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Fujitsu AUXB04GALH Service Manual

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SERVICE MANUAL
Multi Air Conditioning System for Buildings
Large Capacity Multi VRF System
DC Inverter Control Compressor
Long Piping System Design
High Efficiency Refrigerant R410A

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  Summary of Contents for Fujitsu AUXB04GALH

  • Page 1 SERVICE MANUAL Multi Air Conditioning System for Buildings Large Capacity Multi VRF System DC Inverter Control Compressor Long Piping System Design High Efficiency Refrigerant R410A...
  • Page 2: Table Of Contents

    CONTENTS 1. TEST RUN 1-1 EXECUTION PROCEDURE AND EXECUTION PRECAUTIONS......01-01 1-2 CHECK ITEMS BEFORE POWER ON............... 01-03 1-2-1 Power source Inspection..................01-03 1-2-2 Outdoor unit field setting inspection..............01-04 1-2-3 Indoor unit field setting inspection................ 01-04 1-2-4 Transmission wire installation inspection.............. 01-05 1-2-5 Piping installation inspection.................
  • Page 3 CONTENTS 2-7 PROTECTIVE FUNCTION..................02-16 2-7-1 Discharge temperature protection............... 02-16 02-18 2-7-2 High pressure protection..................2-7-3 Low pressure protection..................02-20 02-21 2-7-4 Heatsink temperature protection................. 2-7-5 Compressor temperature protection..............02-21 2-7-6 O.U Heat - Ex.1(2) Gas Temp. abnormal stop............ 02-21 2-7-7 Over current protection..................
  • Page 4 CONTENTS 4. TROUBLE SHOOTING 4-1 NORMAL OPERATION....................04-01 04-01 4-1-1 Indoor Unit Display....................4-1-2 Outdoor Unit Display................... 04-02 4-2 ABNORMAL OPERATION..................04-03 4-2-1 Error code Display....................04-03 4-2-2 Indoor Unit Display....................04-04 4-2-3 Outdoor Unit Display................... 04-04 4-2-4 Remote Controller Display................... 04-05 4-2-5 Trouble shooting index - Error code List -............
  • Page 5 1. TEST RUN...
  • Page 6: 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 7 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 8: Check Items Before Power On

    1-2 Check Items Before Power ON 1-2-1 Power source Inspection sheet Check Item Check contents Judgement Present Status Ref. circuit name: _________________ Power supply / 4W / (342 - 456V) / 50Hz Master (AJ* ____L) :_____(A) For AJ* 072L : 20A Circuit Breaker Size (A) For AJ* 090/ 108L : 25A...
  • Page 9: Outdoor Unit Field Setting Inspection

    1-2-2 Outdoor unit field setting inspection sheet Check Item Check contents Judgement Present Status No. of outdoor unit for one ref. circuit: ______, Ref. circuit name: _________________ Appearance Shall be no deformation OK / Serial No. Master: Slave -1: Slave -2: Connection points &...
  • Page 10: Transmission Wire Installation Inspection

    1-2-4 Transmission wire installation inspection sheet 1/3 Check Item Check contents Judgement Present Status Number of ref. circuit connected in the network system: ______, Ref. addresses: ______________(00 - 99) Is it LonWorks compatible? Outlook Network Transmission wire Maker name? System Wire specification 0.33mm , shield wire...
  • Page 11 1-2-4 Transmission wire installation inspection sheet 3/3 Check Item Check contents Judgement Present Status Number of ref. circuit connected in the network system : ______, Ref. addresses :_______ _______________(00 For one VRF Network System IU number : _____ No. of IUs & OUs 400 &...
  • Page 12: Piping Installation Inspection

    1-2-5 Piping installation inspection sheet Check Item Check contents Judgement Present Status Ref. circuit name : _________________________________, Ref. address: ______________ (00 99) Insulation & Fastening Insulated without gap & properly fastened (Yes / No) Yes / Suction line filter Is there any external filter in the suction line Outlook Oil Trap If Distance between OUs 2m ,...
  • Page 13: Refrigerant Charge Amount Inspection

    1-2-6 Refrigerant charge amount inspection sheet Check Item Check contents Judgement Present Status Ref. circuit name: ____________________________, Ref. address :________(00 99) OU Model Name Additional Refrigerant Amount for OU Outdoor Unit AJ* 072L / AJ* 090L 0 (kg) AJ* 072L / AJ* 090L / AJ* 108L (kg) AJ* 126L / AJ* 144L / AJ* 162L AJ* 108L / AJ* 126L / AJ* 144L / AJ* 162L : 3.3 (kg)
  • Page 14: Check Items After Power On

    1-3 Check Items After Power ON Overview of system operation check procedure Step-1: Connect Service Tool PC to the VRF V-III system. Do scaning of refrigerant system which should be commissioned. Step-2: Compare the number of installed units (OU and IU) with the System List data obtained from the Service Tool. Step-3: Operate all Indoor Units under Test Mode Cooling (Select Test mode either cool or heat based on ambient temperature.).
  • Page 15: Installed Unit And Their Addresses Check

    1-3-3 Installed unit and their addresses check sheet Check Contents Check items Checking method Judgement Present Status Ref. circuit : Name _________________, Ref. address ________(select from 00 to 99) Design value Check status Installed units Connected number of IU ______ Number of units and their Checked by Number of IU...
  • Page 16: Transmission Line Connection Check

    1-3-4 Transmission line connection check sheet Note: The following check method by using test-run is necessary for checking of incorrect transmission wire connection. Check Contents Check items Checking method Judgement Present Status Ref. circuit : Name _________________, Ref. address ________(select from 00 to 99) Check status Design value Transmission line...
  • Page 17: Operation Check Sheet

    1-3-5 Operation check sheet Check Contents Judgement Present Status Refrigerant Circuit : Name _________________, Address ________(00 Degree of sub-cool at OU sub - cooler side should be, Pulse value EEV3 should be, EEV3 400P EEV3 Discharge refrigerant pressure should be, 2.5MPa 3.3MPa Test-run operation...
  • Page 18: Test Run Operation

    1-4 Test Run Operation 1-4-1 Test Run From Outdoor unit 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)
  • Page 19: Test Run From Remote Controller

    1-4-2 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 20: Central Remote Controller

    UTY - DTG 4. Touch panel controller (1) Select the objective you want to test run. Select the objective icon or list at the monitor screen. (Multiple selections is possible) Select all the devices registered as objectives by pressing "Select All" on the monitor screen. (2) After objective selection at (1), switch to the <Setting screen>...
  • Page 21 UTY - RNR 6. 2-wire type wired remote controller (1) Press "Menu" on the monitor screen. the < Main Menu screen > is displayed. (2) Press "Next Page" and press "Maintenance" (3) Press "Next Page" and press "Test Run". the <Test run screen > is displayed. (4) Press "OK"...
  • Page 22: Test Run Control

    1-5 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 23 1-6 Field Setting And Monitor Mode List for Outdoor unit ITEM ITEM Classification Information contents Setting Mode CODE No. 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...
  • Page 24 ITEM ITEM Classification Setting Function Defalt Setting Mode CODE No. CODE No. Install Pipe length setting 40-65m Push switch on 0-40m outdoor unit PCB 65-90m 90-120m Setting mode 120-165m [ F2 ] Correction Sequential start shift Normal 21sec. Delay 42sec. Delay 63sec.
  • Page 25 ITEM ITEM Default Setting Function Setting Mode CODE No. CODE No. Forced Cooling test run Forced thermostat-ON in Cooling Push switch on outdoor unit PCB operation Heating test run Forced thermostat-ON in Heating Function mode [ F3 ] Test run stop Test run is stopped (Forbidden) 03,04...
  • Page 26 1-7 Field Setting / Function Setting for Indoor unit ITEM ITEM Classification Setting Mode Default Setting Function 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...
  • Page 27: Field Setting / Function Setting For Outdoor Air Unit

    1-8 Field Setting / Function Setting for Outdoor air unit ITEM ITEM Classification Setting Mode Default Setting Function 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...
  • Page 28 2. OUTDOOR UNIT OPERATION CONTROL...
  • Page 29: Refrigerant Circuit

