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Termal HKED 261 X Technical Manual

Monosplit “wall” type air conditioners
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Monosplit "Wall" type Air Conditioners
"Personal Line DC Inverter" Models
Indoor Units:
Outdoor Units:
Technical Manual (07/2010 - VA1)
HKED 261 X
HKED 351 X
HKED 511 X
HKED 631 X
HCND 261 X
HCND 351 X
HCND 511 X
HCND 631 X

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  • Page 1 Technical Manual (07/2010 - VA1) Monosplit “Wall” type Air Conditioners “Personal Line DC Inverter” Models Indoor Units: HKED 261 X HKED 351 X HKED 511 X HKED 631 X Outdoor Units: HCND 261 X HCND 351 X HCND 511 X...

  • Page 2: Table Of Contents

    Monosplit “Wall” Personal Line DC Inverter - Table of Contents Table of Contents 1. GENERAL INFORMATION ........................... IG-1 1.1 GUIDELINES TO CONSULTATION & WARNINGS ..................IG-1 1.2 ESSENTIAL FEATURES OF THESE MODELS ....................IG-2 1.3 APPEARANCE OF UNITS ..........................IG-8 1.4 OUTLINE OF INDOOR & OUTDOOR UNITS ....................IG-13 1.5 IR REMOTE CONTROL ..........................IG-14 1.6 LED PANEL ON INDOOR UNITS........................IG-18 1.7 OPERATING USE CONDITIONS ........................IG-20...

  • Page 3: General Information

    Monosplit “Wall” Personal Line DC Inverter - Section 1: General Information 1. GENERAL INFORMATION 1.1 GUIDELINES TO CONSULTATION & WARNINGS This Manual describes operation, installation and procedures for solving operation malfunctions of HOKKAIDO Air Conditioners Monosplit “Wall” Personal Line DC Inverter HKED-HCND 261, 351, 511, 631 X”.

  • Page 4: Essential Features Of These Models

    Monosplit “Wall” Personal Line DC Inverter - Section 1: General Information 1.2 ESSENTIAL FEATURES OF THESE MODELS â Power modulation by DC Inverter control Power supplied by system changes according to thermal load in installation environment. When temperature inside the room reaches a value which is close to value set by User, compressor rotation lowers, so as to allow a sensible reduction in power consumption.
  • Page 5 Monosplit “Wall” Personal Line DC Inverter - Section 1: General Information This operation option - which however is detrimental to noise level produced by Indoor Unit - is available both in Cooling mode and in Heating mode.  “SWING” option: automatic swinging downwards and upwards of air outlet horizontal louver, for a uniform distribution of air supplied in the room by Indoor Unit.
  • Page 6 Monosplit “Wall” Personal Line DC Inverter - Section 1: General Information exchanger. This logic of operation is in order to prevent humidity stagnation and the consequent forming of mould on Indoor Uni’s heat exchanger. â Operation in Heating mode with very low temperature These systems are able to operate in Heating mode also if outdoor temperature is very low: in fact, the lowest value of operating range in Heating mode is - 15°C.
  • Page 7 Monosplit “Wall” Personal Line DC Inverter - Section 1: General Information and fixation screws placed outside the chassis.  The refrigerant fittings (service valves) and the electrical connections (terminal blocks) are protected from atmospheric agents (infiltrations of rainwater) by panels and service covers. IG-5...

  • Page 8: Automatic Defrosting

    Monosplit “Wall” Personal Line DC Inverter - Section 1: General Information Recapitulatory outline of main available functions on Units Indoor Units ON/OFF by IR remote control Monitoring of temperature values Indoor temperature sensor and outdoor temperature sensor. Indoor heat exchanger temperature sensor and outdoor heat exchanger sensor. Ambient temperature control Room temperature is kept on the basis of temperature value set by remote control, by thermostat under microcomputer control and compressor operation at variable speed (control by DC Inverter).
  • Page 9 Monosplit “Wall” Personal Line DC Inverter - Section 1: General Information Outdoor Units Timed ON/OFF of compressor Min. interval between ON/OFF cycles of compressor is of 3 minutes. Control of compressor rotation speed by DC Inverter technology This kind of control allows a continuous modulation of system operation on the basis of thermal load and of desired comfort, and allows to reduce power consumption especially at medium-low speed.

  • Page 10: Appearance Of Units

    Monosplit “Wall” Personal Line DC Inverter - Section 1: General Information 1.3 APPEARANCE OF UNITS Indoor Units “Wall” Personal Line DC Inverter: Models HKED 261 X, HKED 351 X Frontal board standard “White” (by factory) Models HKED 261 X, HKED 351 X Frontal board optional “Black”...
  • Page 11 Monosplit “Wall” Personal Line DC Inverter - Section 1: General Information Indoor Units “Wall” Personal Line DC Inverter: Models HKED 261 X, HKED 351 X Frontal board optional “Silver” (HSD-2-SLV) Models HKED 261 X, HKED 351 X Frontal board optional “Light-Blue” (HSD-2-LBL)
  • Page 12 Monosplit “Wall” Personal Line DC Inverter - Section 1: General Information Indoor Units “Wall” Personal Line DC Inverter: Models HKED 511 X, HKED 631 X Frontal board standard “White” (by factory) Models HKED 511 X, HKED 631 X Frontal board optional “Black” (HSD-3-BCK) Models HKED 511 X, HKED 631 X Frontal board optional “Gold”...
  • Page 13 Monosplit “Wall” Personal Line DC Inverter - Section 1: General Information Indoor Units “Wall” Personal Line DC Inverter: Models HKED 511 X, HKED 631 X Frontal board optional “Silver” (HSD-3-SLV) Models HKED 511 X, HKED 631 X Frontal board optional “Light-Blue” (HSD-3-LBL) IG-11...
  • Page 14 Monosplit “Wall” Personal Line DC Inverter - Section 1: General Information Outdoor Units Personal Line DC Inverter: Models HCND 261 X, HCND 351 X Models HCND 511 X, HCND 631 X IG-12...

