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Argo MILO PLUS Service Manual

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PORTABLE AIR CONDITIONER (LOCAL)
MILO PLUS
SERVICE MANUAL
Read the instructions carefully before operating the appliance or carrying out maintenance work. Observe
all the safety instructions; failure to observe the instructions may lead to accidents and/or damage. Store
these instructions in a safe place for future reference.

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Summary of Contents for Argo MILO PLUS

  • Page 1 PORTABLE AIR CONDITIONER (LOCAL) MILO PLUS SERVICE MANUAL Read the instructions carefully before operating the appliance or carrying out maintenance work. Observe all the safety instructions; failure to observe the instructions may lead to accidents and/or damage. Store these instructions in a safe place for future reference.

  • Page 2: Table Of Contents

    Service Manual Table of Contents ............. 12 Part I : Technical Information ....................12 1. Summary 2. Specifications ..................13 ............15 3. Outline Dimension Diagram ............16 4. Refrigerant System Diagram ..................17 5. Electrical Part 5.1 Wiring Diagram ..................17 5.2 PCB Printed Diagram ................
  • Page 3 Service Manual Abbreviations Used Within this Manual: Abbreviation Clear Words OFDN Oxygen free and dry nitrogen Personnel protective equipment Lower flammability level Upper flammability level Hydrocarbon INTRODUCTION ATTENTION Please read this manual carefully before installing and operating the Argoclima Hydrocarbon Air– Conditioner unit. Careless installation and operation could cause severe injuries to operators, workers and damage to the air-conditioner unit itself.
  • Page 4 Service Manual Notices General Safety Instructions Please pay careful attention to these safety instructions, to avoid risks to people and property. Before starting work on maintenance read this manual thoroughly and pay particular attention to the relevant chapters. Regardless of further requirements of the country, in which the equipment will be installed: assembly, first start up, technical service, maintenance and repair and as well as dismantling and disposal have to be carried out by authorised personnel only.
  • Page 5 Service Manual ONLY original Working on components with safety-relevant functions jeopardise the safe operation of Argoclima (OEM) the installation. In case it is necessary to replace components, only use approved parts from spare-parts are Argoclima, the Original Equipment Manufacturer (OEM) or Argoclima released or authorised permitted for components.
  • Page 6 Service Manual Basics in RAC Knowledge of the basic SI standard units for temperature, pressure, mass, density, energy. Understanding of the basic theory of refrigeration systems including the functions of the main components in the system (compressor, evaporator, condenser, thermostatic expansion valves). Understanding how to read a refrigerant flow chart and an electrical circuit diagram.
  • Page 7 Service Manual HC R290 Refrigerant Lssues Please notice that the unit is filled with propane. Details to this refrigerant are found in chapter “refrigerant”. Propane is highly flammable and leads to explosion under certain conditions. Inappropriate treatment of the unit involves the risk of severe damages of people and material.
  • Page 8 Service Manual Flammability Three components are needed simultaneously for causing fire: 1. Oxygen 2. Ignition source 3. The flammable concentration of HC For ignition, the concentration of HC in air has to be between the lower and upper flammable limits. If the concentration is below the lower flammability limit (LFL) of about 2% by volume in air, there is not enough HC for combustion.
  • Page 9 Service Manual First Aid Measures Inhalation: Remove the affected person to fresh air. If breathing has stopped, administer artificial respiration. Give external cardiac massage if necessary. If the person is breathing but unconscious, place them in the recovery position. Obtain medical assistance immediately.
  • Page 10 Service Manual DO NOT USE WATER JET Special protective equipment for fire fighters: In confined spaces use self-contained breathing apparatus Hazardous combustion products: Incomplete combustion may form carbon monoxide. Accidental Release Measures Immediate emergency action: Further actions: · Clear people away from the area to a safe place ·...
  • Page 11 Service Manual The HC leak de- tector is indeed a Personal Protective Equipment (PPE) device! Sign plate to protect and mark the working area. Appropriate detectors, suitable for hydrocarbons, must be available and operational all the time. Appropriate tools and appliances must be available and ready for operation.
  • Page 12 Service Manual Pressure—Temperature Chart HC Refrigerant R-290 Temperature Absolute pressure Gauge pressure °C °F kPa(g) bar(g) PSI(g) 111,12 1,11 16,12 11,12 0,11 1,61 -38,2 116,00 1,16 16,83 16,00 0,16 2,32 -36,4 121,05 1,21 17,56 21,05 0,21 3,05 -34,6 126,27 1,26 18,31 26,27 0,26...
  • Page 13 Service Manual HC Refrigerant R-290 Temperature Absolute pressure Gauge pressure 51,8 654,81 6,55 94,97 554,81 5,55 80,47 53,6 673,40 6,73 97,67 573,40 5,73 83,17 55,4 692,38 6,92 100,42 592,38 5,92 85,92 57,2 711,75 7,12 103,23 611,75 6,12 88,73 731,51 7,32 106,10 631,51 6,32...