    2. OUTDOOR UNIT 2-1 REFRIGERANT CIRCUIT Outdoor unit 4WV 1 HEX1 EEV1 EEV3 TH10 EEV2 4WV 2 HEX2 FAN1 SCHEX HPSW1 4WV 3 (INV) TH11 : Capillary : Strainer Indoor unit1 TH21 FAN21 TH24 EEV21 TH22 LIQUID LINE HEX21 GAS LINE No.
  • Page 30 2-1-1 REFRIGERANT CIRCUIT for Outdoor air unit Outdoor air unit (ARXH054/ 096GTAH) TH25 FAN21 TH24 EEV21 TH22 HEX21 TH21 Outdoor air unit (ARXH072GTAH) TH25 FAN21 FAN22 TH24 EEV21 TH22 HEX21 TH21 : Capillary : Strainer No. Part name Function Heat exchanger outlet thermistor Detects the temperature of refrigerant Suction airflow temp.
  • Page 31: Input / Output List

    2-2 INPUT / OUTPUT LIST Input / output or kind of detail Control range Pressure sensor Measure range 0.0 to 5.0MPa High pressure sensor Pressure sensor Measure range 0.0 to 1.7MPa Low pressure sensor Measure range 10 to 130 Themistor Discharge temperature sensor 1 Themistor Measure range -25 to 58...
  • Page 32: Compressor Operation

    2-3 COMPRESSOR OPERATION 2-3-1 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 33: Compressor Speed Control

    2-3-2 Compressor speed control (1) Speed range and controlling - On operation range: 20 - 115 rps* - Changing interval: 60 sec. - When the multi connection outdoor unit has the same type of compressor, all of compressors rotational speed are controlled with the same speed at the normal operating condition.
  • Page 34: Capacity Control

    2-3-3 Capacity Control (1) Capacity of compressor operation The inverter compressor is able to control the amount of required refrigerant circulation in details. 0.1 rps [rps] on controlling steps1 100/115 On operating range: 20 to 115 rps Cooling 100 rps Heating 115 rps Operating Range (20 to 115 rps)
  • Page 35: Compressor Sequence Operation

    2-3-4 Compressor Sequence Operation Make starting sequence and start and stop of the compressors in accordance with the below sequence. Starting sequence condition Example) Starting sequence : Compressor started first, compressor stopped last Starting sequence : Compressor started 2nd, compressor stopped 2nd from the end Starting sequence : Compressor started 3nd, compressor stopped 3nd from the end Rotate the stating sequence under the following conditions:...
  • Page 36: Fan Control

    2-4 FAN CONTROL 2-4-1 Cooling Operation The outdoor fan speed at start up is 300 rpm Fan speed (rpm) Fan step AJ* 072LALBH AJ* 090LALBH AJ* 108LALBH AJ* 126LALBH AJ* 144LALBH AJ* 162LALBH AJ* 072LATBH AJ* 090LATBH AJ* 108LATBH AJ* 126LATBH AJ* 144LATBH AJ* 162LATBH intermittent 6...
  • Page 37: Heating Operation

    Intermittent fan mode When switched from normal fan step to intermittent fan step, always start from 300rpm/7sec. When there was a change during intermittent step 1-6, switching is performed at the time the current speed duration time reaches time-up. Fan speed 0 rpm Fan speed 300 rpm Fan step Fan mode...
  • Page 38: Expansion Valve Control

    2-5 EXPANSION VALVE CONTROL The EEV controls the flow of refrigerant Control range Contrl and detection Operation mode operation range stop Cooling 0 pulse 480 pulses EEV 1 EEV 2 - SH control (TH7,TH8 - LPS ) Heating "Target SH: 4 "...
  • Page 39: Special Operation

    2-6 SPECIAL OPERATION 2-6-1 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 40: Defrost Operation Control

    2-6-3 Defrost Operation Control < Defrosting start condition > Accumulated heating operation time is 40 minutes or longer (Accumulated heating operation time is reset at the end of cooling operation or defrosting operation.) One of Heat-Ex satisfies condition below Condition : Accumulated operating time is 150 minutes* or longer: "Heat exchange liquid temperature (TH9 and TH10) -2°C"...
  • Page 41 < Operating state of each part during defrosting operation > Actuator Preparation process On Defrost operatiom Finishing process All compressor operaiotn Stop All compressor start Compressor All compressor operaiotn Stop Change Condensor (OFF) Condensor (OFF) Heat Ex(4WV) Keeps the operation mode Stops Stops Stops...
  • Page 42: Low Noise Mode

    2-6-4 Low noise mode When the low noise mode setting ON from Push SW or External input or System controller Input, the outdoor unit operates in the low noise mode as follows. « Setting and corresponding operations » Low noise mode setting External Input (CN131) Low noise level setting Capacity priority setting...
  • Page 43: Snow Falling Protection Fan Mode -Default Setting -

    2-6-5 Snow Falling Protection Fan Mode -Default Setting - The fan rotates compulsorily at the maximum speed when the outdoor temperature becomes 5 or less. 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 44: Protective Function

    2-7 PROTECTIVE FUNCTION 2-7-1 Discharge temperature protection Protective function Detect device Cool Heat Display Starting conditions Release conditions Operation Discharge Discharge temp. Cooling : Below 90 C temperature sensor <TH1> Discharge temperature protection 1 above 95 C EEV3 + 30pls/30 sec. Heating : Below 97 C Discharge temperature...
  • Page 45 Discharge temperature protection -Summary- Protection controlling range in Cooling mode DTP COMP STOP: Error Indication DTP2: Outdoor unit rotation excution DTP3: limited Compressor speed controlling DTP1: EEV3 Liquid injection controlling Note: In cooling mode, there are 4 kind of discharge temp. protections are existing and, The protection operation by EEV exists only on the Outdoor unit.
  • Page 46: High Pressure Protection

    2-7-2 High pressure protection Display Start condition Release condition Operation Protective function Detect device Cool Heat High pressure High Above 3.94MPa 60 sec. elapsed and SV2 =>ON protection 1 pressure Below 3.70MPa sensor High pressure High Pattern 1 60 sec. elapsed and SV2 =>ON protection 2 pressure...
  • Page 47 High pressure protection -Summary- Protection controlling range in cooling operaing mode HPP Stop2 : Error Indication E A 42 HPP Stop1: Error Indication E A 41 HP Protection 1: SV2 ON Abnromal HP protection ( Pattern 2) : Compressor rotation speed lessen 18.5 rps (-15.0 rps) / 30sec.
  • Page 48: Low Pressure Protection

    2-7-3 Low pressure protection Detect device Display Start condition Release condition Operation Protective function Cool Heat Low pressure Low pressure Below 0.10MPa 3minutes elapsed and SV1 =>ON protection 1 sensor Above 0.17MPa Low pressure Low pressure After compressor started 3minutes elapsed and Operating Indoor unit EEV protection 2 sensor...
  • Page 49: Heatsink Temperature Protection

    2-7-4 Heatsink temperature protection ( ) : AJ* 108/ 126/ 144/ 162L Operation Protective function Detect device Display Start condition Release condition Cool Heat Heat sink Heatsink temp Above 75 C (75 Below 75 C (75 Cancel Fan speed temperature sensor step down.
  • Page 50: Over Current Protection

    2-7-7 Over current protection Protective function Detect device Cool Heat Display Start condition Release condition Operation E941 Over current protection Compressor stop and circuit detects (Abnormal Error indication (permanent current) in 5 times during "Trip Detection" stop) compressor operatng. Error reset (push Overcurrecnt Inverter PCB button SW)
  • Page 51: Fan Motor, Motor Driver Abnormal Stop Protection

    2-7-10 Fan Motor, Motor Driver abnormal stop protection Detect Operation Protective function Display Start condition Release condition Cool Heat device E97. 1 1. When the outdoor fan rotation speed is Embeded Fan Motor lock device less than 100rpm in 20seconds after protection stop fan motor starts.
  • Page 52 3. INDOOR UNIT OPERATION...
  • Page 53: Fan Control