  • Page 15: Outline Of Indoor & Outdoor Units

    Monosplit “Wall” Personal Line DC Inverter - Section 1: General Information 1.4 OUTLINE OF INDOOR & OUTDOOR UNITS Indoor Unit Air inlet Display Panel & LED Indicators Louver for adjusting air in horizontal direction. The louver is motorized on HKED 511, 631X Models only.

  • Page 16: Ir Remote Control

    Monosplit “Wall” Personal Line DC Inverter - Section 1: General Information 1.5 IR REMOTE CONTROL nIR Remote Control for Models HKED (261, 351, 511, 631) X  Notes: ¦For a detailed explication concerning the function of each button of IR remote control, and concerning symbols which are shown on remote control’s LCD Display, please refer to the “User Manual”...

  • Page 17: Operation Mode

    Monosplit “Wall” Personal Line DC Inverter - Section 1: General Information Outline of IR remote control’s buttons Set Temperature “ON/OFF” Button These buttons allow to adjust To start/stop the system. ambient temperature. press “+” button, temperature is increased by 1°C. “SWING”...
  • Page 18 Monosplit “Wall” Personal Line DC Inverter - Section 1: General Information Outline of symboles on IR remote control’s Display Automatic Mode “SLEEP” Indicator This symbol indicates that “AUTO” It indicates that “SLEEP” mode has TEMPERATURE Mode has been selected. been selected. This indicator shows set temperature.
  • Page 19 Monosplit “Wall” Personal Line DC Inverter - Section 1: General Information Recommendations for the correct use of IR remote control IR receiver for remote control Maximum allowed distance: 8 metres  Make sure that batteries (“AAA” type, 1.5V) are fully charged and correctly fitted in the special case on remote control, by respecting the polarity marked on remote control itself.

  • Page 20: Led Panel On Indoor Units

    Monosplit “Wall” Personal Line DC Inverter - Section 1: General Information 1.6 LED PANEL ON INDOOR UNITS Remote control’s signal receiver “Running” LED (Orange): It lights up when the Indoor Unit is operating. It goes out when the Indoor Unit is OFF (stop by remote control). It flashes (once/second) when at operation start in Heating mode, the preheating of heat exchanger on Indoor Unit is in progress (Indoor Unit’s fan is still stopped).
  • Page 21 Monosplit “Wall” Personal Line DC Inverter - Section 1: General Information Lighting of LED Display: LED Display, usually off during system operation, can be lighted up according to the User’s needs by pressing “LAMP” on IR remote control. To turn off or light up LED Display, it is necessary to press “LAMP” button on IR remote control. IG-19...

  • Page 22: Operating Use Conditions

    Monosplit “Wall” Personal Line DC Inverter - Section 1: General Information 1.7 OPERATING USE CONDITIONS  In order to obtain the best performances from the appliance, it is recommended its use under the following temperature conditions: Operation Mode Cooling Heating Temperatures Ambient temperature ≥...

  • Page 23: How To Adjust Air Direction

    Monosplit “Wall” Personal Line DC Inverter - Section 1: General Information 1.8 HOW TO ADJUST AIR DIRECTION n Adjustment of airflow in vertical direction Carry out this adjustment according to your comfort needs, and avoid to direct airflow to people, plants and animals.
  • Page 24 Adjstment mechanism will not be damaged. As far as HKED 261 X and HKED 351 X Models are concerned - that are not equipped with motorized vertical flaps - you can adjust airflow in horizontal direction by moving vertical louver by hand.

  • Page 25: Emergency Operation & "Self-Check

    Monosplit “Wall” Personal Line DC Inverter - Section 1: General Information 1.9 EMERGENCY OPERATION & “SELF-CHECK” Access to Emergency Button: For reaching Emergency Button, open frontal panel. Opening of frontal panel: Seize both side ends of frontal panel. Pull the Frontal panel panel towards you and lift it till hearing the click of limit end.
  • Page 26 Monosplit “Wall” Personal Line DC Inverter - Section 1: General Information All indicators on Indoor Unit’s LED Display will light up in sequence and afterwards will go out, if no malfunction can be diagnosed by control electronics. Otherwise, an Error Code (“F_”) will be displayed and at the same time “Running”...

