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МУЛЬТИЗОНАЛЬНЫЕ СИСТЕМЫ

Service Manual V_II

Service Manual V_III

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МУЛЬТИ-СПЛИТ КОНДИЦИОНЕРЫ

OM simple UTY-RNRY русская версия

OM UTY-CGGY русская версия

OM UTY-DCGY русская версия

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OM UTY-LNHY1 русская версия

OM UTY-RHKY русская версия

OM UTY-RNKY русская версия

• 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 3: Table Of Contents

  CONTENTS 1. TEST RUN 1-1 EXECUTION PROCEDURE AND EXECUTION PRECAUTIONS……01-01 1-2 TEST RUN METHOD………………..01-03 1-2-1 Check Items Before Power ON…………….01-03 1-2-2 Check Items After Power ON…………….01-04 1-2-3 Test Run From Outdoor PC Board…………… 01-06 1-2-4 Test Run From Remote Controller…………… 01-07 1-3 TEST RUN CONTROL………………..

• Page 4: Table Of Contents

  CONTENTS 3. INDOOR UNIT OPERATION 3-1 FAN CONTROL………………….03-01 03-01 3-1-1 Fan Speed Setting………………..03-01 3-1-2 «AUTO» Position………………..3-2 MASTER CONTROL………………..03-02 03-02 3-2-1 Operation Mode Control………………3-2-2 Auto Changeover………………..03-04 3-2-3 «COOL» Position………………..03-05 3-2-4 «HEAT» Position………………..03-05 3-3 LOUVER CONTROL………………..03-06 3-4 ELECTRONIC EXPANSION VALVE CONTROL…………

• Page 5: Table Of Contents

  CONTENTS 5. APPENDING DATA 5-1 REFRIGERANT CIRCUIT………………05-01 5-2 WIRING DIAGRAM………………..05-05 5-2-1 Indoor Unit………………….05-05 5-2-2 Outdoor Unit………………….05-17 5-3 CHARACTERISTICS OF SENSORS……………. 05-20 05-20 5-3-1 Pressure sensor………………..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)……….

• Page 6
  1. TEST RUN…

• Page 8: Execution Procedure And Execution Precautions

  1. TEST RUN 1-1 EXECUTION PROCEDURE AND EXECUTION PRECAUTIONS Before execution Execution zone decision Execution procedure and precautions Reason Check the characteristics of the refrigerant used and grasp the Use of a refrigerant other than the Confirmation of refrigerant used special features of the refrigerant.

• Page 9: Refrigerant Circuit

  Execution If taken from the air phase, since the Confirm the additional refrigerant amount with the installation Addition refrigerant charging manual, etc. composition of the refrigerant which is Always take the R410A refrigerant from the cylinder liquid phase charged will change, low performance and charge it using the gas phase.

• Page 10: Test Run Method

  1-2 TEST RUN METHOD 1-2-1 Check Items Before Power ON Procedure Check contents Judgment standard Check Circuit breaker capacity Outdoor unit: 50A (AJ*144/126/108), 30A (AJ*90/72) Indoor unit: Type of power source Circuit breaker: 30A=4mm , 50A=10mm , 60A=16mm , 80A=22mm wiring 100A=38mm Outdoor unit:…

• Page 11: Check Items After Power On

  1-2-2 Check Items After Power ON [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. Procedure Check contents Judgment standard Check Outdoor unit circuit breaker ON Check lighting of PC board LED101 and 7-segment display.

• Page 12
  Procedure Check contents Judgment standard Check <Indoor unit service tool + actual measurement> Fan operation Shall be switched to all fan speeds in the cooling mode. Louver operation (except duct) Louver shall be switched to all positions. Shall also swing. Indoor unit Outlet air temperature Inlet air temperature and outlet air temperature difference shall be 10°C or…

• Page 13: Test Run From Outdoor Pc Board

  1-2-3 Test Run From Outdoor PC Board All the indoor units connected to the outdoor unit can be test-operated by push button setting. (Only for master unit) SWITCH POSITION POWER ERROR MODE 7 Segment LED101 LED102 LED Lamp (GREEN) (RED) LED105 LED104 MODE…

• Page 14: Test Run From Remote Controller

  1-2-4 Test Run From Remote Controller UTY — RNK 1. Standard wired remote controller Stop the indoor unit. Push the button and button simultaneously for more than two seconds. The air conditioner will start to conduct a test run and » «…

• Page 15
  4. Touch panel controller UTY — DTG Test run operating procedure <Monitor screen (icon)> Monitor Mode Status: On 10/11.2008.Mar. 02:20 PM Setting Lange Group Down List Office A Office B PC Room Schedule Cool Heat Cool 21.5 C 21.0 C 26.0 C Restrant Entrance…
• Page 16
  <Setting screen> Operation Setting Status: On 10/11.2008.Mar. 02:20 PM Control Unit : Meeting Room R/C Prohibition operation Mode Set Temp. Fan Auto Auto 24.0 C On/Off High ( * ) Cool Mode Air Flow Direction Economy Temp. Anti Freeze Filter Sign Test Operation Heat Quiet…

• Page 17: Test Run Control

  1-3 TEST RUN CONTROL 1. When the test run signal is transmitted from standard wired, wireless remote controller, simple remote controller, transmitted netwwork, and outdoor unit. (1) The test run operation starts and the electric expansion valve is controlled to a maximum flow, regardless of the temperature condition.

• Page 18: Field Setting And Monitor Mode List

  1-4 Field Setting And Monitor Mode List ITEM Classification Setting Mode Information contents CODE No. Push switch on Device and Connected number of indoor unit The number of the communicating unit is displayed outdoor unit PCB system Software version of outdoor unit Monitor mode Software version : [ F1 ]…

• Page 19
  ITEM ITEM Setting Function Default Classification Setting Mode CODE No. CODE No. Indoor unit field setting Indoor unit address 00~63 00~63 Address Refrigerant circuit address 00~99 00~99 setting by Filter Filter indicator Interval Default remote controller Longer Shorter Filter sign display Enable Disable Display only on central remote control…
• Page 20
  ITEM ITEM Setting Function Default Classification Setting Mode CODE No. CODE No. Change of Electricity meter No. setting 1 00~99 Setting number x00~x99 Push switch on function 4 (Set the ones digit and tens digit of the No ( Refer to Design & Technical Manual for details.) outdoor unit PCB of the electricity meter connected to CN135.) Setting mode…
• Page 21
  ITEM Setting Mode Setting Function CODE No. Push switch on Forced operation Cooling test run Forced thermostat-ON in Cooling. outdoor unit PCB Heating test run Forced thermostat-ON in Heating. Function mode [ F3 ] Test run stop Test run is stopped. Install and Signal amplifier automatic address Automatic address setting operates for signal amplifier.
• Page 22
  2. OUTDOOR UNIT OPERATION CONTROL…

• Page 24: Input / Output List

  2. OUTDOOR UNIT 2-1 INPUT / OUTPUT LIST Input / output or kind of detail Control range Discharge pressure sensor Pressure sensor Measure range 0.0 to 5.0MPa Suction pressure sensor Pressure sensor Measure range 0.0 to 1.7MPa Discharge temperature sensor 1 Themistor Measure range 10 to 130 Discharge temperature sensor 2…

• Page 25: Compressor Operation

  2-2 COMPRESSOR OPERATION 2-2-1 Operation / Stop Condition When cooling requirement capacity or heating requirement capacity from either of the indoor units in the same refrigerant circuit is input, the compressor operates. When all the indoor units in no «cooling requirement capacity» or «heating requirement capacity», the compressor is stopped.

