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Hokkaido HKED 261 G Instructions Manual

Monosplit “wall” type air conditioners “personal line constant speed” models
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Monosplit "Wall" type Air Conditioners
"Personal Line Constant Speed" Models
Outdoor Units:
Technical Manual (07/2010 - VA1)
Indoor Units:
HKED 261 G
HKED 351 G
HKED 531 G
HCND 261 G
HCND 351 G
HCND 531 G

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Summary of Contents for Hokkaido HKED 261 G

  • Page 1 Technical Manual (07/2010 - VA1) Monosplit “Wall” type Air Conditioners “Personal Line Constant Speed” Models Indoor Units: HKED 261 G HKED 351 G HKED 531 G Outdoor Units: HCND 261 G HCND 351 G HCND 531 G...

  • Page 2: Table Of Contents

    Monosplit “Wall” Personal Line Constant Speed - 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-7 1.4 OUTLINE OF INDOOR & OUTDOOR UNITS ....................IG-15 1.5 IR REMOTE CONTROL ..........................IG-16 1.6 LED PANEL ON INDOOR UNITS........................IG-20 1.7 OPERATING USE CONDITIONS ........................IG-21...

  • Page 3: 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 Constant Speed HKED-HCND 261, 351, 531 G”. This Manual is addressed to Installers and to Authorized Technical Service, that is charged to interventions for malfunction diagnosis and for repairing and/or servicing of system.

  • Page 4: Essential Features Of These Models

    Monosplit “Wall” Personal Line Constant Speed - Section 1: General Information 1.2 ESSENTIAL FEATURES OF THESE MODELS â Energy high efficiency (Class A/A) All capacities (261, 351, 531) of these systems meet requirements of Class “A” Energy Efficiency, both for operation in Cooling mode and for operation in Heating mode. â...
  • Page 5 Monosplit “Wall” Personal Line Constant Speed - Section 1: General Information  However, if “TIMER” operation had been previously selected, it will be cancelled and need to be set again.  “SLEEP” function (see above), has to be expressly selected again as well. ...
  • Page 6 Monosplit “Wall” Personal Line Constant Speed - Section 1: General Information addition to the white decorative board preinstalled in factory. The installation of one of frontal decorative board allows to adapt Indoor Unit’s appearance to different residential environments. This operation must be carried out only by qualified Personnel.
  • Page 7 Monosplit “Wall” Personal Line Constant Speed - 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. Indoor heat exchanger temperature sensor. Ambient temperature control Room temperature is kept on the basis of temperature value set by remote control, by thermostat under microcomputer control.
  • Page 8 Monosplit “Wall” Personal Line Constant Speed - Section 1: General Information 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 9: Appearance Of Units

    Monosplit “Wall” Personal Line Constant Speed - Section 1: General Information 1.3 APPEARANCE OF UNITS Indoor Units “Wall” Personal Line Constant Speed (On-Off): Model HKED 261 G Frontal board, standard “White” (by factory) Model HKED 261 G Frontal board, optional “Black” (HSD-1-BCK) Model HKED 261 G Frontal board, optional “Gold”...
  • Page 10 Monosplit “Wall” Personal Line Constant Speed - Section 1: General Information Indoor Units “Wall” Personal Line Constant Speed (On-Off): Model HKED 261 G Frontal board, optional “Silver” (HSD-1-SLV) Model HKED 261 G Frontal board, optional “Light-Blue” (HSD-1-LBL) IG-8...
  • Page 11 Monosplit “Wall” Personal Line Constant Speed - Section 1: General Information Indoor Units “Wall” Personal Line Constant Speed (On-Off): Model HKED 351 G Frontal board, standard “White” (by factory) Model HKED 351 G Frontal board, optional “Black” (HSD-2-BCK) Model HKED 351 G Frontal board, optional “Gold”...
  • Page 12 Monosplit “Wall” Personal Line Constant Speed - Section 1: General Information Indoor Units “Wall” Personal Line Constant Speed (On-Off): Model HKED 351 G Frontal board, optional “Silver” (HSD-2-SLV) Model HKED 351 G Frontal board, optional “Light-Blue” (HSD-2-LBL) IG-10...
  • Page 13 Monosplit “Wall” Personal Line Constant Speed - Section 1: General Information Indoor Units “Wall” Personal Line Constant Speed (On-Off): Model HKED 531 G Frontal board, standard “White” (by factory) Model HKED 531 G Frontal board, optional “Black” (HSD-3-BCK) Model HKED 531 G Frontal board, optional “Gold”...
  • Page 14 Monosplit “Wall” Personal Line Constant Speed - Section 1: General Information Indoor Units “Wall” Personal Line Constant Speed (On-Off): Model HKED 531 G Frontal board, optional “Silver” (HSD-3-SLV) Model HKED 531 G Frontal board, optional “Light-Blue” (HSD-3-LBL) IG-12...
  • Page 15 Monosplit “Wall” Personal Line Constant Speed - Section 1: General Information Outdoor Units Personal Line Constant Speed (On-Off): Model HCND 261 G Model HCND 351 G IG-13...
  • Page 16 Monosplit “Wall” Personal Line Constant Speed - Section 1: General Information Outdoor Units Personal Line Constant Speed (On-Off): Model HCND 531 G IG-14...

