PCB and set up the original address Refer to 06 03 page Main PCB re...

Page 112: ...erminal to magnetic Relay for constant speed compressor to constant speed compressor wiring connection state OK Check Point 3 Check Magnetic Relay for constant speed compressor Magnetic relay for constant speed compressor operation check Refer to Sarvise Parts Information 13 OK Check Point 4 Check the wiring connection state current sensor 2 current sensor for constant speed compressor to Main PCB...

Page 113: ...iring connection state check Cable open check Check Point 2 Check the current sensor 2 current sensor for constant speed compressor Current sensor 2 current sensor for constant speed compressor check For the characteristics of current sensor 2 current sensor for constant speed compressor refer to the Service Parts Information 7 Check Point 3 Replace the compressor 2 Compressor 2 replacement Indoor...

Page 114: ...ot started if all the compressors in the same refrigerant system are not temporarily stopped Wiring connection state check Cable open check Check Point 3 Replace the Inverter compressor Inverter compressor replacement Check Point 2 Check the Inverter PCB Inverter PCB check Refer to Service Parts Information 5 Check Point 1 Check the Inverter PCB to inverter compressor connection state Indoor Unit ...

Page 115: ...t fan motor check Ambient temperature not raised by the effect of other heat sources Discharged air not sucked in Check Point 3 Replace the Inverter compressor Inverter compressor replacement Check Point 2 Check the Inverter PCB Inverter PCB check Refer to Service Parts Information 5 Check Point 1 Check the outdoor unit fan operation heat exchanger ambient temperature Indoor Unit Operation LED 9 t...

Page 116: ...oint 2 Replace the Inverter compressor Inverter compressor replacement Check Point 1 Check the Inverter PCB Inverter PCB check Refer to Service Parts Information 5 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 55 Trouble shooting 47 Indicate or Display Detective Actuators Detective details OUTDOOR UNIT Error Method...

Page 117: ...ace Main PCB Drive circuit output check Check if speed can be detected If replace Main PCB and and set up orignal address Refer to 06 03 page Main PCB removal 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 check Check for the absence of foreign matter around the...

Page 118: ...in PCB Electrolytic capacitor check DC voltage detection circuit check If replace Main PCB and and set up orignal address Refer to 06 03 page Main PCB removal 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...

Page 119: ... Motor operation check Check Point 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 Ti...

Page 120: ...stem Check Point 1 Check the slave unit Slave unit 7 seg display check Check by troubleshooting based on displayed error code Indoor Unit No display Outdoor Unit E 9U 2 Error Code 9U 04 59 Trouble shooting 51 Indicate or Display Detective Actuators Detective details OUTDOOR UNIT Error Method ...

Page 121: ... 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 and after EEV ACM oil return Refer to Service Parts Information 15 16 Check Point 2 Check the EEV strainer If the 3 w...

Page 122: ... 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 and after EEV ACM oil return Refer to Service Parts Information 15 16 Check Point 2 Check the EEV strainer If the 3 w...

Page 123: ...it E A3 1 Error Code A3 04 62 Cooling operation OK Heating operation Check Point 1 Check if 3 way valve gas side is open EEV EEV2 indoor unit EEV open Strainer clogging check before and after EEV ACM oil return Refer to Service Parts Information 14 16 Check Point 2 Check the EEV strainer EEV EEV1 EEV2 open Strainer clogging check before and after EEV ACM oil return Refer to Service Parts Informati...

Page 124: ...eck Leak check Indoor Unit Operation LED 9 times Flash Timer LED 15 Times Flash Filter LED Continuous Flash Outdoor Unit E A3 2 Error Code A3 04 63 Protection stop by compressor 2 tempreture 120 during compressor 2 operation generated 2 times within 40 minutes OK Cooling operation OK Check Point 2 Check the EEV strainer Check Point 1 Check if 3 way valve gas side is open Heating operation Check Po...

Page 125: ...an operation heat exchanger ambient temperature Discharge pressure sensor characteristics check For the characteristics of the discharge pressure sensor refer to Service Parts Information 20 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 SV1 SV2 Check Point 3 Check the check valve ...