• Page 26: Speed Range Of Start,Stop,And Operation

  (2) Target low-pressure and high-pressure control <Cooling> In order to make the evaporation pressure of the indoor unit at the proper pressure on a variety of operations, capacity of the compressor will be controlled by low-pressure sensor of the outdoor unit (Master unit). <Heating>…

• Page 27
  (2) Heating starting process At the start of heating, the compressor is started by the following process. All compressors start-up to change the 4 way valve. Capacity control returns to normal control after the end of the starting process. (target high-pressure control) <…

• Page 28: Compressor Sequence Operation

  2-2-4 Compressor Sequence Operation Make a starting sequence and start and stop the compressors in accordance with that sequence. Starting sequence n : Compressors are started at nth and stopped nth from the end Example) Starting sequence : Compressor started first, compressor stopped last Starting sequence : Compressor started 2nd, compressor stopped 2nd from the end Make a sequence such that the INV compressors are always started before constant…

• Page 29: Fan Control

  2-3 FAN CONTROL 2-3-1 Cooling Operation Fan speed (rpm) Fan step AJ A72LALH AJ A90LALH AJ A108LALH AJ A126LALH AJ A144LALH intermittent 6 intermittent 6 intermittent 6 intermittent 6 intermittent 6 intermittent 5 intermittent 5 intermittent 5 intermittent 5 intermittent 5 intermittent 4 intermittent 4 intermittent 4…

• Page 30: Heating Operation

  Intermittent fan mode Fan speed 0 rpm Fan speed 300 rpm Fan step Fan mode duration time T ( sec ) duration time ( sec ) intermittent 6 intermittent 5 intermittent 4 intermittent 3 intermittent 2 intermittent 1 Normal fan step Intermitten fan step 7 sec 7 sec…

• Page 31: Low Noise Mode

  2-3-3 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. « » Settings and corresponding operations Capacity priority setting Low noise level setting Operation mode ( PUSH SW ) ( PUSH SW )

• Page 32: Snow Falling Protection Fan Mode

  2-3-4 Snow Falling Protection Fan Mode The fan rotates compulsorily at the maximum speed when the outdoor temperature becomes 5 or less when snow falling protection fan mode is set on. The fan is rotated for 1 minute at the fan step upper limit at the interval set by PUSH SW. This mode ends when the outdoor temperature becomes 7 or more or operation starts.

• Page 33: Special Operation

  2-5 SPECIAL OPERATION 2-5-1 Oil Recovery Operation (1) Purpose of the operation The amount of refrigerant lubricant oil which has been transported to the indoor units and the connection pipe with the refrigerant will become large as the operation time of compressor increases. It is necessary to recover the oil back into the outdoor unit for a certain time interval in order to prevent compressors from damaging due to lack of lubrication oil.

• Page 34: Pre-Heat Operation

  2-5-2 Pre-heat Operation This pre-heat operation protects the start up failure by preventing the refrigerant from soaking into the oil in compressor. Crankcase heater ON: 30 minutes elapsed since installed compressors stopped (However, ON when power turned on) OFF: Installed compressors operation *It doesn’t control according to the temperature.

• Page 35
  < Operating state of each part during defrosting operation > Indoor unit EEV : Open FAN : Stop Outdoor unit FAN : Stop Compressor : In operation [ STEP 1 ] All compressors operates and it defrosting. Master Slave 1 Slave 2 Compressor in operation…

• Page 36: Protective Function

  2-6 PROTECTIVE FUNCTION 2-6-1 Protective Function List Protective Function Operating Condition Operation Detect Parts COOL HEAT DISPLAY Discharge Temp Discharge Temp <Starting conditions> EEV of operating indoor unit gradually opened 3 minutes have elapsed since the start of operation and Protection 1 Thermistor (discharge temperature…

• Page 37
  Protective Function Operation Detect Parts Operating Condition DISPLAY COOL HEAT High Pressure High Pressure <Pattern starting condition> All compressors in outdoor unit stopped High-pressure 4.00MPa Protection Stop 1 Sensor <Pattern reset condition> 5 minutes have elapsed and high-pressure 3.50MPa EA41 <Pattern starting condition>…
• Page 38
  Protective Function Operating Condition Operation Detect Parts COOL HEAT DISPLAY E941 Inverter compressor is stopped when the over currernt protectioncircuit in the INV compressor stopped Overcurrent Break Overcurrent inverter PCBoad detects an abnormal current duringthe operation. Stop Protection Circuit (permanent stop) If it repeated 5 times, the inverter compressor becomes permanentstop.
• Page 39
  3. INDOOR UNIT OPERATION…
• Page 41
  3. INDOOR UNIT OPERATION 3-1 FAN CONTROL 3-1-1 Fan Speed Setting Fan speed setting Press the FAN CONTROL button to set the fan speed. AUTO HIGH 3-1-2 «AUTO» Position Fan speed zone 1. COOLING OPERATION The fan speed is determined automatically in accordance Hi zone with the condition «(T (corrected room temperature) — T…

• Page 42: Master Control

  3-2 MASTER CONTROL 3-2-1 Operation Mode Control Each operation mode is controlled as below. (1) Stop mode Indoor fan motor : OFF Electric expansion valve : Stop pulse Drain pump : Turns ON-OFF by the drain pump control function (2) Cool, Dry and Heat Mode Cool Heat Indoor fan motor…

• Page 43
  Method 3. (Management by indoor unit) Operation mode management is made «Management by indoor unit» by outdoor unit PUSH-SW (field setting). Then the master indoor unit is set by wired remote controller. Thereupon the priority mode shifts to Cooling Priority or Heating Priority in accordance with input from the master indoor unit regardless of the current priority mode.

• Page 44: Auto Changeover

  3-2-2 Auto Changeover [Method] 1. Switch operation mode management to «Management by indoor unit» 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.

• Page 45
  3-2-3 «COOL» Position When using the cooling mode, set the temperature to a value lower than the current room temperature, otherwise the indoor unit will not start the cooling operation and only the fan will rotate. An example for COOLING TEMPERATURE CONTROL time chart (Manual setting) Ts + 0.5 C •…

• Page 46: Louver Control

  3-3 LOUVER CONTROL (1) ADJUSTING THE DIRECTION OF AIR CIRCULATION Instructions relating to heating ( ) are applicable only to heat pump type outdoor unit. Begin air conditioner operation before performing this procedure. Vertical Air Direction Adjustment This instructions are applicable to «LARGE CEILING TYPE», «UNIVERSAL FLOOR/CEILING TYPE», «CASSETTE TYPE», «WALL MOUNTED TYPE»…

• Page 47
  Horizontal Air Direction Adjustment This instructions are applicable to «LARGE CEILING TYPE», «UNIVERSAL FLOOR/CEILING TYPE» and «WALL MOUNTED TYPE». Press the HORIZONTAL AIR FLOW DIRECTION SET button. Press the HORIZONTAL AIRFLOW DIRECTION button. The temperature display will change to the horizontal airflow direction setting display. Press the HORIZONTAL AIRFLOW DIRECTION button to change the horizontal louvre position.
• Page 48
  Instructions are applicable to «LARGE CEILING TYPE», «UNIVERSAL FLOOR / CEILING TYPE», «CASSETTE TYPE», «WALL MOUNTED TYPE», and «COMPACT WALL MOUNTED TYPE». About Vertical Airflow SWING Operation Air swing range The SWING operation may stop temporarily when the Air flow direction set Range of swing air conditioner’s fan is not operating, or when operating at very low speeds.

• Page 49: Electronic Expansion Valve Control

  3-4 ELECTRONIC EXPANSION VALVE CONTROL 1. Initialization When the power is turned ON. When it has passed the limited time since the last initialization. 2. Operation Control When indoor unit stopping Outdoor unit Condition EEV Condition Fully closed Cooling Fully closed Heating Slightly open When starting up…

• Page 50: Function

  3-6 FUNCTION 3-6-1 Auto Restart The air conditioner restarts with the previous setting operation. 3-6-2 Icing Protection Control 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 «…

• Page 51: Timer Control

  3-7 TIMER CONTROL 3-7-1 Wireless Remote Controller UTY — LNH There are following 4 kinds of timer modes are available. ON Timer OFF Timer PROGRAM Timer SLEEP Timer 1. ON / OFF TIMER The timer functions cannot be used when this controller is used together with the remote controller (Wired type). A beeping sound is made when a signal is received.

• Page 52
  Sleep timer The sleep timer function automatically corrects the temperature thermostat setting according to the time setting to prevent excessive cooling and heating while sieeping. Cooling operation / dry operation Heating operation When the sleep timer is set, the set temperature When the sleep timer is set, the set temperature automatically rises 1°C every hour.The set sutomatically drops 1°C every 30 minutes.