  • Page 27: Auto-Restart Functon After A Blackout

    Monosplit “Wall” Personal Line DC Inverter - Section 1: General Information 1.10 AUTO-RESTART FUNCTON AFTER A BLACKOUT  A blackout during system’s operation, immediately causes the system’s stop.  When power is restored, Operation LED (“Running”) on Indoor Unit will start blinking. ...

  • Page 28: Suggestions For Economic Use Of System

    Monosplit “Wall” Personal Line DC Inverter - Section 1: General Information 1.11 SUGGESTIONS FOR ECONOMIC USE OF SYSTEM Adjust temperature in a correct way n Set a suitable temperature value: ¦During operation in Heating mode, avoid to set a too high temperature value. ¦During operation in Cooling mode, avoid to set a too low temperature value.
  • Page 29 Monosplit “Wall” Personal Line DC Inverter - Section 1: General Information n Use “TURBO” function according to real needs: Use “TURBO” function according to real needs ¦If “TURBO” function is selected, system will operate for a max. time of 20 minutes at max. speed, so as to reach desired comfort quickier.

  • Page 30: General Technical Data

    Monosplit “Wall” Personal Line DC Inverter - Section 2: General Technical Data 2. GENERAL TECHNICAL DATA 2.1 SPECIFICATIONS HKED 261 X - HCND 261 X Power Supply Ph-V-Hz 1- 220 ~ 240V- 50Hz Cooling capacity 2.60 (1.70 ~ 3.50) 0.710 (0.45 ~ 1.25)
  • Page 31 Monosplit “Wall” Personal Line DC Inverter - Section 2: General Technical Data HKED 351 X - HCND 351 X Power Supply Ph-V-Hz 1- 220 ~ 240V- 50Hz Cooling capacity 3.50 (1.70 ~ 4.10) Power input (Cooling) 1.080 (0.45 ~ 1.40) Cooling Input Rated Current EER / Energy Level Class...
  • Page 32 Monosplit “Wall” Personal Line DC Inverter - Section 2: General Technical Data HKED 511 X - HCND 511 X Power Supply Ph-V-Hz 1- 220 ~ 240V- 50Hz Cooling capacity 5.10 (1.80 ~ 6.00) Power input (Cooling) 1.497 (0.49 ~ 2.08) Cooling Input Rated Current EER / Energy Level Class...
  • Page 33 Monosplit “Wall” Personal Line DC Inverter - Section 2: General Technical Data HKED 631 X - HCND 631 X Power Supply Ph-V-Hz 1- 220 ~ 240V- 50Hz Cooling capacity 6.30 (1.80 ~ 6.50) Power input (Cooling) 1.95 (0.49 ~ 2.25) Cooling Input Rated Current EER / Energy Level Class...

  • Page 34: Dimensions Of Units

    Monosplit “Wall” Personal Line DC Inverter - Section 2: General Technical Data 2.2 DIMENSIONS OF UNITS Indoor Units HKED 261 X, HKED 351 X Unit: mm Dimensions Width Height Depth Model HKED 261 X HKED 351 X DG-5...
  • Page 35 Monosplit “Wall” Personal Line DC Inverter - Section 2: General Technical Data Indoor Units HKED 511 X, HKED 631 X Unit: mm Dimensions Width Height Depth Model HKED 511 X HKED 631 X DG-6...
  • Page 36 Monosplit “Wall” Personal Line DC Inverter - Section 2: General Technical Data Outdoor Units HCND 261 X, HCND 351 X Unit: mm Dimensions Width Height Depth Model HCND 261 X HCND 351 X Outdoor Units HCND 511 X, HCND 631 X Unit: mm Dimensions Width...

  • Page 37: Refrigerant Circuit Diagrams

    Monosplit “Wall” Personal Line DC Inverter - Section 2: General Technical Data 2.3 REFRIGERANT CIRCUIT DIAGRAMS DG-8...
  • Page 38 Monosplit “Wall” Personal Line DC Inverter - Section 2: General Technical Data DG-9...

  • Page 39: Electrical Data

    Monosplit “Wall” Personal Line DC Inverter - Section 3: Electrical Data 3. ELECTRICAL DATA 3.1 WIRING DIAGRAMS Indoor Units HKED 261 X, HKED 351 X Fan motor LED Display & IR Receiver Yellow / CN101 Green Transformer Horizontal flap motor...
  • Page 40 Monosplit “Wall” Personal Line DC Inverter - Section 3: Electrical Data Indoor Units HKED 511 X, HKED 631 X Transformer CN103 Yellow / CN101 CN104 Green Blue CN114 CN111 Brown CN112 Yellow / Green CN102 Brown CNM2 CNM1 PT RT Fan motor ...
  • Page 41 Monosplit “Wall” Personal Line DC Inverter - Section 3: Electrical Data Outdoor Units HCND 261 X, HCND 351 X Brown Brown Black White CN707 Black Blue 4-way valve coil Heat exchanger sensor (TP2) CN513 Discharge pipe temperature sensor CN514 (Tdc) CN515 Outdoor temperature sensor (Tao)
  • Page 42 Monosplit “Wall” Personal Line DC Inverter - Section 3: Electrical Data Outdoor Units HCND 511 X, HCND 631 X Black Black White Rosso Orange White Yellow Fan motor Black Discharge pipe temperature sensor (Tdc) Resistance Suction pipe temperature sensor (Tsc) Heat exchanger temp.