  • Page 14: Part I : Technical Information

    Service Manual Part I : Technical Information 1. Summary Model Remote Controller Technical Information...

  • Page 15: Specifications

    Service Manual 2. Specifications Model MILO PLUS Product Code 39800016 Rated Voltage 220-240 Power Rated Frequency Supply Phases Cooling Capacity 3500 Heating Capacity 3500 Cooling Power Input 1345 Heating Power Input 1130 Cooling Power Current Heating Power Current Rated Input...
  • Page 16 Service Manual Compressor Manufacturer ZHUHAI LANDA COMPRESSOR CO., LTD./GREE Compressor Model QXD-B222A030 Compressor Oil 5GSD-TB or equivalent Compressor Type Rotary Compressor Compressor LRA. 26.00 Compressor RLA 4.50 Compressor Power Input 1000 Compressor Overload Protector HPA-030 Fan Type Centrifugal Fan Diameter Length(D×L) Φ204.6x72 Cooling Speed r/min...

  • Page 17: Outline Dimension Diagram

    Service Manual 3. Outline Dimension Diagram Unit:mm Technical Information...

  • Page 18: Refrigerant System Diagram

    Service Manual 4. Refrigerant System Diagram Cooling Only Model CENTRIFUGAL FAN CENTRIFUGAL FAN HOT DISCHARGED AIR COOLED AIR COMPRESSOR INDOOR COILS OUTDOOR COILS CAPILLARY REFRIGERANT FLOW DIRECTION Cooling & Heating Model 4-Way valve COOLED AIR CENTRIFUGAL FAN CENTRIFUGAL FAN HOT DISCHARGED AIR HOT AIR COOLED AIR COMPRESSOR...

  • Page 19: Electrical Part

    Service Manual 5. Electrical Part 5.1 Wiring Diagram ●Instruction Symbol Symbol Color Symbol Symbol Color Symbol Name White Green Jumper cap Yellow Brown COMP Compressor Blue Grounding wire YEGN Yellow/Green Black Violet Orange Note: Jumper cap is used to determine fan speed and the swing angle of horizontal lover for this model. Technical Information...
  • Page 20 Service Manual ●Electric Diagram VALVE OUTTUBE TEMP. WATER ROOM TEMP. TUBE TEMP. RECEIVER 4-WAY SENSOR SENSOR SENSOR MOTOR BOARD POWER BN(BK) BU(WH) YEGN(GN) 4WAY DC-M T-SENSOR OUTTUBE DISP2 DISP2 AC-L MAIN BOARD DISP1 K201 YEGN COMP. DISP1 COMP COMP R(M) SWING HIGH-WP OFAN...

  • Page 21: Pcb Printed Diagram

    Service Manual 5.2 PCB Printed Diagram (1)Silk screen on main board Name Name Neutral Wire Insertion 1 Outdoor Tube Temperature Sensor Needle Stand Neutral Wire Insertion 2 10 Temperature Sensor Needle Stand Water of Motor Insertion Swing Needle Stand Indoor fan Needle Stand 12 Display Board Needle Stand Four-way Valve Needle Stand 13 Remoter Needle Stand...
  • Page 22 Service Manual (2)Silk screen on display board TOP VIEW Interface of main board BOTTOM VIEW Technical Information...