• Page 53: Group Remote Controller

  3-7-2 Group Remote Controller UTY — CGG Different schedules can be set for each day of the week. WEEKLY TIMER Four timers can be set for each day 1. WEEKLY TIMER The timer function is not available depending on the initial setting. Different schedules can be set for each day of the week.

• Page 54
  Operating setting Press the Start/Stop button or the Mode button or the Set Temperature button to set the operation. * For the operations that can be set, refer to «Operation mode setting», «Room tem- perature setting», and «To start /stop operation» , in «OPERATION». * Only the current operation settings are displayed.

• Page 55: Wired Remote Controller

  3-7-3 Wired Remote Controller UTY — RNK ON / OFF TIMER WEEKLY TIMER TEMPERATURE SET BACK TIMER 1. ON / OFF TIMER The timer function is not available depending on the model. To set the ON/OFF timer SU MO TU WE TH FR SA Press the timer mode button to se- lect the ON timer or OFF timer.

• Page 56: Weekly Timer

  2. WEEKLY TIMER The timer function is not available depending on the model. Weekly timer setting SU MO TU WE TH FR SA 3 6 9 12 15 18 21 Press the SET button for 2 sec- Press the timer mode button to select the weekly timer. onds or more.

• Page 57
  To start /cancel the WEEKLY timer operation To start To cancel The independent timer will flash on the display. Press the TIMER DELETE button to 3 6 9 12 15 18 21 cancel the timer mode. ex.Operating time 7:00-18:00 The timer mode can also be canceled Indpnd.

• Page 58: Temperature Set Back Timer

  3. TEMPERATURE SET BACK TIMER The timer function is not available depending on the model. Temperature SET BACK timer setting SET BACK SU MO TU WE TH FR SA If there is no existing SET BACK tempera- ture setting, » — — » will be displayed for the 3 6 9 12 15 18 21 temperature.

• Page 59
  4. TROUBLE SHOOTING…

• Page 61: Normal Operation

  4. TROUBLESHOOTING 4-1 NORMAL OPERATION 4-1-1 Indoor Unit Display Indication type Indication Lamp Flashing Pattern Operation Continuous lighting Operation LED Anti Freeze Continuous lighting(lowered light) Timer Timer LED Continuous lighting(lowered light) Filter Filter LED Continuous lighting 1 sec 1 sec Operation LED Power Failure 1 sec…

• Page 62: Outdoor Unit Display

  4-1-2 OUTDOOR UNIT DISPLAY Indication type 7 Segment LED Pattern Description Idling(stop) Blank Cooling Mode «C» OO «L» Heating Mode «H» EA «T» Refer to 02-10 page for operation. Oil Recovery Operation «O» IL «R» ECOVERY Defrost Operation Refer to 02-11 page for operation. «D»…

• Page 63: Abnormal Operation

  4-2 ABNORMAL OPERATION 4-2-1 Indoor Unit Display Please refer the flashing pattern as follows. Trouble Error Contents Operation LED Timer LED Filter LED shooting Remote Controller 9,10 1 times flash 2 times flash Continuous flash Communication Error Network Communication Error 1 times flash 4 times flash Continuous flash…

• Page 64
  4-2-2 Outdoor Unit Display LED display POWER LED101 POWER ERROR POWER MODE LED : on MODE 0.1sec 0.1sec ERROR LED : blink LED101 LED102 ERROR (GREEN) (RED) LED102 Operation button MODE SELECT ENTER EXIT SW107 SW108 SW109 ERROR transition Short press : less than 3 seconds Long press : more than 3 seconds Annunciation «Err.»…

• Page 65: Error Code List For Outdoor Unit

  4-2-3 Error Code List for Outdoor Unit Error Trouble Error Trouble Error Contents Error Contents Code shooting Code shooting — — — — Initial Setting Error 8 6 . 3 Suction Pressure Sensor Error 1 3 . 1 Communication Error Between Outdoor Unit 8 6 .

• Page 66: Remote Controller Display

  4-2-4 Remote Controller Display << SIMPLE REMOTE CONTROLLER >> ERROR CODE DISPLAY Error code If an error occurs, the following display will be shown. “ “ will appear in the set room temperature display.) “ “ is displayed, immediately contact authorized service personnel.

• Page 67: Error Code List For Simple And Wired Remote Controller

  4-2-5 Error Code List for Simple and Wired Remote Controller Error Trouble Error Trouble Error Contents Error Contents Code shooting Code shooting Remote Controller 9, 10, 97 Room Temperature Sensor Error Communication Error Network Communication Error Indoor Unit Heat Ex. Sensor Error 5, 6 Scan Error Inddor Unit Fan Motor Error…

• Page 68: Trouble Level Of System

  4-2-7 TROUBLE LEVEL OF SYSTEM << System Condition when Outdoor Unit Error is occurred >> Trouble Level Outdoor unit System Condition Condition Indicated on Indoor Unit. Not indicated on Indoor Unit. Not indicated on Peripheral Unit. Indicated on Peripheral. Indicated on Service Tool. Indicated on Service Tool.

• Page 69
  Trouble Level Outdoor unit System Condition Condition Indicated on Indoor Unit. Not indicated on Indoor Unit. Not indicated on Peripheral Unit. Indicated on Peripheral. Indicated on Service Tool. Indicated on Service Tool. >Abnormal Subject refrigerant (Not available) (Not available) >LED indication circuit stops >Outdoor unit stops >Recoverable…

• Page 70: Error History Mode

  4-2-8 ERROR HISTORY MODE When the abnormality occurred, the V2 system memorizes the history of error codes up to 10 and it can be displayed on 7 segments LED. It is an effective means to examine abnormality that occurred in the past. *The error history can be cleared by setting to F3-30.

• Page 71: Trouble Shooting With Error Code (Indoor Unit)

  4-3 TROUBLE SHOOTING 4-3-1 Trouble shooting with error code (INDOOR UNIT) Indicate or Display: Trouble shooting 1 Outdoor Unit : E.5 U.1 INDOOR UNIT Error Method: Indoor Unit : Operation LED 3 times Flash, Timer LED 2 Times Flash, Model Information Error Filter LED Continuous Flash.

• Page 72
  Indicate or Display: Trouble shooting 2 Outdoor Unit : E.5 U.1 INDOOR UNIT Error Method: Indoor Unit : Operation LED 3 times Flash, Timer LED 1 Times Flash, Filter LED Continuous Flash. Power Frequency Abnormal Error Code : 3 1 Detective Actuators: Detective details: Indoor Unit Controller PCB Circuit…
• Page 73
  Indicate or Display: Trouble shooting 3 Outdoor Unit : E.5 U.1 INDOOR UNIT Error Method: Indoor Unit : Operation LED 3 times Flash, Timer LED 2 Times Flash, EEPROM Access Abnormal Filter LED Continuous Flash. (Indoor Unit Main PCB Error) Error Code : 3 2 Detective details:…
• Page 74
  Indicate or Display: Trouble shooting 4 Outdoor Unit : E.5 U.1 INDOOR UNIT Error Method: Indoor Unit : Operation LED 4 times Flash, Timer LED 1 Times Flash, Room Temperature Sensor Error Filter LED Continuous Flash. Error Code : 4 1 Detective details: Detective Actuators: Indoor Unit Controller PCB Circuit…
• Page 75
  Indicate or Display: Trouble shooting 5 Outdoor Unit : E.5 U.1 INDOOR UNIT Error Method: Indoor Unit : Operation LED 4 times Flash, Timer LED 2 Times Flash, Filter LED Continuous Flash. Heat Exchanger Inlet Sensor Error Error Code : 4 2 Detective Actuators: Detective details: Indoor Unit Controller PCB Circuit…
• Page 76
  Indicate or Display: Trouble shooting 6 Outdoor Unit : E.5 U.1 INDOOR UNIT Error Method: Indoor Unit : Operation LED 4 times Flash, Timer LED 2 Times Flash, Filter LED Continuous Flash. Heat Exchanger Outlet Sensor Error Error Code : 4 2 Detective Actuators: Detective details: Indoor Unit Controller PCB Circuit…
• Page 77
  Indicate or Display: Trouble shooting 7 Outdoor Unit : E.5 U.1 INDOOR UNIT Error Method: Indoor Unit : Operation LED 5 times Flash, Timer LED 3 Times Flash, Filter LED Continuous Flash. Water Drain Abnormal Error Code : 5 3 Detective details: Detective Actuators: Indoor Unit Controller PCB Circuit…
• Page 78
  Indicate or Display: Trouble shooting 8 Outdoor Unit : E.5 U.1 INDOOR UNIT Error Method: Indoor Unit : Operation LED 5 times Flash, Timer LED 1 Times Flash, Filter LED Continuous Flash. Indoor Unit Fan Motor Error Error Code : 5 1 Detective details: Detective Actuators: When Indoor fan control is either phase control or DC control and rotation feed…