  • Page 43: R/T Features Of Temperature Sensors

    Monosplit “Wall” Personal Line DC Inverter - Section 3: Electrical Data 3.2 R/T FEATURES OF TEMPERATURE SENSORS DE-5...
  • Page 44 Monosplit “Wall” Personal Line DC Inverter - Section 3: Electrical Data R-T Tables of thermistors resistance values depending on temperatures [All Indoor Units] Tr (room temperature) | TP1 (heat exchanger) Circuit voltage Circuit voltage Temperature (5V, 4.3K) Temperature (5V, 4.3K) Standard Standard Res.
  • Page 45 Monosplit “Wall” Personal Line DC Inverter - Section 3: Electrical Data R-T Tables of thermistors resistance values depending on temperatures [Outdoor Units HCND (261, 351) X] Tdc (discharge pipe temperature) Temperature Temperature Standard Standard Res. Min. Res. Max. Res. Min. Res.
  • Page 46 Monosplit “Wall” Personal Line DC Inverter - Section 3: Electrical Data R-T Tables of thermistors resistance values depending on temperatures [Outdoor Units HCND (261, 351) X] Tdc (discharge pipe temperature) Temperature Temperature Standard Standard Res. Min. Res. Max. Res. Min. Res.
  • Page 47 Monosplit “Wall” Personal Line DC Inverter - Section 3: Electrical Data R-T Tables of thermistors resistance values depending on temperatures [Outdoor Units HCND (261, 351) X] Tdc (discharge pipe temperature) Temperature Temperature Res. Min. Standard Res. Max. Res. Min. Standard Res.
  • Page 48 Monosplit “Wall” Personal Line DC Inverter - Section 3: Electrical Data R-T Tables of thermistors resistance values depending on temperatures [Outdoor Units HCND (511, 631) X] Tdc (discharge pipe temperature) Temperature Voltage on circuit Voltage on circuit Decimal Temperature Decimal Nom.
  • Page 49 Monosplit “Wall” Personal Line DC Inverter - Section 3: Electrical Data R-T Tables of thermistors resistance values depending on temperatures [Outdoor Units HCND (511, 631) X] Tdc (discharge pipe temperature) Temperature Voltage on circuit Decimal Temperature Voltage on circuit Decimal Nom.
  • Page 50 Monosplit “Wall” Personal Line DC Inverter - Section 3: Electrical Data R-T Tables of thermistors resistance values depending on temperatures [All Outdoor Units] TP2 (outdoor heat exchanger temperature) Tao (outdoor temperature) Tsc (suction pipe temperature): [HCND (511, 631) X only] Voltage on circuit Voltage on circuit Temperature...
  • Page 51 Monosplit “Wall” Personal Line DC Inverter - Section 3: Electrical Data R-T Table of thermistors resistance values depending on temperatures [All Outdoor Units] TP2 (outdoor heat exchanger) Tao (outdoor temperature) Tsc (suction pipe temperature) → [HCND (511, 631) X only] Voltage on circuit Voltage on circuit Temperature...

  • Page 52: Control Logic Functions

    Monosplit “Wall” Personal Line DC Inverter - Section 4: Control Logic Functions 4. CONTROL LOGIC FUNCTIONS 4.1 HARDWARE FEATURES 4.1.1 Power supply requirements, operating conditions (temperature & humidity) of PCB The system is compatible with power supply voltage inside the range 165~265V AC, with power supply frequence of 50Hz.

