Hokkaido HKEU 266 Series Service Manual
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Hokkaido HKEU 266 Series Service Manual

Multi liberty dc inverter
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Table Of Contents
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Table of Contents

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Air Conditioners
Highwall type Indoor Units:
HKEU 206 X
HKEU 266 X
HKEU 356 X
HKEU 536 X
Console type Indoor Units:
HFIU 266 X
HFIU 356 X
HFIU 536 X
HRBU 206 X
HRBU 266 X
HRBU 356 X
HRBU 536 X
Service Manual (07/2011 - VA1)
Multi Liberty
DUAL Outdoor Units:
HCKU 406 X2
HCKU 536 X2
TRIPLE Outdoor Units:
HCKU 606 X3
HCKU 806 X3
POKER Outdoor Units:
HCKU 706 X4
HCKU 816 X4
HCKU 1066 X4
DC Inverter
HTFU 206 X
HTFU 266 X
HTFU 356 X
HTFU 536 X
Floor/Ceiling type Indoor Units:
HSFU 356 X
HSFU 536 X

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Summary of Contents for Hokkaido HKEU 266 Series

  • Page 1 Service Manual (07/2011 - VA1) Multi Liberty Air Conditioners DC Inverter Highwall type Indoor Units: 60 x 60 Cassette type Indoor Units: HKEU 206 X HTFU 206 X HKEU 266 X HTFU 266 X HKEU 356 X HTFU 356 X HKEU 536 X HTFU 536 X Console type Indoor Units:...

  • Page 2: Table Of Contents

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : Table of Contents DC Inverter Table of Contents 1. GENERAL INFORMATION ....................GI-2 1.1 GUIDELINES TO CONSULTATION & WARNINGS ............GI-2 1.2 ESSENTIAL FEATURES OF THESE MODELS ..............GI-3 1.3 MODEL RANGE OF UNITS ....................GI-8 1.4 TABLES OF COMBINATIONS BETWEEN INDOOR &...

  • Page 3: Table Of Contents

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Information DC Inverter Section 1: GENERAL INFORMATION Table of Contents 1. GENERAL INFORMATION ......................IG-2 1.1 GUIDELINES TO CONSULTATION & WARNINGS ..............IG-2 1.2 ESSENTIAL FEATURES OF THESE MODELS .................IG-3 1.3 MODEL RANGE OF UNITS ......................IG-8 1.4 TABLES OF COMBINATIONS BETWEEN INDOOR &...

  • Page 4: General Information

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter 1. GENERAL INFORMATION 1.1 GUIDELINES TO CONSULTATION & WARNINGS This Manual describes operation, installation and procedures for solving operation malfunctions Air Conditioners “Multi Liberty DC Inverter” with Indoor Units Highwall, 60 x 60 Cassette, Console, Floor/Ceiling and Low Ducted type.

  • Page 5: Essential Features Of These Models

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter 1.2 ESSENTIAL FEATURES OF THESE MODELS â Ozone friendly R410A refrigerant R410A refrigerant does not damage ozone at all (ODP=0), thus reducing the environmental impact of system. â...
  • Page 6 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter blackout. This means that there is no need to use the IR remote control.  However, if “TIMER” operation had been previously selected, it will be cancelled and need to be set again.
  • Page 7 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter  The profile of fan’s moving part allows to reduce the disturbance phenomena during air circulation inside Outdoor Unit.  The 4-way valve coil is powered during operation in Heating mode only. ...

  • Page 8: Automatic Defrosting

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter Outline of available functions & features of “Multi Liberty DC Inverter” Units Indoor Units ON/OFF by IR remote control Monitoring of temperature values Indoor temperature sensor (and temperature sensor integrated in IR remote control, on HKEU Indoor Units). Indoor heat exchanger temperature sensor.
  • Page 9 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter Outdoor Units Timed ON/OFF of compressor Min. interval between ON/OFF cycles of compressor is of 3 minutes. Outdoor fan with “Silent” shape For reducing noise level of outdoor fan, the shape of fan wheel has been expressly redrawn. Special fins in treated aluminium Aluminium fins of outdoor heat exchanger ensure a higher efficiency in heat exchange.

  • Page 10: Model Range Of Units

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter 1.3 MODEL RANGE OF UNITS Indoor Units Outdoor Units GI-8...

  • Page 11: Tables Of Combinations Between Indoor & Outdoor Units

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter 1.4 TABLES OF COMBINATIONS BETWEEN INDOOR & OUTDOOR UNITS Combinations of Indoor Units with Outdoor Unit HCKU 406 X2 1 I.U. 2 I.U. 206 + 206 266 + 266 206 + 266 266 + 356 206 + 356...
  • Page 12 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter Combinations of Indoor Units with Outdoor Unit HCKU 706 X4 1 I.U. 2 I.U. 3 I.U. 206 + 206 266 + 266 356 + 356 206 + 206 + 206 206 + 266 + 266 266 + 266 + 266 206 + 266 266 + 356...
  • Page 13 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter Combinations of Indoor Units with Outdoor Unit HCKU 1066 X4 1 I.U. 2 I.U. 3 I.U. 206 + 206 266 + 266 356 + 356 206 + 206 + 206 206 + 266 + 266 266 + 356 + 536 206 + 266 266 + 356...

  • Page 14: Capacity Tables For Combinations With I.u. Hkeu, Htfu, Hfiu

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter 1.5 CAPACITY TABLES FOR COMBINATIONS WITH I.U. HKEU, HTFU, HFIU Outdoor Unit HCKU 406 X2 (Cooling mode) Nominal Combinations Annual Energy Rated Capacity (kW) Power Consumption (kW) Capacity (kW) (W/W) Consumption...
  • Page 15 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter Outdoor Unit HCKU 536 X2 (Heating mode) Nominal Combinations Annual Energy Rated Capacity (kW) Power Consumption (kW) Capacity (kW) (W/W) Consumption Class (kWh) Unit Unit Unit Unit [500h/Year] (Std.
  • Page 16 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter Outdoor Unit HCKU 606 X3 (Heating mode) Combinations Annual Energy Nominal Capacity (kW) Rated Capacity (kW) Power Consumption (kW) (W/W) Consumption Class (kWh) Unit Unit Unit Unit Unit Unit [500h/Year]...
  • Page 17 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter Outdoor Unit HCKU 806 X3 (Heating mode) Combinations Annual Energy Nominal Capacity (kW) Rated Capacity (kW) Power Consumption (kW) (W/W) Consumption Class (kWh) Unit Unit Unit Unit Unit Unit [500h/Year]...
  • Page 18 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter Outdoor Unit HCKU 706 X4 (Cooling mode) Combinations Annual Energy Nominal Capacity (kW) Rated Capacity (kW) Power Consumption (kW) (W/W) Consumption Class (kWh) Unit Unit Unit Unit Unit Unit Unit...
  • Page 19 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter Outdoor Unit HCKU 706 X4 (Heating mode) Combinations Rated Capacity (kW) Power Consumption (kW) Annual Energy Nominal Capacity (kW) (W/W) Consumption Class (kWh) Unit Unit Unit Unit Unit Unit Unit...
  • Page 20 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter Outdoor Unit HCKU 816 X4 (Cooling mode) Combinations Rated Capacity (kW) Power Consumption (kW) Annual Energy Nominal Capacity (kW) (W/W) Consumption Class (kWh) Unit Unit Unit Unit Unit Unit Unit...
  • Page 21 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter Outdoor Unit HCKU 816 X4 (Heating mode) Combinations Rated Capacity (kW) Power Consumption (kW) Annual Energy Nominal Capacity (kW) (W/W) Consumption Class (kWh) Unit Unit Unit Unit Unit Unit Unit...
  • Page 22 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter Outdoor Unit HCKU 1066 X4 (Cooling mode) Combinations Annual Energy Nominal Capacity (kW) Rated Capacity (kW) Power Consumption (kW) (W/W) Consumption Class (kWh) Unit Unit Unit Unit Unit Unit Unit...
  • Page 23 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter Outdoor Unit HCKU 1066 X4 (Heating mode) Combinations Rated Capacity (kW) Power Consumption (kW) Energy Nominal Capacity (kW) Annual (W/W) Class Comsumption (kWh) Unit Unit Unit Unit Unit Unit Unit...

  • Page 24: Capacity Tables For Combinations With I.u. Hsfu, Hrbu

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter 1.6 CAPACITY TABLES FOR COMBINATIONS WITH I.U. HSFU, HRBU Outdoor Unit HCKU 406 X2 (Cooling mode) Nominal Combinations Annual Energy Rated Capacity (kW) Power Consumption (kW) Capacity (kW) (W/W) Consumption Class...
  • Page 25 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter Outdoor Unit HCKU 536 X2 (Heating mode) Nominal Combinations Rated Capacity (kW) Power Consumption (kW) Annual Energy Capacity (kW) (W/W) Consumption Class (kWh) Unit Unit Unit Unit [500h/Year] (Std.
  • Page 26 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter Outdoor Unit HCKU 606 X3 (Heating mode) Combinations Nominal Capacity (kW) Rated Capacity (kW) Power Consumption (kW) Annual Energy (W/W) Consumption Class (kWh) Unit Unit Unit Unit Unit Unit [500h/Year]...
  • Page 27 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter Outdoor Unit HCKU 806 X3 (Heating mode) Combinations Nominal Capacity (kW) Rated Capacity (kW) Power Consumption (kW) Annual Energy (W/W) Consumption Class (kWh) Unit Unit Unit Unit Unit Unit [500h/Year]...
  • Page 28 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter Outdoor Unit HCKU 706 X4 (Cooling mode) Combinations Annual Nominal Capacity (kW) Rated Capacity (kW) Power Consumption (kW) Energy (W/W) Consumption Class (kWh) Unit Unit Unit Unit Unit Unit Unit...
  • Page 29 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter Outdoor Unit HCKU 816 X4 (Cooling mode) Combinations Nominal Capacity (kW) Rated Capacity (kW) Power Consumption (kW) Annual Energy (W/W) Consumption Class (kWh) Unit Unit Unit Unit Unit Unit Unit...
  • Page 30 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter Outdoor Unit HCKU 816 X4 (Heating mode) Combinations Annual Nominal Capacity (kW) Rated Capacity (kW) Power Consumption (kW) Energy (W/W) Consumption Class (kWh) Unit Unit Unit Unit Unit Unit Unit...
  • Page 31 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter Outdoor Unit HCKU 1066 X4 (Cooling mode) Combinations Annual Nominal Capacity (kW) Rated Capacity (kW) Power Consumption (kW) Energy (W/W) Consumption Class (kWh) Unit Unit Unit Unit Unit Unit Unit...
  • Page 32 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter Outdoor Unit HCKU 1066 X4 (Cooling mode) Combinations Nominal Capacity (kW) Rated Capacity (kW) Power Consumption (kW) Annual Energy (W/W) Consumption Class (kWh) Unit Unit Unit Unit Unit Unit Unit...
  • Page 33 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter Outdoor Unit HCKU 1066 X4 (Heating mode) Annual Combinations Nominal Capacity (kW) Rated Capacity (kW) Power Consumption (kW) Energy (W/W) Consumption Class (kWh) Unit Unit Unit Unit Unit Unit Unit...

  • Page 34: Appearance Of Indoor & Outdoor Units

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter 1.7 APPEARANCE OF INDOOR & OUTDOOR UNITS “HIGHWALL” type Indoor Units : HKEU 206 X, 266 X HKEU 356 X HKEU 536 X GI-32...
  • Page 35 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter 60 x 60 CASSETTE type Indoor Units : HTFU 206 X, 266 X, 356 X, 536 X “CONSOLE” type Indoor Units : HFIU 266 X, 356 X, 536 X GI-33...
  • Page 36 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter FLOOR / CEILING type Indoor Units : HSFU 356 X, 536 X LOW DUCTED type Indoor Units : HRBU 206 X, 266 X, 356 X HRBU 536 X GI-34...
  • Page 37 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter Multi Liberty DC Inverter Outdoor Units : HCKU 406 X2 HCKU 536 X2 HCKU 606 X3 HCKU 806 X3 HCKU 706 X4 HCKU 816 X4 GI-35...
  • Page 38 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter Multi Liberty DC Inverter Outdoor Units : HCKU 1066 X4 GI-36...

  • Page 39: Outline Of Indoor & Outdoor Units

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter 1.8 OUTLINE OF INDOOR & OUTDOOR UNITS The Figure below is for explanation only. The real appearance of the components could be rather different. • Multi Liberty Highwall type Indoor Units (HKEU X) [1:1, 1:2, 1:3, 1:4] Air inlet Air outlet IR Signal Transmitter...

  • Page 40: Control Functions

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter • Outline of Display Panel on Multi Liberty Highwall type Indoor Units (HKEU X) “OPERATION” indication lamp This lamp illuminates when the air conditioner is in operation. “SELF CLEAN”...
  • Page 41 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter The Figure below is for explanation only. The real appearance of the components could be rather different. • Multi Liberty 60 x 60 Cassette type Indoor Units (HTFU X) [1:1, 1:2, 1:3, 1:4] Air outlet Air inlet •...
  • Page 42 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter • Outline of Display Panel on Multi Liberty Cassette type Indoor Units (HTFU X) “OPERATION” LED (Green) MANUAL “TIMER” LED (Green) “DEF/FAN” LED (Red) OPERATION TIMER DEF./FAN ALARM “ALARM”...
  • Page 43 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter The Figure below is for explanation only. The real appearance of the components could be rather different. • Multi Liberty “Console” type Indoor Unit (HFIU X) [1:1, 1:2, 1:3, 1:4] Air inlet Air outlet Air inlet...
  • Page 44 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter • Outline of Display Panel on Multi Liberty “Console” type Indoor Units (HFIU X) IR receiver window It allows to receive the signals sent by IR remote controller. OPERATION LED It lights up when the air conditioner is operating.
  • Page 45 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter The Figure below is for explanation only. The real appearance of the components could be rather different. • Multi Liberty Floor/Ceiling type Indoor Units (HSFU X) [1:1, 1:2, 1:3, 1:4] Air outlet Air inlet OPERATION...
  • Page 46 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter • Outline of Display Panel on Multi Liberty Floor/Ceiling type Indoor Units (HSFU X) OPERATION TIMER DEF./FAN ALARM MANUAL OPERATION LED When Indoor Unit is powered, this indicator starts flashing. The LED lights up when Indoor Unit is operating.
  • Page 47 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter The Figure below is for explanation only. The real appearance of the components could be rather different. • Multi Liberty Low Ducted type Indoor Units (HRBU X) [1:1, 1:2, 1:3, 1:4] Air outlet Air inlet •...
  • Page 48 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter • Outline of Display Panel on Multi Liberty Low Ducted type Indoor Units (HRBU X) “OPERATION” LED (Green) MANUAL “TIMER” LED (Green) “DEF/FAN” LED (Red) OPERATION TIMER DEF./FAN ALARM “ALARM”...