• Page 79: Trouble Shooting

  Indicate or Display: Trouble shooting 9 Outdoor Unit : E.5 U.1 INDOOR UNIT Error Method: Indoor Unit : Operation LED 1 times Flash, Timer LED 2 Times Flash, Wired Remote Controller Filter LED Continuous Flash. Communication Error Error Code : 1 2 Detective Actuators: Detective details: Indoor unit controller PCB circuit…

• Page 80
  Indicate or Display: Trouble shooting 11 Outdoor Unit : E.5 U.1 INDOOR UNIT Error Method: Indoor Unit : Operation LED 1 times Flash, Timer LED 6 Times Flash, Indoor Unit Parallel Communication Filter LED Continuous Flash. Error Error Code : 1 6 Detective Actuators: Detective details: Indoor unit Controller PCB circuit…

• Page 81: Trouble Shooting For Optional Parts

  Indicate or Display: Trouble shooting 12 Outdoor Unit : E.5 U.1 INDOOR UNIT Error Method: Indoor Unit : Operation LED 1 times Flash, Timer LED 6 Times Flash, Filter LED Continuous Flash. Network Communication Error Error Code : 1 4 Detective Actuators: Detective details: Indoor unit Controller PCB circuit…

• Page 82
  4-3-2 Trouble Shooring With Error Code (OUTDOOR UNIT) Indicate or Display: Trouble shooting 13 Outdoor Unit : — — — — OUTDOOR UNIT Error Method: Indoor Unit : No Display Initial Setting Error Error Code : No Display Detective details: Detective Actuators: Master unit: Master unit: When the power is turned on, the number of connected slave units…
• Page 83
  Indicate or Display: Trouble shooting 14 Outdoor Unit : E. 13. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Communication Error Between Filter LED Continuous Flash. Outdoor Unit Error Code : 13 Detective Actuators: Detective details:…
• Page 84
  Indicate or Display: Trouble shooting 15 OUTDOOR UNIT Error Method: Outdoor Unit : E. 14. 1 Indoor Unit : No display Outdoor Unit Network Error Code : 14 Communication 1 Error Detective details: Detective Actuators: No communication for 180 seconds or more from an indoor unit which Outdoor unit Main PCB received communication once and no outdoor network communication error 2.
• Page 85
  Indicate or Display: Trouble shooting 16 Outdoor Unit : E. 14. 2 OUTDOOR UNIT Error Method : : Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Outdoor Unit Network Filter LED Continuous Flash. Communication 2 Error Error Code : 14 Detective Actuators:…
• Page 86
  Indicate or Display: Trouble shooting 17 Outdoor Unit : E. 61. 5 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Outdoor Unit Reverse Phase, Filter LED Continuous Flash. Missing Phase Wire Error Error Code : 61 Detective Actuators:…
• Page 87
  Indicate or Display: Trouble shooting 18 Outdoor Unit : E. 62. 3 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Outdoor Unit EEPROM Access Error Filter LED Continuous Flash. Error Code : 62 Detective Actuators: Detective details:…
• Page 88
  Indicate or Display: Trouble shooting 19 Outdoor Unit : E. 62. 6 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Inverter Communication Error Filter LED Continuous Flash. Error Code : 62 Detective Actuators: Detective details: Communication not received from Inverter PCB for 10 seconds or more…
• Page 89
  Indicate or Display: Trouble shooting 20 Outdoor Unit : E. 62. 8 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Outdoor Unit EEPROM Data Error Filter LED Continuous Flash. Error Code : 62 Detective Actuators: Detective details:…
• Page 90
  Indicate or Display: Trouble shooting 21 Outdoor Unit : E. 63. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Inverter Error Filter LED Continuous Flash. Error Code : 63 Detective Actuators: Detective details: Inverter PCB Error information received from Inverter PCB…
• Page 91
  Indicate or Display: Trouble shooting 22 Outdoor Unit : E. 67. 2 OUTDOOR UNIT Error Method: Indoor Unit : No Display Inverter PCB Momentary Power Error Code : 67 Failure Detection Detective Actuators: Detective details: Inverter PCB »Momentary power failure» received from Inverter PCB Forecast of Cause : 1.
• Page 92
  Indicate or Display: Trouble shooting 23 Outdoor Unit : E. 68. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Magnetic Relay Error Filter LED Continuous Flash. Error Code : 68 Detective Actuators: Detective details: Current sensor 2 (current sensor for…
• Page 93
  Indicate or Display: Trouble shooting 24 Outdoor Unit : E. 68. 2 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Rush Current Limiting Resistor Filter LED Continuous Flash. Temp Rise Protection Error Code : 68 Detective Actuators:…
• Page 94
  Indicate or Display: Trouble shooting 25 Outdoor Unit : E. 69. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Outdoor Unit Communication PCB Filter LED Continuous Flash. Parallel Communication Error Error Code : 69 Detective Actuators:…
• Page 95
  Indicate or Display: Trouble shooting 26 Outdoor Unit : E. 71. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Discharge Temp Sensor 1 Error Filter LED Continuous Flash. Error Code : 71 Detective Actuators: Detective details:…
• Page 96
  Indicate or Display: Trouble shooting 27 Outdoor Unit : E. 71. 2 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Discharge Temp Sensor 2 Error Filter LED Continuous Flash. Error Code : 71 Detective Actuators: Detective details:…
• Page 97
  Indicate or Display: Trouble shooting 28 Outdoor Unit : E. 72. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Compressor Temp Sensor 1 Error Filter LED Continuous Flash. Error Code : 72 Detective Actuators: Detective details:…
• Page 98
  Indicate or Display: Trouble shooting 29 Outdoor Unit : E. 72. 2 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Filter LED Continuous Flash. Compressor Temp Sensor 2 Error Error Code : 72 Detective Actuators: Detective details:…
• Page 99
  Indicate or Display: Trouble shooting 30 Outdoor Unit : E. 73. 3 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Outdoor Unit Heat Ex. Liquid Temp. Filter LED Continuous Flash. Sensor Error Error Code : 73 Detective Actuators:…
• Page 100
  Indicate or Display: Trouble shooting 31 Outdoor Unit : E. 74. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Outdoor Temp Sensor Error Filter LED Continuous Flash. Error Code : 74 Detective Actuators: Detective details: Outdoor temperature thermistor short or open detected…
• Page 101
  Indicate or Display: Trouble shooting 32 Outdoor Unit : E. 75. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Filter LED Continuous Flash. Suction Gas Temp Sensor Error Error Code : 75 Detective Actuators: Detective details:…
• Page 102
  Indicate or Display: Trouble shooting 33 Outdoor Unit : E. 77. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Heat Sink Temp Sensor Error Filter LED Continuous Flash. Error Code : 77 Detective Actuators: Detective details:…
• Page 103
  Indicate or Display: Trouble shooting 34 Outdoor Unit : E. 82. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Sub-cool Heat EX. Gas Inlet Filter LED Continuous Flash. Temp Sensor Error Error Code : 82 Detective Actuators:…
• Page 104
  Indicate or Display: Trouble shooting 35 Outdoor Unit : E. 82. 2 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Sub-cool Heat EX. Gas outlet Filter LED Continuous Flash. Temp Sensor Error Error Code : 82 Detective Actuators:…
• Page 105
  Indicate or Display: Trouble shooting 36 Outdoor Unit : E. 83. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Liquid Pipe Temp. Sensor 1 Error Filter LED Continuous Flash. Error Code : 83 Detective Actuators: Detective details:…
• Page 106