    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 54: 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 55 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 56: Operation Mode Control For Outdoor Air Unit

    3-2-2 Operation Mode Control for Outdoor air unit Each operation mode is controlled as below. (1) Stop mode Outdoor air unit fan motor : OFF Electric expansion valve : Stop pulse Drain pump : Turns ON-OFF by the drain pump control function Solenoid valve : Closed (2) Cool and Heat Mode...
  • Page 57 (3) Priority mode The purpose of the priority mode is to restrict operation commands (heating, cooling) from the connected outdoor air 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: Restricted operation mode Priority mode No restrictions...
  • Page 58: Auto Changeover

    3-2-3 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 59: Auto Changeover Heating / Cooling Operation For Outdoor Air Unit

    3-2-4 Auto Changeover Heating / Cooling Operation for Outdoor air unit Function is available when an outdoor air unit set as the administrative indoor unit (Management Outdoor air unit). Refer to the setting Method Setting Method 1. Switch operation mode management to "Management by outdoor air unit" by Outdoor unit PUSH-SW. 2.
  • Page 60: Cool" Position

    3-2-5 "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 61: Cool" Position For Outdoor Air Unit

    3-2-7 "COOL" Position for Outdoor air unit When using the cooling mode, set the temperature to a value lower than the discharge airflow temperature, otherwise the outdoor air unit will not start the cooling operation and only the fan will rotate. An example for COOLING TEMPERATURE CONTROL time chart (Manual setting) Outdoor temp.
  • Page 62: 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 63 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 64 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 Air flow direction set Range of swing The SWING operation may stop temporarily when the air conditioner's fan is not operating, or when operating 1 to 4 at very low speeds.
  • Page 65: Electronic Expansion Valve Control

    3-4-1 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 66: Operation Control

    3-4-2 ELECTRONIC EXPANSION VALVE CONTROL for Outdoor air unit 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 by Thermo-OFF condition. Outdoor unit Condition EEV Condition Fully closed Cooling...
  • Page 67: Drain Pump Operation

    3-5-1 DRAIN PUMP OPERATION (1) When cooling and refrigerant circulation starts, the drain pump starts simultaneously. (2) The drain pump operates continuously for 3 minutes after the refrigerant circulation stopped. (3) When the refrigent circulation is stopped by a start of indoor heat exchanger frost prevention operation, the drain pump will turn off in 1 hour after the end of indoor heat exchanger frost prevention operation.
  • Page 68: 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 69: Outdoor Temperature Protected Operation For Outdoor Air Unit

    3-6-4 Outdoor temperature protected operation for Outdoor air unit 1. COOL OPERATION The contents of operation is controlled as following based on the suction airflow temperature. a) Operation mode management is made "Management by indoor unit", and outdoor air unit is master indoor unit. b) Cases Other than (a) Suction airflow Suction airflow...
  • Page 70: Dx Kit

    3-7 DX-KIT 3-7-1 SYSTEM CONFIGURATION 1. FGL remote/controller connection The DX kit is controlled by a VRF operation device and use the external output of the DX kit to performe the AHU operation indirectly. Control devices can be unified with FGL devices. FGL RC.
  • Page 71: Fundamental Functions

    3-7-2 FUNDAMENTAL FUNCTIONS 1. FGL remote/controller connection Air conditioning control system Intake temperature control Discharge temperature control (SET3-3) Discharge temperature Intake temperature (Room temperature) Set temperature Cooling: 14 to 25°C Cooling: 18 to 30°C objective Heating: 17 to 28°C Heating: 10 to 30°C Cooling Cooling Thermostat OFF...
  • Page 72: Fundamental Functions

    3-7-3 FUNDAMENTAL FUNCTIONS Cooling operation When using the cooling mode, set the temperature to a value lower than the target controlling temperature, otherwise the External refrigeration cycle equipment will not start the cooling operation. An example for COOLING TEMPERATURE CONTROL time chart + 0.5°C: Air intake ctrl + 0.5°C: Air discharge ctrl •...
  • Page 73: Electronic Expansion Valve Control For Dx-Kit

    3-7-4 ELECTRONIC EXPANSION VALVE CONTROL for DX-KIT 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 by Thermo-OFF condition. Outdoor unit Condition EEV Condition Fully closed Cooling Fully closed...
  • Page 74: Functions

    3-7-6 FUNCTION Auto Restart The air conditioner restarts with the previous setting operation. Freeze Prevention 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 75: Trouble Shooting

    4. TROUBLE SHOOTING...
  • Page 76: 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 77: 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 Chapter 02. Oil Recovery Operation (Outdoor unit operation control) "O" IL "R" ECOVERY Refer to Chapter 02. Defrost Operation (Outdoor unit operation control) "D"...
  • Page 78: Abnormal Operation

    4-2 ABNORMAL OPERATION 4-2-1 Error code Display An Error code is represented by 3 digit characters. The first 2 digit means the subsection Error code, and the last 1 digit means the specifics Error code. Ex.) Indoor unit Network communication Error 1 4 .
  • Page 79: Indoor Unit Display

    4-2-2 Indoor Unit Display Error Indication Flashing Pattern Example : Indoor Unit Main PCB Error (Operation LED : 3 times, Timer LED : 2 times) 1 cycle 1.0s 0.5s 0.5s 0.5s 0.5s 0.5s 0.5s Operation LED 1.0s 3.0s Timer LED 1.0s 4.0s 4.0s...
  • Page 80: Remote Controller Display

    4-2-4 Remote Controller Display << SIMPLE REMOTE CONTROLLER >> UTY-RSKYT ERROR CODE DISPLAY Error code If an error occurs, the following display will be shown. ( “ “ will appear in the set room temperature display.) If “ “ is displayed, immediately contact authorized service personnel.
  • Page 81: Trouble Shooting Index - Error Code List

    4-2-5 Trouble shooting index - Error code List 1/2 - Display Target A Display Target B Display Target C Display Target D Simple Wired remote controller Group Remote controller Service Tool 7 seg. Display on Outdoor unit Controller PCB 2 / 3 wires Wired remote controller Central Remote controller Indoor unit LED brinking times, Touch- Panel controller...
  • Page 82: Trouble Shooting Index - No Error Code

    4-2-5 Trouble shooting index - Error code List 2/2 - Display Target A Display Target B Display Target C Display Target D Simple Wired remote controller Group Remote controller Service Tool 7 seg. Display on Outdoor unit Controller PCB 2 / 3 wires Wired remote controller Central Remote controller Indoor unit LED brinking times, Touch- Panel controller...
  • Page 83: Trouble Level Of System

    4-2-7 TROUBLE LEVEL OF SYSTEM << System Condition when Outdoor Unit Error is occurred >> Trouble Level System Condition Outdoor unit Condition Not indicated on Indoor Unit and Indicated on Indoor Unit (*1) and Peripheral unit. Peripheral unit. Indicated on Service Tool. Indicated on Service Tool.
  • Page 84 4-2-7 TROUBLE LEVEL OF SYSTEM << System Condition when Outdoor Unit Error is occurred >> Trouble Level System Condition Outdoor unit Condition Not indicated on Indoor Unit and Indicated on Indoor Unit (*1) and Peripheral unit. Peripheral unit. Indicated on Service Tool. Indicated on Service Tool.
  • Page 85: Error History Mode

    4-2-8 ERROR HISTORY MODE When the abnormality occurred, the Outdoor unit 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 86: Trouble Shooting With Error Code