  • Page 53: Software Features

    Monosplit “Wall” Personal Line DC Inverter - Section 4: Control Logic Functions 4.2 SOFTWARE FEATURES 4.2.1 Symbols referred to temperature values and indoor fan speed 1. Symbols referred to temperature values Ts: set temperature, in °C. Tr: room temperature, in °C. TP1: Indoor Unit’s heat exchanger temperature.
  • Page 54 Monosplit “Wall” Personal Line DC Inverter - Section 4: Control Logic Functions before restarting in new operation mode. (5) Compressor’s operation frequency depends on operation mode automatically selected by control electronics. (6) Position of 4-way valve depends on operatrion mode automatically selected by control electronics. (7) Outdoor fan speed depends on operation mode automatically selected by control electronics.
  • Page 55 Monosplit “Wall” Personal Line DC Inverter - Section 4: Control Logic Functions Vel. HIGH Vel. MED. Vel. LOW (0) Ts Tr (°C) (6) Delayed stop of indoor fan in case of stop of system: In case of stop of system (OFF) by IR remote control or by Emergency Button, fan speed keeps on for 30 seconds at “Low”...
  • Page 56 Monosplit “Wall” Personal Line DC Inverter - Section 4: Control Logic Functions 3) In case of automatic swinging (“SWING”) of outlet horizontal flap in Cooling mode, it occurs the following. a) The starting position of outlet horizontal flap in case of automatic swinging is Pc1. b) If automatic swinging of outlet horizontal flap is activated, by starting from a fixed position or from “natural flow”...
  • Page 57 Monosplit “Wall” Personal Line DC Inverter - Section 4: Control Logic Functions (3) Control of outdoor fan operation: in Dry mode, outdoor fan operates in synchronous way as regards compressor. (4) Control of indoor fan operation: indoor fan speed is set by “FS11” parameter and it cannot be modified by the User.
  • Page 58 Monosplit “Wall” Personal Line DC Inverter - Section 4: Control Logic Functions shown in the following graph. (0) Ts Tr (°C) (5) Control of indoor fan motor: 1) By IR remote control, User can select the following speeds: Ultra-HIGH (“Turbo” function), HIGH, MED., LOW, while “BREEZE”...
  • Page 59 Monosplit “Wall” Personal Line DC Inverter - Section 4: Control Logic Functions If TP1 < 25°C, indoor fan stops (OFF). If TP1 ≥ 25°C, outlet horizontal flap moves to default position (Ph4, ‚ see futher on) for anti-cold drafts prevention. If TP1 > 30°C, the intervention of anti-cold drafts prevention function ends.
  • Page 60 Monosplit “Wall” Personal Line DC Inverter - Section 4: Control Logic Functions (10) Control of outlet horizontal flap in Heating mode: 1) Position of total opening of outlet horizontal flap corresponds to Pch2 the position indicated by Pch1 on the Figure besides, while position of total closing corresponds to the position indicated by Pch2.
  • Page 61 Monosplit “Wall” Personal Line DC Inverter - Section 4: Control Logic Functions c) If automatic swinging is active, outlet horizontal flap moves continuous from Ph1 to Ph3 and vice versa. 5) “Natural flow” setting - or optimized airflow - foresees a sequence composed of 2 cycles of up/down swinging of horizontal flap, followed by a stop of 30 seconds, and so on.
  • Page 62 Monosplit “Wall” Personal Line DC Inverter - Section 4: Control Logic Functions 12.3 Automatic defrosting During automatic defrosting, only ON/OFF button on IR remote control and Emergency Button placed under Indoor Unit’s frontal panel are active. If you press whatever button on IR remote control, you can hear the “bip” of impulse reception by Indoor Unit, but the button’s pressing has no effect on system operation.
  • Page 63 Monosplit “Wall” Personal Line DC Inverter - Section 4: Control Logic Functions HIGH speed MED. speed LOW speed (0) Ts Tr (°C) If indoor fan speed is set to “AUTO”, indoor fan’s current speed will be confirmed within a max. variation of ± 1°C of room temperature (Tr) as regards set temperature (Ts).

  • Page 64: Basic Functions

    Monosplit “Wall” Personal Line DC Inverter - Section 4: Control Logic Functions 4.3 BASIC FUNCTIONS 4.3.1 Timer functions (“Timer On /Timer Off”) 1. Programmed start (“Timer On”) (1) If system is powered but it is in standby, it is possible to programme the delayed start of system by IR remote control.
  • Page 65 Monosplit “Wall” Personal Line DC Inverter - Section 4: Control Logic Functions (3) If system is ON, “Timer Off” function willl be selected (delayed stop). At each press of “TIMER” button, programmed time interval for stop will be increased by 1 hour, up to max. 24 hours.
  • Page 66 Monosplit “Wall” Personal Line DC Inverter - Section 4: Control Logic Functions 4.3.2 Operation with “SLEEP” function (1) This function is available in the following operation modes: Cooling mode (“COOL”) and Heating mode (“HEAT”). (2) “SLEEP” function always foresees “Low” fixed speed of Indoor Unit’s fan, therefore “SLEEP” function allows to reduce noise level produced by Indoor Unit’s operation.
  • Page 67 Monosplit “Wall” Personal Line DC Inverter - Section 4: Control Logic Functions 4.3.3 Operation with “TURBO” function (1) This function is available in the following operation modes: Cooling mode (“COOL”) and Heating mode (“HEAT”). (2) “TURBO” function can be activated by pressing the special button (“TURBO”) on IR remote control. On remote control’s LCD Display, “TURBO”...
  • Page 68 Monosplit “Wall” Personal Line DC Inverter - Section 4: Control Logic Functions 4.3.4 Operation by Emergency Button (1) If you press the Emergency Button placed under the Indoor Unit’s frontal panel, it is possible to start system temporarily without using IR remote control. This option is necessary if remote control’s batteries are exhausted and there is no possibility to replace them immediately, or if remote control is not available or it is malfunctioning.
  • Page 69 Monosplit “Wall” Personal Line DC Inverter - Section 4: Control Logic Functions 4.3.6 “Self-Check” Mode (quick autodiagnosis of malfunctions) You can reach this diagnostic mode by supplying power to the system through power supply main switch , and at the same time by keeping pressed Emergency Button on Indoor Unit. All indicators on Indoor Unit’s LED Display will light up in sequence and then go out, if no malfunctions can be diagnosed by control electronics.