  • Page 23: Function And Control

    Service Manual 6. Function and Control 6.1 Introduction of control panel Dual-8 nixie tube + / - button Cool mode indicator Swing indicator Wifi indicator Dry mode indicator Fan mode indicator Swing button Heat mode indicator Wifi button (Cool&Heat Unit only) Fan speed indicator Fan button ON/OFF button...

  • Page 24: Using The Remote Controller

    Service Manual Using the remote controller This is a general use remote controller, it could be used for the air conditioners with multifunction; For some function, which the model doesn't have, if press the corresponding button on the remote controller that the unit will keep the original running status. How to use the remote controller Point the remote control toward the signal receiver and press the desired button.

  • Page 25: Remote Controller Introduction (Wifi)

    Service Manual 6.2 Remote Controller Introduction (WiFi) On/Off button Mode button + / - button Swing button (This function is not applicable for this model. ) Fan button Sleep button Timer button Health button (This function is not applicable for this model. ) WiFi button Temp.
  • Page 26 Service Manual ON/OFF button Press this button to turn on the unit. Press this button again to turn off the unit. MODE button Press this button can your required operation mode in turn. Corresponding indicator will be on. Auto Cool Only Heat Auto: Under this mode, the unit will operate automatically according to ex-factory setting.
  • Page 27 Service Manual Health button (This function is not applicable for this model. ) Press this button to achieve the on and off of healthy and scavenging functions in LCD displays " ". Press the button for the second time to start healthy and scavenging functions simultaneously;...

  • Page 28: Introduction Of Basic Mode Function

    Service Manual 6.3 Introduction of Basic Mode Function 1. Temperature Parameter ◆ Indoor setting temperature (T preset ◆ Indoor ambient temperature (T amb. 2. Basic Functions of System After the unit is energized, the interval of start-up time for compressor is no less than 3min under any conditions; when the compressor is started, the unit is off without the temperature change in 6min.

  • Page 29: Protection Function

    Service Manual 3.4 Memory Function The system memories the setting running status of previous power-off, and runs automatically with the setting running status before it power-off when it is energized again. If the unit is on before power-off, the compressor will 3min delay protection when it is energized again.

  • Page 30: Part Ii: Installation And Maintenance

    Service Manual Part II: Installation and Maintenance conducting wire. 7. Notes Maintenance Safety 12. If the unit is to be installed in a humid place, the circuit breaker must be installed. Precautions Refrigerant Safety Precautions: Important! When refrigerant leaks or requires discharge during installation, maintenance, or disassembly, it should Please read the safety precautions carefully before be handled by certified professionals or otherwise in...
  • Page 31 Service Manual Appliance filled with flammable gas R290. Before install and use the appliance, read the owner’s manual first. Before install the appliance, read the installation manual first. Before repair the appliance, read the service manual first. The Refrigerant To realize the function of the air conditioner unit, a special refrigerant circulates in the system. The used refrigerant is the fluoride R290, which is specially cleaned.

  • Page 32: Installation Precaution

    Service Manual 8. Installation Precaution WARNING: ● Observe all governing codes and ordinances. ● Do not use damaged or non-standard power cord. ● Be caution during installation and maintenance. Prohibit incorrect operation to prevent electric shock, casualty and other accidents. 8.1 Selection of installation location Basic requirement Installing the unit in the following places may cause malfunction.

  • Page 33: Install

    Service Manual 9. Install Preparation before Installation check if the accessories are available before installation Note: Accessory list Joint A Heat discharge pipe Rear clip Screws Drain connector Power cord hooks T-ON T-OFF AUTO SWING COOL SLEEP OPER LOCK AUTO SPEED HEAT ON/OFF...

  • Page 34: Removing Collected Water

    Service Manual Removing Collected Water Use the continuous drainage option from the midd 2.Drain water from the middle drainage port. Install Power cord Hooks NOTICE:Water can be automatically emptied into a floor drain by Water can be automatically emptied into a floor dra ●...