  • Page 49: Ir Remote Controllers (Standard Type)

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter 1.9 IR REMOTE CONTROLLERS (STANDARD TYPE) For HKEU (206, 266, 356, 536) X Models R51I4/BGE GI-47...
  • Page 50 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n INSTALLATION & CORRECT USE OF IR REMOTE CONTROLLER Max. allowed distance of remote controller: 8 metres 1) Please make sure the 2 batteries (“AAA” type, 1.5V) are fully charged and correctly fitted in the special slot on the remote controller, by respecting the polarity marked on the remote control itself.
  • Page 51 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n FIRST FITTING IN AND/OR REPLACEMENT OF REMOTE CONTROLLER’S BATTERIES SET TEMPERATURE (°C) AUTO HIGH COOL HEAT ADJUST ON/OFF FAN SPEED MODE DIRECTION TIMER ON SLEEP SWING CLEAN TIMER OFF RESET LOCK...
  • Page 52 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n OUTLINE OF IR REMOTE CONTROLLER’S BUTTONS SET TEMPERATURE (°C) AUTO HIGH COOL HEAT ADJUST ON/OFF MODE FAN SPEED DIRECTION TIMER ON SLEEP SWING CLEAN TIMER OFF RESET LOCK SELF FOLLOW...
  • Page 53 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n OUTLINE OF IR REMOTE CONTROLLER’S BUTTONS 7) LED DISPLAY button : To light up/switch off the indicators (digital display, etc.) placed on Indoor Unit’s frontal panel. 8) FAN SPEED button : To change the indoor fan speed.
  • Page 54 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n OUTLINE OF IR REMOTE CONTROLLER’S BUTTONS 15) AIR CLEAN button : To activate/deactivate ionizer device (generating anions) integrated on these Indoor Units. 16) FOLLOW ME button : To activate/deactivate ambient temperature sensor which is integrated in IR remote controller.
  • Page 55 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n OUTLINE OF IR REMOTE CONTROLLER’S DISPLAY TIMER ON OFF 1) Digital display: It shows set temperature value in °C. During TIMER setting procedure, it shows time interval (h) referred to programmed automatic start and/or stop of air conditioner.
  • Page 56 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n OUTLINE OF REMOTE CONTROLLER’S DISPLAY TIMER ON OFF 8) “FOLLOW ME” indicator: When this indicator is displayed, it indicates that ambient temperature sensor integrated in IR remote controller has been activated.
  • Page 57 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter For HTFU (206, 266, 356, 536) X Models R11HG/E GI-55...
  • Page 58 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n INSTALLATION & CORRECT USE OF IR REMOTE CONTROLLER Max. allowed distance of remote controller: 8 metres 1) Please make sure the 2 batteries (“AAA” type, 1.5V) are fully charged and correctly fitted in the special slot on the remote controller, by respecting the polarity marked on the remote control itself.
  • Page 59 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n FIRST FITTING IN AND/OR REPLACEMENT OF REMOTE CONTROLLER’S BATTERIES IR remote controller requires 2 normal alkaline batteries “AAA” type, 1.5V.  Remove the cover of battery case by sliding it in the direction shown by the arrows.
  • Page 60 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n OUTLINE OF REMOTE CONTROLLER’S BUTTONS "MODE" BUTTON "ON/OFF" BUTTON Push this button to select Push the button to start operation. operation modes. Push the button again to stop Each time the button is pressed, operation.
  • Page 61 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n OUTLINE OF IR REMOTE CONTROLLER’S BUTTONS "AIR DIRECTION" BUTTON "ECONOMIC RUNNING" BUTTON Press this button to change Press this button to select t h e l o u ve r s ' a n g l e fo r "Energy Saving"...
  • Page 62 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n OUTLINE OF REMOTE CONTROLLER’S DISPLAY Trasmission indicator This indicator blinks when signals are sent to the Indoor Unit by the remote controller. Mode display The current operation mode is shown: •...
  • Page 63 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter For HFIU (266, 356, 536) X Models R51D/E GI-61...
  • Page 64 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n INSTALLATION & CORRECT USE OF IR REMOTE CONTROLLER Max. allowed distance of remote controller: 8 metres 1) Please make sure the 2 batteries (“AAA” type, 1.5V) are fully charged and correctly fitted in the special slot on the remote controller, by respecting the polarity marked on the remote control itself.
  • Page 65 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n FIRST FITTING IN AND/OR REPLACEMENT OF REMOTE CONTROLLER’S BATTERIES SET TEMPERATURE (°C) AUTO HIGH COOL HEAT TEMP ON/OFF FAN SPEED MODE SWING TIMER ON ECONOMIC TIMER OFF RESET LOCK AIR DIRECTION POWERFUL...
  • Page 66 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n OUTLINE OF IR REMOTE CONTROLLER’S BUTTONS SET TEMPERATURE (°C) AUTO HIGH COOL HEAT TEMP ON/OFF MODE FAN SPEED SWING ECONOMIC TIMER ON TIMER OFF RESET LOCK AIR DIRECTION POWERFUL 1) TEMP button...
  • Page 67 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n OUTLINE OF IR REMOTE CONTROLLER’S BUTTONS 7) POWERFUL button: In “COOL” mode and “HEAT” mode, this button makes the air conditioner blow strong air with super high fan speed.
  • Page 68 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n OUTLINE OF IR REMOTE CONTROLLER’S DISPLAY TIMER ON OFF 1) Digital display: It shows set temperature value in °C. During TIMER setting procedure, it shows time interval (h) referred to progrmmed automatic start and/or stop of air conditioner.
  • Page 69 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n OUTLINE OF IR REMOTE CONTROLLER’S DISPLAY TIMER ON OFF 7) FAN SPEED indicator: It shows the currently selected speed for indoor fan. In “AUTO” and “DRY” modes, there is no display of fan set speed, as the setting cannot be modified by the User.
  • Page 70 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter For HSFU (356, 536) X Models R05/BGE GI-68...
  • Page 71 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n INSTALLATION & CORRECT USE OF IR REMOTE CONTROLLER Max. allowed distance of remote controller: 8 metres 1) Please make sure the 2 batteries (“AAA” type, 1.5V) are fully charged and correctly fitted in the special slot on the remote controller, by respecting the polarity marked on the remote control itself.
  • Page 72 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n FIRST FITTING IN AND/OR REPLACEMENT OF REMOTE CONTROLLER’S BATTERIES IR remote controller requires 2 normal alkaline batteries “AAA” type, 1.5V.  Remove the cover of battery case by sliding it in the direction shown by the arrows.
  • Page 73 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n OUTLINE OF IR REMOTE CONTROLLER’S BUTTONS 1) MODE button: Each time the button is pressed, the selected operation mode changes according to the following sequence: AUTO COOL HEAT AUTO = Operation in AUTOMATIC mode...
  • Page 74 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter 2) FAN SPEED button: To change the indoor fan speed. The available settings are the following: AUTO (AUTOMATIC speed) LOW (LOW speed) MED (MEDIUM speed) HIGH (HIGH speed). 3) ADJUST button Press this button if you desire to reduce set temperature by 1°C.
  • Page 75 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter 12) RESET button: Press this button if it is needed to restore normal operation of remote controller in case of problems, or after replacing batteries. In both cases, remote controller is initialized again, therefore factory default settings are restored. Therefore, it is necessary to set current time again.
  • Page 76 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n OUTLINE OF IR REMOTE CONTROLLER’S DISPLAY Transmission indicator It blinks if remote controller is sending signals to Indoor Unit. "TEMP" indicator It indicates set temperature value. In FAN mode, there is no display of temperature value.
  • Page 77 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter For HRBU (206, 266, 356, 536) X Models R11HG/E GI-75...
  • Page 78 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n INSTALLATION & CORRECT USE OF IR REMOTE CONTROLLER MANUAL OPERATION TIMER DEF./FAN ALARM Max. allowed distance of remote controller: 8 metres 1) Please make sure the 2 batteries (“AAA” type, 1.5V) are fully charged and correctly fitted in the special slot on the remote controller, by respecting the polarity marked on the remote control itself.
  • Page 79 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n FIRST FITTING IN AND/OR REPLACEMENT OF REMOTE CONTROLLER’S BATTERIES IR remote controller requires 2 normal alkaline batteries “AAA” type, 1.5V.  Remove the cover of battery case by sliding it in the direction shown by the arrows.
  • Page 80 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n OUTLINE OF REMOTE CONTROLLER’S BUTTONS "MODE" BUTTON "ON/OFF" BUTTON Push this button to select Push the button to start operation. operation modes. Push the button again to stop Each time the button is pressed, operation.
  • Page 81 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n OUTLINE OF IR REMOTE CONTROLLER’S BUTTONS "AIR DIRECTION" BUTTON "ECONOMIC RUNNING" BUTTON Press this button to change Press this button to select t h e l o u ve r s ' a n g l e fo r "Energy Saving"...
  • Page 82 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n OUTLINE OF REMOTE CONTROLLER’S DISPLAY Trasmission indicator This indicator blinks when signals are sent to the Indoor Unit by the remote controller. Mode display The current operation mode is shown: •...

  • Page 83: Optional Wired Controllers For "Console" Type Units

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter 1.10 OPTIONAL WIRED CONTROLLERS FOR “CONSOLE” TYPE UNITS DTW-IHXR Wired Controller With integrated ambient temperature sensor & “FOLLOW ME” function. DTWS-IHXR Wired Controller GI-81...

  • Page 84: Operation Conditions For Multi Liberty Dc Inverter Systems

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter 1.11 OPERATION CONDITIONS FOR MULTI LIBERTY DC INVERTER SYSTEMS  To obtain the best performances from these air-conditioning systems, it is recommended their use under the following temperature ranges: Operation mode Multi Liberty DC Inverter Outdoor Units Temperature conditions...

  • Page 85: Distribution Of Airflow Supplied By Indoor Units

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter 1.12 DISTRIBUTION OF AIRFLOW SUPPLIED BY INDOOR UNITS n ADJUSTING THE VERTICAL AIRFLOW DIRECTION (HKEU X) The inner electronics automatically selects the best position for the louver, according to the Indoor Unit’s operation mode.
  • Page 86 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n ADJUSTING THE HORIZONTAL AIRFLOW DIRECTION (HKEU X) Manual adjustment of vertical grille (rightside-leftside): Horizontal airflow direction can be manually set by moving the vertical outlet grille behind the horizontal flap.
  • Page 87 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n ADJUSTING THE VERTICAL AIRFLOW DIRECTION (HTFU X) The inner electronics automatically selects the best position for the louver, according to the Indoor Unit’s operation mode. If you desire to change this position, please proceed in the following way. How to orient vertical airflow direction: Press “AIR DIRECTION”...
  • Page 88 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter WARNING • If the motorized louver malfunctions, it is adviced to turn off the air conditioner and cut the power for some minutes; then restore the power, turn the Unit on again and check if the louver works properly. •...
  • Page 89 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n ADJUSTING THE VERTICAL AIRFLOW DIRECTION (HFIU X) Air outlet selector This selector allows you to choose the air outlet direction: in this way, Indoor Unit can supply air from both air outlets (factory default), or from upper air outlet only.
  • Page 90 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n ADJUSTING THE VERTICAL AIRFLOW DIRECTION (HFIU X) Fixed position of air outlet flaps By pressing "AIR DIRECTION" button on remote controller, it is possible to select the angle of flaps on Indoor Unit‘s air outlets.
  • Page 91 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter WARNING • The direction of motorized flaps must be adjusted by pressing the relevant button on remote controller only. • Never apply force on flaps by orienting them by hand, in order to avoid to damage the adjustment mechanism of flaps themselves.
  • Page 92 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n ADJUSTING THE VERTICAL AIRFLOW DIRECTION (HSFU X) The inner electronics automatically selects the best position for the louver, according to the Indoor Unit’s operation mode. If you desire to change this position, please proceed in the following way. How to orient vertical airflow direction: Press “AIR DIRECTION”...
  • Page 93 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n ADJUSTMENT OF HORIZONTAL AIRFLOW DIRECTION (HSFU X) Horizontal automatic swinging (“SWING”) of louvers To obtain automatic swinging of air outlet louvers rightside to leftside and vice versa, it is necessary that Indoor Unit i operating.
  • Page 94 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter WARNING • When the air conditioner is connected to power (initial power), the horizontal louver may generate a sound for about 10 secondi: this is a normal operation. •...
  • Page 95 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n ADJUSTMENT OF VERTICAL AIRFLOW DIRECTION (HRBU X) Adjustment of horizontal flaps integrated in air outlet vents On the Indoor Units of this type, air is supplied through air outlet vents placed at the end of ducts. The position and the type of air outlet vents are determined during design and carrying out of duct work.
  • Page 96 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter Recommended options for adjustment of horizontal flaps and errors to be avoided SIDE VIEW 40˚ Cooling mode / Dry mode Heating mode • In Heating mode, it is absolutely necessary to avoid thait hot air supplied through the vent keeps (”stratification”...