  • Page 70: Some Indications Of Malfunctions & Protection Functions

    Monosplit “Wall” Personal Line DC Inverter - Section 4: Control Logic Functions 4.4 SOME INDICATIONS OF MALFUNCTIONS & PROTECTION FUNCTIONS 4.4.1 Malfunction of a room temperature sensor or of heat exchangers’ temperature sensor (1) In case of malfunction (breakdown or short circuit) of Indoor Unit’s room temperature (Tr) or of outdoor temperature sensor (Tao), LED Display on Indoor Unit will show the corresponding “Error Codes”...
  • Page 71 Monosplit “Wall” Personal Line DC Inverter - Section 4: Control Logic Functions start. (2) If temperature on Indoor Unit’s heat exchanger (TP1) is lower than 1°C, compressor stops and Indoor Unit’s LED Display will show the Protection Code “P1”. (3) If temperature on Indoor Unit’s heat exchanger (TP1) is lower than 3°C, compressor’s operating frequency is at first reduced to the lowest limit foreseen by Manufacturer;...
  • Page 72 Monosplit “Wall” Personal Line DC Inverter - Section 4: Control Logic Functions After 5 minutes of compressor’s operation (this parameter is memorized in EEPROM, and therefore it can be programmed), if temperature (TP1) detected on indoor heat exchanger is not lower than at least 5°C as regards room temperature (Tr), indoor fan motor will automatically operate at “BREEZE”...

  • Page 73: Installation

    Monosplit “Wall” Personal Line DC Inverter - Section 5: Installation 5. 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 74 Monosplit “Wall” Personal Line DC Inverter - Section 5: Installation 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.

  • Page 75: Checks And Preliminary Operations

    Monosplit “Wall” Personal Line DC Inverter - Section 5: Installation 5.1 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 76 Monosplit “Wall” Personal Line DC Inverter - Section 5: Installation 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 77 Monosplit “Wall” Personal Line DC Inverter - Section 5: Installation ■ 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 9.52mm Φ12.7mm Φ15.88mm Φ19.05mm...

  • Page 78: Installation Of Indoor Units Hked 261, 351, 511, 631 X

    Monosplit “Wall” Personal Line DC Inverter - Section 5: Installation 5.2 INSTALLATION OF INDOOR UNITS HKED 261, 351, 511, 631 X ¦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 79 Monosplit “Wall” Personal Line DC Inverter - Section 5: Installation • Strictly observe the instructions provided in this Technical 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 80 Monosplit “Wall” Personal Line DC Inverter - Section 5: Installation SYSTEM’S 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 81 Monosplit “Wall” Personal Line DC Inverter - Section 5: Installation ¦Always observe the operating precautions listed in the following tables. In this way, correct operation and safeguard of people, animals and objects inside the air-conditioned room will be ensured. WARNING ¦Use the correct voltage and frequency for ¦Do not insert the air conditioner’s plug into power supply.
  • Page 82 Monosplit “Wall” Personal Line DC Inverter - Section 5: Installation 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 83 Monosplit “Wall” Personal Line DC Inverter - Section 5: Installation (1) Selection of installation site for Indoor Units HKED (261, 351, 511, 631) X 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 84 Monosplit “Wall” Personal Line DC Inverter - Section 5: Installation Examples of piping flaring: Correct Wrong Lean Crack Damage of flare Partial Too outside (3) Fixing of installation plate The surface to which fixing plate will be installed must be perfectly vertical. The surface to which fixing plate will be installed must be as regular as possible.
  • Page 85 Monosplit “Wall” Personal Line DC Inverter - Section 5: Installation IN-13...
  • Page 86 Monosplit “Wall” Personal Line DC Inverter - Section 5: Installation IN-14...
  • Page 87 Monosplit “Wall” Personal Line DC Inverter - Section 5: Installation (5) Disposal of pipings and cables a) Right-rear and left-rear outlet of pipings: ¦Take out refrigerant pipings and flexible drain hose from Indoor Unit and orient them properly according to installation needs. b) Left-side outlet of pipings: ¦In case of pipings’...
  • Page 88 Monosplit “Wall” Personal Line DC Inverter - Section 5: Installation Indoor Unit Drain duct Wiring between Units Housing for cables and pipings Precut part for Precut part for Refrigerant connection on the right connection pipings on the left Heat insulating material Drain hose Join pipings and cables...
  • Page 89 Monosplit “Wall” Personal Line DC Inverter - Section 5: Installation (9) Position of drain hose ¦As regards the whole formed by wiring and refrigerant pipings, drain hose must be positioned downwards, as it has already previously said. Besides, in particular, the first portion of drain hose - that is the portion which is inside Unit - must be covered by insulating material.
  • Page 90 Monosplit “Wall” Personal Line DC Inverter - Section 5: Installation Example of wiring: “DC Inverter” Models HKED-HCND (261, 351) X Power Supply (on Indoor Unit): 1-Phase, 220~240V, 50 Hz. Calibrations of circuit breaker and power supply switch: - Models 261 X and 351 X → 10A. Min.

  • Page 91: Indoor Unit

    Monosplit “Wall” Personal Line DC Inverter - Section 5: Installation Example of wiring: “DC Inverter” Models HKED-HCND (511, 631) X Power Supply (on Indoor Unit): 1-Phase, 220~240V, 50 Hz. Calibrations of circuit breaker and power supply switch: - Models 511 X and 631 X → 16A. Min.
  • Page 92 Monosplit “Wall” Personal Line DC Inverter - Section 5: Installation (11) Definitive fixing of Indoor Unit 1. Remove the spacer. 2. Suspend Indoor Unit to upper hooks of fixing plate and move Unit left side and right side to check if it is properly fixed.