  • Page 17: Outline Of Indoor & Outdoor Units

    Monosplit “Wall” Personal Line Constant Speed - 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. Flap for adjusting air in vertical direction. Outlet air ...

  • Page 18: Ir Remote Control

    Monosplit “Wall” Personal Line Constant Speed - Section 1: General Information 1.5 IR REMOTE CONTROL nIR Remote Control for Models HKED (261, 351, 531) G  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 19 Monosplit “Wall” Personal Line Constant Speed - 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 20 Monosplit “Wall” Personal Line Constant Speed - 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 21 Monosplit “Wall” Personal Line Constant Speed - 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 22: Led Panel On Indoor Units

    Monosplit “Wall” Personal Line Constant Speed - 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 flashes (once / 3seconds) 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 23: Operating Use Conditions

    Monosplit “Wall” Personal Line Constant Speed - 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 24: How To Adjust Air Direction

    Monosplit “Wall” Personal Line Constant Speed - 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 25 Monosplit “Wall” Personal Line Constant Speed - Section 1: General Information to air outlet max. angle, and in Cooling mode, select “High” fan speed. When system is connected, each flap motor may emit a light whirr for about 10 seconds, however ¦...

  • Page 26: Emergency Operation & "Self-Check

    Monosplit “Wall” Personal Line Constant Speed - 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 27 Monosplit “Wall” Personal Line Constant Speed - 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 (“E_”) will be displayed and at the same time “Running”...

  • Page 28: Auto-Restart Functon After A Blackout

    Monosplit “Wall” Personal Line Constant Speed - 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 29: Suggestions For Economic Use Of System

    Monosplit “Wall” Personal Line Constant Speed - 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 30: General Technical Data

    Monosplit “Wall” Personal Line Constant Speed - Section 2: General Technical Data 2. GENERAL TECHNICAL DATA 2.1 SPECIFICATIONS HKED 261 G - HCND 261 G Power Supply Ph-V-Hz 1- 220 ~ 240V- 50Hz Cooling capacity 2.68 0.835 Power input (Cooling)
  • Page 31 Monosplit “Wall” Personal Line Constant Speed - Section 2: General Technical Data HKED 351 G - HCND 351 G Power Supply Ph-V-Hz 1- 220 ~ 240V- 50Hz Cooling capacity 3.50 Power input (Cooling) 1.090 Cooling Input Rated Current EER / Energy Level Class 3.21 / A Annual Consumption (500h) Heating capacity...
  • Page 32 Monosplit “Wall” Personal Line Constant Speed - Section 2: General Technical Data HKED 531 G - HCND 531 G Power Supply Ph-V-Hz 1- 220 ~ 240V- 50Hz Cooling capacity 5.30 Power input (Cooling) 1.650 Cooling Input Rated Current EER / Energy Level Class 3.21 / A Annual Consumption (500h) Heating capacity...

  • Page 33: Dimensions Of Units

    Monosplit “Wall” Personal Line Constant Speed - Section 2: General Technical Data 2.2 DIMENSIONS OF UNITS Indoor Unit HKED 261 G Unit: mm Dimensions Width Height Depth Model HKED 261 G DG-4...
  • Page 34 Monosplit “Wall” Personal Line Constant Speed - Section 2: General Technical Data Indoor Unit HKED 351 G Unit: mm Dimensions Width Height Depth Model HKED 351 G DG-5...
  • Page 35 Monosplit “Wall” Personal Line Constant Speed - Section 2: General Technical Data Indoor Unit HKED 531 G Unit: mm Dimensions Width Height Depth Model HKED 531 G DG-6...
  • Page 36 Monosplit “Wall” Personal Line Constant Speed - Section 2: General Technical Data Outdoor Unit HCND 261 G Unit: mm Dimensions Width Height Depth Model HCND 261 G Outdoor Unit HCND 351 G Unit: mm Dimensioni Width Height Depth Modelli HCND 351 G DG-7...
  • Page 37 Monosplit “Wall” Personal Line Constant Speed - Section 2: General Technical Data Outdoor Unit HCND 531 G Unit: mm Dimensions Width Height Depth Model HCND 531 G DG-8...