    4-2-9 TROUBLE SHOOTING WITH ERROR CODE Indicate or Display: Trouble shooting 1 E12.1 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. < 1 2 > Communication Error Error Code : 1 2...
  • Page 87 Indicate or Display: Trouble shooting 2 E12.2 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 signal Error Filter LED Continuous Flash. Remote Controller : 1 2 Detective Actuators: Detective details: Indoor unit Controller PCB circuit...
  • Page 88 Indicate or Display: Trouble shooting 3 E12.3 Outdoor Unit : E.5 U.1 INDOOR UNIT Error Method: Indoor Unit : Operation LED 1 times Flash, Timer LED 2 Times Flash, Number excess of device in Wired Filter LED Continuous Flash. remote contorller system (2 Wires RC) Error Code : 1 2 Detective Actuators:...
  • Page 89 Trouble shooting 4 1 3. 1 Indicate or Display: OUTDOOR UNIT Error Method: Outdoor Unit : E. 1 3. 1 Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Communication Error Between Filter LED Continuous Flash. Outdoor unit Error Code : 9 U / 1 3...
  • Page 90 Indicate or Display: Trouble shooting 5 E14.1 OUTDOOR UNIT Error Method: Outdoor Unit : E. 1 4. 1 Indoor Unit : No display / Outdoor Unit Network Operation LED 1 times Flash, Timer LED 4 Times Flash, Communication 1 Error Filter LED Continuous Flash.
  • Page 91 Indicate or Display: Trouble shooting 6 E14. 2 Outdoor Unit : E. 1 4. 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 Operation LED 1 times Flash, Timer LED 4 Times Flash, Filter LED Continuous Flash.
  • Page 92 Indicate or Display: Trouble shooting 7 E14. 3 Outdoor Unit : E.1 4. 1 / 1 4. 2 * INDOOR UNIT Error Method: Indoor Unit : Operation LED 1 times Flash, Timer LED 4 Times Flash, Indoor unit Network communication Filter LED Continuous Flash.
  • Page 93 Indicate or Display: Trouble shooting 8 E14. 5 Outdoor Unit : E.1 4. 5 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, The number of Indoor unit shortage Filter LED Continuous Flash. / Error No display (When DIP-SW4-1 is OFF.) Error Code...
  • Page 94 Indicate or Display: Trouble shooting 9 E16. 1 Outdoor Unit : E.1 4.1, 1 4.2 * INDOOR UNIT Error Method: Indoor Unit : Operation LED 1 times Flash, Timer LED 6 Times Flash, Filter LED Continuous Flash. Transmission PCB Connection Error Error Code : 1 6 * * Outdoor unit indicates 1 4.1 or 14.2 (No communication from Indoor unit)
  • Page 95 Indicate or Display: Trouble shooting 10 E16. 4 Outdoor Unit : No Display INDOOR UNIT Error Method: Indoor Unit : No Display Communication Error Between Controller and Indoor unit Error Code : 1 6 (Peripheral Unit ) Detective Actuators: Detective details: Indoor unit Controller PCB circuit When the cut-off of network communication is detected (more than 90 seconds Indoor unit Communication PCB...
  • Page 96 Trouble shooting 11 E26. 4 Indicate or Display: Outdoor Unit : E.5 U.1 INDOOR UNIT Error Method: Indoor Unit : Operation LED 2 times Flash, Timer LED 6 Times Flash, Address Duplication in Wired remote Filter LED Continuous Flash. contorller system Error Code : 2 6 Detective Actuators:...
  • Page 97 Indicate or Display: Trouble shooting 12 E26. 5 Outdoor Unit : E.5 U.1 INDOOR UNIT Error Method: Indoor Unit : Operation LED 2 times Flash, Timer LED 6 Times Flash, Address setting Error in Wired remote Filter LED Continuous Flash. contorller system Error Code : 2 6...
  • Page 98 Indicate or Display: Trouble shooting 13 E28. 1 Outdoor Unit : E. 28. 1 OUTDOOR UNIT Error Method: Indoor Unit : No Display Auto Address Setting Error Error Code : No Display * Service tool does not indicate the Error code <<...
  • Page 99 Indicate or Display: Trouble shooting 14 E28. 4 Outdoor Unit : E. 2 8. 4 OUTDOOR UNIT Error Method: Indoor Unit : No Display Signal Amplifier Auto Address Error Error Code : No Display *Service tool does not indicate the Error Detective details: Detective Actuators: Outdoor unit Main PCB...
  • Page 100 Indicate or Display: Trouble shooting 15 E29. 1 Outdoor Unit : E.5 U.1 INDOOR UNIT Error Method: Indoor Unit : Operation LED 2 times Flash, Timer LED 9 Times Flash, Connection unit number error (Indoor Filter LED Continuous Flash. unit in Wired remote controller system) Error Code : 2 9 Detective Actuators:...
  • Page 101 Indicate or Display: Trouble shooting 16 E29. 2 Outdoor Unit : No Display INDOOR UNIT Error Method: Indoor Unit : No Display Connection unit number error (Remote controller) Error Code : 2 9 Detective Actuators: Detective details: When the number of connecting remote controller are out of specified rule. Wired remote controller ( 2-Wire ) Forecast of Cause : 1.
  • Page 102 Indicate or Display: Trouble shooting 17 E31. 3 Outdoor Unit : E.5 U.1 INDOOR UNIT Error Method: Indoor Unit : Operation LED 3 times Flash, Timer LED 1 Times Flash, Indoor unit Power Frequency Filter LED Continuous Flash. Abnormal Error Code : 3 1 Detective Actuators: Detective details:...
  • Page 103 Trouble shooting 18 E32. 1 Indicate or Display: INDOOR UNIT Error Method: Outdoor Unit : E.5 U.1 Indoor Unit : Operation LED 3 times Flash, Timer LED 2 Times Flash, Indoor unit PCB Model Information Filter LED Continuous Flash. Error Error Code : 3 2 Detective Actuators:...
  • Page 104 Indicate or Display: Trouble shooting 19 E32. 3 INDOOR UNIT Error Method: Outdoor Unit : E.5 U.1 Indoor Unit : Operation LED 3 times Flash, Timer LED 2 Times Flash, Indoor unit EEPROM Access Error Filter LED Continuous Flash. Error Code : 3 2 Detective details: Detective Actuators:...
  • Page 105 Indicate or Display: Trouble shooting 19-1 E32. 7 INDOOR UNIT Error Method: Outdoor Unit : E.5 U.1 Indoor Unit : Operation LED 3 times Flash, Timer LED 2 Times Flash, Indoor unit microcomputer Filter LED Continuous Flash. self-check error Error Code : 3 2 Detective details: Detective Actuators:...
  • Page 106 Trouble shooting 20 E3A. 1 Indicate or Display: Outdoor Unit : E.5 U.1 INDOOR UNIT Error Method: Indoor Unit : Operation LED 3 times Flash, Timer LED 10 Times Flash, Indoor unit communication circuit (WRC) Filter LED Continuous Flash. microcomputers communication Error Error Code : 3 A Detective Actuators:...
  • Page 107 Indicate or Display: Trouble shooting 21 E41. 1 Outdoor Unit : E.5 U.1 INDOOR UNIT Error Method: Indoor Unit : Operation LED 4 times Flash, Timer LED 1 Times Flash, Filter LED Continuous Flash. Inlet air temp. Sensor Error Error Code : 4 1 Detective details: When Inlet air temp.
  • Page 108 Indicate or Display: Trouble shooting 22 E42. 1 Outdoor Unit : E.5 U.1 INDOOR UNIT Error Method: Indoor Unit : Operation LED 4 times Flash, Timer LED 2 Times Flash, Indoor unit Heat Ex. inlet temp. Filter LED Continuous Flash. sensor Error Error Code : 4 2...
  • Page 109 Indicate or Display: Trouble shooting 23 E42. 3 Outdoor Unit : E.5 U.1 INDOOR UNIT Error Method: Indoor Unit : Operation LED 4 times Flash, Timer LED 2 Times Flash, Indoor unit Heat Ex. outlet temp. Filter LED Continuous Flash. Sensor Error Error Code : 4 2...
  • Page 110 Trouble shooting 24 E51. 2 Indicate or Display: INDOOR UNIT Error Method: Outdoor Unit : E.5 U.1 Indoor Unit : Operation LED 5 times Flash, Timer LED 1 Times Flash, Indoor Unit Fan Motor 1 rotation Filter LED Continuous Flash. speed Error Error Code : 5 1...
  • Page 111 Indicate or Display: Trouble shooting 25 E52. 1 Outdoor Unit : E.5U.1 INDOOR UNIT Error Method: Indoor Unit : Operation LED 5 times Flash, Timer LED 2 Times Flash, Coil 1 (Expansion valve ) Error Filter LED Continuous Flash. Error Code : 5 2 Detective Actuators: Detective details:...
  • Page 112 Indicate or Display: Trouble shooting 26 E53. 1 Outdoor Unit : E.5 U.1 INDOOR UNIT Error Method: Indoor Unit : Operation LED 5 times Flash, Timer LED 3 Times Flash, Indoor unit Drain pump Error Filter LED Continuous Flash. Error Code : 5 3 Detective Actuators: Detective details:...
  • Page 113 Indicate or Display: Trouble shooting 27 E61. 2 Outdoor Unit : E. 6 1. 2 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Outdoor Unit under voltage Error Filter LED Continuous Flash. Error Code : 9 U / 6 1 Detective Actuators:...
  • Page 114 Indicate or Display: Trouble shooting 27-1 E61. 5 Outdoor Unit : E. 6 1. 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 : 9 U / 6 1...
  • Page 115 Indicate or Display: Trouble shooting 28 E62. 3 Outdoor Unit : E. 6 2. 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 : 9 U / 6 2 Detective Actuators:...
  • Page 116 Indicate or Display: Trouble shooting 29 E62. 6 Outdoor Unit : E. 6 2. 6 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Inverters Communication Error Filter LED Continuous Flash. Error Code : 9 U / 6 2 Detective Actuators: Detective details:...
  • Page 117 Indicate or Display: Trouble shooting 30 E62. 8 Outdoor Unit : E. 6 2. 8 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, EEPROM data corrupted error Filter LED Continuous Flash. Error Code : 9 U / 6 2 Detective Actuators:...
  • Page 118 Indicate or Display: Trouble shooting 30-1 E62. 9 Outdoor Unit : E. 6 2. 9 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Outdoor unit microcomputer Filter LED Continuous Flash. self-check error Error Code : 9 U / 6 2 Detective Actuators:...
  • Page 119 Indicate or Display: Trouble shooting 31 E63. 1 Outdoor Unit : E. 6 3. 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 : 9 U / 6 3 Detective Actuators: Detective details:...
  • Page 120 Indicate or Display: Trouble shooting 32 E67. 2 OUTDOOR UNIT Error Method: Outdoor Unit : E. 6 7. 2 Inverter PCB short interruption Indoor Unit : No Display Error Error Code : No display Detective Actuators: Detective details: Inverter PCB ''Short interruption"...
  • Page 121 Indicate or Display: Trouble shooting 33 E68. 2 Outdoor Unit : E. 6 8. 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 : 9 U / 6 8...
  • Page 122 Indicate or Display: Trouble shooting 34 E69. 1 Outdoor Unit : E. 6 9. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Outdoor Unit Transmission PCB Filter LED Continuous Flash. / Operation LED 1 time Flash, Parallel Communication Error Timer LED 4 Times Flash, Filter LED Continuous Flash.
  • Page 123 Indicate or Display: Trouble shooting 35 E71. 1 Outdoor Unit : E. 7 1. 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 : 9 U / 7 1 Detective Actuators:...
  • Page 124 Indicate or Display: Trouble shooting 36 E72. 1 Outdoor Unit : E. 7 2. 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 : 9 U / 7 2 Detective Actuators:...
  • Page 125 Indicate or Display: Trouble shooting 37 E73.4 Outdoor Unit : E. 7 3. 4 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Heat Ex.1 Gas Temp Sensor Error Filter LED Continuous Flash. Error Code : 9 U / 7 3 Detective details:...
  • Page 126 Indicate or Display: Trouble shooting 38 E 73. 5 Outdoor Unit : E. 7 3. 5 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Heat Ex.1 Liquid Temp Filter LED Continuous Flash. Sensor Error Error Code : 9 U / 7 3...
  • Page 127 Indicate or Display: Trouble shooting 39 E73. 6 Outdoor Unit : E. 7 3. 6 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Heat Ex.2 Gas Temp Sensor Error Filter LED Continuous Flash. Error Code : 9 U / 7 3 Detective details:...
  • Page 128 Indicate or Display: Trouble shooting 40 E73. 7 Outdoor Unit : E. 7 3. 7 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Heat Ex.2 Liquid Temp Filter LED Continuous Flash. Sensor Error Error Code : 9 U / 7 3...
  • Page 129 Indicate or Display: Trouble shooting 41 E74. 1 Outdoor Unit : E. 7 4. 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 : 9 U / 7 4 Detective Actuators:...
  • Page 130 Indicate or Display: Trouble shooting 42 E75. 1 Outdoor Unit : E. 7 5. 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 : 9 U / 7 5 Detective Actuators:...
  • Page 131 Indicate or Display: Trouble shooting 43 E77. 1 Outdoor Unit : E. 7 7. 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 : 9 U / 7 7 Detective Actuators:...
  • Page 132 Indicate or Display: Trouble shooting 44 E82. 2 Outdoor Unit : E. 8 2. 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 : 9 U / 8 2...
  • Page 133 Indicate or Display: Trouble shooting 45 E83. 1 Outdoor Unit : E. 8 3. 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 : 9 U / 8 3 Detective details:...
  • Page 134 Indicate or Display: Trouble shooting 46 E83. 2 Outdoor Unit : E. 8 3. 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 : 9 U / 8 3 Detective details:...
  • Page 135 Indicate or Display: Trouble shooting 47 E84. 1 Outdoor Unit : E. 8 4. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Current Sensor 1 abnormal Filter LED Continuous Flash. Error Code : 9 U / 8 4 Detective Actuators:...
  • Page 136 Indicate or Display: Trouble shooting 48 E86. 1 Outdoor Unit : E. 8 6. 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 : 9 U / 8 6 Detective Actuators:...
  • Page 137 Indicate or Display: Trouble shooting 49 E86. 3 Outdoor Unit : E. 8 6. 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 : 9 U / 8 6 Detective details:...
  • Page 138 Indicate or Display: Trouble shooting 50 E86. 4 Outdoor Unit : E. 8 6. 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 : 9 U / 8 6 Detective Actuators:...
  • Page 139 Indicate or Display: Trouble shooting 51 E93. 1 Outdoor Unit : E. 9 3. 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 : 9 U / 9 3 Detective details:...
  • Page 140 Indicate or Display: Trouble shooting 52 E94. 1 Outdoor Unit : E. 9 4. 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 : 9 U / 9 4 Detective Actuators: Detective details:...
  • Page 141 Indicate or Display: Trouble shooting 53 E95. 5 Outdoor Unit : E. 9 5. 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 : 9 U / 9 5...
  • Page 142 Indicate or Display: Trouble shooting 54 E97. 1 Outdoor Unit : E. 9 7. 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 : 9 U / 9 7 Detective details:...
  • Page 143 Indicate or Display: Trouble shooting 55 E97. 5 Outdoor Unit : E. 9 7. 5 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Outdoor Unit Fan Motor Temp. Filter LED Continuous Flash. Abnormal Error Code : 9 U / 9 7...
  • Page 144 Indicate or Display: Trouble shooting 56 E97. 9 Outdoor Unit : E. 9 7. 9 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Outdoor Unit Fan Motor Driver Filter LED Continuous Flash. Abnormal Error Code : 9 U / 9 7...
  • Page 145 Indicate or Display: Trouble shooting 57 E9A.1 Outdoor Unit : E. 9 A. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Coil 1 (EEV) Error Filter LED Continuous Flash. Error Code : 9 U / 9 A Detective details: Detective Actuators:...
  • Page 146 Indicate or Display: Trouble shooting 58 E9A.2 Outdoor Unit : E. 9 A. 2 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Coil 2 (EEV) Error Filter LED Continuous Flash. Error Code : 9 U / 9A Detective details: Detective Actuators:...
  • Page 147 Indicate or Display: Trouble shooting 59 E9A.3 Outdoor Unit : E. 9 A. 3 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Coil 3 (EEV) Error Filter LED Continuous Flash. Error Code : 9 U / 9 A Detective details: Detective Actuators:...
  • Page 148 Indicate or Display: Trouble shooting 60 E9U.2 OUTDOOR UNIT Error Method: Outdoor Unit : E. 9 U. 2 (Only for master outdoor unit) Indoor Unit : No display / Operation LED 9 times Flash, Timer LED 15 Slave Outdoor Unit Error timse Flash Filter LED Continuous Flash Error Code * Master Outdoor unit : 9 U.
  • Page 149 Indicate or Display: Trouble shooting 61 EA1. 1 Outdoor Unit : E. A 1. 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 : 9 U / A 1 Detective details:...
  • Page 150 Indicate or Display: Trouble shooting 62 EA3. 1 Outdoor Unit : E. A 3. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Compressor 1 Temperature Abnormal Filter LED Continuous Flash. Error Code : 9 U / A 3 Detective details:...
  • Page 151 Indicate or Display: Trouble shooting 63 EA4. 1 Outdoor Unit : E. A 4. 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 : 9 U / A 4 Detective details: Detective Actuators:...
  • Page 152 Indicate or Display: Trouble shooting 64 EA4. 2 Outdoor Unit : E. A 4. 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 : 9U / A 4 Detective details:...
  • Page 153 Indicate or Display: Trouble shooting 65 EA5. 1 Outdoor Unit : E. A 5. 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 : 9 U / A 6 Detective details: Detective Actuators:...
  • Page 154 Indicate or Display: Trouble shooting 66 EA6. 3 Outdoor Unit : E. A 6. 3 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Heat Ex.1 gas temp. Error Filter LED Continuous Flash. Error Code : 9 U / A 6 Detective details:...
  • Page 155 Indicate or Display: Trouble shooting 67 EA6. 4 Outdoor Unit : E. A 6. 4 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Heat Ex.2 gas temp. Error Filter LED Continuous Flash. Error Code : 9 U / A 6 Detective details:...
  • Page 156 Indicate or Display: Trouble shooting 68 EAC. 4 Outdoor Unit : E. A C. 4 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash, Outdoor unit Heat Sink Tempreture Filter LED Continuous Flash. Abnormal Error Code : 9 U / A C...
  • Page 157 Indicate or Display: Trouble shooting 71 Outdoor Unit : - - - - OUTDOOR UNIT Error Method: Indoor Unit : No Display Initial Setting Error Error Code : No Display * Service tool does not indicate the Error code Detective details: Detective Actuators: When no communication data can be received from the Inverter PCB at the time of power ON.
  • Page 158: Trouble Shooting No Error Code