  • Page 35: Operation Test

    improper hose installation may result in water filling up the chassis and causing the unit to shut off. Empty water in the chassis if shut off occurs, Service Manual then check portable location and hose for proper setup. Note of Installing heat discharge pipe Install heat discharge pipe Note of Installing heat discharge...
  • Page 36 Service Manual Preparation before Installation check if the accessories are available before installation Note: Accessory list Drain connector Joint A Heat discharge pipe Battery Screws (AAA 1.5V) Remote controller Power cord hooks User's manual Joint H Joint G Plastic Cover Joint F Optional 1 Drainage hose...
  • Page 37 Service Manual Removing Collected Water Use the continuous drainage option from the mid 2.Drain water from the middle drainage port. Install Power cord Hooks NOTICE:Water can be automatically emptied into a floor drain by Water can be automatically emptied into a floor d ●...
  • Page 38 improper hose installation may result in water filling up the chassis and causing the unit to shut off. Empty water in the chassis if shut off occurs, Service Manual then check portable location and hose for proper setup. ● Wrong installation is shown in following figure (If the pipe is bent too much,it would easily cause malfunction.) Installation of Heat Discharge Pipe Note of Installingheat discharge pipe...
  • Page 39 Service Manual Disassembly for installation in window Installation in immovable window 1.Remove joint A: Press the clasp and lift joint A upwards to remove it. 1. Rotate joint A into the ends of heat discharge pipe. Clasp Upwards Disassemble Joint A Joint A Heat discharge pipe 2.If the window is immovable, cut a hole to install joint F...
  • Page 40 Service Manual 3. When heat discharge pipe is removed, Install the plastic cover into joint F in case of the insect into the house . Plastic Cover Operation Test ● Put through the power supply and then press ON/OFF button on remote controller to start the unit.

  • Page 41: Maintenance

    Service Manual 10. Maintenance 10.1 Safety Principle of Maintenance 1. The maintenance spot must have good ventilation. Do not close the door or the window. 2. Do not use naked flame, including welding, smoking. Do not use power tools.Do not use mobile phone. Tell the user not to cook with naked flame.

  • Page 42: Maintenance Cautions

    Service Manual 10.3 Maintenance Cautions If it is necessary to replace components, all the components used shall be made by manufacturer. Otherwise, the supplier shall not bear the responsibility. 1.Maintenance of Electrical Parts (1)Replace the power cord and connecting wire with that of the same specification. (2)When inspecting the circuit with power on, check if there is electric leakage for the metal component such as evaporator or condenser.
  • Page 43 Service Manual (2).Replace main board Concentration Leakage test for the detector complete unit Leakage Remove panel Remove front case Remove the shielding box of electric box The qualified parts Replace main provided by board manufacturer Maintenance...

  • Page 44: Error Code

    Service Manual 10.4 Error Code Display NO. Malfunction Method of A/C Status Possible Causes Indoor Unit Name Error Code 1. The wiring terminal between indoor ambient temperature sensor and main board is loosened or poorly contacted. Indoor ambient Compressor and motor stop 2.
  • Page 45 Service Manual Display NO. Malfunction Method of A/C Status Possible Causes Indoor Unit Name Error Code 1. The environment is formidable. 2. Heat exchangers are too dirty or the air inlet/outlet is blocked. 3. Fan motor is not working Abnormal fan speed; fan speed is Overload Indoor and outdoor fan keeps on too low or the fan doesnt run.

  • Page 46: Malfunction Detection Flowchart

    Service Manual 10.5 Malfunction Detection Flowchart (1) Malfunction of temperature sensor F1, F2, F4 Troubleshooting for F1,F2,F4 malfunction the wiring terminal between the temperature sensor and the controller loosened or poorly contacted? Insert the temperature sensor tightly Is malfunction eliminated Is there short circuit due to trip - over of the parts? Make the parts upright...
  • Page 47 Service Manual (2) Bucket full protection H8 Start up the unit H8 is displayed Discharge water by referring Whether water tray is full to instruction manual Check whether wires for water-level Whether malfunction switch are connected tightly is eliminated? Adjust connection Whether malfunction Replace water-level is eliminated?
  • Page 48 Service Manual （5） (3) Malfunction of Overload protection for compressor H3 Troubleshooting for H3 malfunction Heat exchangers are Clean the heat exchangers and remove Malfunction is too dirty or the air inlet/outlet eliminated. blockage of air inlet/outlet. is blocked. Fan motor doesn't work Check motor and re-install the moto Malfunction is at a normal fan speed;...
  • Page 49 Service Manual (4) Overload malfunction E8 Troubleshooting for E8 malfunction Operate the unit after ambient tempeature and Whether the environment Malfunction is humidity is decreased or move the unit to the eliminated. is formidable. place with low abient temprature and humidity. Heat exchangers are Clean the heat exchangers and remove...
  • Page 50 Service Manual (5) Malfunction of Insufficient Refrigerant protection F0 Troubleshooting for F0 malfunction Check whether the refrigerant is leaking? Heat exchangers are Clean the heat exchangers and remove Malfunction is too dirty or the air inlet/outlet eliminated. blockage of air inlet/outlet. is blocked.