  • Page 97: Operation In Emergency Mode/Test

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter 1.13 OPERATION IN EMERGENCY MODE/TEST n HIGHWALL TYPE MODELS (HKEU X) • Access to Emergency / Test button: To reach the Emergency/Test button, lift the frontal panel. Opening the frontal panel: •...
  • Page 98 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n 60 x 60 CASSETTE TYPE MODELS (HTFU X) MANUAL OPERATION TIMER DEF./FAN ALARM LED Display • Access to Emergency/Test button: On Indoor Unit’s LED Display, you can easily find “MANUAL” button. •...
  • Page 99 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n “CONSOLE” TYPE MODELS (HFIU X) MANUAL LED Display • Access to Emergency/Test: On Indoor Unit’s LED Display, you can easily find “MANUAL” button. • Operation in “AUTO” Emergency Mode: If the Remote Controller is not available or its batteries are exhausted, nevertheless the air conditioner can be started by pressing once the “AUTO/COOL”...
  • Page 100 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n FLOOR/CEILING TYPE MODELS (HSFU X) OPERATION TIMER DEF./FAN ALARM MANUAL LED Display • Access to Emergency/Test button: On Indoor Unit’s LED Display, you can easily find “MANUAL” button. •...
  • Page 101 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n LOW DUCTED TYPE MODELS (HRBU X) MANUAL OPERATION TIMER DEF./FAN ALARM LED Display Wiring • Access to Emergency/Test button: On Indoor Unit’s LED Display, you can easily find “MANUAL” button. •...

  • Page 102: Automatic Restart Function After A Blackout

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter 1.14 AUTOMATIC RESTART FUNCTION AFTER A BLACKOUT  This function requires the presence of a special module for automatic restart (“Auto-restart”). This module is already provided in inner electronis of all “Multi Liberty DC Inverter”...

  • Page 103: Advice For Economic Use Of System

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter 1.15 ADVICE FOR ECONOMIC USE OF SYSTEM n HIGHWALL MODELS (HKEU X) °C n Set a suitable temperature value: • During operation in Heating mode, take care not to set a too high temperature value.
  • Page 104 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n 60 x 60 CASSETTE MODELS (HTFU X) °C n Set a suitable temperature value: • During operation in Heating mode, take care not to set a too high temperature value. •...
  • Page 105 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n “CONSOLE” MODELS (HFIU X) °C n Set a suitable temperature value: • During operation in Heating mode, take care not to set a too high temperature value. •...
  • Page 106 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n FLOOR/CEILING MODELS (HSFU X) n Set a suitable temperature value: • During operation in Heating mode, take care not to set a too high temperature value. •...
  • Page 107 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 1. General Informationi DC Inverter n LOW DUCTED MODELS (HRBU X) n Set a suitable temperature value: • During operation in Heating mode, take care not to MANUAL set a too high temperature value. OPERATION TIMER DEF./FAN ALARM •...
  • Page 108 Multi Liberty Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter DC Inverter Section 2: INDOOR UNITS Table of Contents 2. INDOOR UNITS .......................... UIN-2 2.1 HKEU X MODELS (HIGHWALL TYPE) ..................UIN-2 2.2 HTFU X MODELS (60 x 60 CASSETTE TYPE) ................

  • Page 109: Indoor Units

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter 2. INDOOR UNITS 2.1 HKEU X MODELS (HIGHWALL TYPE) 1. Technical Specifications of HKEU X Multi Liberty Indoor Units Model name HKEU 206 X Power supply V-Ph-Hz 220~240-1-50 (on Outdoor Unit) Cooling Capacity...
  • Page 110 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter Model name HKEU 266 X Power supply V-Ph-Hz 220~240-1-50 (on Outdoor Unit) Cooling Capacity 2.60 Power input Running current 0.17 Capacity 2.90 Heating Power input Running current 0.17 Dehumidifying capacity Litres/h...
  • Page 111 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter Model name HKEU 356 X Power supply V-Ph-Hz 220~240-1-50 (on Outdoor Unit) Cooling Capacity 3.50 Power input Running current 0.20 Capacity 3.80 Heating Power input Running current 0.20 Dehumidifying capacity Litres/h...
  • Page 112 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter Model name HKEU 536 X Power supply V-Ph-Hz 220~240-1-50 (on Outdoor Unit) Cooling Capacity 5.30 Power input Running current 0.24 Capacity 5.45 Heating Power input Running current 0.24 Dehumidifying capacity Litres/h...
  • Page 113 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter 2. Dimensions of HKEU X Multi Liberty Indoor Units Unit: mm Dimension Width (W) Height (H) Depth (D) Model HKEU 206 X HKEU 266 X HKEU 356 X HKEU 536 X IU-6...
  • Page 114 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter 3. Installation & Service spaces of HKEU X Multi Liberty Indoor Units HKEU (206, 266, 356, 536) X Models More than 15 cm More than 12 cm More than 12 cm More than 2.3 m CAUTION...
  • Page 115 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter 4. Wiring Diagrams of HKEU (206, 266, 356, 536) X Multi Liberty Indoor Units Indoor fan motor Frontal panel Motor Ionizer Flap motor CN12 CN13 CN15 CN11 CN14 Indoor Unit’s PCB White...
  • Page 116 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter “Plug” cable for Connection between HKEU X Indoor Units and Multi Liberty DC Inverter Outdoor Units (By dedicated connectors (Units “A”, “B”, “C”, “D”) for “Plug”, on Outdoor Unit) (TO INDOOR UNIT’S TERMINAL BLOCK) Unit : mm (TO OUTDOOR UNIT)
  • Page 117 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter 5. Noise level of HKEU X Multi Liberty Indoor Units Measurement conditions: 1m in front of Indoor Unit Indoor Unit Microphone Noise level at 1m, dB(A) Models “Hi.”...
  • Page 118 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter Measurement conditions: 2.5m in front of Indoor Unit Indoor Unit 2.5m Microphone Noise level at 2.5m, dB(A) Models “Hi.” speed “Me” speed “Lo.” speed HKEU 206 X HKEU 266 X HKEU 356 X HKEU 536 X...
  • Page 119 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter 6. Accessories provided with HKEU X Multi Liberty Indoor Units Component Aspect Q.ty Function Installation plate Installation screws ST3.9 x 25 For fixing Unit’s components Infrared Remote Controller Wall bearing for Remote Controller Wall fixing of Remote Controller Screws ST2.9 x 10-C-H for...

  • Page 120: Htfu X Models (60 X 60 Cassette Type)

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter 2.2 HTFU X MODELS (60 x 60 CASSETTE TYPE) 1. Technical Specifications of HTFU X Multi Liberty Indoor Units Model name HTFU 206 X Power supply V-Ph-Hz 220~240-1-50 (on Outdoor Unit) Cooling Capacity...
  • Page 121 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter Model name HTFU 266 X Power supply V-Ph-Hz 220~240-1-50 (on Outdoor Unit) Cooling Capacity 2.90 Power input Running current 0.26 Capacity 3.20 Heating Power input Running current 0.26 Dehumidifying capacity Litres/h...
  • Page 122 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter Model name HTFU 356 X Power supply V-Ph-Hz 220~240-1-50 (on Outdoor Unit) Cooling Capacity 3.50 Power input Running current 0.26 Heating Capacity 3.80 Power input Running current 0.26 Dehumidifying capacity Litres/h...
  • Page 123 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter Model name HTFU 536 X Power supply V-Ph-Hz 220~240-1-50 (on Outdoor Unit) Cooling Capacity 5.30 Power input Running current 0.40 Capacity 5.90 Heating Power input Running current 0.40 Dehumidifying capacity Litres/h...
  • Page 124 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter 2. Dimensions of HTFU X Multi Liberty Indoor Units Staff Unit’s body Suspended ceiling Panel 401 (Distance between suspension brackets)) Unit: mm Dimension Width (W) Height (H) Depth (D) Model HTFU 206 X...
  • Page 125 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter 3. Installation & service spaces for HTFU X Multi Liberty Indoor Units HTFU (206, 266, 356, 536) X Models Unit: mm Air outlet Air inlet Air outlet Floor >...
  • Page 126 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter 4. Wiring Diagrams of HTFU (206, 266, 356, 536) X Multi Liberty Indoor Units Condensate drain pump Float switch Indoor fan motor White CN10 CN13 White Indoor Unit’s PCB CN14 Function of microswitches on PCB CN11...
  • Page 127 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter “Plug” cable for Connection between HTFU X Indoor Units and Multi Liberty DC Inverter Outdoor Units (By dedicated connectors (Units “A”, “B”, “C”, “D”) for “Plug”, on Outdoor Unit) (TO INDOOR UNIT’S TERMINAL BLOCK) Unit : mm (TO OUTDOOR UNIT)
  • Page 128 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter 5. Noise level of HTFU X Multi Liberty Indoor Units Measurement conditions: 1m below Indoor Unit Indoor Unit 1.0m Microphone Noise level at 1m, dB(A) Models “Hi.” speed “Me”...
  • Page 129 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter Measurement conditions: 2.5m below Indoor Unit Indoor Unit 2.5m Microphone Noise level at 2.5m, dB(A) Models “Hi.” speed “Me” speed “Lo.” speed HTFU 206 X HTFU 266 X HTFU 356 X HTFU 536 X IU-22...
  • Page 130 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter 6. Accessories provided with HTFU X Multi Liberty Indoor Units Component Aspect Q.ty Function Paper reference pattern For opening the suspended ceiling Bolts M5 x 16 To fix the reference pattern Screw anchor (Ø12) For suspending the Indoor Unit (hook type)

  • Page 131: Hfiu X Models (Console Type)

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter 2.3 HFIU X MODELS (CONSOLE TYPE) 1. Technical Specifications of HFIU X Multi Liberty Indoor Units Model name HFIU 266 X Power supply V-Ph-Hz 220~240-1-50 (on Outdoor Unit) Cooling Capacity 2.60...
  • Page 132 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter Model name HFIU 356 X Power supply V-Ph-Hz 220~240-1-50 (on Outdoor Unit) Cooling Capacity 3.50 Power input Running current 0.13 Heating Capacity 4.10 Power input Running current 0.13 Dehumidifying capacity Litres/h...
  • Page 133 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter Model name HFIU 536 X Power supply V-Ph-Hz 220~240-1-50 (on Outdoor Unit) Cooling Capacity 5.30 Power input Running current 0.22 Capacity 5.90 Heating Power input Running current 0.22 Dehumidifying capacity Litres/h...
  • Page 134 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter 2. Dimensions of HFIU X Multi Liberty Indoor Units HFIU (266, 356, 536) X Models Unit: mm Fixing elements IU-27...
  • Page 135 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter 3. Installation & service spaces for HFIU (266, 356, 536) X Multi Liberty Indoor Units This type of Indoor Unit is installed in vertical position, with frontal and side air inlet and upper and lower air outlet (factory default setting).
  • Page 136 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter 4. Wiring Diagrams of HFIU X Multi Liberty Indoor Units HFIU (266, 356, 536) X Models PCB of microswitches LED PCB & To Wired Controller (Optional) IR receiver CN15 CN10 Meaning of symbols...
  • Page 137 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter Dedicated connectors (Units “A”, “B”, “C”, “D”) for “PLUG”, on Outdoor Unit Outdoor Unit’s terminal block Ground Ground Female for “plug” Female for “plug” Female for “plug” Female for “plug”...
  • Page 138 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter “Plug” cable for Connection between HFIU X Indoor Units and Multi Liberty DC Inverter Outdoor Units (By dedicated connectors (Units “A”, “B”, “C”, “D”) for “Plug”, on Outdoor Unit) (TO OUTDOOR UNIT’S TERMINAL BLOCK) Unit : mm (TO OUTDOOR UNIT)
  • Page 139 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter 5. Noise level of HFIU X Multi Liberty Indoor Units Measurement conditions: 1m in front of Indoor Unit 1.0m Microphone Noise level at 1m, dB(A) Models “Lo.” speed “Hi.”...
  • Page 140 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter Measurement conditions: 2.5m in front of Indoor Unit 2.5m Microphone Noise level at 2.5m, dB(A) Models “Hi.” speed “Lo.”speed “Me” speed HFIU 266 X HFIU 356 X HFIU 536 X IU-33...
  • Page 141 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter 6. Accessories provided with HFIU X Multi Liberty Indoor Units Components Q.ty Aspect Function User’s Manual Installation Manual Indoor Unit’s installation brackets For Unit’s fixing Control of Unit Infrared Remote Controller Remote Controller’s wall bearing Wall fixing...

  • Page 142: Hsfu X Models (Floor/Ceiling Type)

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter 2.4 HSFU X MODELS (FLOOR/CEILING TYPE) 1. Technical Specifications of HSFU X Multi Liberty Indoor Units Model name HSFU 356 X Power supply V-Ph-Hz 220~240-1-50 (on Outdoor Unit) Cooling Capacity 3.50...
  • Page 143 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter Model name HSFU 536 X Power supply V-Ph-Hz 220~240-1-50 (on Outdoor Unit) Cooling Capacity 5.30 Power input Running current 0.145 Capacity 5.90 Heating Power input Running current 0.145 Dehumidifying capacity Litres/h...
  • Page 144 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter 2. Dimensions of HSFU X Multi Liberty Indoor Units Unit: mm Holes for refrigerant lines & drain hose Fixing clamp = Hole for refrigerant lines and drain hose. Hole for refrigerant lines Hole for drain hose References to dimensioned drawings:...
  • Page 145 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter 3. Service spaces for HSFU X Multi Liberty Indoor Units HSFU (356, 536) X Models Unit: mm ≥ 35mm ≥ 1000mm IU-38...
  • Page 146 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter 4. Wiring Diagrams of HSFU (356, 536) X Multi Liberty Indoor Units Indoor fan motor White CN10 CN13 White Indoor Unit’s PCB Compensation value of temperature in Heating mode CN12 CN14 Microswitch...
  • Page 147 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter “Plug” cable for Connection between HSFU X Indoor Units and Multi Liberty DC Inverter Outdoor Units (By dedicated connectors (Units “A”, “B”, “C”, “D”) for “Plug”, on Outdoor Unit) (TO INDOOR UNIT’S TERMINAL BLOCK) Unit : mm (TO OUDOOR UNIT)
  • Page 148 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter 5. Noise level of HSFU X Multi Liberty Indoor Units Measurement conditions (Floor type installation): 1 m in front of Indoor Unit Microphone 1.0m Air outlet Indoor Unit Measurement conditions (Ceiling type installation): 1m below Indoor Unit Air outlet Indoor Unit...
  • Page 149 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter Measurement conditions (Floor type installation): 2.5m in front of Indoor Unit Microphone 2.5m Air outlet Indoor Unit Measurement conditions (Ceiling type installation): 2.5m below Indoor Unit Air outlet Indoor Unit 1.0m Microphone...
  • Page 150 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter 6. Accessories provided with HSFU X Multi liberty Indoor Units Component Q.ty Aspect Function User’s Manual Installation Manual Floor type installation bracket For wall fixing Ceiling type installation bracket For ceiling fixing Control of Unit Infrared Remote Controller...

