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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...
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.................
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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..................
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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 -............
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.
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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.
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 &...
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...
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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 &...
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 ,...
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.).
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...
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...
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...
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)
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 " "...
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>...
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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"...
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.
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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...
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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...
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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...
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...
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.
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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.
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...
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.
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.
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)
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:...
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...
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 "...
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.
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"...
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< 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...
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...
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.
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...
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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.
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...
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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.
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.
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...
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...
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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.
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...
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(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...
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.
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.
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 •...
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.
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"...
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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.
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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.
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...
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...
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.
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 "...
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...
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.
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...
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 •...
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...
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 "...
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 .
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.
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...
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...
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.
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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.
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.
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...
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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...
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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:...
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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...
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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.
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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.
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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.
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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...
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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)
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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...
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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:...
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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...
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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 <<...
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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...
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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:...
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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.
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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:...
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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:...
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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:...
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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:...
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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:...
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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.
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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...
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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...
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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...
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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:...
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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:...
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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:...
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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...
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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:...
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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:...
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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:...
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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:...
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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:...
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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"...
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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...
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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.
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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:...
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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:...
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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:...
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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...
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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:...
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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...
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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:...
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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:...
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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:...
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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...
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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:...
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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:...
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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:...
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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:...
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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:...
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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:...
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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:...
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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:...
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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...
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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:...
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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...
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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...
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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:...
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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:...
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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:...
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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.
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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:...
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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:...
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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:...
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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:...
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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:...
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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:...
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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:...
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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...
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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.
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.
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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.
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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 &...
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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.
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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?
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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)
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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?
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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.
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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 >...
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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.
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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.
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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...
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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:...
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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:...
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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.
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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.
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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.
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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.
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.
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.
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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.
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...
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<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.
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.
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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.
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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.
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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...
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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...
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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)
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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...
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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"...
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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).
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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:...
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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?
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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 °...
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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.
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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.
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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.
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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) °...
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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 --->...
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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...
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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...
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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.
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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...
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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.
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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.
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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.
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]...
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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]...
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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.
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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.
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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.
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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)
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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.
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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.
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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.
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).
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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).
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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.