  • Page 38: Refrigerant Circuit Diagram

    Monosplit “Wall” Personal Line Constant Speed - Section 2: General Technical Data 2.3 REFRIGERANT CIRCUIT DIAGRAM DG-9...

  • Page 39: Electrical Data

    Monosplit “Wall” Personal Line Constant Speed - Section 3: Electrical Data 3. ELECTRICAL DATA 3.1 WIRING DIAGRAMS Indoor Units HKED 261 G, HKED 351 G Power Supply: 1-Phase, 220~240V, 50Hz Flap Flap motor motor motor Terminal block Yellow/ Green Earthing...
  • Page 40 Monosplit “Wall” Personal Line Constant Speed - Section 3: Electrical Data Indoor Unit HKED 531 G Power Supply: 1-Phase, 220~240V, 50Hz Flap Flap motor motor motor Terminal block Yellow/ Green Earthing Blue Fuse (350V, 3.15A) Earthing Emergency Button Terminal block 1 2(N) Temperature sensors (Tr: room temperature)
  • Page 41 Monosplit “Wall” Personal Line Constant Speed - Section 3: Electrical Data Outdoor Units HCND 261 G, HCND 351 G, HCND 531 G Blue motor Yellow/ Green 4-ways valve coil Thermostat for compressor Black Black Black Blue Blue White White White Blue Condenser Orange...

  • Page 42: R/T Features Of Temperature Sensors

    Monosplit “Wall” Personal Line Constant Speed - Section 3: Electrical Data 3.2 R/T FEATURES OF TEMPERATURE SENSORS DE-4...
  • Page 43 Monosplit “Wall” Personal Line Constant Speed - Section 3: Electrical Data R-T table of thermistors resistance values depending on temperatures Tr (room temperature) | TP1 (Indoor Unit’s heat exchanger temperature) Circuit voltage Circuit voltage Temperature (5V, 4.3K) Temperature (5V, 4.3K) Res.