  Indicate or Display: Trouble shooting 37 Outdoor Unit : E. 83. 2 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Liquid Pipe Temp Sensor 2 Error Filter LED Continuous Flash. Error Code : 83 Detective Actuators: Detective details:…
• Page 107
  Indicate or Display: Trouble shooting 38 Outdoor Unit : E. 84. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Current Sensor 1 Error Filter LED Continuous Flash. Error Code : 84 Detective Actuators: Detective details: «Protection stop by «inverter speed…
• Page 108
  Indicate or Display: Trouble shooting 39 Outdoor Unit : E. 86. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Discharge Pressure Sensor Error Filter LED Continuous Flash. Error Code : 86 Detective Actuators: Detective details: When any of the following conditions is satisfied, a discharge pressure…
• Page 109
  Indicate or Display: Trouble shooting 40 Outdoor Unit : E. 86. 3 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Suction Pressure Sensor Error Filter LED Continuous Flash. Error Code : 86 Detective details: Detective Actuators: When any of the following conditions is satisfied, a suction pressure…
• Page 110
  Indicate or Display: Trouble shooting 41 Outdoor Unit : E. 86. 4 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, High Pressure Switch 1 Error Filter LED Continuous Flash. Error Code : 86 Detective Actuators: Detective details:…
• Page 111
  Indicate or Display: Trouble shooting 42 Outdoor Unit : E. 86. 5 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, High Pressure Switch 2 Error Filter LED Continuous Flash. Error Code : 86 Detective Actuators: Detective details:…
• Page 112
  Indicate or Display: Trouble shooting 43 Outdoor Unit : E. 92. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Compressor 2 Error Filter LED Continuous Flash. Error Code : 92 Detective Actuators: Detective details: Current sensor 2 (for constant speed…
• Page 113
  Indicate or Display: Trouble shooting 44 Outdoor Unit : E. 92. 2 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Compressor 2 Current Value Error Filter LED Continuous Flash. Error Code : 92 Detective Actuators: Detective details:…
• Page 114
  Indicate or Display: Trouble shooting 45 Outdoor Unit : E. 93. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Inverter Compressor Start UP Error Filter LED Continuous Flash. Error Code : 93 Detective details: Detective Actuators:…
• Page 115
  Indicate or Display: Trouble shooting 46 Outdoor Unit : E. 94. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Trip Detection Filter LED Continuous Flash. Error Code : 94 Detective details: Detective Actuators: Inverter PCB «Protection stop by «overcurrent generation after inverter compressor start…
• Page 116
  Indicate or Display: Trouble shooting 47 Outdoor Unit : E. 95. 5 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Compressor Motor Loss of Filter LED Continuous Flash. Synchronization Error Code : 95 Detective details: Detective Actuators:…
• Page 117
  Indicate or Display: Trouble shooting 48 Outdoor Unit : E. 97. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Outdoor Unit Fan Motor Lock Error Filter LED Continuous Flash. Error Code : 97 Detective details: Detective Actuators:…
• Page 118
  Indicate or Display: Trouble shooting 49 Outdoor Unit : E. 97. 4 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Filter LED Continuous Flash. Outdoor Unit Fan Motor Undervoltage Error Code : 97 Detective details: Detective Actuators:…
• Page 119
  Indicate or Display: Trouble shooting 50 Outdoor Unit : E. 97. 5 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Outdoor Unit Fan Motor Temperature Filter LED Continuous Flash. Abnormal Error Code : 97 Detective details: Detective Actuators:…
• Page 120
  Indicate or Display: Trouble shooting 51 Outdoor Unit : E. 9U. 2 OUTDOOR UNIT Error Method: Indoor Unit : No display Slave Unit Error Error Code : 9U Detective details: Detective Actuators: Slave Unit Error signal rece ived from slave unit of same refrigerant system Check Point 1 : Check the slave unit Slave unit 7 seg display check Check by troubleshooting based on displayed error code.
• Page 121
  Indicate or Display: Trouble shooting 52 Outdoor Unit : E. A1. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Discharge Tempreture 1 Abnormal Filter LED Continuous Flash. Error Code : A1 Detective details: Detective Actuators: Discharge temperature thermistor 1…
• Page 122
  Indicate or Display: Trouble shooting 53 Outdoor Unit : E. A2. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Discharge Tempreture 2 Abnormal Filter LED Continuous Flash. Error Code : A2 Detective details: Detective Actuators: Discharge temperature thermistor 2…
• Page 123
  Indicate or Display: Trouble shooting 54 Outdoor Unit : E. A3. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Compressor 1 Tempreture Abnormal Filter LED Continuous Flash. Error Code : A3 Detective details: Detective Actuators: «Protection stop by «compressor 1 tempreture»…
• Page 124
  Indicate or Display: Trouble shooting 55 Outdoor Unit : E. A3. 2 OUTDOOR UNIT Error Method : Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Compressor 2 Tempreture Abnormal Filter LED Continuous Flash. Error Code : A3 Detective details: Detective Actuators:…
• Page 125
  Indicate or Display: Trouble shooting 56 Outdoor Unit : E. A4. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, High Pressure Abnormal Filter LED Continuous Flash. Error Code : A4 Detective details: Detective Actuators: Judgment from value sensed by discharge…
• Page 126
  Indicate or Display: Trouble shooting 57 Outdoor Unit : E. A4. 2 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, High Pressure Protection 1 Filter LED Continuous Flash. Error Code : A4 Detective details: Detective Actuators: High pressure switch 1…
• Page 127
  Indicate or Display: Trouble shooting 58 Outdoor Unit : E. A4. 3 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, HIgh Pressure Protection 2 Filter LED Continuous Flash. Error Code : A4 Detective details: Detective Actuators: High pressure switch 2…
• Page 128
  Indicate or Display: Trouble shooting 59 Outdoor Unit : E. A5. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Low Pressure Abnormal Filter LED Continuous Flash. Error Code : A5 Detective details: Detective Actuators: Suction pressure sensor…
• Page 129
  Indicate or Display: Trouble shooting 60 Outdoor Unit : E. AC. 4 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Heat Sink Tempreture Abnormal Filter LED Continuous Flash. Error Code : AC Detective details: Detective Actuators: Heat sink thermistor…
• Page 130
  Indicate or Display: Trouble shooting 61 Outdoor Unit : E. 28. 1 UTDOOR UNIT Error Method: Indoor Unit : No Display Auto Address Setting Error Error Code : 28 Detective Actuators: Detective details: When none of the connected indoor units answers during auto address Outdoor unit Main PCB And when abnormal answer signal is input.
• Page 131
  Indicate or Display: Trouble shooting 62-2 Outdoor Unit : E.1 4.5 INDOOR UNIT Error Method: Indoor Unit : No display Indoor unit number shortage error Error Code : No display Detective Actuators: Detective details: Indoor unit Controller PCB circuit When the indoor unit number decreases for 180 seconds from the memorized Indoor unit Communication PCB maximum indoor units number after power(Breaker) ON.

• Page 132: Trouble Shooting With No Error Code

  TROUBLE SHOOTING WITH NO ERROR CODE Trouble shooting 63 Forecast of Cause : Indoor Unit — No Power 1. Power Supply failure 2. Outside cause 3. Electrical Component defective Check Point 1 : Check Installation Condition Is not the breaker down? Check loose or removed connection cable.