    4-2-10 TROUBLE SHOOTING NO ERROR CODE Trouble shooting 72 Forecast of Cause : 1. Power Supply failure 2. Outside cause 3. Electrical Component defective Indoor Unit - No Power (Except wall mounted type) Check Point 1 : Power supply Is not the breaker down? Instant drop ----- Check if there is a large load electric apparatus in the same circuit.
  • Page 159 Trouble shooting 73 Forecast of Cause : 1. Power Supply failure 2. Outside cause 3. Electrical Component defective Indoor Unit - No Power (Wall mounted type) Check Point 1 : Power supply Is not the breaker down? 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.
  • Page 160 Trouble shooting 74 Forecast of Cause : 1. Power Supply failure 2.Outside cause 3.Electrical Components defective Outdoor Unit - No Power 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 Design ta &...
  • Page 161 Trouble shooting 76 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 162 Forecast of Cause : Trouble shooting 77 1. Indoor Unit error 2. Outdoor Unit error No Cooling / No Heating 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 163 Forecast of Cause : Trouble shooting 78 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)
  • Page 164 Forecast of Cause : Trouble shooting 79 1. Erroneous installation 2. Drain hose failure 3. Float Switch failure Water Leaking Diagnosis method when water leak occurs Diagnosis method when water is spitting out Is Main Unit installed in stable condition? Is the filter clogged? Is Main Unit broken or deformed at the time of transportation or maintenance?
  • Page 165 Forecast of Cause : Trouble shooting 80 1. Power Supply failure 2. Outside cause Outdoor air unit- No Power 3. Electrical Component defective Check Point 1 : Power supply Is not the breaker down? 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.
  • Page 166 E39. 1 Indicate or Display: Trouble shooting 81 (E39. 2) Outdoor Unit :E.5 U.1 INDOOR UNITError Method: Error Code :39, 39.1(2) Indoor Unit power supply error for FAN motor 1 (2) Detective Actuators: Detective details: When the DC power input for Fan motor < W500 - W501 (W530 - W531) on Indoor Unit Controller PCB Circuit the Power supply PCB >...
  • Page 167 Trouble shooting 82 E 4A.1 Indicate or Display: INDOOR UNIT Error Method: Outdoor Unit : E.5 U.1 Error Code : 4 A, 4 A. 1 Indoor unit suction air temp. thermistor error Detective Actuators: Detective details: Indoor Unit Controller PCB Circuit When Indoor unit suction air temp.
  • Page 168 Trouble shooting 83 E 4A.2 Indicate or Display: INDOOR UNIT Error Method: Outdoor Unit : E.5 U.1 Error Code : 4 A, 4 A. 2 Indoor unit discharge air temp. thermistor error Detective Actuators: Detective details: Indoor Unit Controller PCB Circuit When Indoor unit discharge air temp.
  • Page 169 Trouble shooting 84 E59. 2 Indicate or Display: INDOOR UNIT Error Method: Outdoor Unit : E.5 U.1 Indoor Unit Fan Motor 2 rotation Error Code : 5 9, 5 9. 2 speed Error Detective details: Detective Actuators: When the FAN motor feed back rotation value which is detecting on the Indoor Unit Controller PCB Circuit controller PCB becomes 0 and lasts for more than 1 minute Indoor Fan Motor 2...
  • Page 170 Indicate or Display: Trouble shooting 85 E52. 2 Outdoor Unit : E.5U.1 INDOOR UNIT Error Method: Indoor Unit : Operation LED 5 times Flash, Timer LED 2 Times Flash, Coil 2 (Expansion valve ) Error Filter LED Continuous Flash. Error Code : 5 2 Detective Actuators: Detective details:...
  • Page 171 Indicate or Display: Trouble shooting 86 EJ6. 1 Outdoor Unit : E. 5U. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 13 times Flash, Timer LED 6 times Flash, Compressor Motor Loss of Filter LED Continuous Flash. Synchronization Error Code : J 6 Detective details:...
  • Page 172 Trouble shooting 87 Forecast of Cause : 1. Power supply failure 2. Trouble on peripheral device Peripheral device doesn’t operate 3. DX-Kit Electrical compornent defective 4. Field setting mismatch General check procedure 1. Check Error code on the VRF system. (Remote controller, Service tool, etc) 2.
  • Page 173 Trouble shooting 88 Forecast of Cause : 1. Power supply failure 2. Trouble on peripheral device Peripheral device FAN not operate 3. DX-Kit Electrical compornent defective 4. Field setting mismatch General check procedure 1. Check Error code on the VRF system. (Remote controller, Service tool, etc) 2.
  • Page 174 Trouble shooting 89 Forecast of Cause : 1. Temperature controlling 2. EEV controlling 3. External Factor Peripheral device No Cooling/ Heating General check procedure 1. Check Error code on the VRF system. (Remote controller, Service tool, etc) 2. Check LED brinks on the controler PCB of DX-KIT 3.
  • Page 175 Trouble shooting 90 Forecast of Cause : DX-KIT Controller No Power 1. Power supply failure (LED on the Main PCB is OFF) 2. DX-Kit Electrical compornent defective Check Point 1 : Power supply Is not the breaker down? 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.
  • Page 176: Service Information Network Communication Abnormal