  • Page 51: Maintenance Method For Common Malfunction

    Service Manual 10.6 Maintenance Method for Common Malfunction 1. Air Conditioner Can't be Started Up Possible Causes for Malfunction Distinguish Method (A/C status) Maintenance Method No power supply; power plug Check whether theres power supply; hasnt been inserted tightly and Operation indicator is OFF and buzzer wont give Check power plug and wire connection.
  • Page 52 Service Manual 3. Fan Can't Swing Possible Causes Discriminating Method (Air conditioner Status) Troubleshooting Connect wires according to wiring diagram to Wrong wire connection, or poor Check the wiring status according to circuit make sure all wiring terminals are connected connection diagram firmly...

  • Page 53: Removal Procedure

    Service Manual Prohibit disassembling and maintaining the refrigeration system pipeline and parts 11. Removal Procedure (include evaporator, condenser, compressor, capillary, 4-way valve, etc.) Step Procedure Filter Sub-assy 2 1.Remove filter sub-assy Remove filter sub-assy 1 and filter sub- assy 2. Filter sub-assy 1 2.
  • Page 54 Service Manual Step Procedure 4.Remove panel Screws Screws Remove 4 screws on the panel and then take out the panel. Panel 5.Remove top cover Screws Top cover Remove 6 screws used for fixing the top cover and then take out the top cover.

  • Page 55: Appendix

    Service Manual Appendix: Appendix 1: Reference Sheet of Celsius and Fahrenheit Conversion formula for Fahrenheit degree and Celsius degree: Tf=Tcx1.8+32 Set temperature Fahrenheit Fahrenheit Fahrenheit display Fahrenheit display Fahrenheit display Fahrenheit Celsius （℃） Celsius （℃） Celsius （℃） temperature temperature temperature （℉）...

  • Page 56: Appendix 2: List Of Resistance For Temperature Sensor

    Service Manual Appendix 2: List of Resistance for Temperature Sensor Resistance table of temperature sensor (15K) Temp( Resistance(kΩ) Temp( Resistance(kΩ) Temp( Resistance(kΩ) Temp( Resistance(kΩ) 138.1 18.75 3.848 1.071 128.6 17.93 3.711 1.039 121.6 17.14 3.579 1.009 16.39 3.454 0.98 108.7 15.68 3.333 0.952...
  • Page 57 Service Manual Resistance table of temperature sensor (20K) Temp( Resistance(kΩ) Temp( Resistance(kΩ) Temp( Resistance(kΩ) Temp( Resistance(kΩ) 181.4 25.01 5.13 1.427 171.4 23.9 4.948 1.386 162.1 22.85 4.773 1.346 153.3 21.85 4.605 1.307 20.9 4.443 1.269 137.2 4.289 1.233 129.9 19.14 4.14 1.198 18.13...
  • Page 58 Service Manual Resistance table of temperature sensor (50K) Temp( Resistance(kΩ) Temp( Resistance(kΩ) Temp( Resistance(kΩ) Temp( Resistance(kΩ) 853.5 18.34 4.75 799.8 93.42 17.65 4.61 89.07 16.99 4.47 703.8 84.95 16.36 4.33 660.8 81.05 15.75 4.20 620.8 77.35 15.17 4.08 580.6 73.83 14.62 3.96 548.9...
  • Page 59 www.argoclima.com...

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