  • Page 93: Installation Of Outdoor Units Hcnd 261, 351, 511, 631 X

    Monosplit “Wall” Personal Line DC Inverter - Section 5: Installation 5.3 INSTALLATION OF OUTDOOR UNITS HCND 261, 351, 511, 631 X Accessories required The following accessories must be available for Outdoor Unit’s installation: Quantity Appearance Description Drain elbow Rubber pads Clip Selection of place and installation position Place and supporting surface must not amplify vibrations generated by Outdoor Unit.
  • Page 94 2. Check if chosen pipings have such diameters and features (copper thickness) as to be suitable to Units which belong to system and to R410A refrigerant. Fixing plates Mod. HKED 261 X, 351 X Mod. HKED 511 X, 631 X Outlet direction of pipings...
  • Page 95 Monosplit “Wall” Personal Line DC Inverter - Section 5: Installation HKED-HCND 261 X: Limits related to distances and splitting level distances Indoor Unit (HKED 261 X) HCND 261 X Indoor Unit (HKED 261 X) Distances and splitting level distances Item...
  • Page 96 Monosplit “Wall” Personal Line DC Inverter - Section 5: Installation HKED-HCND 351 X: Limits related to distances and splitting level distances Indoor Unit (HKED 351 X) HCND 351 X Indoor Unit (HKED 351 X) Distances and splitting level distances Item Unit Description Measure...
  • Page 97 Monosplit “Wall” Personal Line DC Inverter - Section 5: Installation HKED-HCND 511 X: Limits related to distances and splitting level distances Indoor Unit (HKED 511 X) HCND 511 X Indoor Unit (HKED 511 X) Distances and splitting level distances Description Measure Item Unit...
  • Page 98 Monosplit “Wall” Personal Line DC Inverter - Section 5: Installation HKED-HCND 631 X: Limits related to distances and splitting level distances Indoor Unit (HKED 631 X) HCND 631 X Indoor Unit (HKED 631 X) Distances and splitting level distances Description Measure Item Unit...
  • Page 99 Monosplit “Wall” Personal Line DC Inverter - Section 5: Installation 2. Pipings’ cutting and flaring Cut pipings according to the desired length, by using the special roller pipe cutter. After finishing operation, remove the burr from pipings‘ ends by using the deburring tool. Insert flare nut on piping before carrying out the flaring.
  • Page 100 Monosplit “Wall” Personal Line DC Inverter - Section 5: Installation Electric wiring The electrical work must be carred out by Authorized Technical Personnel, that observes national and local current regulations. 1. Power supply line (on Indoor Unit) must be for air conditioner only. Install a switch that interrupts all contacts ( in opening position, min.
  • Page 101 Monosplit “Wall” Personal Line DC Inverter - Section 5: Installation Final checks Before supplying power to the system: 1. Check the correspondance between wires and terminals on terminal blocks for connection between Indoor Unit and Outdoor Unit. 2. Check heat insulation of refrigerant pipings. 3.

  • Page 102: Vacuum Procedure And Refrigerant Charge

    Monosplit “Wall” Personal Line DC Inverter - Section 5: Installation 5.4 VACUUM PROCEDURE AND REFRIGERANT CHARGE (1) Why vacuum operation is needed Vacuum procedure is necessary to remove the impurities, the remains of not condensable gas, the air and humidity from refrigerant circuit, by a vacuum pump (equipped of one-way valve to avoid oil infiltrations, deriving from the pump, inside refrigerant circuit, in case of accidental stop of pump during vacuum operation).

  • Page 103: Diagnostic & Maintenance

    Monosplit “Wall” Personal Line DC Inverter - Section 6: Diagnostic & Maintenance 6. DIAGNOSTIC & MAINTENANCE The following table shows a series of apparent malfunctions. Carry out the checks described below before contacting Authorized Technical Service. PROBLEM PROBABLE EXPLICATION ¦Air conditioner will restart after 3 minutes have elapsed since it stopped. ¦...

  • Page 104: Autodiagnosis Of Malfunctions: Error Codes On Indoor Unit

    Monosplit “Wall” Personal Line DC Inverter - Section 6: Diagnostic & Maintenance 6.1 AUTODIAGNOSIS OF MALFUNCTIONS: ERROR CODES ON INDOOR UNIT Error Codes (Autodiagnosis’ Functions) 2-digits Display “Running” LED Cause of malfunction. Description What it should be checked. (Status) (Code) (Status) 1.
  • Page 105 Monosplit “Wall” Personal Line DC Inverter - Section 6: Diagnostic & Maintenance Error Codes (Autodiagnosis’ Functions) 2-digits Display “Running” LED Cause of malfunction. Description What it should be checked. (Status) (Code) (Status) 1. Check compressor’s wiring. Correct eventual malfunctions that are observed. 2.
  • Page 106 Monosplit “Wall” Personal Line DC Inverter - Section 6: Diagnostic & Maintenance Error Codes (Autodiagnosis’ Functions) 2-digits Display “Running” LED Cause of malfunction. Description What it should be checked. (Status) (Code) (Status) 1. Measure resistance [*] of Tdc sensor, and check if the detected value corresponds to what it is indicated in R-T Tables for the considered...
  • Page 107 Monosplit “Wall” Personal Line DC Inverter - Section 6: Diagnostic & Maintenance Protection Codes (Protection Functions) 2-digits Display “Running” LED Cause of malfunction. Description What it should be checked. (Code) (Status) (Status) 1. Inspect air inlet filters (Indoor Unit): are they obstructed by dust or dirt? If necessary, clean the filters.
  • Page 108 Monosplit “Wall” Personal Line DC Inverter - Section 6: Diagnostic & Maintenance Protection Codes (Protection Functions) 2-digits Display “Running” LED Cause of malfunction. Description What it should be checked. (Status) (Code) (Status) 1. Check if Indoor Unit’s heat exchanger is Overtemperature obstructed.