    4-3 SERVICE INFORMATION SERVICE INFORMATION Network communication Abnormal - Basic trouble shooting procedure - 1. Check Error code in one network segment separately, and check the Error code of (OU, IU, RC, ST) < If the system has more than 2 Net work segments, disconnect the other Network segment.> 2.
  • Page 177: 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 178 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. (Make sure the pressure equalization has been finished) 2.
  • Page 179: 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 EEV2 : Expansion valve #2 TH2 : Outdoor temperature sensor detection value...
  • Page 180 <How to respond, when refrigerant is deficient> Reuse the refrigerant of the broken master unit. Broken Substitutional Slave master unit master unit unit #1 Open and adjust High pressure (service port) All 3 Way-Valves Close Liquid Connect the high pressure service port of the broken master unit and the low pressure pipe of the broken master unit by pressure gauge.
  • Page 181: 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 Is any Indoor unit in operation? Check power supply voltage, Check power supply voltage,open fuse.
  • Page 182 SERVICE PARTS INFORMATION 2 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 (BLACK) (WHITE) (RED) WHITE BLACK Check Point 2 : Check Winding Resistance Check winding resistance of each terminal If the resistance value is 0 or infinite, replace Compressor.
  • Page 183 SERVICE PARTS INFORMATION 3 Main PCB Filter PCB (Main) Check Filter PCB (Main) -1 Is Fuse (5A/ 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 184 SERVICE PARTS INFORMATION 4 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 (60A/450V) open? Check Filter PCB (INV) -2 Replace Filter PCB (INV) PCB pattern and parts on PCB defective? Check Filter PCB (INV) -3...
  • Page 185 SERVICE PARTS INFORMATION 5 Fan Driver PCB Check Fan motor Replace Fan motor Outdoor unit fan motor defective? Check Fuse of DC Fan motor (5A Fuse) Replace FUSE Blown Fuse ? Check Fan driver PCB -1 Replace Fan driver PCB PCB pattern and parts on PCB defective? Check Fan Driver PCB -2 Replace Fan driver PCB...
  • Page 186 SERVICE PARTS INFORMATION 6 Filter PCB(INV) Check Point 1 Measure the resistance of Filter PCB(INV) by following procedure. 1. Turn OFF the Outdoor unit(s) power supply 2. Disconnect the connection wires between the Filter PCB(INV) - Inverter PCB. 3. Measure the resistance value Good : 300 Ohm + 20% (240 ~ 360 Ohm) Filter PCB(INV) [K11CE-1100HUE-FL0] CN522 (Pin 1-3)
  • Page 187 SERVICE PARTS INFORMATION 7 (Mounted on Inverter PCB) Check Point 1 Disconnect the connection wires between the Inverter PCB - electrolytic capacitor and Inverter PCB - Inverter Compressor. Inverter PCB Set the tester to the "Resistance" mode, and measure the resistance between the following terminals. Red wire (P) - screw terminals U / V / W White wire (N) - screw terminals U / V / W...
  • Page 188 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 "Diode"...
  • Page 189 SERVICE PARTS INFORMATION 9 Reactor 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 190 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 191 SERVICE PARTS INFORMATION 11 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 192 SERVICE PARTS INFORMATION 13 Indoor Unit Electronic Expansion Valve (EEV) Check Point 2 : Check Coil of EEV Check Point 1 : Check Connections Remove connector, check each winding resistance of Coil. Check Connectors (Loose connector or open cable.) Duct, Cassette, Wall mount °...
  • Page 193 SERVICE PARTS INFORMATION 14 Outdoor Unit Electronic Expansion Valve (EEV1) Check Point 1 : Check Connections Check connection of connector (CN116) (Loose connector or open cable) CN116 CN117 CN160 Check Point 3 : Check Noise at start up Check Point 2 : Check Coil of EEV1 Turn on Power and check operation noise.
  • Page 194 SERVICE PARTS INFORMATION 15 Outdoor Unit Electronic Expansion Valve (EEV2) Check Point 1 : Check Connections Check connection of connector (CN117) (Loose connector or open cable) CN116 CN117 CN160 Check Point 3 : Check Noise at start up Check Point 2 : Check Coil of EEV2 Turn on Power and check operation noise.
  • Page 195 SERVICE PARTS INFORMATION 16 Outdoor Unit Electronic Expansion Valve (EEV3) Check Point 1 : Check Connections Check connection of connector (CN160) (Loose connector or open cable) CN116 CN117 CN160 Check Point 3 : Check Noise at start up Check Point 2 : Check Coil of EEV3 Turn on Power and check operation noise.
  • Page 196 SERVICE PARTS INFORMATION 17 Outdoor Unit Solenoid Valve (SV1, SV2, SV3) Check Point 2 : Check Solenoid Coil Check Point 1 : Check connections Remove connector and check if coil is open. Check connection of connector. (Loose connector or open cable) °...
  • Page 197 Check Point 4-2 : Check operation of SV3 Check the operation noise when the connector of SV3 is removed. - When SV3 is open The sound of operation noise is heard ---> Normal The sound of operation noise is not heard. ---> Replace SV3 - When SV3 is closed The sound of operation noise is heard --->...
  • Page 198 SERVICE PARTS INFORMATION 18 4-WAY VALVE 1 (2) (3) Check Point 1 : Check Circuit connection Check Point 2 : Check Solenoid Coil Check the connection of connector CN105 (CN156,158) Remove CN105 (CN156,158) from PCB and check the resistance value of coil BLUE 4WV1 Resistance Value...
  • Page 199 SERVICE PARTS INFORMATION 19 Indoor Unit AC Fan Motor Check Point : ARXC36GATH (High Static Pressure Duct Type) Check each winding resistance of the motor If Resistance value is abnormal, replace motor. Lead wire Resistance value BLUE (Low) White Red 13.4 VIOLET (Med) Thermal protector...
  • Page 200 SERVICE PARTS INFORMATION 20 Indoor unit fan motor < DC motor > When you approach this part, please cut off the power supply and wait for a while until DC voltage has been discharged. Check Point 1 : Check rotation of Fan Rotate the fan by hand when operation is off.
  • Page 201 SERVICE PARTS INFORMATION 22 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. Characteristics of pressure sensor PRESSURE WHITE SENSOR...
  • Page 202 SERVICE PARTS INFORMATION 23 Pressure Switch Type of contact Pressure Characteristics of pressure switch 4.2 0.1MPa (609 14.5 psi) Contact : Short Open Contact : Open Short (464 21.8 psi) 3.2 0.15MPa SERVICE PARTS INFORMATION 24 Thermistor Check Point : Check Thermistor resistance value Remove connector and check Thermistor resistance value.
  • Page 203: Appending Data