• Page 133
  Trouble shooting 64 Forecast of Cause : Outdoor Unit — No Power 1. Power Supply failure 2. Outside cause 3. Electrical Components defective Check Point 1 : Check Installation Condition Isnt the breaker down? Check loose or removed connection cable. >>If abnormal condition is found, correct it by referring to Installation Manual or Data &…
• Page 134
  Trouble shooting 65 Forecast of Cause : 1. Setting/Connection failure 2. Outside cause No Operation (Power is ON) 3. Electrical Component defective Check Point 1 : Check indoor and outdoor installation condition Indoor Unit — Check incorrect wiring between Indoor Unit — Remote Control, or terminals between Indoor Units. Or, check if there is an open cable connection.
• Page 135
  Trouble shooting 66 Forecast of Cause : No Cooling 1. Indoor Unit error 2. Outdoor Unit error 3. Effect by Surrounding environment 4. Connection Pipe / Connection Wire failure 5. Refrigeration cycle failure Check Point 1 : Check Indoor Unit Does Indoor Unit FAN run on HIGH FAN? Is Air Filter dirty? Is Heat Exchanger clogged?

• Page 136: Abnormal Noise

  Trouble shooting 67 Forecast of Cause : 1. Abnormal installation (Indoor/Outdoor) 2. Fan failure(Indoor/Outdoor) Abnormal Noise 3. EEV failure (Indoor) 4. Compressor failure (Outdoor) Diagnosis method when Abnormal Noise is occurred Abnormal noise is coming from Indoor Unit Abnormal noise is coming from Outdoor Unit (Check and correct followings) (Check and correct followings) Is Main Unit installed in stable condition?

• Page 137: Trouble Shooting For Optional Parts

  4-3-3 Trouble Shooting for Optional Parts 1. External Switch Controller (UTY-TEKX) Trouble shooting 69 Error Contents : Symptom : Power Supply Error No operation & LED does not light up. Condition : 1. No power supply. Voltage error between red and black terminals of External Switch Controller. (Normal voltage: 12V plus minus 10%) 2.

• Page 138
  Trouble shooting 71 Error Contents : Symptom : LED repeats flashing 0.5sec ON & 1.0sec OFF. Transmission Error Condition : Normal communication with Indoor unit has been suspended for longer than 1 minute. Cause 1 : DIP switch setting defective Cause 3 : Ext.
• Page 139
  2. Signal Amplifier (UTY-VSGX) Trouble shooting 73 Error Contents : Symptom : No display Power Supply Error 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.

• Page 140: Address Setting Error

  Trouble shooting 75 Symptom : Error Contents : Error display [ 2 6 ] Address Setting Error No operation. Details : Condition of occurrence : Address is not set at Signal Amplifier. Release condition : Address setting mode is started up, and desired address has been set up. Cause 1 : External noise Cause 2 : Address is not set at Signal Amplifier.

• Page 141
  Trouble shooting 77 Symptom : Error Contents : Error display [ D9 (Flashing or Lighting) ] Communication Error B No operation. Details : Condition of occurrence : Communication error between CPU and Network Driver IC (CH_B side). Network Driver IC is defective. Release condition : Communication is normal between CPU and Network Driver IC (CH_B side).
• Page 142
  3. Network Convertor (UTY-VGGX) 1. When connecting a group remote controller to a network convertor Trouble shooting 79 Error Contents : Symptom : No display Power Supply Error Details : Condition of occurrence : Normal power is not supplied. 7 segment indicator is defective. Release condition : Normal power is supplied.
• Page 143
  Trouble shooting 81 Error Contents : Symptom : Communication Error Error Code display [ 1 2 ] Control/Display from Group Remote is not available. with Group Remote Controller Details : Condition of occurrence : The communication between Group Remote and Network Convertor was not normally performed. Release condition : When the communication between Group Remote and Network Convertor resumes normal operation.
• Page 144
  Trouble shooting 82 Symptom : Error Contents : Error Code display [ C A ] Software Error All the control items do not operate. Other Controls are left they are. Details : Condition of occurrence : Micon program performed an abnormal control. Error of inside information of EEPROM.
• Page 145
  3. Network Convertor (UTY-VGGX) 2. When connecting a single split type indoor unit to a network convertor Trouble shooting 84 Error Contents : Symptom : No display Power Supply Error Details : Condition of occurrence : Normal power is not supplied. 7 segment indicator is defective. Release condition : Normal power is supplied.
• Page 146
  Trouble shooting 86 Error Contents : Symptom : Communication Error Error Code display [ 1 2 ] Control/Display from Standard Remote s not available. Other controls are left as they are. with Standard Remote Controller Details : Condition of occurrence : The communication between Standard Remote Controller and Network Convertor was not normally performed.
• Page 147
  Trouble shooting 87 Error Contents : Symptom : Communication Error Error Code display [ 1 6 ] All the control items do not operate. with Indoor Unit Details : Condition of occurrence : The communication between Indoor unit and Network Convertor was not performed normally. Release condition : When the communication with Indoor unit is resumed normally.
• Page 148
  Trouble shooting 88 Error Contents : Symptom : Communication Error Error Code display [ 2 6 ] with Indoor Unit All the control items do not operate. Details : Condition of occurrence : The communication between Indoor unit and Network Convertor was not performed normally. Release condition : When the communication with Indoor unit is resumed normally.
• Page 149
  Trouble shooting 89 Symptom : Error Contents : Error Code display [ C A ] Software Error All the control items do not operate. Other Controls are left they are. Details : Condition of occurrence : Micon program performed an abnormal control. Error of inside information of EEPROM.
• Page 150
  4. Group Remote Controller (UTY-CGGY / CGGG) Trouble shooting 91 Symptom : Error Contents : Error Code display [ C 4 ] PCB Error OPERATION LED is flashing. Details : Condition of occurrence : When EEPROM can not be written, or the control port does not operate. Release condition : Power is reset.
• Page 151
  Trouble shooting 92 Symptom : Error Contents : Error Code display [ 1 2 ] Connection Error OPERATION LED is flashing. Details : Condition of occurrence : The valid signal has not been received from the convertor more than 90 seconds after the communication line became valid. Release condition : Valid signal is received from Convertor.
• Page 152
  Trouble shooting 94 Symptom : Error Contents : Error Code display [ 1 5 ] System Error OPERATION LED is flashing. Details : Condition of occurrence : 1. Registration started within 4 minutes after power ON 2. Indoor unit refrigerant system registered at controller connect ed to converter reached 3 or more ([26] error generated at converter) 3.
• Page 153
  Trouble shooting 95 Symptom : Error Contents : Error Code display [ 1 4 ] Transmission Error OPERATION LED is flashing. Details : Condition of occurrence : When the signal is cut off for more than 10 minutes from the registered Indoor unit (not including Slave unit). Release condition : 1.
• Page 154
  6. Wired(UTY-RNK ) and Simple Remote Controller (UTY-RSK ,RHK ) Trouble shooting 97 Symptom : Error Contents : Error Code display [ 1 2 ] Indoor Unit Remote Controller Communication Error Details : Condition of occurrence : When signal from indoor unit does not enter t enter Release condition : When signal from indoor unit entered Cause 1 : Check connection…
• Page 155
  Trouble shooting 98 Symptom : Error Contents : Error Code display [ 1 5 ] Incompatible Indoor Unit is Connected Details : Condition of occurrence : When information was not obtained from indoor unit Release condition : When information was obtained from indoor unit or unit Cause 1 : Check remote controller master/slave setting.
• Page 156
  7. System Controller (UTY-APGX) / Service Tool (UTY-ASGX) / Web Monitoring Tool (UTY-AMGX) (Referred to as «Service Tool» hereafter) Trouble shooting 99 Symptom : Error Contents : 1 or more units (but not all) are not detected after Scan. Unit Not Detected 1 or more units (but not all) are not listed in the system list after Scan.

• Page 157: Service Information

  4-4 SERVICE INFORMATION SERVICE INFORMATION Backup Operation Details : Backup operation is the operating method of replacing compressor while the system is running. Compressor can be replaced without stopping the system. In backup operation, cooling and heating capacity is decreased by the capacity of the separated outdoor unit.

• Page 158
  1-2. Backup operation when compressor of the slave unit #1 is broken. [Procedure] (Example: Three outdoor units are connected. the slave unit #1 is broken.) 1. Stop the operation, and turn off the all outdoor units. 2. Fully shut off the 3-way valve (Liquid, Gas) of the broken slave unit #1. 3.