  • Page 44: Control Functions

    Monosplit “Wall” Personal Line Constant Speed - Section 4: Control Functions 4. CONTROL FUNCTIONS nOperation in “COOL” mode 1. Condition for compressor ON. If temperature which is detected inside the room (Tr sensor) is higher than set temperature Ts increased by 1°C, compressor starts.
  • Page 45 Monosplit “Wall” Personal Line Constant Speed - Section 4: Control Functions If for futher 20 consecutive minutes temperature on Indoor Unit’s heat exchanger, detected by TP1 sensor, is > 25°C, Control PCB on Indoor Unit will command the stop of system as a result of the intervention of protection function for malfunction on Outdoor Unit, and “Running”...
  • Page 46 Monosplit “Wall” Personal Line Constant Speed - Section 4: Control Functions nOperation in “HEAT” mode 1. Condition for compressor ON. When temperature detected inside the room (Tr sensor) is lower than set temperature Ts reduced by 1°C, compressor starts. Therefore, the condition is the following: Tr < (Ts - 1)°C. 2.
  • Page 47 Monosplit “Wall” Personal Line Constant Speed - Section 4: Control Functions exchanger is ≤ 56°C. When this conditions occurs, Outdoor Unit’s fan may be started again. A further intervention level of overload protection in Heating mode foresees that if temperature detected by TP1 sensor is at least 63°C, forced stop of compressor and fan on Outdoor Unit is commanded, and after 2 minutes 4-way valve moves to OFF position.
  • Page 48 Monosplit “Wall” Personal Line Constant Speed - Section 4: Control Functions 5. Protection for insufficient performance in Heating mode. If after 5 minutes of compressor’s operation, temperature on Indoor Unit’s heat exchanger, detected by TP1 sensor, is < 30°C for 20 consecutive minutesm, “Running” LED on Indoor Unit will flash for 4 times/6seconds or Error Code “E4”...
  • Page 49 Monosplit “Wall” Personal Line Constant Speed - Section 4: Control Functions If, on the basis of above considered parameters, the presence of frost on Outdoor Unit’s heat exchanger is supposed, automatic defrosting is started, with reversal of refrigerant cycle as regards operation in Heating mode.
  • Page 50 Monosplit “Wall” Personal Line Constant Speed - Section 4: Control Functions nOperation in “DRY” mode 1. In this mode, the aim is above all to reduce humidity rate inside the room. Within this operating logic, the reduction in room temperature value represents an aim of minor importance, which in any case is reached within the limits of settiongs that cannot be modified by the User (see below), but the air volume treated by Indoor Unit results lower as regards operation in Cooling mode, for the reasons that are indicated at the following items.
  • Page 51 Monosplit “Wall” Personal Line Constant Speed - Section 4: Control Functions nOperation in “FAN” mode 1. In this operation mode, compressor, Outdoor Unit’s fan and 4-way valve are OFF. 2. Rotation speed of Indoor Unit’s fan can be freely selected, by using IR remote control and selecting among the following available options: “High”, “Medium”, “Low”.
  • Page 52 Monosplit “Wall” Personal Line Constant Speed - Section 4: Control Functions nOperation in “AUTO” mode 1. This operation mode can be selected by the User when starting the system by IR remote control, or it is selected by control electronics if Emergency Button on Indoor Unit is pressed. 2.
  • Page 53 Monosplit “Wall” Personal Line Constant Speed - Section 4: Control Functions n“Timer On” / “Timer Off” “Timer On” 1. When the system is powered but not operating (standby), it is possible to set the automatic start of the appliance, by using IR remote control. 2.
  • Page 54 Monosplit “Wall” Personal Line Constant Speed - Section 4: Control Functions At each subsequent press on “TIMER” button, time interval set for automatic stop will be increased by 1 hour, up to max. 24 hours. On Indoor Unit’s frontal panel, “Timer” LED indicator (of orange colour) and on 2-digits LED Display on Indoor Unit, set time interval (in hours) for automatic stop of system will be displayed.
  • Page 55 Monosplit “Wall” Personal Line Constant Speed - Section 4: Control Functions n“SLEEP” operation 1. This function is available in the following operation modes: “COOL” and “HEAT”. 2. “SLEEP” function foresees also the rotation of Indoor Unit’s fan at fixed Low speed, therefore it allows to reduce operating sound level of Indoor Unit.
  • Page 56 Monosplit “Wall” Personal Line Constant Speed - Section 4: Control Functions n“Auto-Restart” function after a blackout 1. As we have already seen previously, (see “Section 1: General Information” of this Technical Manual), normally the system is able to restart automatically with previously settings before blackout occurred. Therefore, there is no need to use IR remote control.

  • Page 57: Installation

    Monosplit “Wall” Personal Line Constant Speed - 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 58 Monosplit “Wall” Personal Line Constant Speed - 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 59: Checks And Preliminary Operations

    Monosplit “Wall” Personal Line Constant Speed - 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 60 Monosplit “Wall” Personal Line Constant Speed - 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 61 Monosplit “Wall” Personal Line Constant Speed - 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 62: Installation Of Indoor Units Hked 261, 351, 531 G

    Monosplit “Wall” Personal Line Constant Speed - Section 5: Installation 5.2 INSTALLATION OF INDOOR UNITS HKED 261, 351, 531 G ¦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 63 Monosplit “Wall” Personal Line Constant Speed - 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 64 Monosplit “Wall” Personal Line Constant Speed - 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 65 Monosplit “Wall” Personal Line Constant Speed - 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 66 Monosplit “Wall” Personal Line Constant Speed - 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 67 Monosplit “Wall” Personal Line Constant Speed - Section 5: Installation (1) Selection of installation site for Indoor Units HKED (261, 351, 531) G 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 68 Monosplit “Wall” Personal Line Constant Speed - 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 69 Monosplit “Wall” Personal Line Constant Speed - Section 5: Installation IN-13...
  • Page 70 Monosplit “Wall” Personal Line Constant Speed - Section 5: Installation IN-14...
  • Page 71 Monosplit “Wall” Personal Line Constant Speed - Section 5: Installation IN-15...
  • Page 72 Monosplit “Wall” Personal Line Constant Speed - 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 73 Monosplit “Wall” Personal Line Constant Speed - 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 74 Monosplit “Wall” Personal Line Constant Speed - 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 75 Monosplit “Wall” Personal Line Constant Speed - Section 5: Installation Example of wiring: “Constant Speed” Models HKED-HCND 261, 351, 531G Power supply (on Indoor Unit): 1-Phase, 220~240V, 50 Hz. Calibration of circuit breaker and power supply switch: - Model 261 G → 10A - Models 351 G and 531 G →...
  • Page 76 Monosplit “Wall” Personal Line Constant Speed - 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 77: Installation Of Outdoor Units Hcnd 261, 351, 531 G