    5. APPENDING DATA (UNIT)
  • Page 204: Refrigerant Circuit

    5-1 REFRIGERANT CIRCUIT MODELS : AJ* 072/ 090/ 108/ 126/ 144/ 162LALBH AJ* 072/ 090/ 108/ 126/ 144/ 162LATBH Outdoor unit 4WV 1 HEX1 EEV1 EEV3 TH10 EEV2 4WV 2 HEX2 FAN1 SCHEX HPSW1 4WV 3 (INV) TH11 Indoor unit1 TH21 FAN21 TH24...
  • Page 205: Indoor Unit

    SYMBOL DESCRIPTION SYMBOL DESCRIPTION Outdoor unit MARK DESCRIPTION CMP1 Compressor 1 (Inverter type) HEX1 Heat exchanger 1 HEX2 Heat exchanger 2 FAN1 Fan 1 Accumulator Oil separator SCHEX Sub-cool heat exchanger High pressure sensor Low pressure sensor HPSW1 High pressure sensor switch 1 4WV1 4-way valve 1 4WV2...
  • Page 206 5-2 WIRING DIAGRAM 5-2-1 Indoor Unit COMPACT CASSETTE TYPE MODELS : AUXB04GALH, AUXB07GA* H, AUXB09GA* H, AUXB12GA* H, AUXB14GA* H, AUXB18GA* H, AUXB24GA* H 05 - 03...
  • Page 207 CASSETTE TYPE MODELS : AUXD18GA* H, AUXD24GA* H, AUXA18GALH, AUXA24GALH, AUXA30GA* H, AUXA36GA* H, AUXA45GA* H, AUXA54GA* H 05 - 04...
  • Page 208 LOW STATIC PRESSURE DUCT/ CONCEALED FLOOR TYPE MODEL : ARXB07GALH, ARXB09GALH, ARXB12GALH ARXB14GALH, ARXB18GALH 05 - 05...
  • Page 209 SLIM DUCT / SLIM CONCEALED FLOOR TYPE MODELS : ARXD04GALH, ARXD07GA* H, ARXD09GA* H, ARXD12GA* H, ARXD14GA* H, ARXD18GA* H, ARXD24GA* H 05 - 06...
  • Page 210 LOW STATIC PRESSURE DUCT TYPE MODEL : ARXB24GALH, ARXB30GALH, ARXB36GALH MODEL : ARXB45GALH 05 - 07...
  • Page 211 MEDIUM STATIC PRESSURE DUCT TYPE MODELS : ARXA24GALH, ARXA30GALH, ARXA36GALH, ARXA45GALH MODELS : ARXA24GB* H, ARXA30GB* H, ARXA36GB* H, ARXA45GB* H 05 - 08...
  • Page 212 HIGH STATIC PRESSURE DUCT TYPE MODELS : ARXC36GATH, ARXC45GATH, ARXC60GATH, MODELS : ARXC72GATH, ARXC90GATH 05 - 09...
  • Page 213 MODEL : ARXC36GBTH MODELS : ARXC72GBTH, ARXC90GBTH 05 - 10...
  • Page 214 FLOOR / CEILING TYPE MODELS : AB* A12GATH, AB* A14GATH, AB* A18GATH, AB* A24GATH 05 - 11...
  • Page 215: Ceiling Type