  • Page 151: Hrbu X Models (Low Ducted Type)

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter 2.5 HRBU X MODELS (LOW DUCTED TYPE) 1. Technical Specifications of HRBU X Multi Liberty Indoor Units Model name HRBU 206 X Power supply V-Ph-Hz 220~240-1-50 (on Outdoor Unit) Cooling Capacity 2.00...
  • Page 152 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter Model name HRBU 266 X Power supply V-Ph-Hz 220~240-1-50 (on Outdoor Unit) Cooling Capacity 2.60 Power input Running current 0.20 Capacity 3.20 Heating Power input Running current 0.20 Dehumidifying capacity Litres/h...
  • Page 153 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter Model name HRBU 356 X Power supply V-Ph-Hz 220~240-1-50 (on Outdoor Unit) Cooling Capacity 3.20 Power input Running current 0.20 Capacity 3.80 Heating Power input Running current 0.20 Dehumidifying capacity Litres/h...
  • Page 154 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter Model name HRBU 536 X Power supply V-Ph-Hz 220~240-1-50 (on Outdoor Unit) Cooling Capacity 5.30 Power input Running current 0.30 Heating Capacity 5.90 Power input Running current 0.30 Dehumidifying capacity Litres/h...
  • Page 155 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter 2. Dimensions of HRBU X Multi Liberty Indoor Units HRBU (206, 266, 356) X Models Unit: mm Air outlet Drain hose (Ø25) Refrigerant connection Gas side (Ø9.52, 3/8”) Refrigerant connection Liquid side (Ø6.35, 1/4”) Fresh air inlet...
  • Page 156 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter 3. Service spaces for HRBU X Multi Liberty Indoor Units HRBU (206, 266, 356, 536) X Models Unit: mm Air outlet Refrigerant pipings’ connections VIEW A >500mm >100mm Air inlet plenum <1000mm...
  • Page 157 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter 4. Wiring Diagrams of HRBU (206, 266, 356, 536) X Multi Liberty Indoor Units Indoor fan motor White CN10 CN13 White Indoor Unit’s PCB CN14 Function of microswitches on PCB CN11 Black Compensation value of...
  • Page 158 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter “Plug” cable for Connection between HRBU X Indoor Units and Multi Liberty DC Inverter Outdoor Units (By dedicated connectors (Units “A”, “B”, “C”, “D”) for “Plug”, on Outdoor Unit) (TO INDOOR UNIT’S TERMINAL BLOCK) Unit : mm (TO OUTDOOR UNIT)
  • Page 159 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter 5. Noise level of HRBU X Multi Liberty Indoor Units Measurement conditions: 1m below Indoor Unit’s air inlet grille Indoor Unit Air outlet duct Air inlet grille Microphone Noise level at 1m, dB(A) Models...
  • Page 160 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter Measurement conditions: 2.5m below Indoor Unit’s air inlet grille Indoor Unit Air outlet duct Air inlet grille 2.5m Microphone Noise level at 2.5m, dB(A) Models “Hi” speed “Me”...
  • Page 161 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter 6. Accessories provided with HRBU X Multi Liberty Indoor Units Component Q.ty Aspect Function User’s Manual To be delivered to Customer Installation Manual To be delivered to Customer Display Board &...

  • Page 162: Cleaning & Maintenance Of Indoor Units

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter 2.6 CLEANING & MAINTENANCE OF INDOOR UNITS n HIGHWALL TYPE MODELS (HKEU X) WARNING Before starting any kind of ordinary maintenance, it is necessary to stop operation of system and disconnect system itself by switching over main switch to “OFF”.
  • Page 163 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter n Cleaning of polypropylene net type filters (HKEU X Multi Liberty Models) Remove the net type filters by detaching the fixing latches, as it is shown in Fig. 6. Take out each filter by pulling it downwards, as it shown in Fig.
  • Page 164 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter n If you foresee not using the system for a long time Operate the Indoor Unit in “Fan” mode for at least 2 hours, in order to remove residual humidity inside it.
  • Page 165 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter n 60 x 60 CASSETTE TYPE MODELS (HTFU X) WARNING Before starting cleaning operations, it is necessary to stop operation of system and disconnect system itself by switching over main switch to “OFF”. n Cleaning of Indoor Unit and Remote Controller (HTFU X Multi Liberty Models) WARNING •...
  • Page 166 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter n Cleaning the polypropylene net type filter (HTFU X Multi Liberty Models) Remove the net type filter by detaching the fixing latches on Indoor Unit’s air inlet grille. Carry out the cleaning of filters by using first a vacuum cleaner, and then wash the filters in cold or just tepid running water (Fig.
  • Page 167 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter n Before starting the system after it has not been operated for a long time Replace batteries in infrared Remote Controller, and check if contacts are not damaged (eventual oxidation, etc.) inside the battery case.
  • Page 168 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter n CONSOLE TYPE MODELS (HFIU X) WARNING Before starting cleaning operations, it is necessary to stop operation of system and disconnect the system itself by switching over main switch to “OFF”. n Cleaning of Indoor Unit and Remote Controller (HFIU X Multi Liberty Models) WARNING •...
  • Page 169 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter n Cleaning of polypropylene net type filter (HFIU X Multi Liberty Models) Clean net type filter by using a vacuum cleaner and adjusting it at min. suction capacity, in order to avoid to damage the filtering net, as it is shown in Fig.
  • Page 170 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter n If you foresee not using the system for a long time Operate the Indoor Unit in “Fan” mode for at least 2 hours, in order to remove residual humidity inside it.
  • Page 171 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter n FLOOR/CEILING TYPE MODELS (HSFU X) WARNING Before starting cleaning operations, it is necessary to stop operation of system and disconnect system itself by switching over main switch to “OFF”. n Cleaning of Indoor Unit and Remote Controller (HSFU X Multi Liberty Models) WARNING To clean Indoor Unit’s panel and Remote Controller,...
  • Page 172 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter n Cleaning of polypropylene net type filters (HSFU X Multi Liberty Models) With air inlet grille slightly open, detach the air filters (one on rightside and one on leftside) and take them out, making them sliding in the direction of Indoor Unit’s air outlet.
  • Page 173 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter n Cleaning of Indoor Unit’s air inlet grille (HSFU X Multi Liberty Models) Dry well air inlet grille, by using a soft cloth which does not leave material pieces on the grille itself. Re-install the grille and the air filters by reverse Close operations of those previously carried out for removing...
  • Page 174 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter n LOW DUCTED TYPE MODELS (HRBU X) WARNING Before starting whatever cleaning operation, it is necessary to stop operation of system and disconnect the system itself by switching over main switch to “OFF”.. n Cleaning of air inlet panel and remote controller (HRBU X Multi Liberty Models) WARNING •...
  • Page 175 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter n Cleaning of polypropylene net type filter (HRBU X Multi Liberty Models) After removing air inlet filter, remove polypropylene net type filter by detaching it from Unit’s body or from bottom of inlet plenum.
  • Page 176 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 2. Indoor Units DC Inverter n If you foresee not using the system for a long time Operate the Indoor Unit in “Fan” mode for at least 2 hours, in order to remove residual humidity inside it.
  • Page 177 Multi Liberty Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Units & Troubleshooting DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter DC Inverter Section 3: OUTDOOR UNITS & TROUBLESHOOTING Table of Contents 3.1 SPECIFICATIONS OF MULTI LIBERTY OUTDOOR UNITS ............OUT-2 3.2 TROUBLESHOOTING ......................

  • Page 178: Outdoor Units & Troubleshooting

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter 3. OUTDOOR UNITS & TROUBLESHOOTING 3.1 SPECIFICATIONS OF MULTI LIBERTY OUTDOOR UNITS 3.1.1 Technical Specifications of HCKU 406 Outdoor Unit X2 (Dual) Model name HCKU 406 X2 Power supply V-Ph-Hz 220~240-1-50...
  • Page 179 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter 3.1.2 Technical Specifications of HCKU 536 Outdoor Unit X2 (Dual) Model name HCKU 536 X2 Power supply V-Ph-Hz 220~240-1-50 Capacity 5.30 (1.40 ~ 6.66) Power input Cooling 1.570 (0.41 ~ 2.16) Running current...
  • Page 180 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter 3.1.3 Technical Specifications of HCKU 606 Outdoor Unit X3 (Triple) Model name HCKU 606 X3 Power supply V-Ph-Hz 220~240-1-50 Capacity 6.00 (1.56 ~ 8.93) Power input Cooling 1.798 (0.53 ~ 3.03) Running current...
  • Page 181 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter 3.1.4 Technical Specifications of HCKU 806 Outdoor Unit X3 (Triple) Model name HCKU 806 X3 Power supply V-Ph-Hz 220~240-1-50 Capacity 8.00 (1.38 ~ 9.86) Power input Cooling 2.350 (0.53 ~ 3.03) Running current...
  • Page 182 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter 3.1.5 Technical Specifications of HCKU 706 Outdoor Unit X4 (Poker) Model name HCKU 706 X4 Power supply V-Ph-Hz 220~240-1-50 Capacity 7.00 (1.38 ~ 10.11) Power input Cooling 1.986 (0.50 ~ 3.42) Running current...
  • Page 183 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter 3.1.6 Technical Specifications of HCKU 816 Outdoor Unit X4 (Poker) Model name HCKU 816 X4 Power supply V-Ph-Hz 220~240-1-50 Capacity 8.10 (1.38 ~ 11.09) Power input Cooling 2.483 (0.58 ~ 3.75) Running current...
  • Page 184 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter 3.1.7 Technical Specifications of HCKU 1066 Outdoor Unit X4 (Poker) Model name HCKU 1066 X4 Power supply V-Ph-Hz 220~240-1-50 Capacity 10.60 (1.27 ~ 14.59) Power input Cooling 3.350 (0.55 ~ 4.72) Running current...
  • Page 185 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter 3.2 Dimensions of Multi Liberty DC Inverter Outdoor Units HCKU 406 Outdoor Unit X2 Unit: mm OUT-9...
  • Page 186 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter HCKU 536 X2, HCKU 606 X3, HCKU 806 X3, HCKU 706 Outdoor Units X4 Unit: mm OUT-10...
  • Page 187 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter HCKU 816 Outdoor Unit X4 Unit: mm OUT-11...
  • Page 188 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter HCKU 1066 Outdoor Unit X4 Unit: mm 1075 OUT-12...
  • Page 189 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter 3.3 Installation & Service spaces for Multi Liberty DC Inverter Outdoor Units Unit: mm (Wall or obstacle) Air inlet > 300 Air inlet Maintenance space >...
  • Page 190 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter OUT-14...
  • Page 191 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter OUT-15...
  • Page 192 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter OUT-16...
  • Page 193 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter 3.5. Wiring Diagrams of Multi Liberty DC Inverter Outdoor Units HCKU 406 X2 Outdoor Unit OUT-17...
  • Page 194 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter HCKU 536 Outdoor Unit X2 OUT-18...
  • Page 195 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter HCKU 606 Outdoor Unit X3 OUT-19...
  • Page 196 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter HCKU 806 Outdoor Unit X3 OUT-20...
  • Page 197 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter HCKU 706 Outdoor Unit X4 OUT-21...
  • Page 198 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter HCKU 816 Outdoor Unit X4 R1815 OUT-22...
  • Page 199 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter HCKU 1066 Outdoor Unit X4 OUT-23...
  • Page 200 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter Wiring Diagram between Indoor Units and Outdoor Units Multi Liberty DC Inverter (By dedicated connectors (Units “A”, “B”, “C”, “D”) for “Plug”, on Outdoor Unit) OUT-24...
  • Page 201 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter “Plug” cable for Connection between per Indoor U. and Outdoor U. Multi Liberty DC Inverter (By dedicated connectors (Units “A”, “B”, “C”, “D”) for “Plug”, on Outdoor Unit) (TO INDOOR UNIT’S TERMINAL BLOCK) Unit : mm (TO OUTDOOR UNIT)
  • Page 202 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter 3.6 Noise level of Multi Liberty DC Inverter Outdoor Units Measurement conditions: 1m in front of Outdoor Unit Microphone Outdoor Unit 1.0 m Models Noise level at 1m, dB(A) HCKU 406 X2 HCKU 536 X2 HCKU 606 X3...
  • Page 203 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter Measurement conditions: 2.5m in front of Outdoor Unit Microphone Outdoor Unit 2.5 m Models Noise level at 2.5m, dB(A) HCKU 406 X2 HCKU 536 X2 HCKU 606 X3 HCKU 806 X3 HCKU 706 X4...
  • Page 204 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter 3.7 Operating conditions of Multi Liberty DC Inverter systems In Cooling mode Standard Indoor temperature (°C, W.B.) In Heating mode Standard Indoor temperature (°C, D.B.) OUT-28...
  • Page 205 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter 3.8 Capacity & Power Input in Heating mode of Multi Liberty DC Inverter Outdoor Units OUT-29...
  • Page 206 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter 3.9 Capacity curve and power consumption of Multi Liberty DC Inverter Outdoor Units Model: HCKU 406 Outdoor Unit X2 Operation in Heating mode Outdoor air temperature (°C) D.B. Test conditions: Indoor temperature = 20°C (B.S.) Number and capacity of connected Indoor Units = (2 x) 206X...
  • Page 207 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter Model: HCKU 536 Outdoor Unit X2 Operation in Heating mode Outdoor air temperature (°C) D.B. Test conditions: Indoor temperature = 20°C (D.B.) Number and capacity of connected Indoor Units = (2 x) 266X Setting of indoor fan speed = “High”...
  • Page 208 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter Model: HCKU 606 Outdoor Unit X3 Operation in Heating mode Outdoor air temperature (°C) D.B. Test conditions: Indoor temperature = 20°C (D.B.) Number and capacity of connected Indoor Units = (3 x) 206X Setting of indoor fan speed = “High”...
  • Page 209 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter Model: HCKU 806 Outdoor Unit X3 Operation in Heating mode Outdoor air temperature (°C) D.B. Test conditions: Indoor temperature = 20°C (D.B.) Number and capacity of connected Indoor Units = (3 x) 266X Setting of indoor fan speed = “High”...
  • Page 210 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter Model: HCKU 706 Outdoor Unit X4 Operation in Heating mode Outdoor air temperature (°C) D.B. Test conditions: Indoor temperature = 20°C (D.B.) Number and capacity of connected Indoor Units = (4 x) 206X Setting of indoor fan speed = “High”...
  • Page 211 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter Model: HCKU 816 Outdoor Unit X4 Operation in Heating mode Outdoor air temperature (°C) D.B. Test conditions: Indoor temperature = 20°C (D.B.) Number and capacity of connected Indoor Units = (4 x) 206X Setting of indoor fan speed = “High”...
  • Page 212 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter Model: HCKU 1066 Outdoor Unit X4 Operation in Heating mode Outdoor air temperature (°C) D.B. Test conditions: Indoor temperature = 20°C (D.B.) Number and capacity of connected Indoor Units = (4 x) 266X Setting of indoor fan speed = “High”...