  • Page 109: Flowcharts For Malfunctions' Solution

    Monosplit “Wall” Personal Line DC Inverter - Section 6: Diagnostic & Maintenance 6.2 FLOWCHARTS FOR MALFUNCTIONS’ SOLUTION Case 1: Malfunction of temperature sensor “Tr” [Indoor Temperature] Malfunction of Tr sensor. Check connector of Connect connector. Tr on PCB: is it OK? Measure the resistance of Replace Tr sensor.
  • Page 110 Monosplit “Wall” Personal Line DC Inverter - Section 6: Diagnostic & Maintenance Case 3: Only indoor fan motor does not operate Primary check (1) Is it possible to detect the power supply voltage (200~240V) between “L” and “N” on Indoor Unit’s terminal block? (2) If system operates in Cooling mode, does Indoor Unit’s fan motor operate properly? Turn off power...
  • Page 111 Monosplit “Wall” Personal Line DC Inverter - Section 6: Diagnostic & Maintenance Case 4: Compressor does not operate Primary check (1) Is room temperature (Tr) higher than preset temperature (Ts), in Cooling operation? (2) Are crossover cables between Indoor Unit and Outdoor Unit connected properly? Turn on power supply.
  • Page 112 Monosplit “Wall” Personal Line DC Inverter - Section 6: Diagnostic & Maintenance Case 5: Indoor Unit does not receive signals from remote control Primary check (1) No “beep” is heard from Indoor Unit to indicate remote control’s receiving signals. (2) On Indoor Unit, “Running” LED does not light up.
  • Page 113 Monosplit “Wall” Personal Line DC Inverter - Section 6: Diagnostic & Maintenance Case 6: Indoor Unit does not operate A malfunction occurs. Check power supply Is the power applied Is Indoor Unit’s Display cables and interconnection to the Unit? normal? wires.
  • Page 114 Monosplit “Wall” Personal Line DC Inverter - Section 6: Diagnostic & Maintenance Case 7: Indoor Unit and Outdoor Unit do not operate Indoor Unit and Outdoor Unit do not operate. Does the electric switch Is the power supply Make the power Does the electric switch cut off after a few no problem?

  • Page 115: Cleaning & Maintenance Of Air Conditioner

    Monosplit “Wall” Personal Line DC Inverter - Section 6: Diagnostic & Maintenance 6.3 CLEANING & MAINTENANCE OF AIR CONDITIONER Cleaning of air filters (high-efficiency, net type) CAUTION Before beginning cleaning operations: 1. Stop system by pressing ON/OFF button on remote control. 2.
  • Page 116 Monosplit “Wall” Personal Line DC Inverter - Section 6: Diagnostic & Maintenance Cleaning of Indoor Unit and Remote Control CAUTION Before beginning cleaning operations: 1. Stop system by pressing ON/OFF button on remote control. 2. Move main power switch on “OFF” or “0”. 3.
  • Page 117 Monosplit “Wall” Personal Line DC Inverter - Section 6: Diagnostic & Maintenance Ordinary maintenance: at the beginning of season At the beginning of each season or after a long period during which the system has not been used, carry out the following checks: Air inlet and outlet must be free from obstacles Carry out this check both on Indoor Unit and on Outdoor Unit.
  • Page 118 Monosplit “Wall” Personal Line DC Inverter - Section 6: Diagnostic & Maintenance Ordinary maintenance: at the end of season At the end of each season, if you foresee a period during which the air conditioner is not used, please carry out the following devices: Remove remaining humidity from Indoor Unit Operate system for some hours, by selecting “FAN”...
  • Page 119 Monosplit “Wall” Personal Line DC Inverter - Notes Notes Notes-1...
  • Page 120 Monosplit “Wall” Personal Line DC Inverter - Notes Notes Notes-2...
  • Page 121 Monosplit “Wall” Personal Line DC Inverter - Notes Notes Notes-3...
  • Page 122 Monosplit “Wall” Personal Line DC Inverter - Notes Notes Notes-4...
  • Page 123 Monosplit “Wall” Personal Line DC Inverter - Notes Notes Notes-5...
  • Page 124 HOKKAIDO ITALIA 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 wothout notice.

This manual is also suitable for:

Hked 351 xHked 511 xHked 631 xHcnd 261 xHcnd 351 xHcnd 511 x ... Show all

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