• Page 159: Work Procedure After The Backup Operation

  4-4-2 Work procedure after the backup operation 1. Refrigerant shortage at the backup operation When excessive refrigerant accumulates in the defective outdoor unit during the backup operation, it becomes capacity shortage by refrigerant shortage. The meaning of the sign LPS : Low pressure sensor detection value EEV1 : Expansion valve #1 TH3 : Outdoor thermistor detection value TH4 : Suction thermistor detection value…

• Page 160: Service Parts Information

  4-5 SERVICE PARTS INFORMATION SERVICE PARTS INFORMATION 1 Compressor Diagnosis method of Compressor (If Outdoor Unit 7 segment LED displays Error, refer to Trouble shooting ) Abnormal noise Does not start up Stops soon after starting up Check power supply Check power supply voltage,open Is any Indoor Unit in operation? voltage,open fuse.

• Page 161
  SERVICE PARTS INFORMATION 2 Constant Speed Compressor Check Point 1 : Check Connection Check terminal connection of Compressor (loose or incorrect wiring) Check connection of magnet relay (Loose or incorrect wiring) Terminal cover opened terminal W (C) (BLACK) BLACK WHITE U (R) V (S) (RED)
• Page 162
  SERVICE PARTS INFORMATION 3 Inverter Compressor Check Point 1 : Check Connection Check terminal connection of Compressor (loose or incorrect wiring) Check connection of magnet relay (Loose or incorrect wiring) Terminal cover opened (WHITE) INVERTER PWB (BLACK) TM808 (RED) BLACK TM807 TM806 RED WHITE…
• Page 163
  SERVICE PARTS INFORMATION 4 Main PCB Filter PCB (Main) PWB UNIT (CT) Check Filter PCB (Main) -1 Is Fuse (15A/400V) open? Is Fuse (3.15A/250V) open? Check Filter PCB (Main) -2 Replace Filter PCB (Main) PCB pattern and parts on PCB defective? Check Filter PCB (Main) -3 Replace Filter PCB (Main) (1) Replace blown fuse.
• Page 164
  SERVICE PARTS INFORMATION 5 Inverter PCB Filter PCB (INV) Check Filter PCB (INV) -1 (1) Using a tester, measure the resistance value of both ends of the fuses (P501/502/503). (*Cannot be checked visually.) Are Fuses (25A/500V) open? Check Filter PCB (INV) -2 Replace Filter PCB (INV) PCB pattern and parts on PCB defective? Check Filter PCB (INV) -3…
• Page 165
  SERVICE PARTS INFORMATION 6 (Mounted on Inverter PCB) Check Point 1 Disconnect the connection wires between the Inverter PCB — electrolytic capacitor and Inverter PCB — Inverter Compressor. Set the tester to the «Resistance» mode, and measure the resistance between the following terminals. Terminal Red wire (P) — screw terminals U/V/W White wire (N) — screw terminals U/V/W…
• Page 166
  SERVICE PARTS INFORMATION 7 CT PCB Check Point 1 Measure the AC current flowing from TM302 and the DC voltage between connector pins 1-3 at that time. AC current TM302 TM301 CN302 CT PCB AC current — DC voltage characteristic DC voltage [V] 2.45 AC current [A]…
• Page 167
  SERVICE PARTS INFORMATION 8 3-Phase Diode Bridge Check Point 1 : Appearance check No fissures, breaks, damage, etc. at body and terminal section? Is the rear of the body coated with silicone grease? Are there no abnormalities at threaded parts (stripped threads, deformation, damage, etc.) ? Check Point 2 : Electric check In the 3-phase diode bridge single part state, set the tester to the «Resistance»…
• Page 168
  SERVICE PARTS INFORMATION 9 Reactor (INV) Reactor (DC Fan) Check Point 1 : Appearance check No fissures, breaks, damage, etc. at the body and winding section, terminals section? 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).
• Page 169
  SERVICE PARTS INFORMATION 10 Resistor, Cement Check Point 1 : Appearance check No fissures, breaks, damage, etc. at the body and terminals section? Check Point 2 : Electric check 1. Surge 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:…
• Page 170
  SERVICE PARTS INFORMATION 12 Terminal Check Point 1 : Appearance check No fissures, breaks, damage, etc. at the body and terminals section? Not clogged with foreign matter? Are there no abnormalities at threaded parts (Stripped threads, deformation, damage, etc.) ? Check Point 2 : Electric check No short between adjacent terminals? Conducts before and after same terminal?
• Page 171
  SERVICE PARTS INFORMATION 14 Indoor Unit Electronic Expansion Valve (EEV) Check Point 1 : Check Connections Check Connectors (Loose connector or open cable.) Duct Small Wall mount Floor/ Ceiling, Ceiling Cassette Wall mount Check Point 2 : Check Coil of EEV Remove connector, check each winding resistance of Coil.
• Page 172
  Check Point 5 : Check Opening and Closing Operation of Valve When Valve is closed, If it is open, it has no temp. difference between Inlet and Outlet. it has a temp. difference between Inlet and Outlet. OPEN CLOSE Example : Hot GUS Example : Hot GUS Pipe (In) Pipe (In)
• Page 173
  SERVICE PARTS INFORMATION 15 Outdoor Unit Electronic Expansion Valve (EEV1) Check Point 1 : Check Connections Check connection of connector (CN116) (Loose connector or open cable) BLUE EEV1 ORANGE YELLOW WHITE BLUE EEV2 ORANGE YELLOW WHITE Check Point 2 : Check Coil of EEV1 Check Point 3 : Check Voltage from Controller PCB Remove connector, check each winding resistance of Coil.
• Page 174
  SERVICE PARTS INFORMATION 16 Outdoor Unit Electronic Expansion Valve (EEV2) Check Point 1 : Check Connections Check connection of connector (CN117) (Loose connector or open cable) BLUE EEV1 ORANGE YELLOW WHITE BLUE EEV2 ORANGE YELLOW WHITE Check Point 2 : Check Coil of EEV2 Check Point 3 : Check Voltage from Controller PCB Remove connector, check each winding resistance of Coil.

• Page 175: Protection Function

  SERVICE PARTS INFORMATION 17 Outdoor Unit Solenoid Valve (SV1,SV2,SV3,SV5,SV6) Check Point 1 : Check connections Check Point 2 : Check Solenoid Coil Remove connector and check if coil is open. Check connection of connector. (Normal resistance value of each coil: 1495 ± 7% (Loose connector or open cable) >>…