  • Page 213: Troubleshooting

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter 3.2 TROUBLESHOOTING The following table shows a series of problems and their possible reasons and solutions. Please carry out the following checks before contacting the Authorized Technical Service. CONDITION CAUSES OR CHECK POINTS •...

  • Page 214: Error Codes Displayed On Indoor Units

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter 3.2.1 ERROR CODES DISPLAYED ON INDOOR UNITS • Error Codes on Display of Multi Liberty HKEU X Indoor Units Digital Display Digital Display 1) In case of whatever malfunction, the Digital Display (see above) shows the corresponding Error Code or Protection Code.
  • Page 215 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting for Error Codes shown on the Display of Multi Liberty HKEU X Indoor Unit Error Codes on Indoor Unit Outline of malfunction EEPROM malfunction Malfunction of Indoor Unit’s EEPROM or PCB.
  • Page 216 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter •Troubleshooting for Error Codes shown on Display of Multi Liberty HKEU X Indoor Unit Error Code on Indoor Unit Outline of malfunction Communication error between Indoor Unit ↔ Outdoor Unit Communication error between Indoor Unit ↔...
  • Page 217 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting for Error Codes shown on Display of Multi Liberty HKEU X Indoor Units Error Code on Indoor Unit Outline of malfunction Transmission error of data sequence along the signal line Transmission error of data sequence along the signal line.
  • Page 218 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting for Error Codes shown on Display of Multi Liberty HKEU X Indoor Units Error Code on Indoor Unit Outline of malfunction Malfunction of fan motor (beyond control) on Indoor Unit Malfunction of fan motor (beyond control) on Indoor Unit.
  • Page 219 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting for Error Codes shown on Display of Multi Liberty HKEU X Indoor Units Error Code on Indoor Unit Outline of malfunction Malfunction of temperature sensor (broken or in short-circuit) on O.U. Malfunction of temperature sensor T3 (heat exchanger’s temperature) or temperature sensor T4 (outdoor air temperature) on...
  • Page 220 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting for Error Codes shown on Display on Multi Liberty HKEU X Indoor Units Error on Indoor Unit Outline of malfunction Malfunction of T1 sensor or T2 sensor on Indoor Unit Malfunction of temperature sensor T1 (indoor temperature) or temperature sensor T2 (heat exchanger’s temperature) on Indoor Unit.
  • Page 221 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting for Protection Codes shown on Display of Multi Liberty HKEU X Indoor Units Protection Code on Indoor Unit Outline of Protection function Overcurrent error on Outdoor Unit’s Inverter Module Overcurrent error on Outdoor Unit’s IPM.
  • Page 222 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting for Protection Codes shown on Display of Multi Liberty HKEU X Indoor Units Protection Code on Indoor Unit Outline of Protection function Too low/too high power supply voltage on O.U. Too low/too high power supply voltage on Outdoor Unit.
  • Page 223 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting for Protection Codes shown on Display of Multi Liberty HKEU X Indoor Units Protection Code on Indoor Unit Outline of Protection function Intervention of compressor’s thermal protection. [Excluded Outdoor Units HCKU 816 X4, HCKU1066 X4] If temperature detected on compressor is higher than 120°C, the system is stopped by the intervention of "...
  • Page 224 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting for Protection Codes shown on Display of Multi Liberty of HKEU X Indoor Units Protection Code on Indoor Unit Outline of Protection function Protection for compressor overcurrent Intervention of protection for compressor’s overcurrent.
  • Page 225 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting for Protection Codes shown on Display of Multi Liberty HKEU X Indoor Units Protection Code on Indoor Unit Outline of Protection function Intervention of a protection function of Inverter Module Check connections on P4(-), P2(+) connectors of Outdoor Unit’s main PCB: are they OK? Is power supply voltage (measure it) on Outdoor Unit is 220-240V?
  • Page 226 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting for Protection Codes shown on Display of Multi Liberty HKEU X Indoor Unit Protection Code on Indoor Unit Outline of Protection function Operation mode in conflict with operation mode of other Indoor Units On Indoor Units of the same system, have operation modes not compatible among them been set (see the Table below)? On the Indoor Units of the same system, operation modes must be compatible...
  • Page 227 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting by LED Indicators of Multi Liberty (HTFU, HSFU, HRBU) X Indoor Units MANUAL • HTFU X, HRBU X Models OPERATION TIMER DEF./FAN ALARM OPERATION TIMER DEF./FAN...
  • Page 228 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting by LED indicators of Multi Liberty (HTFU, HSFU, HRBU) X Indoor Units Outline of malfunction OPERATION TIMER DEF./FAN ALARM Malfunction of T1 sensor (room temperature) on Indoor Unit Flashing Malfunction of temperature sensor T1 (indoor temperature) on Indoor Unit.
  • Page 229 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting by LED indicators of Multi Liberty (HTFU, HSFU, HRBU) X Indoor Units OPERATION TIMER DEF./FAN ALARM Outline of malfunction Malfunction of T2 sensor (heat exchanger) on Indoor Unit Flashing Malfunction of temperature sensor T2 (heat exchanger’s temperature sensor) on Indoor...
  • Page 230 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting by LED indicators of Multi Liberty (HTFU, HSFU, HRBU) X Indoor Units OPERATION TIMER DEF./FAN ALARM Outline of malfunction Flashing Communication error between Indoor Unit ↔ Outdoor Unit Communication error between Indoor Unit ↔...
  • Page 231 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting by LED indicators of Multi Liberty (HTFU, HSFU, HRBU) X Indoor Units Outline of malfunction OPERATION TIMER DEF./FAN. ALARM Malfunction on drain condensate system [HTFU X I.U. only] Flashing “ALARM”...
  • Page 232 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting by LED indicators of Multi Liberty (HTFU, HSFU, HRBU) X Indoor Units OPERATION TIMER DEF./FAN ALARM Descrizione dell’anomalia Malfunction of EEPROM on Indoor Unit Flashing Flashing Malfunction of Indoor Unit’s EEPROM or PCB.
  • Page 233 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting by LED indicators of Multi Liberty (HTFU, HSFU, HRBU) X Indoor Unit OPERATION TIMER DEF./FAN ALARM Outline of malfunction Intervention of a protection on Inverter Module (IPM) Flashing Check the connections on P4(-), P2(+) connectors of Outdoor Unit’s main PCB: are they OK?
  • Page 234 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting by LED indicators of Multi Liberty (HTFU, HSFU, HRBU) X Indoor Units Outline of malfunction OPERATION TIMER DEF./FAN ALARM Malfunction of temp. sensor (broken or in short-circuit) on O.U. Flashing Malfunction of T3 temperature sensor (heat exchanger’s...
  • Page 235 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting by LED indicators of Multi Liberty (HTFU, HSFU, HRBU) X Indoor Units Outline of malfunction OPERATION TIMER DEF./FAN ALARM Too low/too high power supply voltage on Outdoor Unit. Flashing Error of power supply voltage on Outdoor Unit.
  • Page 236 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting by LED indicators of Multi Liberty (HTFU, HSFU, HRBU) X Indoor Units Outline of malfunction OPERATION TIMER DEF./FAN ALARM Intervention of compressor’s thermal protection. Flashing [Excluded Outdoor Units HCKU 816 X4, HCKU1066 X4] If temperature detected on compressor is higher than 120°C, the system is stopped for intervention of thermal...
  • Page 237 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting by LED indicators of Multi Liberty (HTFU, HSFU, HRBU) X Indoor Units OPERATION TIMER DEF./FAN ALARM Outline of malfunction Operation mode in conflict with operarion mode of other Indoor Units Flashing On Indoor Units of the same system, have operation modes not compatible among them been set (see the Table below)?
  • Page 238 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting by LED indicators of Multi Liberty (HTFU, HSFU, HRBU) X Indoor Units OPERATION TIMER DEF./FAN ALARM Outline of malfunction Protection for compressor overcurrent Flashing Intervention of protection for compressor’s overcurrent.
  • Page 239 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting by LED indicators on Multi Liberty (HFIU 266 X, 356 X) Indoor Units “OPERATION” LED “PRE-DEF.” LED “TIMER” LED LED Display on Indoor Units 1) In case of operation malfunctions, the codified flashing of LED indicators on display allows to explain the cause of malfunction, thus making easier the troubleshooting.
  • Page 240 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting by LED indicators of Multi Liberty (HFIU 266 X, 356 X) Indoor Units OPERATION TIMER PRE-DEF. Outline of malfunction Malfunction of T1 sensor (room temperature) on Indoor Unit Flashing Malfunction of temperature sensor T1 (indoor temperature) on Indoor Unit.
  • Page 241 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting by LED indicators of Multi Liberty (HFIU 266 X, 356 X) Indoor Units OPERATION TIMER PRE-DEF. Outline of malfunction Malfunction of T2 sensor (heat exchanger’s temp.) on Indoor Unit Flashing Malfunction of temperature sensor T2 (heat exchanger’s temperature sensor) on Indoor...
  • Page 242 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting by LED indicators of Multi Liberty (HFIU 266 X, 356 X) Indoor Units OPERATION TIMER PRE-DEF. Outline of malfunction Flashing Communication error between Indoor Unit ↔ Outdoor Unit Communication error between Indoor Unit ↔...
  • Page 243 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting by LED indicators of Multi Liberty (HFIU 266 X, 356 X) Indoor Units OPERATION TIMER PRE-DEF. Outline of malfunction Faulty EEPROM on Indoor Unit Flashing Flashing Malfunction of Indoor Unit’s EEPROM or PCB.
  • Page 244 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting by LED indicators of Multi Liberty (HFIU 266 X, 356 X) Indoor Units OPERATION TIMER PRE-DEF. Outline of malfunction Intervention of a protection on Inverter Module (IPM) Flashing Flashing Check the connections on P4(-), P2(+) connectors of Outdoor Unit’s main PCB:...
  • Page 245 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting by LED indicators of Multi Liberty (HFIU 266 X, 356 X) Indoor Units OPERATION TIMER PRE-DEF. Outline of malfunction Flashing Flashing Flashing Malfunction of temp. sensor (broken or in short-circuit) on O.U. Malfunction of T3 temperature sensor (heat exchanger’s temperature)
  • Page 246 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting by LED indicators of Multi Liberty (HFIU 266 X, 356 X) Indoor Units OPERATION TIMER PRE-DEF. Outline of malfunction Intervention of compressor’s thermal protection. Flashing [Excluded Outdoor Units HCKU 816 X4, HCKU1066 X4] If temperature detected on compressor is higher than 120°C, the system is stopped for intervention of thermal...
  • Page 247 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting by LED indicators of Multi Liberty (HFIU 266 X, 356 X) Indoor Units OPERATION TIMER PRE-DEF. Outline of malfunction Operation mode in conflict with operation mode of other I.U. of system Flashing On Indoor Units of the same system, have operation modes not compatible among them been set (see the Table below)?
  • Page 248 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting by LED indicators of Multi Liberty HFIU 536 X Indoor Unit “OPERATION” LED “PRE-DEF.” LED “TIMER” LED LED Display on Indoor Units 1) In case of operation malfunctions, the codified flashing of LED indicators on display allows to explain the cause of malfunction, thus making easier the troubleshooting.
  • Page 249 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting by LED indicators of Multi Liberty HFIU 536 X Indoor Unit OPERATION TIMER PRE-DEF. Outline of malfunction Malfunction of T1 sensor (room temperature) on Indoor Unit Flashing Flashing Malfunction of temperature sensor T1 (indoor...
  • Page 250 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting by LED indicators of Multi Liberty HFIU 536 X Indoor Unit OPERATION TIMER PRE-DEF. Outline of malfunction Communication error between Indoor Unit ↔ Outdoor Unit Flashing Communication error between Indoor Unit ↔...
  • Page 251 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting by LED indicators of Multi Liberty HFIU 536 X Indoor Unit OPERATION TIMER PRE-DEF. Outline of malfunction Faulty EEPROM on Indoor Unit Flashing Flashing Flashing Malfunction of Indoor Unit’s EEPROM or PCB.
  • Page 252 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting by LED indicators of Multi Liberty HFIU 536 X Indoor Unit OPERATION TIMER PRE-DEF. Outline of malfunction Malfunction on Outdoor Unit (see display on Outdoor Unit’s PCB) Flashing Malfunction on Outdoor Unit.
  • Page 253 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting by LED indicators of Multi Liberty HFIU 536 X Indoor Unit OPERATION TIMER PRE-DEF. Outline of malfunction Flashing Flashing Operation mode in conflict with operation mode of other I.U. On Indoor Units of the same system, have operation modes not compatible among them been set (see the Table below)? On the Indoor Units of the same system, operation modes must be compatible...