Page 126: ...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 21 Check Point 6 Check high pressure switch 1 Check Point 7 Check the refrigerant amount Refrigerant charged amount check Check Point 5 Check the solenoid valve SV1 SV2 Check Point 3 2 Check the check valve Solenoid v...

Page 127: ...Check the outdoor unit fan operation heat exchanger ambient temperature High pressure switch 2 characteristics check For the characteristics of the high pressure switch 2 refer to the Service Parts Information 21 Check Point 6 High pressure switch 2 check Check Point 7 Refrigerant amount check Refrigerant charged amount check Check Point 5 Solenoid valve SV1 SV2 check Check Point 3 2 Check valve c...

Page 128: ...ed Refer to Service Parts Information 15 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 Information 20 Check Point 6 Check the suction pressure sensor Ch...

Page 129: ...ated 3 times within 60 minutes Heat sink thermistor characteristics check Check by disconnecting thermistor from PCB For the characteristics of the thermistor refer to Service Parts Information 22 Check Point 3 Check the heat sink thermistor Heat sink foreign matter soiling check Heat exchange foreign matter check Ambient temperature not raised by effect of other heat sources Discharged air not su...

Page 130: ...s Detective details UTDOOR 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 i...

Page 131: ...tive 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 line connection Che...

Page 132: ...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 AC220V appears at Indoor Unit Terminal 1 2 Power Supply AC For AS model advance to OK without ...

Page 133: ...fective 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 Main OK Replace the fuse Recheck if the power supply terminals section is shorted Note Always check in the power off state N...

Page 134: ...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...

Page 135: ...n Or direct 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 Service Parts Information 15 16 Check Solenoid Valve Service Parts Information 17 Check Compressor Service Parts Inf...

Page 136: ...ration noise by loose bolt or contact noise of piping is happening Is Compressor locked Check Compressor Service Parts Information 2 3 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 ...

Page 137: ... 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...

Page 138: ...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 ...

Page 139: ...ed System 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 t...

Page 140: ...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 PCB...

Page 141: ...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 ...

Page 142: ... noise source Remove the surrounding noise source YES OK NO Trouble shooting 80 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 ...

Page 143: ...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...

Page 144: ...stered at Replace Group Remote Controller is 3 refrigerant sircuits or more even though connected to one converter Make 2 refrigerant sircuits 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 more Cause...

Page 145: ...ing noise source Remove the surrounding noise source YES OK NO Trouble shooting 85 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...

Page 146: ... 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...

Page 147: ...k 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 pressing SW104 of Network Convert...

Page 148: ...k 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 pressing SW104 of Network Convert...

Page 149: ...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...

Page 150: ...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 91 Cause 1 Remote Controller is defective Replace Group Remote Controller 04 88 ...

Page 151: ...he key to enter the function selection process Trouble shooting 92 Trouble shooting 93 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...

Page 152: ...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...

Page 153: ...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...

Page 154: ... 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 Refer to 06 03 page Main PCB removal Remove the surrounding noise Condition of occurrence When signal from indoor unit does not enter t enter Release condition When signal from indoor unit ent...

Page 155: ...upply 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 controller and 1 external...

Page 156: ...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...

Page 157: ...ATION Backup operation is the operating method of replacing compressor while the system is running Compressor can be replaced without stopping the system Details In backup operation cooling and heating capacity is decreased by the capacity of the separated outdoor unit The work procedure is as follows Change the setting of the DIP SW 3 1 3 2 Outdoor unit address setting of the slave unit 1 from OF...

Page 158: ...t 2 as Slave unit 1 6 Turn on the units except the broken slave unit and wait for more than 30 seconds Do not turn on the broken slave unit 7 It is ready for Backup operation Start operation as usual Change the DIP SW 3 3 3 4 Number of slave units connected of the master unit from ON OFF two units to OFF ON one unit Change the DIP SW 3 1 3 2 Outdoor unit address setting of the slave unit 2 from ON...

Page 159: ... indoor unit s EEV is fully open condition It displays corresponding indoor unit s EEV on the chart at the bottom of the monitor If there is no sign of closing the EEV from fully opened condition It often creates Low pressure protection stop at start up or after oil recovery operation When LPS 0 1MPa at start up the compressor stops 2 On Heating operation EEV1 of outdoor unit is open at 500 pulse ...