• Page 176
  SERVICE PARTS INFORMATION 18 4-WAY VALVE Check Point 1 : Check Circuit connection Check Point 2 : Check Solenoid Coil Check the connection of connector CN 105 Remove CN6 from PCB and check the resistance value of coil Resistance Value BLUE SOLENOID COIL 4WV 1.5K…
• Page 177
  SERVICE PARTS INFORMATION 19 Indoor Unit Fan Motor Check Point : ARXB24LATH (Low Static pressure Duct Type) Check each winding resistance of the motor If Resistance value is abnormal, replace motor. BLUE (S-Lo) Lead wire Resistance value White Red 44.8 VIOLET (Low) 37.3 Black…
• Page 178
  Check Point : ARXA24/ 30LATH (Duct Type) Check each winding resistance of the motor If Resistance value is abnormal, replace motor. BLUE (S-Lo) Lead wire Resistance value White Red 47.1 VIOLET (Low) Black 27.4 PINK (Med) Thermal protector Pink 8.00 150°C RED (Hi) Pink…
• Page 179
  Check Point : ARXB07LALH (Compact Duct Type) Check each winding resistance of the motor If Resistance value is abnormal, replace motor. BLUE (S-Lo) Lead wire Resistance value White Red VIOLET (Low) Black PINK (Med) Thermal protector Pink 140°C RED (Hi) Pink Violet BLACK…
• Page 180
  Check Point : ARXB14LALH (Compact Duct Type) Check each winding resistance of the motor If Resistance value is abnormal, replace motor. BLUE (S-Lo) Lead wire Resistance value White Red 136.5 VIOLET (Low) Black 125.6 PINK (Med) Thermal protector Pink 23.7 140°C RED (Hi) Pink…
• Page 181
  Check Point : AB*A12/ 14LATH (Floor/ Ceiling Type) Check each winding resistance of the motor If Resistance value is abnormal, replace motor. BLUE (Low) Lead wire Resistance value VIOLET (Med) White Red Thermal protector 150°C RED (Hi) Black 59.5 Violet (AC) BLACK Violet…
• Page 182
  Check Point : ARXC36LATH (High Static Pressure Duct Type) Check each winding resistance of the motor If Resistance value is abnormal, replace motor. BLUE (Low) Lead wire Resistance value VIOLET (Med) White Red 13.4 Thermal protector 150°C RED (Hi) Black 16.9 Violet 11.5…
• Page 183
  Check Point : AS A18 / 24 / 30 LATH(Wall Mounted Type) Check each winding resistance of the motor If Resistance value is abnormal, replace motor. BLUE (Low) Lead wire Resistance value RED (Hi) BLACK White Red (AC) YELLOW Blue Black 25.5 Blue…
• Page 184
  SERVICE PARTS INFORMATION 20 Discharge Pressure Sensor Suction Pressure Sensor 1. Discharge Pressure Sensor Check Point : Check Voltage from Main PCB With the connector connected to the PCB, measure the voltage between CN118:2-3 of the Main PCB. PRESSURE WHITE SENSOR BLACK (HIGH)
• Page 185
  SERVICE PARTS INFORMATION 21 Pressure switch 1,2 Type of contact Pressure Characteristics of pressure switch Pressure switch 1 Pressure switch 2 (For Inverter comp.) (For Constant speed comp.) 4.2 0.1MPa 4.2 0.1MPa Contact : Short Open Contact : Open Short 3.2 0.15MPa 3.2 0.15MPa 04-123…
• Page 186
  SERVICE PARTS INFORMATION 22 Thermistor Check Point : Check Thermistor resistance value Remove connector and check Thermistor resistance value. Resistance Value [ k ] Temperature [°C] Thermistor A Thermistor B Thermistor C Thermistor D — 20 105.4 27.4 — 10 27.8 58.2 20.7…
• Page 187
  5. APPENDING DATA (UNIT)
• Page 189
  5-1 REFRIGERANT CIRCUIT MODELS : AJ A72LALH, AJ A90LALH Outdoor unit EEV2 FAN1 SCHEX EEV1 HPSW1 CMP1 TH10 Indoor unit1 TH21 FAN21 TH23 EEV21 TH22 LIQUID LINE HEX21 GAS LINE Indoor unit2 TH21 FAN21 : Check valve EEV21 TH23 TH22 HEX21 : Capillary : Strainer…
• Page 190
  MODEL : AJ 108LALH Outdoor unit EEV 2 FA N1 SC H EX EEV 1 HE X H PS H PSW 1 H PSW 2 SV 1 TH11 C M P1 C M P2 IN V SV 2 SV 6 A CM SV 3 Indoor unit1…
• Page 191
  MODELS : AJ 126LALH, AJ 144LALH Outdoor unit EEV 2 SV 5 FA N1 SC H EX EEV 1 HE X H PS H PSW 1 H PSW 2 SV 1 TH11 C M P1 C M P2 IN V SV 2 TH10 A CM…

• Page 192: Symbol Description

  SYMBOL DESCRIPTION Outdoor unit MARK DESCRIPTION CMP 1 Compressor 1 (Inverter type) CMP 2 Compressor 2 (Constant speed type) Heat exchanger FAN 1 Fan 1 Accumulator Receiver tanker Oil separator SCHEX Sub-cool heat exchanger High pressure sensor Low pressure sensor HPSW1 High pressure sensor switch 1 4-way valve EEV 1 Electric expansion valve 1…

• Page 193: Wiring Diagram

  5-2 WIRING DIAGRAM 5-2-1 Indoor Unit MODELS : AUXB07, AUXB09, AUXB12, AUXB14, AUXB18, AUXB24 05-05…

• 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…
• Page 201
  MODELS : AB A12, AB A14, AB A18, AB A24 05-12…
• Page 202
  MODELS : AB A12LBTH, AB A14LBTH AB A18LBTH, AB A24LBTH 05-12…
• Page 203
  MODELS : AB A30, AB A36, AB A45, AB A54 05-13…
• Page 204
  MODELS : AB A30LBTH, AB A36LBTH AB A45LBTH, AB A54LBTH 05-13…
• 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
  MODELS : AS A18LACH, AS A24LACH, AS A30LACH 05-16…

• Page 209: Outdoor Unit

  5-2-2 Outdoor Unit MODELS : AJ A72LALH, AJ A90LALH R S T N 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 05-17…

• Page 210
  MODEL : AJ 108LALH R S T N 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…
• Page 211
  MODELS : AJ 126LALH, AJ 144LALH R S T N 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 05-19…

• Page 212: Characteristics Of Sensors

  5-3 CHARACTERISTICS OF SENSORS 5-3-1 Pressure senser 1. Discharge Pressure Sensor With the connector connected to the PCB, measure the voltage between CN118 : 2-3 of the Main PCB. 5.00 Pressure [MPa] Pressure 0.00 0.10 0.20 0.30 0.40 0.50 0.70 0.80 0.90 1.00…

• Page 213: Thermistor Resistance

  5-3-2 Thermistor resistance Thermistor resistance value <Outdoor unit side> Temperature Resistance Value [ k ] [°C] Thermistor A Thermistor B Thermistor C Thermistor D — 20 105.4 27.4 — 10 27.8 58.2 21.0 20.7 44.0 15.8 168.6 16.1 33.6 129.8 12.4 12.2 25.9…

• Page 214: Saturation Temperature And Saturation Pressure Tables (R410A)

  5-3-3 Saturation temperature and saturation pressure tables (R410A) (Pressure: Gauge pressure) Saturation pressure (Mpa) Saturation pressure (Mpa) Saturation temperature (°C) Saturation Temp. Temp. pressure (°C) (°C) (Mpa) Saturated liquid Saturated gas Saturated liquid Saturated gas Saturated liquid Saturated gas 0.1722 0.1717 1.275 1.270…

• Page 215: Temperature And Pressure Of Refrigerant (Graph)

  5-3-4 Temperature and pressure of refrigerant (Graph) Saturated liquid temperature (°C) 05-23…

• Page 216
  6. DISASSEMBLY PROCESS…
• Page 224
  10. THERMISTORS removal Cut the binder. Remove the heat insulation. 11. SOLENOID COILS (4way valve and Solenoid valves) removal Remove the mounting screw. Remove the SOLENOID COIL. 12. EEV COILS removal Remove the EEV coil by hand. There are two coils. 13.
• Page 227
  Remove the TERMINAL COVER. Remove the 3 mounting screws Remove the CRANK CASE HEATER. of TERMINAL. [ U : RED, W : BLACK, V : WHITE ] Thermistor (Discharge) Heat insulation Remove the COMP BOLTS. (3 places) Thermistor (comp. temp.) Remove the Thermistor (comp.temp.) and Thermistor (Discharge).
• Page 228
  [REFERENCE DATA] Model : AJY126LALF (2 compressor model) Thermistor (Discharge) Thermistor (comp.temp.) Oil balance pipe TERMINAL [ U : RED, W : BLACK, V : WHITE ] Constant speed Comp. Crank Case Heater Range Caution Oil flows out when piping is cut when a lot of oil remains. So receive oil with the rag etc.
• Page 229
  17. Precautions for exchange of refrigerant-cycle-parts (1) During exchange the following parts shall be protected by wet rag and not make the allowable temperature or more. (2) Remove the heat insulation when there is the heat insulation near the welding place. Move and cool it when its detaching is difficult.
• Page 230
  1116, Suenaga, Takatsu-ku, Kawasaki 213-8502, Japan Product specifications are subject to change without notice. » » is a worldwide trademark of FUJITSU GENERAL LIMITED. © Copyright 2004 Fujitsu General Limited. All rights reserved. Printed in Japan 2009.06.09…

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