  • Page 254: Error/Protection Codes Displayed On Outdoor Units

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter 3.2.2 ERROR/PROTECTION CODES DISPLAYED ON OUTDOOR UNITS • Error Codes shown by 2-digit LED Display (Multi LIberty Outdoor Unit’s PCB): Outline of malfunction Error Code Error of parameters in EEPROM (Indoor Units).
  • Page 255 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting flowcharts, referred to Error Codes displayed on Outdoor Unit: Error Code on Outdoor Unit Outline of malfunction Error of EEPROM parameters (Indoor Unit) The display shows “E0”.
  • Page 256 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting flowchart, referred to Error Codes displayed on Outdoor Unit: Error Code on Outdoor Unit Outline of malfunction Malfunction of temperature sensor, Gas side, on Indoor Unit “A” Is Gas side temperature sensor on Indoor Unit “A”...
  • Page 257 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting flowcharts, referred to Error Codes displayed on Outdoor Unit: Error Code on Outdoor Unit Outline of malfunction Malfunction of temperature sensor, Gas side, on Indoor Unit “C” Is Gas side temperature sensor on Indoor Unit “C”...
  • Page 258 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting flowcharts, referred to Error Codes displayed on Outdoor Unit: Error Code on Outdoor Unit Outline of malfunction Error of voltage to compressor Check power supply voltage. If the detected value is of about 220V, try to disconnect the system from power supply and connect it again after some minutes (reset of power supply).
  • Page 259 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting flowcharts, referred to Error Codes displayed on Outdoor Unit: Error Code on Outdoor Unit Outline of malfunction Communication error on Outdoor Unit’s PCB Outdoor Unit’s display (PCB) shows Error Code “E7”.
  • Page 260 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting flowcharts, referred to Protection Codes displayed on Outdoor Unit: Protection Code on Outdoor Unit Outline of protection function Protection for compressor’s discharge overtemperature [All Models of Outdoor Units] If detected temperature on compressor discharge is higher than 115°C for at least 10 seconds, the system is "...
  • Page 261 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting flowcharts, referred to Protection Codes displayed on Outdoor Unit: Protection Code on Outdoor Unit Outline of protection function Intervention of thermal protection for compressor overtemperature [Excluded Models HCKU 816 X4, HCKU 1066 X4] If temperature detected on compressor is higher than 120°C, the system is stopped for the intervention of...
  • Page 262 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting flowcharts, referred to Protection Codes displayed on Outdoor Unit: Protection Code on Outdoor Unit Outline of protectio function Intervention of high pressure protection [Models HCKU 816 X4, HCKU 1066 X4 only] (*) Invervention value of H_PRO: 3.3Mpa The display shows “P1”.
  • Page 263 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting flowcharts, referred to Protection Codes displayed on Outdoor Unit: Outline of protection function Protection Code on Outdoor Unit Intervention of low pressure protection [Models HCKU 816 X4, HCKU 1066 X4 only] (*) Intervention value of L_PRO: 0.03Mpa The display shows “P2”.
  • Page 264 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting flowcharts, referred to Protection Codes displayed on Outdoor Unit: Protection Code on Outdoor Unit Outline of protection function Protection for compressor overcurrent The display shows “P3”. Intervention of protection for compressor overcurrent.
  • Page 265 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting flowcharts, referred to Protection Codes displayed on Outdoor Unit: Protection Code on Outdoor Unit Outline of protection function Intervention of a protection function on Inverter Module The display shows “P4”.
  • Page 266 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting flowcharts, referred to Protection Codes displayed on Outdoor Unit: Protection Code on Outdoor Unit Outline of protection function Protection for outdoor low temperature, in Heating mode "...
  • Page 267 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter • Troubleshooting flowcharts, referred to Protection Codes displayed on Outdoor Unit: Protection on Outdoor Unit Outline of protection function Overtemperature of Outdoor Unit’s heat exchanger (in Cooling mode) If temperature detected on oudoor heat exchanger is higher than 65°C, system is stopped.

  • Page 268: Electrical Specifications Of Some Components

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter 3.3 ELECTRICAL SPECIFICATIONS OF SOME COMPONENTS " Resistance values of temperature sensors (thermistors) Temperature sensors on system are the following: • T1 = Indoor temperature sensor. •...
  • Page 269 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter " Voltage values on Rectifier (1 & 2), on Inverter Module and other components a) Rectifier (1 & 2). Input: 220-230V (AC). Output: 310V (AC) b) Inverter Module (3-Phase).

  • Page 270: R-T Features Of Temperature Sensors

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter 3.4 R-T FEATURES OF TEMPERATURE SENSORS Room temperature sensors. Heat exchangers & refrigerant pipings temperature sensors. Temp. Resistance (kΩ) Resistance Tolerance (%) Temperature Tolerance (%) °C NORM 116.539...
  • Page 271 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter Room temperature sensors. Heat exchangers & refrigerant pipings temperature sensors. Temp. Resistance (kΩ) Resistance Tolerance (%) Temperature Tolerance (%) °C NORM 9.848 9.551 9.255 3.11 3.10 0.69 0.66...
  • Page 272 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter Room temperature sensors. Heat exchangers & refrigerant pipings sensors. Temp. Resistance (kΩ) Resistance Tolerance (%) Temperature Tolerance (%) °C NORM 1.514 1.416 1.321 6.94 6.71 1.98 1.94 1.463...
  • Page 273 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting DC Inverter Discharge pipe temperature sensor. Temp. (°C) Resist. (kΩ) Temp. (°C) Resist. (kΩ) Temp. (°C) Resist. (kΩ) Temp. (°C) Resist. (kΩ) 542.7 68.66 13.59 3.702 511.9 65.62 13.11 3.595...
  • Page 274 Multi Liberty Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Indicazioni per l’Installazione DUAL, TRIPLE, POKER DC Inverter : 4. Informazioni di Installazione DC Inverter DC Inverter Section 4: INSTALLATION Table of Contents 4. INSTALLATION ..........................INS-2 4.1 CHECKS AND PRELIMINARY OPERATIONS ................ INS-4 4.2 INSTALLATION OF HKEU (206, 356, 356, 536) X INDOOR UNITS ........

  • Page 275: Installation

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 4. INSTALLATION All steps of installation must be carried out according to National and local laws and rules. The following directions do not meet all possible circumstances of installation. For more information or in case of particular problems, please contact the local Distributor.
  • Page 276 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter CAUTION Execute proper grounding. Do not connect the ground wire to a gas pipe, water pipe, lighting rod or ¦ telephone ground wire. Improper placement of ground wires can result in electric shock. The installation of an earth leakage breaker is necessary, specific for Inverter appliances.

  • Page 277: Checks And Preliminary Operations

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 4.1 CHECKS AND PRELIMINARY OPERATIONS ¦Before starting the installation work, be sure to have all necessary tools and materials for carrying out all different phases of procedures. ¦Check if there are all accessories sold together with Units, and then buy on site all necessary accessories and components which are not sold with the appliance.
  • Page 278 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter R410A Refrigerant Specifications Working pressures of R410A refrigerant are about 1.6 times higher than those of R22 refrigerant. For systems with R410A, it is required the use of compressors having polyester synthetic lubrication oil (POE). Mineral lubrication oil is not compatible with refrigerant circuits with R410A.
  • Page 279 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter ■ Refrigerant pipings 1. Use refrigerant pipings and materials designed for R410A refrigerant. 2. For min. thickness of refrigerant pipings, refer to the following table. Pipings’ diameter Φ 6.35mm Φ...

  • Page 280: Installation Of Hkeu (206, 356, 356, 536) X Indoor Units

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 4.2 INSTALLATION OF HKEU (206, 356, 356, 536) X INDOOR UNITS Before starting the air conditioner, please read carefully the information in this "USER'S MANUAL". The User's Manual contains very important suggestions relatied to installation, operation and maintenance of the air conditioner and concerning your personal safety.
  • Page 281 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter • Strictly observe the instructions provided in this Service Manual. • The air conditioning system contains inside its circuit a refrigerant gas (R410A) under pressure. Never disconnect for any reason refrigerant pipings before recovering refrigerant first.
  • Page 282 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter INSTALLATION  Never try to install this system by yourself, i.e. without the support of Technical Personnel. Never try to reapir the system by yourself. The Units’ components can be reached only by opening or removing the covering panels, and this involves exposure to high voltage.
  • Page 283 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter CAUTION Ventilation should be operated when using at Do not use sprays near the air conditioner and the same time the air conditioner and gas burners. do not spray anything towards the appliance. Insufficient ventilation may cause lack of oxygen.
  • Page 284 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter (1) Selection of installation site for HKEU (206, 266, 356, 536) X Indoor Units n Install Indoor Units in a place having the following requirements: - The fixing surface must be able to support the Unit’s weight. - Material features of wall must not cause vibrations.
  • Page 285 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter Examples of piping flaring: Correct Wrong Lean Crack Partial Too outside Damage of flare (3) Fixing of installation plate The surface to which fixing plate will be installed must be installed must be perfectly vertical and as regular as possible.
  • Page 286 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter HKEU 536 X Model More than 150mm from ceiling Indoor Unit’s shape Fixing plate More than 120mm More than 120mm from wall from wall Ø65mm hole, left side Ø65mm hole, right side (for pipings) (for pipings)
  • Page 287 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter Rear-left direction Left-side direction Unit’s shape Refrigerant pipe fittings Note: In case of right-side or left-side outlet of refrigerant pipings, bend refrigerant pipe fittings so as to keep a distance not higher than 43mm between refrigerant pipe fittings and wall, as it is shown in the Wall Figure.
  • Page 288 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter Keep in mind the following: 1. Wiring between each Indoor Unit and the Outdoor Unit, and of drain hose, must be taped togwther with refrigerant pipings, by using adhesive tape. 2.
  • Page 289 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter Higher than specified Trap The drain hose tip is in water The connection of drain hose is on right side of each Indoor Unit only. If it is necessary to extend drain hose, use a pipe in semirigid plastic (PVC) of VP20 type, to buy separately.

  • Page 290: Outdoor Unit

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter Basic information on wiring for Multi Liberty DC Inverter systems • Power supply (on Outdoor Unit): - 1-Phase, 220~240V, 50 Hz. - Power source limitations: ±10% as regards rating value. - Voltage at starting: 85% as regards rating value.
  • Page 291 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter (10) Definitive fixing of Indoor Units 1. Remove the spacer from Indoor Unit’s back. 2. Suspend each Indoor Unit to upper hooks of fixing plate and move Unit left side and right side to check if it is properly fixed.

  • Page 292: Installation Of Htfu (206, 356, 356, 536) X Indoor Units

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 4.3 INSTALLATION OF HTFU (206, 356, 356, 536) X INDOOR UNITS Before starting the air conditioner, please read carefully the information in this "USER'S MANUAL". The User's Manual contains very important suggestions relatied to installation, operation and maintenance of the air conditioner and concerning your personal safety.
  • Page 293 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter • Strictly observe the instructions provided in this Service Manual. • The air conditioning system contains inside its circuit a refrigerant gas (R410A) under pressure. Never disconnect for any reason refrigerant pipings before recovering refrigerant first.
  • Page 294 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter INSTALLATION  Never try to install this system by yourself, i.e. without the support of Technical Personnel. Never try to reapir the system by yourself. The Units’ components can be reached only by opening or removing the covering panels, and this involves exposure to high voltage.
  • Page 295 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter CAUTION Ventilation should be operated when using at the Do not use sprays near the air conditioner and same time the air conditioner and gas burners. do not spray anything towards the appliance. Insufficient ventilation may cause lack of oxygen.
  • Page 296 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter (1) Selection of installation site for HTFU (206, 266, 356, 536) X Indoor Units n Install Indoor Units in a place having the following requirements: - The fixing surface must be able to support the Unit’s weight. - Material features of wall must not cause vibrations.
  • Page 297 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter (2) Transport of Indoor Unit 1. Decide the correct carry-in path. 2. Move this Unit as originally packaged as possible. 3. If the air conditioner is installed on a metal part of the building, it must be electrically insulated according to the relevant electrical code.
  • Page 298 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter brackets (Ø12mm) between each bar and contiguous bars, so as to make an external square structure. c) Please adjust scrupulously Indoor Unit’s height, by intervention on lower hexangular nut of each threaded bar, so as to ensure the best balance of Indoor Unit’s body - after Indoor Unit has been suspended to bars by its square brackets.
  • Page 299 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter (4) Installation of decorative panel on Indoor Unit Cautions: m Never put the panel face down on floor or against the wall, or near object or materials which may damage its surface.
  • Page 300 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter c) Temporarily fix the decorative panel to Indoor Unit’s body, by screwing for about 5 mm the 4 providec bolts M5 x 16, after inserting the corresponding washer on each bolt. d) Horizontally adjust the position of the decorative panel, so as to centre it as regards the hole cut in the false ceiling.
  • Page 301 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter (4.3) Reinstall the air inlet grille on the decorative panel m Relocate the grille to the panel by side of clamps which allow the grille to sway. m Connect the connector of flap motor to the corresponding connector from Indoor Unit’s electric box. m To definitively fix the grille to the panel, carry out the procedure in reversed order as regards that previously described for removing the grille itself.
  • Page 302 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter (7) Position of drain hose a) Check if drain piping (VP20) has a min. slope of at least 1/100 along all its path. b) Avoid to carry out pipings’ portions with inverted slope, traps or air vents along the piping itself. c) The end of piping must not be immersed, nor must be conveyed to manholes, hydroseparators of toxic substances, to avoid that bad smells or vapors of noxious or toxic substances may enter the installation room by going up along the drain piping.
  • Page 303 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter Basic information on wiring for Multi Liberty DC Inverter systems • Power supply (on Outdoor Unit): - 1-Phase, 220~240V, 50 Hz. - Power source limitations: ±10% as regards rating value. - Voltage at starting: 85% as regards rating value.
  • Page 304 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter (9) Final checks 1. On Outdoor Unit, check the correspondence between wiring and piping connections for each Indoor Unit. 2. Check way and laying of drain hose and electrical wiring for each Indoor Unit. 3.