Page 160: ...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...

Page 161: ...the protector is operated to stop operation of Compressor Protector operates within the range in the following graph and it is released when the temperature becomes lower than approx 80 C Internal Protector Protector operation range Check Point 3 Check Cause of Protector Operation Due to unstable power supply Compressor is causing an abnormally high temperature Check Power Voltage once again Due t...

Page 162: ...cover opened W T U R V S INVERTER PWB RED WHITE BLACK compressor TM806 TM807 TM808 Attention 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 AC380V 415V voltage among L1 L2 and L3 If it does not appear check the power supply terminal 2 Check Voltage from Main PCB to Inverter PCB DC15 0 18 0V between terminals of CN1...

Page 163: ...L1 N L3 N and L1 L3 6 Disconnect the connection wires between the CT PCB Main PCB 7 Is there a short between pins 1 3 of the CT PCB connector Check pressure sensors high pressure low pressure Refer to 6 6 6 Pressure sensor check Check Main PCB 2 YES 8 Disconnect the wires of the pressure sensors high pressure low pressure connected to the connector of the Main PCB 9 Is there a short between pins 1...

Page 164: ...B Main PCB 8 Is there a short between Inverter PCB side connector pins 1 2 Inverter PCB side short Replace Inverter PCB Filter PCB INV side short Replace Filter PCB INV YES Check Inverter PCB 3 9 Disconnect the connection wires 3 pin connector between the Inverter PCB Filter PCB INV 10 Is there a short between Inverter PCB side connector pins 1 3 and Filter PCB INV side connector pins 1 3 Turn on ...

Page 165: ... measure the resistance between the following terminals Red wire P screw terminals U V W White wire N screw 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...

Page 166: ...eck Point 1 1 3 AC current AC 0 AC current A DC voltage V 2 45 10 DC TM301 CN302 TM302 CT PCB Measure the AC current flowing from TM302 and the DC voltage between connector pins 1 3 at that time AC current DC voltage characteristic 04 104 ...

Page 167: ... side red Tester side black Tester side red Tester side black Pin 1 Pin 2 Pin 3 Pin 5 Pin 4 Pin 2 Pin 1 Pin 3 Set the tester to the Resistance mode and check for open short between the following terminals All 6 points open Normal 1 or more points shorted Defective No fissures breaks damage etc at body and terminal section Is the rear of the body coated with silicone grease Are there no abnormaliti...

Page 168: ...eck 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 04 106 ...

Page 169: ...urge prevention resistor connected to magnetic contactor Set the tester to the Resistance mode and measure the resistance value between the terminals No polarity Judge the result of as follows 31 35 to 34 65 Normal Other than the above Deteriorated defective 2 Balance resistor connected to electrolytic capacitor SERVICE PARTS INFORMATION 11 Capacitor Check Point 1 Appearance check Check Point 2 El...

Page 170: ...ric check Between R to U Between S to V Between T to W Set the tester to the Resistance mode and check for open short between the following terminals No polarity Open Normal Short Abnormal contacts fused No fissures breaks damage etc at the body and terminals section Are there no abnormalities at threaded parts Stripped threads deformation damage etc R U V W S T Check Point 1 Appearance check Chec...

Page 171: ...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...

Page 172: ...trainer 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 Hi TEMP Normal TEMP CLOSE Example Hot GUS Pipe In Pipe Out Hi TEMP Hi TEMP OPEN Example Hot GUS 04 110 ...

Page 173: ...w 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 Hi TEMP Normal TEMP CLOSE Example Hot GAS Pipe In Pipe Out Hi TEMP Hi TEMP OPEN E...

Page 174: ...n 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 Hi TEMP Normal TEMP CLOSE Example Hot GA...

Page 175: ... Pipe In TEMP Hi Pipe Out TEMP Normal Protection Function Pipe In TEMP Pipe Out TEMP Hi TEMP Normal TEMP Hi TEMP Hi 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 removing the ...

Page 176: ...ot proper replace 4 way valve HOT GAS HOT GAS HOT GAS HOT GAS Check Point 4 Check Voltage of Solenoid Coil If CN6 of Control PCB dose not Show 220V 20 V during Heating operation Compressor is in operation replace Control 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 18 4 WAY VALVE Remove CN6 fr...