    CEILING TYPE MODELS : AB* A30GATH, AB* A36GATH, AB* A45GATH, AB* A54GATH 05 - 12...
  • Page 216 WALL MOUNTED TYPE (EEV external model) MODELS : AS* E04GACH, AS* E07GACH, AS* E09GACH, AS* E12GACH, AS* E14GACH 05 - 13...
  • Page 217 WALL MOUNTED TYPE MODELS : AS* A04GACH, AS* A07GA* H, AS* A09GA* H, AS* A12GA* H, AS* A14GA* H 05 - 14...
  • Page 218 MODELS : AS* A18GA* H, AS* A24GA* H, AS* A30GA* H 05 - 15...
  • Page 219 OUTDOOR AIR UNIT MODEL : ARXH054GTAH MODEL : ARXH072GTAH 05 - 16...
  • Page 220 MODEL : ARXH096GTAH 05 - 17...
  • Page 221: Outdoor Unit

    5-2-2 Outdoor Unit MODELS : AJ* 072LALBH, AJ* 090LALBH AJ* 072LATBH, AJ* 090LATBH 05 - 18...
  • Page 222 MODELS : AJ* 108LALBH, AJ* 126LALBH, AJ* 144LALBH, AJ* 162LALBH AJ* 108LATBH, AJ* 126LATBH, AJ* 144LATBH, AJ* 162LATBH 05 - 19...
  • Page 223: Saturation Table (R410A)

    5-3 SATURATION TABLE (R410A) 5-3-1 Saturation temperature and saturation pressure tables (°C / Mpa) (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 1.275...
  • Page 224: Temperature And Pressure Of Refrigerant (Graph)

    5-3-3 Temperature and pressure of refrigerant (Graph) (4.5) (4.0) (3.5) (3.0) (2.5) (2.0) (1.5) (1.0) (0.5) (-30) (-20) (-10) ( 0 ) (10) (20) (30) (40) (50) (60) Saturated liquid temperature °F (°C) 05 - 21...
  • Page 225: Disassembly Process

    6. DISASSEMBLY PROCESS...
  • Page 227 6. DISASSEMBLY / ASSEMBLY PROCESS 6.1 Indoor Unit CAUTION Before servicing the unit, turn the power supply switch OFF, When you approach PWB, be sure to equip with the electrostatic removal band. (PWB may be broken by static electricity.) 1. Indoor unit Transmisson PCB removal 1.
  • Page 228 6.2 Outdoor Unit WARNING Before servicing the unit, turn the power supply switch OFF, Then, do not touch electric parts for 10 minutes due to the risk of electric shock. 1. Appearance Model : AJY072/ 090LALBH 2. PANEL TOP removal Hook (3 places) screws Remove the 4 mounting screws.
  • Page 229: Reference Data

    4. Layout plan in CONTROL BOX Magnetic Relay Reactor Resistor, cement Diode Bridge (Rush current protection) (Discharge from capacitor) Fan driver PCB Filter PCB (3 phase) Resistor, cement (Rush current protection) Inverter PCB Filter PCB (1 phase) Terminal Main PCB Communication PCB Capacitor [Reference Data]...
  • Page 230 5. Screw tightening torque 2.4 +0.1N m 2.5 +0.2N m 1.6 ~2.0N m DANGER 5.0 ~7.0N m There is danger to which a fire and the capacitor explosion break out in the market if it does not assemble it with a regulated torque. 0.5 ~0.6N m 2.4 +0.1N m [Reference Data]...
  • Page 231 6. Main PCB removal Spacers (7 places) Main PCB Earth screw Remove the connectors and earth screw. Remove the spacers. CAUTION The model name is written in Main PCB of the outdoor unit and indoor unit, and when the factory of the product is shipped, it is written. However ,the model name is not written in the Main PCB supplied for the repair.
  • Page 232 7. Inverter PCB removal AJ*072/ 090LALBH, AJ*072/ 090LATBH Screws Screws (For INV comp.) (For capacitor) Remove the 3 mounting screws Remove the 2 mounting screws and codes. and codes. Inverter PCB Screws Screws (For IPM) (For Magnetic relay) Spacers (5 places) Remove the 2 mounting screws.
  • Page 233 AJ*108/ 126/ 144/ 162LALBH, AJ*108/ 126/ 144/ 162LATBH Screws Screws (For CT PCB) (For Capacitor) Remove the 5 mounting screws and codes. Inverter PCB Screws Screws (For IPM) (For Magnetic relay) Spacers (4 places) Remove the 2 mounting screws. Remove the mounting screw and code.
  • Page 234 8. Fan driver PCB removal Spacers Screws Spacers Fan driver PCB (For IPM) Remove the connectors. Remove the 2 mounting screws and the spacers. Note the tightening torque at the installation. Tightening torque is as follows. - Temporary tightening : 0.3 +0.1N m - Final tightening : 1.3 +0.1N m Heat sink M (AJY072/ 090)
  • Page 235 9. PANEL BTM removal Screws (7 places) Hook (3 places) Remove the 7 mounting screws. Remove the PANEL BTM by sliding toward. 10. Control Box open Screws (2 places) Loose or remove the cable ties. Remove the locking stopper (3 places) of edging saddle.(3 places) Remove the 2 mounting screws.
  • Page 236 11. THERMISTORS removal Thermo spring Cut the cable tie. Remove the heat insulation. Remove the thermo spring and thermistor. 12. SOLENOID COILS (4way valve and Solenoid valves) removal Remove the mounting screw. Remove the SOLENOID COIL. 13. EEV COILS removal Remove the EEV coil by hand.
  • Page 237 15. Fan motor removal Remove the Fan Guard. Remove the nut. Note the tightening torque at the installation. Tightening torque is from 15 to 20N m. Remove the Propeller fan. Cut the cable tie. Remove the 4 mounting screws. Remove the Fan motor. Note at the installation.
  • Page 238: Compressor Removal

    17. Compressor removal Precautions for exchange of Compressor. Do not allow moisture or debris to get inside refrigerant pipes during work. Procedure for compressor removal. (1) Turn off power. (2) Remove the Panel top and Panel btm. (3) Remove the Control Box. (4) Fully close the 3-way valve (Gas) and (Liquid).
  • Page 239 Comp.cover Comp. cover (Top) (Body) Color: White& Color: White Comp. cover Green (Accumulator) Color: white Comp. cover (Outside) Color: Green Remove the Compressor cover (Top). Remove the Compressor cover (Outside), Compressor cover (Accumulator), and Note : Compressor cover (Top) consists of 2 parts. Compressor cover (Body).
  • Page 240 Range Range Cut the Discharge pipe in this range. Cut the Suction pipe in this range. Remove the Compressor. Caution Keep their shape better. There is a possibility of catching fire to oil when removing by the welding without cutting it. Procedure for compressor installation.
  • Page 241 3-3-17,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.