  • Page 305: Installation Of Hfiu (266, 356, 536) X Indoor Units

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 4.4 INSTALLATION OF HFIU (266, 356, 536) X INDOOR UNITS Before starting the air conditioner, please read carefully the information in this "USER'S MANUAL". The User's Manual contains very important suggestions relatied to installation, operation and maintenance of the air conditioner and concerning your personal safety.
  • Page 306 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter • Strictly observe the instructions provided in this Service Manual. • The air conditioning system contains inside its circuit a refrigerant gas (R410A) under pressure. Never disconnect for any reason refrigerant pipings before recovering refrigerant first.
  • Page 307 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter INSTALLATION  Never try to install this system by yourself, i.e. without the support of Technical Personnel. Never try to reapir the system by yourself. The Units’ components can be reached only by opening or removing the covering panels, and this involves exposure to high voltage.
  • Page 308 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter CAUTION Ventilation should be operated when using at Do not use sprays near the air conditioner and the same time the air conditioner and gas burners. do not spray anything towards the appliance. Insufficient ventilation may cause lack of oxygen.
  • Page 309 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 1. Selection of installation site & position 1.1 Requirements for Indoor Unit’s installation 1) Spaces for installation and maintenance must be available. 2) There must be no obstacles on Indoor Unit’s air outlet and inlet, nor air drafts coming from outdoor must interfere with Indoor Unit’s operation.
  • Page 310 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 2. Installation of Indoor Unit 2.1 Service spaces Install the Indoor Unit in a place having the following requirements: ■ Suitable free spaces for installation and maintenance of Unit must be available (see the following Figure). Unit: mm Wall or obstacle 100 or more...
  • Page 311 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 2.2 Fixing of Indoor Unit ■ Fix installation brackets to wall, by using screw anchors. Bracket Screw anchor Washer < 6mm ■ Suspend Indoor Unit to installation brackets previously set. Unit’s bottom can be placed on the floor, as it is shown in the Figure below, or it can be installed at medium height from floor.

  • Page 312: Connection Of Refrigerant Pipings

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 3. Connection of refrigerant pipings Please check if splitting distance (also considering the number of bends on pipings) and splitting level distance between Indoor Units and the Outdoor Unit respect limitations indicated by the Manufacturer. 3.1 Access to refrigerant connections of HFIU (266, 356, 536) X Indoor Units 1) Slide the two switches of frontal grille toward the middle, as it is shown in Figure 3.1.1.
  • Page 313 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 3.2 Procedure for connection of refrigerant pipings Caution: Connection of refrigerant pipings must be carried out by Authorized Technical Service, in accordance with curnent regulations as fas as refrigerant installations are concerned. Prevent water, humidity, polluting materials and foreign matters from entering pipins’...
  • Page 314 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 3.4 Carry out connection of refrigerant pipings, first on Indoor Unit then on Outdoor Unit. If a pipe bender is not available, please observe min. radius of curvature shown on Figure below. In case of manual bending of pipings, please observe min.

  • Page 315: Drain Piping

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 4. Drain piping 4.1 Installation of drain pipe for Indoor Unit Caution: 1) Condensate drain piping must be properly insulated by close cells’ insulating material of suitable thickness, near connection point on Indoor Unit and on the first portion (about 1m).
  • Page 316 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 5. Wiring 5.1 General cautions 1) Electric part of installation must be carried out in accordance with national and local current regulations as far as electric installation are concerned. 2) These systems require one power supply line, specific to the system only.
  • Page 317 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter Room temperature sensor holder Figure 5.2.3 Figure 5.2.4 5) Always use wire clamps on Indoor Units, to avoid that any traction applied to connection cables between Indoor and Outdoor Units could be transmitted to terminal blocks’ contacts or to connectors. For proper use of wire clamps, please refer to the Figure below.
  • Page 318 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter Basic information on wiring for Multi Liberty DC Inverter systems • Power supply (on Outdoor Unit): - 1-Phase, 220~240V, 50 Hz. - Power source limitations: ±10% as regards rating value. - Voltage at starting: 85% as regards rating value.
  • Page 319 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 6. Test 1. Test procedure of system must be carried out only after installation has been completed in all its parts (electric part and refrigerant part). 2. Before carrying out the Test, please check the following: •...

  • Page 320: Installation Of Hsfu (356, 536) X Indoor Units

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 4.5 INSTALLATION OF HSFU (356, 536) X INDOOR UNITS Before starting the air conditioner, please read carefully the information in this "USER'S MANUAL". The User's Manual contains very important suggestions relatied to installation, operation and maintenance of the air conditioner and concerning your personal safety.
  • Page 321 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter • Strictly observe the instructions provided in this Service Manual. • The air conditioning system contains inside its circuit a refrigerant gas (R410A) under pressure. Never disconnect for any reason refrigerant pipings before recovering refrigerant first.
  • Page 322 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter INSTALLATION  Never try to install this system by yourself, i.e. without the support of Technical Personnel. Never try to reapir the system by yourself. The Units’ components can be reached only by opening or removing the covering panels, and this involves exposure to high voltage.
  • Page 323 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter CAUTION Ventilation should be operated when using at Do not use sprays near the air conditioner and the same time the air conditioner and gas burners. do not spray anything towards the appliance. Insufficient ventilation may cause lack of oxygen.
  • Page 324 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 1. Selection of installation site & position 1.1 Requirements for Indoor Unit’s installation 1) Spaces for installation and maintenance must be available. 2) There must be no obstacles on Indoor Unit’s air outlet and inlet, nor air drafts coming from outdoor must interfere with Indoor Unit’s operation.
  • Page 325 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 2. Check of Indoor Unit after transport and following removal Check if Indoor Unit has not suffered damages by transport. The packaging must be intact. Otherwise, logde a complaint to transporter. During removal, take care to the following symbols on packaging.
  • Page 326 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter Suitable spaces must be available, equal or wider as regards those indicated on the previous Figure. If needed, strengthen the surface where fixing devices must be inserted. After choosing Indoor Unit’s installation position, arrange refrigerant piping connections, drain connection and wiring before Unit’s fixing.
  • Page 327 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 2. Wall installation of HSFU 356 X, 536 X Indoor Units Fixing hooks Flare connections (Gas side, Liquid side) Electric box Drain connection Fig. 3.2.7 1. As it is shown in Fig. 3.2.8, install fixing brackets to wall by using screw anchors. Fixing bracket Screw anchor Washer...
  • Page 328 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter Side panel Air inlet grille Fig. 3.2.10 2. Fix installation brackets on suspension threaded bolts (see Fig. 3.2.11). Fix bolts on Indoor Unit to install brackets on Unit’s body (see Fig.
  • Page 329 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter Unit: mm TOP VIEW LEFT SIDE VIEW Fig. 3.2.14 INS-56...
  • Page 330 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 4. Connection of refrigerant pipings Check if splitting distance (also considering the number of bends on pipings) and splitting level distance between Indoor Units and Outdoor Unit respect limitations indicated by the Manufacturer. 4.1 Procedure for connection of refrigerant pipings Caution: Connection of refrigerant pipings must be carried out by Authorized Technical Service, in accordance with...
  • Page 331 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 4.3 Carry out connection of refrigerant pipings first on Indoor Unit, then on Outdoor Unit. Flare connections (Gas side, Liquid side) Position of flare connections and of drain connection. Drain connection If a pipe bender is not available, please observe min.
  • Page 332 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 5. Drain piping 5.1 Installation of drain pipe for Indoor Unit Caution: 1) Condensate drain piping must be properly insulated by close cells’ insulating material of suitable thickness, near connection point on Indoor Unit and on the first portion (about 1m).
  • Page 333 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 6. Wiring 6.1 General cautions 1) Electric part of installation must be carried out in accordance with national and local current regulations as far as electric installation are concerned. 2) These systems require one power supply line, specific to the system only.
  • Page 334 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter Basic information on wiring for Multi Liberty DC Inverter systems • Power supply (on Outdoor Unit): - 1-Phase, 220~240V, 50 Hz. - Power source limitations: ±10% as regards rating value. - Voltage at starting: 85% as regards rating value.
  • Page 335 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 7. Test 1. Test procedure of system must be carried out only after installation has been completed in all its parts (electric part and refrigerant part). 2. Before carrying out the Test, please check the following: •...

  • Page 336: Installation Of Hrbu (206, 266, 356, 536) X Indoor Units

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 4.6 INSTALLATION OF HRBU (206, 266, 356, 536) X INDOOR UNITS Before starting the air conditioner, please read carefully the information in this "USER'S MANUAL". The User's Manual contains very important suggestions relatied to installation, operation and maintenance of the air conditioner and concerning your personal safety.
  • Page 337 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter • Strictly observe the instructions provided in this Service Manual. • The air conditioning system contains inside its circuit a refrigerant gas (R410A) under pressure. Never disconnect for any reason refrigerant pipings before recovering refrigerant first.
  • Page 338 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter INSTALLATION  Never try to install this system by yourself, i.e. without the support of Technical Personnel. Never try to reapir the system by yourself. The Units’ components can be reached only by opening or removing the covering panels, and this involves exposure to high voltage.
  • Page 339 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter CAUTION Ventilation should be operated when using at the Do not use sprays near the air conditioner and same time the air conditioner and gas burners. do not spray anything towards the appliance. Insufficient ventilation may cause lack of oxygen.
  • Page 340 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 1. Selection of installation site & position 1.1 Requirements for Indoor Unit’s installation 1) Spaces for installation and maintenance must be available. 2) There must be no obstacles on Indoor Unit’s air outlet and inlet, nor air drafts coming from outdoor must interfere with Indoor Unit’s operation.
  • Page 341 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 2. Check of Indoor Unit after transport and following removal Check if Indoor Unit has not suffered damages by transport. The packaging must be intact. Otherwise, logde a complaint to transporter. During removal, take care to the following symbols on packaging.
  • Page 342 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter <1000mm Air outlet Duct >200mm Air inlet plenum Air inlet grille VIEW A Suitable spaces must be available, equal or wider as regards those indicated on the previous Figure. If needed, strengthen the surface where fixing devices must be inserted.
  • Page 343 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter ■ STEEL ROOF BEAM STRUCTURE (“L” SECTION ELEMENTS) For suspending Indoor Unit, screw hanging bolts on metal frame directly. Hanging screw bolt Supporting angle steel Indoor Unit’s hanging bolts Fig.
  • Page 344 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter Fresh air inlet hole (Ø100) >500mm >500mm HRBU 536 X Model ■ Unit: mm Air outlet Pipe connection Drain hose (Ø25) 1179 Gas side (Ø12.7, 1/2”) Pipe connection Liquid side (Ø6.35, 1/4”) 1224 1179...
  • Page 345 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 4.2 Installation of air outlet duct Lenght of air outlet duct: ■ As these Models are of low ducted type (about 10Pa), it’s a good rule to reduce as much as possible the lenght of air outlet connection duct (max.
  • Page 346 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 4.3 Panel or air inlet grille of Indoor Unit Installation of panel or air inlet grille: ■ On Indoor Unit’s air inlet side, a panel or an air inlet grille of commercial type must be installed, as it is not provided with Indoor Unit.
  • Page 347 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 5. Refrigerant pipings Check if splitting distance (also considering the number of bends on pipings) and splitting level distance between Indoor Units and Outdoor Unit respect limitations indicated by the Manufacturer. 5.1 Procedure for connection of refrigerant pipings Caution: Connection of refrigerant pipings must be carried out by Authorized Technical Service, in accordance with...
  • Page 348 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 5.3 Carry out connection of refrigerant pipings first on Indoor Unit, then on Outdoor Unit. If a pipe bender is not available, please observe min. radius of curvature shown on Figure below. In case of manual bending of pipings, please observe min.
  • Page 349 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 6. Drain piping 6.1 Installation of drain pipe for Indoor Unit Caution: 1) Condensate drain piping must be properly insulated by close cells’ insulating material of suitable thickness, near connection point on Indoor Unit and on the first portion (at least 1m).
  • Page 350 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 6.2 Drain hose test 1) Pour water inside drain piping, and check if it flows down properly. 2) Take care that drain piping is not pressed along its path. 3) Along piping path, there must be no portions with inverted slope.
  • Page 351 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 7. Wiring 7.1 General cautions 1) Electric part of installation must be carried out in accordance with national and local current regulations as far as electric installation are concerned. 2) These systems require one power supply line, specific to the system only.
  • Page 352 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter Basic information on wiring for Multi Liberty DC Inverter systems • Power supply (on Outdoor Unit): - 1-Phase, 220~240V, 50 Hz. - Power source limitations: ±10% as regards rating value. - Voltage at starting: 85% as regards rating value.
  • Page 353 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter • Min. section of cables (prewiring-up = 6m) between each Indoor Unit and the Outdoor Unit: - All Models → 1.5mm Outdoor Unit 1 2(N) Power supply Indoor Unit “A” Indoor Unit “B”...
  • Page 354 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 8. Test 1. Test procedure of system must be carried out only after installation has been completed in all its parts (electric part and refrigerant part). 2. Before carrying out the Test, please check the following: •...