Page 177: ... 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...

Page 178: ...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...

Page 179: ...ce 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 Pink...

Page 180: ...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...

Page 181: ... 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...

Page 182: ...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...

Page 183: ...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 04 121 ...

Page 184: ...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 04 122 1 1 3 3 WHITE PRESSURE SENSOR HIGH BLACK 2 2 RED PS 1 1 3 3 WHITE PRE...

Page 185: ...itch 1 2 Type of contact Characteristics of pressure switch C H Pressure Pressure switch 1 For Inverter comp Pressure switch 2 For Constant speed comp 4 2 0 1MPa 3 2 0 15MPa 4 2 0 1MPa 3 2 0 15MPa Contact Short Open Contact Open Short 04 123 ...

Page 186: ...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 27 4 20 7 15 8 12 2 9 5 7 5 5 9 4 7 3 8 2 5 1 7 1 2 0 8 0 6 0 4 0 3 Applicable Thermistors Discharge temp TH1 Discharge temp TH2 Comp 1 temp TH Comp 2 temp TH Outdoor temp TH Heat sink temp TH Heat exchanger TH Suction temp...

Page 187: ...5 APPENDING DATA UNIT ...

Page 188: ......

Page 189: ...AS LINE TH21 TH22 TH23 TH23 TH21 TH22 Check valve Capillary Strainer 3 way valve Service port Pressure regulation valve ACM CMP1 INV OS HEX SCHEX HPS FAN1 LPS SV1 EEV1 EEV2 TH1 TH3 TH4 TH5 TH6 TH7 TH8 TH9 TH10 SV3 SV2 HPSW1 CMP ACM 5 1 REFRIGERANT CIRCUIT 05 01 MODELS AJ A72LALH AJ A90LALH ...

Page 190: ...AS LINE TH21 TH22 TH23 TH23 TH21 TH22 Check valve Capillary Strainer 3 way valve Service port Pressure regulation valve C M P1 IN V OS HEX SC H EX H PS FA N1 LPS OS SV 1 C M P2 EEV 1 EEV 2 TH1 TH2 TH11 TH3 TH4 TH5 TH6 TH7 TH8 TH9 SV 2 SV 3 H PSW1 H PSW2 CMP A CM SV 6 MODEL AJ 108LALH 05 02 ...

Page 191: ...H21 TH22 TH23 TH23 TH21 TH22 Check valve Capillary Strainer 3 way valve Service port Pressure regulation valve TH10 C M P1 IN V OS HEX SC H EX H PS FA N1 LPS OS SV 1 C M P2 EEV 1 EEV 2 TH1 TH2 TH11 TH3 TH4 TH5 TH6 TH7 TH8 TH9 SV 2 H PSW1 H PSW2 CMP A CM SV 3 SV 5 05 03 MODELS AJ 126LALH AJ 144LALH ...

Page 192: ...d valve 4 SV 5 Solenoid valve 5 SV 6 Solenoid valve 6 TH 1 Discharge temperature thermistor 1 TH 2 Discharge temperature thermistor 2 TH 3 Outdoor temperature thermistor TH 4 Suction temperature thermistor TH 5 Heat exchanger outlet thermistor TH 6 Liquid temperature thermistor 1 TH 7 Liquid temperature thermistor 2 TH 8 Sub cool heat exchanger inlet thermistor TH 9 Sub cool heat exchanger outlet ...

Page 193: ...MODELS AUXB07 AUXB09 AUXB12 AUXB14 AUXB18 AUXB24 05 05 5 2 WIRING DIAGRAM 5 2 1 Indoor Unit ...

Page 194: ...MODELS AUXD18 AUXD24 AUXA30 AUXA36 AUXA45 AUXA54 05 06 ...

Page 195: ...MODELS ARXB07 ARXB09 ARXB12 ARXB14 ARXB18 05 07 ...

Page 196: ...MODEL ARXB24 MODELS ARXB30 ARXB36 05 08 ...

Page 197: ...MODEL ARXB45 05 09 ...