    Monosplit “Wall” Personal Line Constant Speed - Section 5: Installation 5.3 INSTALLATION OF OUTDOOR UNITS HCND 261, 351, 531 G 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 78 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 G Mod. HKED 351 G Mod. HKED 531 G...
  • Page 79 Monosplit “Wall” Personal Line Constant Speed - Section 5: Installation HKED-HCND 261 G: Limits related to distances and splitting level distances Indoor Unit (HKED 261 G) HCND 261 G Indoor Unit (HKED 261 G) Distances and splitting level distances Item...
  • Page 80 Monosplit “Wall” Personal Line Constant Speed - Section 5: Installation HKED-HCND 351 G: Limits related to distances and splitting level distances Indoor Unit (HKED 351 G) HCND 351 G Indoor Unit (HKED 351 G) Distances and splitting level distances Item Unit Description Measure...
  • Page 81 Monosplit “Wall” Personal Line Constant Speed - Section 5: Installation HKED-HCND 531 G: Limits related to distances and splitting level distances Indoor Unit (HKED 531 G) HCND 531 G Indoor Unit (HKED 531 G) Distances and splitting level distances Item Unit Description Measure...
  • Page 82 Monosplit “Wall” Personal Line Constant Speed - 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 83 Monosplit “Wall” Personal Line Constant Speed - 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 84 Monosplit “Wall” Personal Line Constant Speed - 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 85: Vacuum Procedure And Refrigerant Charge

    Monosplit “Wall” Personal Line Constant Speed - 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 86: Diagnostic & Maintenance

    Monosplit “Wall” Personal Line Constant Speed - 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 87: Autodiagnosis Of Malfunctions: Error Codes On Indoor Unit

    Monosplit “Wall” Personal Line Constant Speed - Section 6: Diagnostic & Maintenance 6.1 AUTODIAGNOSIS OF MALFUNCTIONS: ERROR CODES ON INDOOR UNIT 2-digits LED Display “Running” lamp Cause of malfunction. Description What it should be checked. Code State Codification State There is no malfunction. At the end of Automatic System Flashing...
  • Page 88 Monosplit “Wall” Personal Line Constant Speed - Section 6: Diagnostic & Maintenance 2-digits LED Display “Running” lamp Cause of malfunction. Description What it should be checked. Code State Codification State (following of previous page) 4. Check if condenser (heat exchanger on Outdoor Unit) is not dirty outside, etc.

  • Page 89: Flowcharts For Malfunctions' Solution

    Monosplit “Wall” Personal Line Constant Speed - 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 90 Monosplit “Wall” Personal Line Constant Speed - 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 91 Monosplit “Wall” Personal Line Constant Speed - 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 92 Monosplit “Wall” Personal Line Constant Speed - 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 93 Monosplit “Wall” Personal Line Constant Speed - 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 94 Monosplit “Wall” Personal Line Constant Speed - 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 95 Monosplit “Wall” Personal Line Constant Speed - Section 6: Diagnostic & Maintenance Tables R-T of sensors’ resistance values according to temperature Tr (room temperature) | TP1 (heat exchanger’s temperature on Indoor Unit) Voltage Voltage Resistance Resistance Resistance Resistance Standard Temperature (5V, 4.3K) Temperature (5V, 4.3K)

  • Page 96: Cleaning & Maintenance Of Air Conditioner

    Monosplit “Wall” Personal Line Constant Speed - 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 97 Monosplit “Wall” Personal Line Constant Speed - 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 98 Monosplit “Wall” Personal Line Constant Speed - 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 99 Monosplit “Wall” Personal Line Constant Speed - 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 100 Monosplit “Wall” Personal Line Constant Speed - Notes Notes Notes-1...
  • Page 101 Monosplit “Wall” Personal Line Constant Speed - Notes Notes Notes-2...
  • Page 102 Monosplit “Wall” Personal Line Constant Speed - Notes Notes Notes-3...
  • Page 103 Monosplit “Wall” Personal Line Constant Speed - Notes Notes Notes-4...
  • Page 104 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.

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