  • Page 355: Installation Of Multi Liberty Dc Inverter Outdoor Units

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 4.7 INSTALLATION OF MULTI LIBERTY DC INVERTER OUTDOOR UNITS 4.7 .1 Accessories required for installation The following accessories must be available for Outdoor Unit’s installation: Quantity Description Appearance Drain elbow Rubber pads Clip...
  • Page 356 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 4.7.4 Overall view of installation (Example: HKEU X Models) 1. When chased laying is carried out of refrigerant pipings, take care to seal the ends of these refrigerant lines, by pinching and welding them so as to protect them from infiltrations. 2.
  • Page 357 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 4.7.5 Overall view of installation (Example: HTFU X Models) 1. When chased laying is carried out of refrigerant pipings, take care to seal the ends of these refrigerant lines, by pinching and welding them so as to protect them from infiltrations. 2.
  • Page 358 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 4.7.6 Overall view of installation (Example: HFIU X Models) 1. When chased laying is carried out of refrigerant pipings, take care to seal the ends of these refrigerant lines, by pinching and welding them so as to protect them from infiltrations. 2.
  • Page 359 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 4.7.7 Overall view of installation (Example: HSFU X Models) 1. When chased laying is carried out of refrigerant pipings, take care to seal the ends of these refrigerant lines, by pinching and welding them so as to protect them from infiltrations. 2.
  • Page 360 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 4.7.8 Overall view of installation (Example: HRBU X Models) 1. When chased laying is carried out of refrigerant pipings, take care to seal the ends of these refrigerant lines, by pinching and welding them so as to protect them from infiltrations. 2.
  • Page 361 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 4.7.9 Systems with O.U. HCKU 406 X2: Limitations for distances & splitting level distances (Example) Indoor Unit HKEU 266X HCKU 406 X2 (Example) Indoor Unit HFIU 356X Distances & splitting level distances Item Unit Description...
  • Page 362 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 4.7.10 Systems with O.U. HCKU 536 X2: Limitations for distances & splitting level distances (Example) Indoor Unit HKEU 536 X HCKU 536 X2 (Example) Indoor Unit HTFU 206 X Distance and splitting level distances Item Unit...
  • Page 363 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 4.7.11 Systems with O.U. con HCKU 606 X3: Limitations for distance & splitting level distances (Example) Indoor Unit HKEU 356 X (Example) HCKU 606 X3 Indoor Unit HTFU 266 X (Example) Indoor Unit HKEU 266 X...
  • Page 364 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 4.7.12 Systems with O.U. HCKU 806 X3: Limitations for distances & splitting level distances (Example) Indoor Unit HKEU 536 X (Example) HCKU 806 X3 Indoor Unit HTFU 206 X (Example) Indoor Unit HRBU 206 X...
  • Page 365 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 4.7.13 Systems with O.U. HCKU 706 X4: Limitations for distances & splitting level distances (Example) Indoor Unit HKEU 356 X (Example) HCKU 706 X4 Indoor Unit HTFU 266 X (Example) Indoor Unit HRBU 266 X...
  • Page 366 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 4.7.14 Systems with O.U. HCKU 816 X4: Limitations for distances & splitting level distances (Example) Indoor Unit HKEU 206 X (Example) HCKU 816 X4 Indoor Unit HTFU 266 X (Example) Indoor Unit HRBU 356 X...
  • Page 367 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 4.7.15 Systems with O.U. HCKU 1066 X4: Limitations for distances & splitting level distances (Example) Indoor Unit HSFU 536 X (Example) HCKU 1066 X4 Indoor Unit HFIU 356 X (Example) Indoor Unit HRBU 356 X...
  • Page 368 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 4.7.16 Pipings’ cutting and flaring • Cut pipings at your desired length, by using the special pipe cutter. • At the end of operation, please remove burr from pipings’ ends by using the deburring tool. •...
  • Page 369 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 4.7.18 Position of piping connections on Outdoor Unit [Example: Model HCKU 706 X4) Note: For reaching piping connections, placed on right side of Outdoor Unit (if you are watching Unit frontally), it is needed to remove protective side Indoor Unit “A”...
  • Page 370 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 4.7.20 Opening/closing of service valves on Outdoor Unit How to operate on service valves of Outdoor Unit a. Opening of service valve 1) Remove the service valve’s protective nut and use an Allen key having the dimensions indicated in the Table below for rotating the service valve anticlockwise.
  • Page 371 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 4.7.21 Use of vacuum pump (separately, on circuit of each connected Indoor Unit) 1) Screw and remove protective nuts of service valves “G” and “L” and connect to check joint of service valve “G”...
  • Page 372 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 4.7.23 Wiring Electrical work must be carried out by Authorized Technical Service, that works in accordance with current national and local regulations. 1. Power supply line must be for system only. A circuit breaker must be installed which interrupts all contacts (in opening position, min.
  • Page 373 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter Basic information on wiring for Multi Liberty DC Inverter systems • Power supply (on Outdoor Unit): - 1-Phase, 220~240V, 50 Hz. - Power source limitations: ±10% as regards rating value. - Voltage at starting: 85% as regards rating value.
  • Page 374 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter “Plug” Cable for Connection between Indoor Units & Outdoor Unit Multi Liberty DC Inverter (By dedicated connectors (Units “A”, “B”, “C”, “D”) for “Plug”, on Outdoor Unit) (TO INDOOR UNIT’S TERMINAL BLOCK) Unit : mm (TO OUTDOOR UNIT) INS-101...
  • Page 375 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter Wiring between Indoor Units & Outdoor Units Multi Liberty DC Inverter (By dedicated connectors (Units “A”, “B”, “C”, “D”) for “PLUG”, on Outdoor Unit) INS-102...
  • Page 376 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 4. Installation DC Inverter 4.7.24 Final checks & Test 1. Test procedure of system must be carried out only after installation has been completed in all its parts (electric part and refrigerant part). 2.
  • Page 377 Multi Liberty Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 5. Funzioni Logiche di Controllo DUAL, TRIPLE, POKER DC Inverter : 3. Unità Esterne e Diagnostica DC Inverter DC Inverter Section 5: CONTROL FUNCTIONS Table of Contents 5. CONTROL FUNCTIONS........................CF-2 CF-1...

  • Page 378: Control Functions

    Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 5. Control Functions DC Inverter 5. CONTROL FUNCTIONS 5.1 Specifications of power supply & power input of some components 5.1.1 Power supply voltage range: 175~254V. 5.1.2 Power supply frequency: 50 Hz. 5.1.3 Power input of indoor fan motor in normal conditions: < 1A. 5.1.4 Power input of outdoor fan motor in normal conditions: <...
  • Page 379 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 5. Control Functions DC Inverter “TURBO” indication lamp Turbo It lights up when “TURBO” function is selected by remote control. This function is available in Cooling mode only. DIGITAL DISPLAY indication lamp Displays the current setting temperature when the air conditioner is in operation.
  • Page 380 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 5. Control Functions DC Inverter ALARM LED The LED flashes when the level in the water condensate pan exceeds the operation limit. This also makes the compressor stop, till the condensate drain pump has eliminated the surplus water. MANUAL button (Emergency/Test) To start the air conditioner in Automatic mode when the remote controller is not available, and to start the Test mode in Cooling operation.
  • Page 381 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 5. Control Functions DC Inverter PRE-DEF. LED (Preheating/Defrosting) If control electronics detects the conditions required for start of Automatic Defrosting (see Section “CF: Control Functions”, of this Service Manual), defrosting automatically starts and this LED lights up. The LED also lights up when indoor heat exchanger’s Preheating function is activated.
  • Page 382 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 5. Control Functions DC Inverter PRE-DEF. LED (Preheating/Defrosting) If control electronics detects the conditions required for start of Automatic Defrosting (see Section “CF: Control Functions”, of this Service Manual), defrosting automatically starts and this LED lights up. The LED also lights up when indoor heat exchanger’s Preheating function is activated.
  • Page 383 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 5. Control Functions DC Inverter malfunction, check Error/Protection Code shown by 2-digit display on Outdoor Unit’s PCB. Normal operation can be restored only after problem has been solved. MANUAL button (Emergency/Test) To start the air conditioner in Automatic mode when the remote controller is not available, and to start the Test mode in Cooling operation.
  • Page 384 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 5. Control Functions DC Inverter Type of displayed parameter Additional notes Outdoor air temperature Actual value Compressor discharge temperature Actual value Inverter current Actual value EXV open angle (for I.U. #1) Actual value x 8 EXV open angle (for I.U.
  • Page 385 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 5. Control Functions DC Inverter 5.4.4 Capacity required by Indoor Units, after correction (if SW1 is pressed for the 3rd time) Cooling mode Capacity 2000 2000 3000 4500 5000 5500 6100 7000 7500 7500 (Watt)
  • Page 386 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 5. Control Functions DC Inverter Outdoor air Outdoor air Outdoor air Display Display Display temperature (°C) temperature (°C) temperature (°C) 14.5 23.5 32.5 15.5 24.5 33.5 16.5 25.5 34.5 35~40 17.5 26.5 40~45 45~50 18.5...
  • Page 387 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 5. Control Functions DC Inverter 5.5 Integrated functions of troubleshooting and protection 5.5.1 3-minute delay protection (delayed start of compressor) It consists in delayed restart of compressor: in case a compressor stop followed by a restart, operation of air conditioner will restart after 3 minutes have elapsed.
  • Page 388 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 5. Control Functions DC Inverter Model HCKU 606 X3 VOLLIMT1 = 245V, VOLLIMT2 = 220V, VOLLIMT3 = 80V VOLREL1 = 265V, VOLREL2 = 240V, VOLREL3 = 100V VOLFRE1 = 78Hz, VOLFRE2 = 45Hz Model HCKU 806 X3 VOLLIMT1 = 245V, VOLLIMT2 = 220V, VOLLIMT3 = 120V VOLREL1 = 265V, VOLREL2 = 240V, VOLREL3 = 135V...
  • Page 389 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 5. Control Functions DC Inverter 5.5.8 Error in the transmission of data sequences along signal line [HKEU X Multi Liberty only] If the transmission of signals between HKEU X Indoor Unit and the Outdoor Unit does not occur properly for 4 minutes, the air conditioner stops because of a malfunction and normal operation cannot be restored automatically.
  • Page 390 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 5. Control Functions DC Inverter 5.5.10 Communication error between Indoor Unit ↔ Outdoor Unit If for max. 2 minutes one Indoor Unit does not receive any return signal by Outdoor Unit, the corresponding malfunction indication will be shown on Indoor Unit’s LED display (HKEU X Models) or on Indoor Unit’s display panel (all other Models: HTFU X, HFIU X, HSFU X, HRBU X).
  • Page 391 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 5. Control Functions DC Inverter 5.5.15 Oil heater of compressor Outline of function. By an electric resistance placed at the bottom of compressor, compressor oil is pre-heated and refrigerant eventually mixed to oil is vaporized. Conditions for intervention of function.
  • Page 392 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 5. Control Functions DC Inverter 5.6.2 Automatic control of fan speed (HKEU X, HTFU X, HSFU X, HRBU X Models) in Fan mode (“FAN”). This function is illustrated in the following diagram. T1-Ta (°C) “High”...
  • Page 393 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 5. Control Functions DC Inverter HFIU X Models T1-TS (°C) “High” speed +3.5 +3.0 “Medium” speed +1.5 “Low” speed +1.0 T1 = temperature detected inside the room. Ts = temperature set by remote control. HTFU X, HSFU X, HRBU X Models T1-TS (°C) “High”...
  • Page 394 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 5. Control Functions DC Inverter 5.8.2 Protection in case of low temperature inside the room If temperature (T1) inside the room is lower than 10°C, indoor fan is stopped and normal operation will be restored only after room temperature has reached a value of at least 12°C.
  • Page 395 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 5. Control Functions DC Inverter HTFU X, HSFU X, HRBU X Models T2 (°C) Set speed “Low” speed Fan OFF T2 = temperature of Indoor Unit’s heat exchanger. 5.9.2 Automatic control of fan speed, in Heating mode If “Auto”...
  • Page 396 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 5. Control Functions DC Inverter HTFU X, HSFU X, HRBU X Models T1 -Ts (°C) “Low” speed “Medium” speed “High” speed T1 = temperature detected inside the room. Ts = temperature set by remote control. 5.9.3 Indoor heat exchanger overtemperature control, in Heating mode The following Tables show the conditions and intervention modes of protection and the restoring conditions when the protection intervention ends.
  • Page 397 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 5. Control Functions DC Inverter 5.9.4 Indoor heat exchanger’s overheating prevention control (thermostatic OFF) in Heating mode. For HFIU X Models, during thermostatic OFF in Heating mode, indoor fan will run at “Low” speed to prevent overheating of Indoor Unit’s heat exchanger.
  • Page 398 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 5. Control Functions DC Inverter HFIU X Models Temperature differential |T1 - Ts| Operation mode Cooling |T1- Ts| > 1°C -1°C < |T1 - Ts| ≤ 1°C Heating |T1 - Ts| ≤ -1°C HTBU X, HSFU X, HRBU X Models Temperature differential |T1 - Ts| Operation mode...
  • Page 399 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 5. Control Functions DC Inverter rHTFU X Models (“MANUAL” button) 5.12.4 Emergency Operation in “AUTO” mode: If Remote Control is not available or batteries are exhausted, it is possible to operate the air conditioner by pressing “MANUAL”...
  • Page 400 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 5. Control Functions DC Inverter by pressing “MANUAL” button once when system is OFF. In this way, Emergency operation in “AUTO” (Automatic) mode will be started, and the air conditioner will operate in the most suitable mode according to room temperature conditions, with temperature set to 24°C.
  • Page 401 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 5. Control Functions DC Inverter 5.13.2 Programmed settings follow a simple timer, as remote control has no current time setting function (real time clock). 5.13.3 “TIMER ON” function. When system is OFF, it will be restarted (ON) after programmed set time has elapsed. 5.13.4 “TIMER OFF”...
  • Page 402 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 5. Control Functions DC Inverter 5.13.15 “TIMER ON” function. When system is stopped (OFF), it will be restarted (ON) after programmed set time has elapsed. 5.13.16 “TIMER OFF” function. When system is ON, it will be stopped (OFF) after programmed set time has elapsed. 5.13.17 “TIMER ON-OFF”...
  • Page 403 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 5. Control Functions DC Inverter every hour. At the end of this time, operation goes on for 5 hours with constant set temperature, and indoor fan speed is set to “LOW”. After 7 hours since “SLEEP” function was selected, Indoor Unit automatically stops (OFF). 5.14.3 “SLEEP”...
  • Page 404 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 5. Control Functions DC Inverter mode. It can be activated by the special button (“POWERFUL”) on IR remote control provided with this Models of Indoor Unit. 5.16.2 Indoor fan speed is set to “S-Hi” (“Super-High”) or to “U-Hi” (“Ultra-High”), that is to the 4th (higher) step of fan speed, according to the setting of 2 dip-switches “SW103”...
  • Page 405 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 5. Control Functions DC Inverter Cooling Heating Cooling Heating 5.18.3 Some examples of operation in case of operation modes’ conflict a. If one or more Indoor Units are operating in Cooling or Fan mode, and operation in Heating mode is selected on at least one Indoor Unit of the same system, the Indoor Unit operating in Cooling or Fan mode will get to stand-by status.
  • Page 406 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : 5. Control Functions DC Inverter 5.20 Troubleshooting functions of system’s malfunctions 5.20.1 The codified indications referred to malfunctions or to protection functions’ interventions of Indoor and Outdoor Units of each system are shown in “Section 3: Outdoor Units & Troubleshooting” of this Service Manual. CF-30...
  • Page 407 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : Notes DC Inverter Notes Notes-1...
  • Page 408 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : Notes DC Inverter Notes Notes-2...
  • Page 409 Multi Liberty DUAL, TRIPLE, POKER DC Inverter : Notes DC Inverter Notes Notes-3...
  • Page 410 Multi Liberty DC Inverter HOKKAIDO SRL 14, Via della Salute - 40132 Bologna - Italy Tel. +39.051.41.33.111 Fax +39.051.41.33.146 www.hokkaido.it Due to on-going technological development of Products by Manufacturer, we reserve the right to vary the technical specifications at any time without notice.

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Hfiu 356 seriesHfiu 536 seriesHrbu 206 seriesHcku 406 x2 seriesHcku 536 x2 seriesHcku 606 x3 series ... Show all

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