Page 198: ...MODEL ARXA24 MODELS ARXA30 ARXA36 ARXA45 05 10 ...

Page 199: ...MODELS ARXC36 ARXC45 ARXC60 MODELS ARXC72 ARXC90 05 11 ...

Page 200: ...MODELS ARXD07 ARXD09 ARXD12 ARXD14 ARXD18 ARXD24 05 11 1 ...

Page 201: ...MODELS AB A12 AB A14 AB A18 AB A24 05 12 ...

Page 202: ...MODELS AB A12LBTH AB A14LBTH 05 12 1 AB A18LBTH AB A24LBTH ...

Page 203: ...05 13 MODELS AB A30 AB A36 AB A45 AB A54 ...

Page 204: ...05 13 1 MODELS AB A30LBTH AB A36LBTH AB A45LBTH AB A54LBTH ...

Page 205: ...MODELS AS A07 AS A09 AS A12 AS A14 05 14 ...

Page 206: ...MODELS AS E07 AS E09 AS E12 AS E14 05 15 ...

Page 207: ...MODELS AS A18 AS A24 AS A30 05 16 ...

Page 208: ...05 16 1 MODELS AS A18LACH AS A24LACH AS A30LACH ...

Page 209: ...2 To be connected to indoor units Z1 Z2 To be connected to other master outdoor unit H1 H2 To be connected to outdoor unit within same refrigerant system 05 17 MODELS AJ A72LALH AJ A90LALH 5 2 2 Outdoor Unit R S T N ...

Page 210: ... 1 Note 1 X1 X2 To be connected to indoor units Z1 Z2 To be connected to other master outdoor unit H1 H2 To be connected to outdoor unit within same refrigerant system 05 18 MODEL AJ 108LALH R S T N ...

Page 211: ...ote 1 X1 X2 To be connected to indoor units Z1 Z2 To be connected to other master outdoor unit H1 H2 To be connected to outdoor unit within same refrigerant system MODELS AJ 126LALH AJ 144LALH 05 19 R S T N ...

Page 212: ... 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 70 0 50 0 68 0 85 1 03 1 ...

Page 213: ...TH1 Discharge temp TH2 Comp 1 temp TH10 Comp 2 temp TH11 Outdoor temp TH3 Heat sink temp TH CN800 Heat exchanger TH5 Suction temp TH4 Sub cool heat exchanger inlet TH8 Sub cool heat exchanger outlet TH9 Liquid temp 1 TH6 Liquid temp 2 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...

Page 214: ...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...

Page 215: ...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 23 5 3 4 Temperature and pressure of refrigerant Graph ...

Page 216: ...6 DISASSEMBLY PROCESS ...

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Page 224: ...rew Remove the SOLENOID COIL Remove the PRESSURE SENSOR with wrench There are two sensors High and Low pressure Remove the heat insulation 06 07 13 PRESSURE SENSORS removal 12 EEV COILS removal Remove the EEV coil by hand There are two coils Note the tightening torque at the installation Tightening torque is 15 1 5N m ...

Page 225: ......

Page 226: ......

Page 227: ...Heat insulation Cut the Discharge pipe in this range Cut the Suction pipe in this range Remove the COMPRESSOR Range Range Remove the TERMINAL COVER Remove the CRANK CASE HEATER Remove the 3 mounting screws of TERMINAL U RED W BLACK V WHITE Caution Keep their shape better There is a possibility of catching fire to oil when removing by the welding without cutting it ...

Page 228: ... Caution Keep their shape better There is a possibility of catching fire to oil when removing by the welding without cutting it Caution Oil flows out when piping is cut when a lot of oil remains So receive oil with the rag etc Procedure for compressor installation Reverse procedure to removing the compressor Precautions for installation of Compressor 1 When brazing do not apply the flame to the te...

Page 229: ...flame with the fire retardant board when the flame seems to hit the following parts directly 5 Do not allow moisture or debris to get inside refrigerant pipes during work 6 When brazing be sure to replace the air in the pipe with nitrogen gas to prevent forming oxidization scale Part name Allowable temperature Precautions in work Applicable Outdoor unit HP Remove the coil before brazing And instal...

Page 230: ...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 2009 06 09 ...

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